Backend requirements vary considerably between new products, established platforms, and systems burdened by technical debt. This list compares providers that cover server-side development, APIs, databases, cloud infrastructure, integrations, modernization, and backend engineering support.

1. Gilzor

Gilzor develops backend systems for web platforms, mobile applications, and custom software products. Its work includes server-side business logic, authentication, database connections, API development, role-based access control, and integrations with external services. The company can build a backend from the ground up or work on an existing system that needs restructuring, troubleshooting, or new functionality.

Published projects show experience with management platforms, data synchronization, user and project APIs, and permission systems. Gilzor also provides architecture planning and ongoing development, making it relevant to teams that want the same technical partner involved beyond the initial release.

Key Facts

  • Best for: Custom web and mobile product backends
  • Core services: Backend development, API development, database integration, system architecture, troubleshooting
  • Specialization: Server-side systems connected to web applications, mobile apps, and business platforms
  • Location: Warsaw, Poland and Limassol, Cyprus
  • Notable strength: Support for both new backend systems and existing applications

Contact Information

2. OSKI Solutions

OSKI Solutions has a dedicated backend development practice covering server-side logic, databases, APIs, microservices, and enterprise applications. Its technology range includes C#, .NET Core, Node.js, Python, PHP, and Ruby, with PostgreSQL, MongoDB, and SQL Server among the database options listed on its website.

The company works on custom software, SaaS platforms, ERP and CRM systems, data integration tools, and business process automation. It also provides cloud and DevOps services, system integration, security support, and continued maintenance. This range is useful when backend development must be coordinated with infrastructure, deployment, and long-term system operation.

Key Facts

  • Best for: Data-heavy business applications and enterprise platforms
  • Core services: Backend development, custom APIs, database management, system integration, maintenance
  • Technologies: C#, .NET Core, Node.js, Python, PHP, Ruby
  • Project types: SaaS platforms, ERP systems, CRM software, ETL solutions
  • Notable strength: Dedicated backend service supported by cloud, DevOps, and integration capabilities

Contact Information

  • Website: oski.site
  • Phone: +48571282759
  • Email: contact@oski.site
  • Address: Kaupmehe tn 7-120, Tallinn, 10114, Estonia

  • LinkedIn: www.linkedin.com/company/oski-solutions

3. NeoWork

NeoWork approaches backend development through offshore and nearshore team building rather than a conventional fixed-scope agency model. It recruits software developers and other IT professionals from the Philippines and Colombia, then integrates them into a client’s existing workflows. Companies can use the service to expand an engineering department without managing the entire international recruitment process themselves.

The company’s software development offering covers architecture, coding, testing, and work on web and mobile applications. NeoWork is therefore a more suitable option for businesses that already have technical leadership and clearly defined backend requirements than for teams seeking a fully packaged backend project delivered independently.

Key Facts

  • Best for: Companies extending an existing software engineering team
  • Core services: Software developer staffing, IT outsourcing, team integration, technical talent sourcing
  • Delivery model: Dedicated offshore and nearshore professionals
  • Talent locations: Philippines and Colombia
  • Notable strength: Managed recruitment and support for embedded technical staff

Contact Information

  • Website: www.neowork.com
  • Facebook: www.facebook.com/neoworkteam
  • LinkedIn: www.linkedin.com/company/neoworkteam
  • Instagram: www.instagram.com/neoworkteam

4. A-listware

A-listware provides backend engineers through dedicated teams, staff augmentation, and managed software development. Its broader development offering covers projects from initial planning and architecture through coding, testing, deployment, and maintenance. The company can also take responsibility for a specific backend task instead of handling the complete product lifecycle.

Its published technology capabilities include .NET, Java, TypeScript, C++, Python, Go, PHP, Node.js, and Ruby. This gives clients several options for new systems, modernization work, cloud applications, and enterprise software. A-listware is especially relevant when a company needs backend specialists who can join an established team or form a separate managed development unit.

Key Facts

  • Best for: Dedicated backend developers and managed engineering teams
  • Core services: Backend engineering, custom software development, cloud applications, legacy modernization
  • Technologies: .NET, Java, Python, Go, PHP, Node.js, Ruby, TypeScript
  • Delivery models: Dedicated teams, development outsourcing, staff augmentation
  • Notable strength: Flexible engagement for individual specialists or complete teams

Contact Information

  • Website: a-listware.com
  • Phone: +1 (888) 337 93 73
  • Email: info@a-listware.com
  • Address: North Bergen, NJ 07047, USA
  • LinkedIn: www.linkedin.com/company/a-listware
  • Facebook: www.facebook.com/alistware

5. Mobian Studio

Mobian Studio handles backend development as part of end-to-end digital product delivery. Its scope includes mobile applications, enterprise backends, APIs, cloud infrastructure, quality assurance, and connections to legacy systems. Clients can outsource an entire build or add selected engineers to their own team.

The company focuses on products in healthcare, fintech, logistics, telecommunications, education, and enterprise IT. Its capabilities include regulated data integrations, payment flows, automation systems, and architecture designed to accommodate growing user volumes. Post-launch services cover bug resolution, performance monitoring, maintenance, and planning for further scaling.

Key Facts

  • Best for: Mobile products that need backend and cloud engineering
  • Core services: Backend development, API development, cloud infrastructure, legacy integration, QA
  • Industries: Healthcare, fintech, logistics, telecommunications, education
  • Delivery models: Project outsourcing and engineering outstaffing
  • Notable strength: Backend work coordinated with mobile development and post-launch scaling

Contact Information

  • Website: mobian.studio
  • Email: info@mobian.studio
  • Address: Harju maakond, Tallinn, Kesklinna Linnaosa, Masina tn 22, 10113
  • LinkedIn: www.linkedin.com/company/mobian-studio

6. 21century.tech

21century.tech is a compact, remote-first software studio that uses senior engineers alongside AI-assisted development tools. Its public offering covers production software, full-stack features, legacy refactoring, third-party integrations, architecture, testing, documentation, and deployment. Backend engineering is therefore delivered within a broader product or feature engagement rather than presented as an isolated service line.

The studio may appeal to startups and small product teams with a defined specification, prototype, or existing codebase. Every generated contribution is described as human-reviewed, while senior engineers retain responsibility for architecture, business logic, security decisions, and final code quality.

Key Facts

  • Best for: Fast product builds, integrations, and focused refactoring work
  • Core services: Production software development, full-stack features, legacy refactoring, integrations
  • Delivery approach: Senior-led, AI-assisted engineering
  • Location: Miami and remote-first
  • Notable strength: Short development cycles for clearly scoped software work

Contact Information

  • Website: 21century.tech
  • Email: kirill@oski.site

7. SoftPro

SoftPro develops custom software with a strong emphasis on Microsoft technologies. Its stated capabilities span frontend, backend, and CMS development, supported by Azure, ASP.NET, and .NET Core. The company works on web applications, business process automation, cloud solutions, and software tailored to internal operational requirements.

The Microsoft-centered stack makes SoftPro a practical candidate for organizations already using Azure or .NET-based systems. Its portfolio also includes data integration and SaaS projects, while its cloud services cover application development and migration. Compared with larger multi-stack providers, the company presents a more concentrated technical direction.

Key Facts

  • Best for: Microsoft-based backend and cloud projects
  • Core services: Custom software, backend development, web applications, cloud development
  • Technologies: Azure, ASP.NET, .NET Core, Microsoft stack
  • Location: Warsaw, Poland
  • Notable strength: Backend work aligned with Microsoft and Azure environments

Contact Information

  • Website: soft-pro.pl
  • Address: Poland, Warsaw, Mazowieckie Voivodeship, 13 Erasmus Ciołka St. 401

8. Lengreo

Lengreo provides backend implementation within its website development service. Its process starts with business analysis and prototyping, followed by frontend work and then backend development. The company primarily uses JavaScript and WordPress to create business websites, ecommerce sites, portfolios, landing pages, and custom-coded web experiences.

This is a narrower backend offering than those provided by enterprise software firms. Lengreo makes the most sense for businesses whose server-side requirements are tied to a marketing website, content platform, lead generation system, or ecommerce presence. Domain setup, migration assistance, quality assurance, and limited post-launch adjustments are also available.

Key Facts

  • Best for: Website backend implementation connected to marketing and ecommerce
  • Core services: Website development, backend implementation, custom web development, maintenance
  • Technologies: JavaScript and WordPress
  • Project types: Business websites, ecommerce sites, portfolios, landing pages
  • Notable strength: Development coordinated with design and digital marketing work

Contact Information

  • Website: lengreo.com
  • E-mail: hi@lengreo.com 
  • Twitter: x.com/Lengreo 
  • LinkedIn: www.linkedin.com/company/lengreo
  • Instagram: www.instagram.com/lengreo.agency
  • Address: Vrijstraat 9 C/D, 5611 AT Eindhoven, Netherlands
  • Phone: +31 686 147 566

9. net-devs

net-devs builds enterprise software using .NET, JVM technologies, Node.js, Python, and Go. Its engineering practice covers backend systems, cloud-native architecture, legacy modernization, platform development, artificial intelligence integration, and dedicated technical teams. Azure, AWS, Google Cloud, Terraform, and Kubernetes are part of its published cloud capabilities.

The company emphasizes senior ownership throughout an engagement, including initial scoping, architecture, delivery, and review. Its industry work includes fintech, healthcare, logistics, and B2B SaaS, where backend reliability and integration requirements tend to be substantial. This profile makes net-devs better suited to long-lived business systems than simple websites or short promotional builds.

Key Facts

  • Best for: Enterprise backend systems and legacy modernization
  • Core services: Enterprise development, cloud architecture, modernization, platform engineering
  • Technologies: .NET, JVM, Node.js, Python, Go
  • Industries: Fintech, healthcare, logistics, B2B SaaS
  • Location: Warsaw, Poland
  • Notable strength: Senior-led development across multiple backend and cloud stacks

Contact Information

  • Website: net-devs.com
  • Phone: +48 571 282 759
  • Email: contact@net-devs.com
  • Address: Obrzeżna 1D, 02-691 Warszawa
  • LinkedIn: www.linkedin.com/company/net-devs

10. Itexus

Itexus develops backend systems for regulated and integration-heavy financial products. Its engineering scope includes API servers, business logic, microservices, data pipelines, cloud infrastructure, and connections to payment providers, banks, brokers, exchanges, and KYC services. The company works with Java, .NET, TypeScript, and Python, supported by PostgreSQL, MongoDB, Redis, Kafka, and RabbitMQ.

Its portfolio covers digital banking, payments, lending, wealth management, trading, insurance, and digital assets. Itexus also handles legacy modernization, performance improvements, security controls, DevOps, and post-launch maintenance. This makes it particularly relevant when the backend must support sensitive data, high transaction volumes, audit trails, and complex third-party integrations.

Key Facts

  • Best for: Backend development for fintech and regulated financial products
  • Core services: Backend engineering, API development, system integration, cloud infrastructure, legacy modernization
  • Technologies: Java, .NET, TypeScript, Python, PostgreSQL, MongoDB, Redis, Kafka
  • Industries: Banking, payments, lending, investment management, trading, insurance
  • Location: Headquartered in the United States with development offices in Europe
  • Notable strength: Backend architecture for high-load, security-sensitive financial systems

Contact Information

  • Website: itexus.com 
  • Email: info@itexus.com 
  • Address: 8, The Green, STE road, Dover, DE 19901, United States
  • LinkedIn: www.linkedin.com/company/itexus 
  • Facebook: www.facebook.com/itexus 
  • Twitter: x.com/ItexusSoft 
  • Instagram: www.instagram.com/itexus.soft

Conclusion

Backend projects rarely fail because a team cannot write code. Problems usually appear when architecture decisions are rushed, integrations become tangled, or nobody plans for what happens after launch. The providers in this list cover different versions of that challenge, from building complete server-side systems to supplying experienced engineers for an existing team. Gilzor offers a balanced option for custom web and mobile backends, while OSKI Solutions, A-listware, Mobian, and net-devs bring broader engineering and cloud capabilities.

The right choice depends on the work already sitting in front of you. A new product may need APIs, databases, deployment, and architecture handled together, while an established platform might only require a careful refactor or extra backend talent. Before signing a contract, ask who will make the technical decisions, how the system will be tested under real load, and who will maintain it six months later. Those answers tend to reveal far more than a polished services page.10 Best Backend Development Companies (2026)

Backend requirements vary considerably between new products, established platforms, and systems burdened by technical debt. This list compares providers that cover server-side development, APIs, databases, cloud infrastructure, integrations, modernization, and backend engineering support.

1. Gilzor

Gilzor develops backend systems for web platforms, mobile applications, and custom software products. Its work includes server-side business logic, authentication, database connections, API development, role-based access control, and integrations with external services. The company can build a backend from the ground up or work on an existing system that needs restructuring, troubleshooting, or new functionality.

Published projects show experience with management platforms, data synchronization, user and project APIs, and permission systems. Gilzor also provides architecture planning and ongoing development, making it relevant to teams that want the same technical partner involved beyond the initial release.

Key Facts

  • Best for: Custom web and mobile product backends
  • Core services: Backend development, API development, database integration, system architecture, troubleshooting
  • Specialization: Server-side systems connected to web applications, mobile apps, and business platforms
  • Location: Warsaw, Poland and Limassol, Cyprus
  • Notable strength: Support for both new backend systems and existing applications

Contact Information

2. OSKI Solutions

OSKI Solutions has a dedicated backend development practice covering server-side logic, databases, APIs, microservices, and enterprise applications. Its technology range includes C#, .NET Core, Node.js, Python, PHP, and Ruby, with PostgreSQL, MongoDB, and SQL Server among the database options listed on its website.

The company works on custom software, SaaS platforms, ERP and CRM systems, data integration tools, and business process automation. It also provides cloud and DevOps services, system integration, security support, and continued maintenance. This range is useful when backend development must be coordinated with infrastructure, deployment, and long-term system operation.

Key Facts

  • Best for: Data-heavy business applications and enterprise platforms
  • Core services: Backend development, custom APIs, database management, system integration, maintenance
  • Technologies: C#, .NET Core, Node.js, Python, PHP, Ruby
  • Project types: SaaS platforms, ERP systems, CRM software, ETL solutions
  • Notable strength: Dedicated backend service supported by cloud, DevOps, and integration capabilities

Contact Information

  • Website: oski.site
  • Phone: +48571282759
  • Email: contact@oski.site
  • Address: Kaupmehe tn 7-120, Tallinn, 10114, Estonia

  • LinkedIn: www.linkedin.com/company/oski-solutions

3. NeoWork

NeoWork approaches backend development through offshore and nearshore team building rather than a conventional fixed-scope agency model. It recruits software developers and other IT professionals from the Philippines and Colombia, then integrates them into a client’s existing workflows. Companies can use the service to expand an engineering department without managing the entire international recruitment process themselves.

The company’s software development offering covers architecture, coding, testing, and work on web and mobile applications. NeoWork is therefore a more suitable option for businesses that already have technical leadership and clearly defined backend requirements than for teams seeking a fully packaged backend project delivered independently.

Key Facts

  • Best for: Companies extending an existing software engineering team
  • Core services: Software developer staffing, IT outsourcing, team integration, technical talent sourcing
  • Delivery model: Dedicated offshore and nearshore professionals
  • Talent locations: Philippines and Colombia
  • Notable strength: Managed recruitment and support for embedded technical staff

Contact Information

  • Website: www.neowork.com
  • Facebook: www.facebook.com/neoworkteam
  • LinkedIn: www.linkedin.com/company/neoworkteam
  • Instagram: www.instagram.com/neoworkteam

4. A-listware

A-listware provides backend engineers through dedicated teams, staff augmentation, and managed software development. Its broader development offering covers projects from initial planning and architecture through coding, testing, deployment, and maintenance. The company can also take responsibility for a specific backend task instead of handling the complete product lifecycle.

Its published technology capabilities include .NET, Java, TypeScript, C++, Python, Go, PHP, Node.js, and Ruby. This gives clients several options for new systems, modernization work, cloud applications, and enterprise software. A-listware is especially relevant when a company needs backend specialists who can join an established team or form a separate managed development unit.

Key Facts

  • Best for: Dedicated backend developers and managed engineering teams
  • Core services: Backend engineering, custom software development, cloud applications, legacy modernization
  • Technologies: .NET, Java, Python, Go, PHP, Node.js, Ruby, TypeScript
  • Delivery models: Dedicated teams, development outsourcing, staff augmentation
  • Notable strength: Flexible engagement for individual specialists or complete teams

Contact Information

  • Website: a-listware.com
  • Phone: +1 (888) 337 93 73
  • Email: info@a-listware.com
  • Address: North Bergen, NJ 07047, USA
  • LinkedIn: www.linkedin.com/company/a-listware
  • Facebook: www.facebook.com/alistware

5. Mobian Studio

Mobian Studio handles backend development as part of end-to-end digital product delivery. Its scope includes mobile applications, enterprise backends, APIs, cloud infrastructure, quality assurance, and connections to legacy systems. Clients can outsource an entire build or add selected engineers to their own team.

The company focuses on products in healthcare, fintech, logistics, telecommunications, education, and enterprise IT. Its capabilities include regulated data integrations, payment flows, automation systems, and architecture designed to accommodate growing user volumes. Post-launch services cover bug resolution, performance monitoring, maintenance, and planning for further scaling.

Key Facts

  • Best for: Mobile products that need backend and cloud engineering
  • Core services: Backend development, API development, cloud infrastructure, legacy integration, QA
  • Industries: Healthcare, fintech, logistics, telecommunications, education
  • Delivery models: Project outsourcing and engineering outstaffing
  • Notable strength: Backend work coordinated with mobile development and post-launch scaling

Contact Information

  • Website: mobian.studio
  • Email: info@mobian.studio
  • Address: Harju maakond, Tallinn, Kesklinna Linnaosa, Masina tn 22, 10113
  • LinkedIn: www.linkedin.com/company/mobian-studio

6. 21century.tech

21century.tech is a compact, remote-first software studio that uses senior engineers alongside AI-assisted development tools. Its public offering covers production software, full-stack features, legacy refactoring, third-party integrations, architecture, testing, documentation, and deployment. Backend engineering is therefore delivered within a broader product or feature engagement rather than presented as an isolated service line.

The studio may appeal to startups and small product teams with a defined specification, prototype, or existing codebase. Every generated contribution is described as human-reviewed, while senior engineers retain responsibility for architecture, business logic, security decisions, and final code quality.

Key Facts

  • Best for: Fast product builds, integrations, and focused refactoring work
  • Core services: Production software development, full-stack features, legacy refactoring, integrations
  • Delivery approach: Senior-led, AI-assisted engineering
  • Location: Miami and remote-first
  • Notable strength: Short development cycles for clearly scoped software work

Contact Information

  • Website: 21century.tech
  • Email: kirill@oski.site

7. SoftPro

SoftPro develops custom software with a strong emphasis on Microsoft technologies. Its stated capabilities span frontend, backend, and CMS development, supported by Azure, ASP.NET, and .NET Core. The company works on web applications, business process automation, cloud solutions, and software tailored to internal operational requirements.

The Microsoft-centered stack makes SoftPro a practical candidate for organizations already using Azure or .NET-based systems. Its portfolio also includes data integration and SaaS projects, while its cloud services cover application development and migration. Compared with larger multi-stack providers, the company presents a more concentrated technical direction.

Key Facts

  • Best for: Microsoft-based backend and cloud projects
  • Core services: Custom software, backend development, web applications, cloud development
  • Technologies: Azure, ASP.NET, .NET Core, Microsoft stack
  • Location: Warsaw, Poland
  • Notable strength: Backend work aligned with Microsoft and Azure environments

Contact Information

  • Website: soft-pro.pl
  • Address: Poland, Warsaw, Mazowieckie Voivodeship, 13 Erasmus Ciołka St. 401

8. Lengreo

Lengreo provides backend implementation within its website development service. Its process starts with business analysis and prototyping, followed by frontend work and then backend development. The company primarily uses JavaScript and WordPress to create business websites, ecommerce sites, portfolios, landing pages, and custom-coded web experiences.

This is a narrower backend offering than those provided by enterprise software firms. Lengreo makes the most sense for businesses whose server-side requirements are tied to a marketing website, content platform, lead generation system, or ecommerce presence. Domain setup, migration assistance, quality assurance, and limited post-launch adjustments are also available.

Key Facts

  • Best for: Website backend implementation connected to marketing and ecommerce
  • Core services: Website development, backend implementation, custom web development, maintenance
  • Technologies: JavaScript and WordPress
  • Project types: Business websites, ecommerce sites, portfolios, landing pages
  • Notable strength: Development coordinated with design and digital marketing work

Contact Information

  • Website: lengreo.com
  • E-mail: hi@lengreo.com 
  • Twitter: x.com/Lengreo 
  • LinkedIn: www.linkedin.com/company/lengreo
  • Instagram: www.instagram.com/lengreo.agency
  • Address: Vrijstraat 9 C/D, 5611 AT Eindhoven, Netherlands
  • Phone: +31 686 147 566

9. net-devs

net-devs builds enterprise software using .NET, JVM technologies, Node.js, Python, and Go. Its engineering practice covers backend systems, cloud-native architecture, legacy modernization, platform development, artificial intelligence integration, and dedicated technical teams. Azure, AWS, Google Cloud, Terraform, and Kubernetes are part of its published cloud capabilities.

The company emphasizes senior ownership throughout an engagement, including initial scoping, architecture, delivery, and review. Its industry work includes fintech, healthcare, logistics, and B2B SaaS, where backend reliability and integration requirements tend to be substantial. This profile makes net-devs better suited to long-lived business systems than simple websites or short promotional builds.

Key Facts

  • Best for: Enterprise backend systems and legacy modernization
  • Core services: Enterprise development, cloud architecture, modernization, platform engineering
  • Technologies: .NET, JVM, Node.js, Python, Go
  • Industries: Fintech, healthcare, logistics, B2B SaaS
  • Location: Warsaw, Poland
  • Notable strength: Senior-led development across multiple backend and cloud stacks

Contact Information

  • Website: net-devs.com
  • Phone: +48 571 282 759
  • Email: contact@net-devs.com
  • Address: Obrzeżna 1D, 02-691 Warszawa
  • LinkedIn: www.linkedin.com/company/net-devs

10. Itexus

Itexus develops backend systems for regulated and integration-heavy financial products. Its engineering scope includes API servers, business logic, microservices, data pipelines, cloud infrastructure, and connections to payment providers, banks, brokers, exchanges, and KYC services. The company works with Java, .NET, TypeScript, and Python, supported by PostgreSQL, MongoDB, Redis, Kafka, and RabbitMQ.

Its portfolio covers digital banking, payments, lending, wealth management, trading, insurance, and digital assets. Itexus also handles legacy modernization, performance improvements, security controls, DevOps, and post-launch maintenance. This makes it particularly relevant when the backend must support sensitive data, high transaction volumes, audit trails, and complex third-party integrations.

Key Facts

  • Best for: Backend development for fintech and regulated financial products
  • Core services: Backend engineering, API development, system integration, cloud infrastructure, legacy modernization
  • Technologies: Java, .NET, TypeScript, Python, PostgreSQL, MongoDB, Redis, Kafka
  • Industries: Banking, payments, lending, investment management, trading, insurance
  • Location: Headquartered in the United States with development offices in Europe
  • Notable strength: Backend architecture for high-load, security-sensitive financial systems

Contact Information

  • Website: itexus.com 
  • Email: info@itexus.com 
  • Address: 8, The Green, STE road, Dover, DE 19901, United States
  • LinkedIn: www.linkedin.com/company/itexus 
  • Facebook: www.facebook.com/itexus 
  • Twitter: x.com/ItexusSoft 
  • Instagram: www.instagram.com/itexus.soft

Conclusion

Backend projects rarely fail because a team cannot write code. Problems usually appear when architecture decisions are rushed, integrations become tangled, or nobody plans for what happens after launch. The providers in this list cover different versions of that challenge, from building complete server-side systems to supplying experienced engineers for an existing team. Gilzor offers a balanced option for custom web and mobile backends, while OSKI Solutions, A-listware, Mobian, and net-devs bring broader engineering and cloud capabilities.

The right choice depends on the work already sitting in front of you. A new product may need APIs, databases, deployment, and architecture handled together, while an established platform might only require a careful refactor or extra backend talent. Before signing a contract, ask who will make the technical decisions, how the system will be tested under real load, and who will maintain it six months later. Those answers tend to reveal far more than a polished services page.

Backend requirements vary considerably between new products, established platforms, and systems burdened by technical debt. This list compares providers that cover server-side development, APIs, databases, cloud infrastructure, integrations, modernization, and backend engineering support.

1. Gilzor

Gilzor develops backend systems for web platforms, mobile applications, and custom software products. Its work includes server-side business logic, authentication, database connections, API development, role-based access control, and integrations with external services. The company can build a backend from the ground up or work on an existing system that needs restructuring, troubleshooting, or new functionality.

Published projects show experience with management platforms, data synchronization, user and project APIs, and permission systems. Gilzor also provides architecture planning and ongoing development, making it relevant to teams that want the same technical partner involved beyond the initial release.

Key Facts

  • Best for: Custom web and mobile product backends
  • Core services: Backend development, API development, database integration, system architecture, troubleshooting
  • Specialization: Server-side systems connected to web applications, mobile apps, and business platforms
  • Location: Warsaw, Poland and Limassol, Cyprus
  • Notable strength: Support for both new backend systems and existing applications

Contact Information

2. OSKI Solutions

OSKI Solutions has a dedicated backend development practice covering server-side logic, databases, APIs, microservices, and enterprise applications. Its technology range includes C#, .NET Core, Node.js, Python, PHP, and Ruby, with PostgreSQL, MongoDB, and SQL Server among the database options listed on its website.

The company works on custom software, SaaS platforms, ERP and CRM systems, data integration tools, and business process automation. It also provides cloud and DevOps services, system integration, security support, and continued maintenance. This range is useful when backend development must be coordinated with infrastructure, deployment, and long-term system operation.

Key Facts

  • Best for: Data-heavy business applications and enterprise platforms
  • Core services: Backend development, custom APIs, database management, system integration, maintenance
  • Technologies: C#, .NET Core, Node.js, Python, PHP, Ruby
  • Project types: SaaS platforms, ERP systems, CRM software, ETL solutions
  • Notable strength: Dedicated backend service supported by cloud, DevOps, and integration capabilities

Contact Information

  • Website: oski.site
  • Phone: +48571282759
  • Email: contact@oski.site
  • Address: Kaupmehe tn 7-120, Tallinn, 10114, Estonia

  • LinkedIn: www.linkedin.com/company/oski-solutions

3. NeoWork

NeoWork approaches backend development through offshore and nearshore team building rather than a conventional fixed-scope agency model. It recruits software developers and other IT professionals from the Philippines and Colombia, then integrates them into a client’s existing workflows. Companies can use the service to expand an engineering department without managing the entire international recruitment process themselves.

The company’s software development offering covers architecture, coding, testing, and work on web and mobile applications. NeoWork is therefore a more suitable option for businesses that already have technical leadership and clearly defined backend requirements than for teams seeking a fully packaged backend project delivered independently.

Key Facts

  • Best for: Companies extending an existing software engineering team
  • Core services: Software developer staffing, IT outsourcing, team integration, technical talent sourcing
  • Delivery model: Dedicated offshore and nearshore professionals
  • Talent locations: Philippines and Colombia
  • Notable strength: Managed recruitment and support for embedded technical staff

Contact Information

  • Website: www.neowork.com
  • Facebook: www.facebook.com/neoworkteam
  • LinkedIn: www.linkedin.com/company/neoworkteam
  • Instagram: www.instagram.com/neoworkteam

4. A-listware

A-listware provides backend engineers through dedicated teams, staff augmentation, and managed software development. Its broader development offering covers projects from initial planning and architecture through coding, testing, deployment, and maintenance. The company can also take responsibility for a specific backend task instead of handling the complete product lifecycle.

Its published technology capabilities include .NET, Java, TypeScript, C++, Python, Go, PHP, Node.js, and Ruby. This gives clients several options for new systems, modernization work, cloud applications, and enterprise software. A-listware is especially relevant when a company needs backend specialists who can join an established team or form a separate managed development unit.

Key Facts

  • Best for: Dedicated backend developers and managed engineering teams
  • Core services: Backend engineering, custom software development, cloud applications, legacy modernization
  • Technologies: .NET, Java, Python, Go, PHP, Node.js, Ruby, TypeScript
  • Delivery models: Dedicated teams, development outsourcing, staff augmentation
  • Notable strength: Flexible engagement for individual specialists or complete teams

Contact Information

  • Website: a-listware.com
  • Phone: +1 (888) 337 93 73
  • Email: info@a-listware.com
  • Address: North Bergen, NJ 07047, USA
  • LinkedIn: www.linkedin.com/company/a-listware
  • Facebook: www.facebook.com/alistware

5. Mobian Studio

Mobian Studio handles backend development as part of end-to-end digital product delivery. Its scope includes mobile applications, enterprise backends, APIs, cloud infrastructure, quality assurance, and connections to legacy systems. Clients can outsource an entire build or add selected engineers to their own team.

The company focuses on products in healthcare, fintech, logistics, telecommunications, education, and enterprise IT. Its capabilities include regulated data integrations, payment flows, automation systems, and architecture designed to accommodate growing user volumes. Post-launch services cover bug resolution, performance monitoring, maintenance, and planning for further scaling.

Key Facts

  • Best for: Mobile products that need backend and cloud engineering
  • Core services: Backend development, API development, cloud infrastructure, legacy integration, QA
  • Industries: Healthcare, fintech, logistics, telecommunications, education
  • Delivery models: Project outsourcing and engineering outstaffing
  • Notable strength: Backend work coordinated with mobile development and post-launch scaling

Contact Information

  • Website: mobian.studio
  • Email: info@mobian.studio
  • Address: Harju maakond, Tallinn, Kesklinna Linnaosa, Masina tn 22, 10113
  • LinkedIn: www.linkedin.com/company/mobian-studio

6. 21century.tech

21century.tech is a compact, remote-first software studio that uses senior engineers alongside AI-assisted development tools. Its public offering covers production software, full-stack features, legacy refactoring, third-party integrations, architecture, testing, documentation, and deployment. Backend engineering is therefore delivered within a broader product or feature engagement rather than presented as an isolated service line.

The studio may appeal to startups and small product teams with a defined specification, prototype, or existing codebase. Every generated contribution is described as human-reviewed, while senior engineers retain responsibility for architecture, business logic, security decisions, and final code quality.

Key Facts

  • Best for: Fast product builds, integrations, and focused refactoring work
  • Core services: Production software development, full-stack features, legacy refactoring, integrations
  • Delivery approach: Senior-led, AI-assisted engineering
  • Location: Miami and remote-first
  • Notable strength: Short development cycles for clearly scoped software work

Contact Information

  • Website: 21century.tech
  • Email: kirill@oski.site

7. SoftPro

SoftPro develops custom software with a strong emphasis on Microsoft technologies. Its stated capabilities span frontend, backend, and CMS development, supported by Azure, ASP.NET, and .NET Core. The company works on web applications, business process automation, cloud solutions, and software tailored to internal operational requirements.

The Microsoft-centered stack makes SoftPro a practical candidate for organizations already using Azure or .NET-based systems. Its portfolio also includes data integration and SaaS projects, while its cloud services cover application development and migration. Compared with larger multi-stack providers, the company presents a more concentrated technical direction.

Key Facts

  • Best for: Microsoft-based backend and cloud projects
  • Core services: Custom software, backend development, web applications, cloud development
  • Technologies: Azure, ASP.NET, .NET Core, Microsoft stack
  • Location: Warsaw, Poland
  • Notable strength: Backend work aligned with Microsoft and Azure environments

Contact Information

  • Website: soft-pro.pl
  • Address: Poland, Warsaw, Mazowieckie Voivodeship, 13 Erasmus Ciołka St. 401

8. Lengreo

Lengreo provides backend implementation within its website development service. Its process starts with business analysis and prototyping, followed by frontend work and then backend development. The company primarily uses JavaScript and WordPress to create business websites, ecommerce sites, portfolios, landing pages, and custom-coded web experiences.

This is a narrower backend offering than those provided by enterprise software firms. Lengreo makes the most sense for businesses whose server-side requirements are tied to a marketing website, content platform, lead generation system, or ecommerce presence. Domain setup, migration assistance, quality assurance, and limited post-launch adjustments are also available.

Key Facts

  • Best for: Website backend implementation connected to marketing and ecommerce
  • Core services: Website development, backend implementation, custom web development, maintenance
  • Technologies: JavaScript and WordPress
  • Project types: Business websites, ecommerce sites, portfolios, landing pages
  • Notable strength: Development coordinated with design and digital marketing work

Contact Information

  • Website: lengreo.com
  • E-mail: hi@lengreo.com 
  • Twitter: x.com/Lengreo 
  • LinkedIn: www.linkedin.com/company/lengreo
  • Instagram: www.instagram.com/lengreo.agency
  • Address: Vrijstraat 9 C/D, 5611 AT Eindhoven, Netherlands
  • Phone: +31 686 147 566

9. net-devs

net-devs builds enterprise software using .NET, JVM technologies, Node.js, Python, and Go. Its engineering practice covers backend systems, cloud-native architecture, legacy modernization, platform development, artificial intelligence integration, and dedicated technical teams. Azure, AWS, Google Cloud, Terraform, and Kubernetes are part of its published cloud capabilities.

The company emphasizes senior ownership throughout an engagement, including initial scoping, architecture, delivery, and review. Its industry work includes fintech, healthcare, logistics, and B2B SaaS, where backend reliability and integration requirements tend to be substantial. This profile makes net-devs better suited to long-lived business systems than simple websites or short promotional builds.

Key Facts

  • Best for: Enterprise backend systems and legacy modernization
  • Core services: Enterprise development, cloud architecture, modernization, platform engineering
  • Technologies: .NET, JVM, Node.js, Python, Go
  • Industries: Fintech, healthcare, logistics, B2B SaaS
  • Location: Warsaw, Poland
  • Notable strength: Senior-led development across multiple backend and cloud stacks

Contact Information

  • Website: net-devs.com
  • Phone: +48 571 282 759
  • Email: contact@net-devs.com
  • Address: Obrzeżna 1D, 02-691 Warszawa
  • LinkedIn: www.linkedin.com/company/net-devs

10. Itexus

Itexus develops backend systems for regulated and integration-heavy financial products. Its engineering scope includes API servers, business logic, microservices, data pipelines, cloud infrastructure, and connections to payment providers, banks, brokers, exchanges, and KYC services. The company works with Java, .NET, TypeScript, and Python, supported by PostgreSQL, MongoDB, Redis, Kafka, and RabbitMQ.

Its portfolio covers digital banking, payments, lending, wealth management, trading, insurance, and digital assets. Itexus also handles legacy modernization, performance improvements, security controls, DevOps, and post-launch maintenance. This makes it particularly relevant when the backend must support sensitive data, high transaction volumes, audit trails, and complex third-party integrations.

Key Facts

  • Best for: Backend development for fintech and regulated financial products
  • Core services: Backend engineering, API development, system integration, cloud infrastructure, legacy modernization
  • Technologies: Java, .NET, TypeScript, Python, PostgreSQL, MongoDB, Redis, Kafka
  • Industries: Banking, payments, lending, investment management, trading, insurance
  • Location: Headquartered in the United States with development offices in Europe
  • Notable strength: Backend architecture for high-load, security-sensitive financial systems

Contact Information

  • Website: itexus.com 
  • Email: info@itexus.com 
  • Address: 8, The Green, STE road, Dover, DE 19901, United States
  • LinkedIn: www.linkedin.com/company/itexus 
  • Facebook: www.facebook.com/itexus 
  • Twitter: x.com/ItexusSoft 
  • Instagram: www.instagram.com/itexus.soft

Conclusion

Backend projects rarely fail because a team cannot write code. Problems usually appear when architecture decisions are rushed, integrations become tangled, or nobody plans for what happens after launch. The providers in this list cover different versions of that challenge, from building complete server-side systems to supplying experienced engineers for an existing team. Gilzor offers a balanced option for custom web and mobile backends, while OSKI Solutions, A-listware, Mobian, and net-devs bring broader engineering and cloud capabilities.

The right choice depends on the work already sitting in front of you. A new product may need APIs, databases, deployment, and architecture handled together, while an established platform might only require a careful refactor or extra backend talent. Before signing a contract, ask who will make the technical decisions, how the system will be tested under real load, and who will maintain it six months later. Those answers tend to reveal far more than a polished services page.