15 Best Backend Development Companies in Europe (2026)

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Backend development plays a central role in how digital products operate, from data processing and API connections to application performance and security. European backend development companies work on different types of projects, including SaaS platforms, mobile applications, enterprise systems, and custom software products. This list highlights companies with experience in backend engineering, integrations, cloud environments, and long-term software development support.

1. Gilzor

Gilzor develops custom digital products with backend engineering as part of a wider software development process. The company works on server-side systems for web and mobile applications, including API development, database structures, integrations, and backend support for products at different stages of growth. Its work covers areas such as fintech, healthcare, ecommerce, and education, with a focus on building software that can be extended as business requirements change. 

The company also supports MVP development and product improvements, helping teams create backend foundations for new applications or update existing systems. Backend work can include application architecture, integrations with third-party services, and ongoing technical support. 

Key Facts

  • Best for: Startups, SMBs, and companies building custom digital products
  • Core services: Backend development, API development, database management, software development
  • Specialization: Backend systems for web and mobile applications
  • Industries: Fintech, healthcare, ecommerce, education
  • Location: Warsaw, Poland

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2. The Software House

The Software House provides software development services for companies building web platforms and digital products. Its engineering teams work on backend systems, application development, cloud solutions, and modernization projects.

The company is often involved in projects where backend architecture needs to support long-term product development, integrations, and growing user demand.

Key Facts

  • Best for: Companies building complex digital platforms
  • Core services: Backend development, web applications, cloud engineering
  • Specialization: Product engineering and software modernization
  • Location: Poland

Contact Information

  • Website: tsh.io
  • Email: hello@tsh.io
  • Facebook: www.facebook.com/TheSoftwareHousePL
  • Twitter: x.com/RealTSH
  • LinkedIn: www.linkedin.com/company/the-software-house
  • Instagram: www.instagram.com/thesoftwarehouse
  • Address: ul. Dolnych Wałów 8, Gliwice, Poland

3. OSKI Solutions

OSKI Solutions provides backend development services focused on APIs, databases, server-side applications, and cloud-based systems. The company works with technologies such as .NET and Node.js and covers backend development from data models and business logic to deployed services and integrations. 

Its backend work is aimed at products that need reliable infrastructure behind web and mobile interfaces. OSKI also works on software modernization, custom applications, and systems that require integration with existing platforms. 

Key Facts

  • Best for: Companies building custom software platforms and backend-heavy applications
  • Core services: Backend development, API development, cloud solutions, software modernization
  • Specialization: Server-side systems and application infrastructure
  • Technologies: .NET, Node.js, cloud technologies
  • Location: Tallinn, Estonia

Contact Information

  • Website: oski.site
  • Email: contact@oski.site
  • LinkedIn: www.linkedin.com/company/oski-solutions
  • Address: Kaupmehe tn 7-120, Tallinn, 10114, Estonia
  • Phone: +48571282759

4. ELEKS

ELEKS provides custom software development services, including backend engineering, cloud solutions, data management, and enterprise software development. The company works with organizations building large-scale applications and systems.

Its backend capabilities cover application architecture, integrations, database solutions, and software modernization for different industries.

Key Facts

  • Best for: Large organizations and enterprise software projects
  • Core services: Backend development, cloud engineering, software development
  • Specialization: Enterprise applications and digital transformation projects
  • Location: Europe

Contact Information

  • Website: eleks.com
  • Facebook: www.facebook.com/ELEKS.Software
  • Twitter: x.com/ELEKSSoftware
  • LinkedIn: www.linkedin.com/company/eleks
  • Address: 7 Naukova St., Building G, Lviv, Ukraine, 79060 
  • Phone: +380-32-247-0357

5. A-listware

A-listware provides backend development as part of its broader software engineering services. The company works on web applications, enterprise platforms, integrations, and custom software projects using technologies including .NET, Java, Python, PHP, Node.js, and Go. 

Its backend capabilities include application architecture, API development, system integration, QA, maintenance, and support. The company can work with businesses that need a complete development team or additional engineering capacity for existing products. 

Key Facts

  • Best for: Businesses needing custom software development and engineering support
  • Core services: Backend development, web applications, integrations, QA, maintenance
  • Specialization: Custom business applications and software platforms
  • Technologies: .NET, Java, Python, PHP, Node.js, Go
  • Location: United Kingdom and European delivery operations

Contact Information

  • Website: a-listware.com
  • Email: info@a-listware.com
  • Facebook: www.facebook.com/alistware
  • LinkedIn: www.linkedin.com/company/a-listware
  • Address: St. Leonards-On-Sea, TN37 7TA, UK
  • Phone: +44 (0)142 439 01 40

6. Intellectsoft

Intellectsoft develops custom software solutions for businesses that need enterprise applications, backend systems, and digital platforms. Its services include software engineering, cloud development, system integration, and application modernization.

The company works with organizations that require backend infrastructure supporting business processes, customer-facing platforms, and internal systems.

Key Facts

  • Best for: Enterprise software projects
  • Core services: Backend development, cloud solutions, software engineering
  • Specialization: Enterprise applications and integrations
  • Location: Europe and international markets

Contact Information

  • Website: www.intellectsoft.net
  • Email: info@intellectsoft.net
  • Facebook: www.facebook.com/Intellectsoft
  • Twitter: x.com/Intellectsoft
  • LinkedIn: www.linkedin.com/company/intellectsoft
  • Address: 500 Fashion Ave, Fl 8A, New York City, NY 10018, US
  • Phone: +1 (650) 233-6196

7. Net-devs

Net-devs focuses on software engineering for technically complex products, including enterprise systems, cloud platforms, and backend-driven applications. Its backend technology stack includes .NET, JVM technologies, Node.js, Python, and Go, allowing the company to work across different software architectures.

The company also works with cloud platforms such as AWS, Azure, and Google Cloud. Its approach is oriented toward applications where architecture, scalability, and maintainability are important factors. 

Key Facts

  • Best for: Enterprise applications and technically complex platforms
  • Core services: Backend engineering, cloud development, enterprise software, AI engineering
  • Specialization: Scalable software systems and cloud-based solutions
  • Technologies: .NET, Node.js, Python, Go, JVM technologies
  • Location: Warsaw, Poland

Contact Information

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

8. Altoros

Altoros provides software development services with expertise in backend engineering, cloud platforms, distributed systems, and enterprise applications. The company works with businesses developing scalable software solutions and technology platforms.

Its backend-related services include application development, cloud architecture, integrations, and modernization of existing systems.

Key Facts

  • Best for: Cloud-focused software projects
  • Core services: Backend development, cloud engineering, distributed systems
  • Specialization: Enterprise technology platforms
  • Location: Europe and international operations

Contact Information

  • Website: www.altoros.com
  • Email: d.castelli@altoros.com
  • Facebook: www.facebook.com/Altoros
  • Twitter: x.com/altoros
  • LinkedIn: www.linkedin.com/company/altoros-systems
  • Address: Młynarska st. 42 /115, 01-171, Warsaw, Poland
  • Phone:+48 789 119 528 

9. SoftPro

SoftPro develops custom software and web applications with a focus on Microsoft technologies and modern web stacks. Its backend capabilities include application development, cloud solutions, API-related work, and business software projects. 

The company works with technologies including .NET Core, ASP.NET, Azure, Node.js, and related frontend frameworks. Its projects include CRM systems, SaaS platforms, business portals, and integrated software solutions. 

Key Facts

  • Best for: Businesses building custom applications with Microsoft-based technologies
  • Core services: Backend development, web applications, cloud development, software engineering
  • Specialization: Enterprise and business software solutions
  • Technologies: Azure, ASP.NET, .NET Core, Node.js
  • Location: Warsaw, Poland

Contact Information

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

10. Lengreo

Lengreo works on custom software development projects, including backend engineering, web applications, integrations, and product development support. The company provides development services for businesses that need technical teams to build or extend digital products.

Its backend work can include server-side application development, API integrations, database-related tasks, and support for software platforms that require ongoing improvements.

Key Facts

  • Best for: Companies looking for custom development support
  • Core services: Backend development, software development, integrations
  • Specialization: Custom digital products
  • Project types: Web applications, business software, integrations

Contact Information

  • Website: lengreo.com
  • Email: hi@lengreo.com
  • LinkedIn: www.linkedin.com/company/lengreo
  • Instagram: www.instagram.com/lengreo.agency
  • Phone: +31 686 147 566

11. Mobian Studio

Mobian Studio develops digital products combining backend, frontend, mobile, and AI capabilities. The company works on custom software projects, web applications, APIs, and backend systems for industries including healthcare, fintech, logistics, and enterprise IT. 

Its engagement models include project-based development and team extension. This approach allows companies to add backend engineers or work with a full development team depending on project needs.

Key Facts

  • Best for: Companies combining backend, web, and mobile development needs
  • Core services: Backend development, web applications, APIs, custom software
  • Specialization: Digital products with multiple technology components
  • Industries: Healthcare, fintech, logistics, education
  • Location: Tallinn, Estonia

Contact Information

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

12. Itexus

Itexus develops custom software solutions with backend engineering as a major part of its work. The company builds web applications, enterprise systems, APIs, and software platforms, with significant experience in fintech and other industries requiring complex business logic. 

Its backend services include architecture planning, database development, integrations, DevOps support, and application modernization. The company also works with startups and established businesses building new software products.

Key Facts

  • Best for: Fintech products and complex business applications
  • Core services: Backend development, custom software, APIs, DevOps, QA
  • Specialization: Financial and enterprise software systems
  • Industries: Fintech, healthcare, insurance, retail
  • Location: Warsaw, Poland

Contact Information

  • Website: itexus.com
  • Email: info@itexus.com
  • Facebook: www.facebook.com/itexus
  • Twitter: x.com/ItexusSoft
  • LinkedIn: www.linkedin.com/company/itexus
  • Instagram: www.instagram.com/itexus.soft
  • Address: Żurawia 6/12/lok 766, 00-503 Warszawa, Poland

13. ScienceSoft

ScienceSoft provides software development services covering backend engineering, application development, integrations, and system modernization. The company works with businesses across healthcare, retail, finance, and other industries.

Its backend teams handle areas such as APIs, databases, enterprise applications, and software maintenance.

Key Facts

  • Best for: Companies needing long-term software development support
  • Core services: Backend development, software engineering, integrations
  • Specialization: Enterprise and industry-specific applications
  • Industries: Healthcare, finance, retail, manufacturing

Contact Information

  • Website: www.scnsoft.com
  • Email: eu@scnsoft.com
  • Facebook: www.facebook.com/sciencesoft.solutions
  • Twitter: x.com/ScienceSoft
  • LinkedIn: www.linkedin.com/company/sciencesoft
  • Address: Terbatas iela 14-3, Riga, LV-1011
  • Phone: +371 66 011 905

14. N-iX

N-iX develops software solutions for businesses that need engineering teams for backend development, cloud systems, data platforms, and enterprise applications. The company works across industries including finance, healthcare, manufacturing, and logistics.

Its backend services include application development, cloud migration, integrations, and support for complex software environments.

Key Facts

  • Best for: Enterprise software and cloud projects
  • Core services: Backend development, cloud engineering, data solutions
  • Specialization: Large-scale software systems
  • Location: Europe

Contact Information

  • Website: www.n-ix.com
  • Email: contact@n-ix.com
  • Facebook: www.facebook.com/N.iX.Company
  • Twitter: x.com/N_iX_Global
  • LinkedIn: www.linkedin.com/company/n-ix
  • Address: 6 Bevis Marks, London EC3A 7BA, UK
  • Phone: +442037407669

15. Iflexion

Iflexion provides custom software development services, including backend development, enterprise applications, integrations, and web platforms. The company works on projects that require tailored software rather than standard solutions.

Its backend expertise includes database-driven applications, APIs, business systems, and software improvements for existing platforms.

Key Facts

  • Best for: Custom software projects with specific business requirements
  • Core services: Backend development, web applications, integrations
  • Specialization: Custom enterprise software
  • Location: Europe

Contact Information

  • Website: www.iflexion.com
  • Email: contact@iflexion.com
  • Address: 3rd floor, 5-8 Dysart Street, London, EC2A 2BX
  • Phone: +44 203 687 2280

Conclusion

Choosing a backend development company in Europe depends on the type of product, technical requirements, industry needs, and the level of support a business expects during development. Some companies focus on building custom backend systems from the ground up, while others bring experience in cloud solutions, integrations, enterprise applications, or long-term software maintenance. The right partner should match the project’s architecture, scalability goals, and internal development processes rather than simply offer a broad list of technologies. This guide provides a starting point for comparing backend development companies and identifying teams that fit different software development needs.

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