Best Java Outsourcing Companies in US/EU [Top-15 List]

Java remains a top choice for businesses that need robust, scalable software, whether for enterprise, mobile apps, or high-performance backend systems. Known for its platform independence, extensive libraries, and powerful capabilities, Java is in high demand among finance, healthcare, eCommerce, and other companies.

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When you need Java expertise, outsourcing can provide access to skilled developers quickly and cost-effectively. Choosing the right Java outsourcing partner is a strategic, important move on this matter. To help you make an informed choice, we’ve put together a list of the top Java outsourcing companies based in the US and Europe, each with unique strengths and specializations. Let's dive in and explore!

Java Software Outsourcing Companies Setting the Benchmark in 2024

• Year founded: 2009
• Employees: 100+
• Headquarters: San Bruno, California, USA
• Tech focus: Java, .NET, Ruby on Rails, React, Magento, eCommerce solutions, custom software development

Founded in 2009, NEKLO is a California-based software development company with tech hubs in Belarus, Poland, Ukraine, and Georgia. NEKLO offers a range of services, from custom software and application development to IT consulting and staff augmentation. The company has particular expertise in Java development, providing solutions to eCommerce and enterprise clients and creating tailored applications for business needs. NEKLO’s work includes projects for Magento-based platforms and numerous industry-specific solutions.

With a team of over 150 employees, NEKLO serves clients worldwide, including companies in the retail, healthcare, and fintech sectors. The company is known for its full-cycle product development services, covering everything from project ideation to deployment and maintenance. NEKLO’s approach emphasizes performance optimization and flexibility, making it a strong partner for businesses seeking Java-based solutions.

How NEKLO Meets the Key Criteria for Excellence in Java Outsourcing

NEKLO stands among the best Java outsourcing companies in the US, with tech hubs in Eastern Europe meeting all the criteria for standards.

• Year founded: 2009
• Employees: 4,000+
• Headquarters: San Francisco, California, USA
• Tech focus: Java, software outsourcing, consulting, staff augmentation

Founded in 2009, BairesDev is a technology solutions company headquartered in San Francisco, California, with development centers across Latin America. Specializing in Java and other technologies, BairesDev offers software outsourcing, consulting, and staff augmentation to clients primarily in North America. The company has grown to over 4,000 employees and has served companies from various sectors, including healthcare, finance, and education.

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BairesDev’s Java development services cover web and mobile applications to enterprise software solutions. The company is known for its efficient scaling ability, leveraging its sizable team and nearshore talent to deliver timely solutions for clients. 

• Year founded: 2012
• Employees: 3,000+
• Headquarters: New York City, New York, USA
• Tech focus: Java, cloud computing, DevOps, data engineering

Vention, founded in 2012 and headquartered in New York City, is a software development company specializing in custom software development and tech consulting, with a strong emphasis on Java. With over 3,000 employees, Vention has development hubs across Eastern Europe and Latin America, providing extensive outsourcing services to clients worldwide. The company serves industries such as healthcare, fintech, and retail.

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Vention offers Java-based solutions for various needs, from digital transformation to application modernization. The company’s broad technical expertise includes cloud computing, DevOps, and data engineering, allowing it to support complex projects. Vention’s commitment to agile processes and a collaborative development approach enables clients to gain scalable, customized solutions tailored to their business goals.

• Year founded: 2013
• Employees: 250+
• Headquarters: Lviv, Ukraine
• Tech focus: Java, web and mobile applications, enterprise systems

Sombra is a Ukrainian IT services company founded in 2013, specializing in custom software development, particularly in Java. With headquarters in Lviv and offices across Ukraine, Sombra employs around 250 professionals. The company caters primarily to clients in North America and Western Europe, working in industries like real estate, finance, and healthcare.

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In Java development, Sombra provides services ranging from web and mobile applications to enterprise software systems. The company is known for its customer-centric approach, emphasizing transparent communication and agile development practices. Sombra’s team delivers custom software solutions that are both scalable and adaptable to changing business needs, making it a reliable partner for long-term collaborations.

• Year founded: 1999
• Employees: 1,000+
• Headquarters: Kraków, Poland
• Tech focus: Java, backend systems, web applications, mobile platforms

Software Mind, established in 1999 in Poland, is a global software development company specializing in Java and other technologies. The company has grown to over 1,000 employees, with a significant presence in Central and Eastern Europe. Software Mind provides end-to-end software solutions to clients in telecommunications, financial services, and healthcare.

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Java is one of Software Mind’s core competencies, and the company offers development services for backend systems, web applications, and mobile platforms. Software Mind has a strong emphasis on innovation, helping clients modernize legacy systems and optimize application performance. By combining agile methodologies with domain-specific expertise, Software Mind creates solutions that support client business goals.

• Year founded: 1995
• Employees: 2,000+
• Headquarters: Minneapolis, Minnesota, USA
• Tech focus: Java, custom software development, digital transformation, application integration

Founded in 1995 and headquartered in Minneapolis, Coherent Solutions is a technology consulting and outsourcing company with a strong Java development team. With over 2,000 employees across North America and Eastern Europe, Coherent Solutions delivers software solutions to industries like healthcare, finance, and retail. The company focuses on custom software development, application integration, and digital transformation.

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Java development at Coherent Solutions includes web and enterprise-level applications, API integrations, and cloud-based solutions. The company employs agile and DevOps practices to streamline the development process and ensure high-quality software. Coherent Solutions is known for its flexible and client-oriented approach.

• Year founded: 2006
• Employees: 100+
• Headquarters: Sofia, Bulgaria
• Tech focus: Java, custom software, system integrations

Dreamix, based in Sofia, Bulgaria, was founded in 2006 and specializes in custom software development with a strong emphasis on Java. Dreamix has a team of about 100 professionals who work closely with clients across Europe and North America. The company focuses on providing solutions for industries such as finance, healthcare, and aviation, delivering customized Java-based applications and system integrations.

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With a focus on Java, Dreamix offers end-to-end development services, including project planning, design, implementation, and support. The company emphasizes agile development and close client collaboration.

• Year founded: 2005
• Employees: 400+
• Headquarters: Zagreb, Croatia
• Tech focus: Java, mobile, web, backend development

Infinum is a Croatian software design and development company founded in 2005. With offices in Croatia, Slovenia, and the United States, the company employs over 400 people. Infinum provides software solutions in various areas, including mobile, web, and backend development, with Java as one of its core technologies. The company works with clients in industries such as finance, healthcare, and telecommunications.

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In Java development, Infinum covers a range of services from web applications to enterprise-level backend systems. The company follows agile methodologies and places a strong emphasis on user-centered design.

• Year founded: 2005
• Employees: 100+
• Headquarters: Vilnius, Lithuania
• Tech focus: Java, web applications, backend systems, IoT

Cogniteq, founded in 2005, is a software development company based in Lithuania, specializing in custom solutions with Java among its core technologies. The company has a team of around 100 professionals who serve clients across Europe and North America. Cogniteq works in various sectors, including logistics, healthcare, and IoT, creating customized applications and system integrations.

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Java development at Cogniteq spans web applications, backend systems, and IoT solutions, with a focus on delivering tailored and efficient software. Cogniteq’s focus on quality assurance and performance optimization ensures robust and scalable applications.

• Year founded: 2006
• Employees: 500+
• Headquarters: Kyiv, Ukraine
• Tech focus: Java, enterprise backend systems, mobile and web platforms

SPD Technology is a Ukrainian software development company founded in 2006, specializing in Java and other enterprise technologies. With offices in Kyiv and globally, SPD Technology has a team of over 500 employees. The company primarily serves clients in finance, healthcare, and media, focusing on delivering complex backend systems, mobile applications, and web-based platforms.

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In Java development, SPD Technology offers services that include system architecture design, data engineering, and application modernization. The company’s approach is highly collaborative, following agile and DevOps principles to ensure timely and efficient project delivery. SPD Technology’s ability to handle complex, large-scale projects has made it a trusted partner for clients seeking tailored software solutions.

• Year founded: 2002
• Employees: 2,000+
• Headquarters: Lviv, Ukraine
• Tech focus: Java, backend development, cloud solutions, data analytics

Founded in 2002 in Lviv, Ukraine, N-iX is a prominent IT services company specializing in custom software development, with Java as a major technology focus. With over 2,000 employees across Europe and North America, N-iX provides solutions for industries like fintech, telecommunications, and logistics. The company’s services range from software engineering to cloud solutions and data analytics.

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Java is a core technology at N-iX, and the company offers services such as backend development, application integration, and system modernization. N-iX emphasizes agile methodologies and client collaboration, ensuring that solutions align closely with business objectives. The company’s commitment to quality and innovation has led to partnerships with well-known global brands, supporting their digital transformation efforts.

• Year founded: 2015
• Employees: 200+
• Headquarters: Lviv, Ukraine
• Tech focus: Java, product design, web and backend systems

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Kindgeek is a software development company founded in 2015 and headquartered in Lviv, Ukraine. Specializing in Java, the company has around 200 employees and works with clients in industries like finance, eCommerce, and education. Kindgeek provides end-to-end development services, from product design and prototyping to development and support.

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In Java development, Kindgeek covers everything from web applications to backend systems. The company is known for its transparency and collaborative work style, involving clients at each stage of the development process.

• Year founded: 2008
• Employees: 750+
• Headquarters: Novi Sad, Serbia
• Tech focus: Java, backend systems, web applications, API integrations

Vega IT, established in 2008 in Novi Sad, Serbia, is a software development company specializing in custom solutions, including Java. With a team of over 750 professionals, Vega IT provides services to clients in sectors like healthcare, finance, and logistics. The company’s expertise covers end-to-end development, from ideation to deployment, with a focus on quality and scalability.

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Java development at Vega IT includes backend systems, web applications, and API integrations. The company follows agile principles and emphasizes collaboration with clients, ensuring solutions align with business objectives. Vega IT’s extensive experience in delivering customized software makes it a strong partner for clients looking to optimize operations and innovate in their industries.

• Year founded: 2014
• Employees: Small team (exact number not specified)
• Headquarters: Kraków, Poland
• Tech focus: High-performance Java solutions, backend development, system integrations

Stratoflow, a Polish software development company, was founded in 2014 and specializes in high-performance Java-based solutions. With a relatively small team, Stratoflow focuses on delivering low-latency applications, primarily in sectors like finance and telecommunications. The company is known for its expertise in performance optimization, making it a go-to choice for businesses requiring fast, reliable software.

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Stratoflow’s Java services include backend development, system integrations, and performance tuning. The company’s experience with complex, data-intensive applications allow it to tackle high-demand projects. Stratoflow emphasizes agile methodologies and works closely with clients to create solutions that meet stringent performance standards.

• Year founded: 2008
• Employees: 50+
• Headquarters: San Jose, California, USA
• Tech focus: Java, mobile and web app development, AI, machine learning

Founded in 2008, Diffco is a software development company based in San Jose, California, specializing in mobile and web applications, with a focus on artificial intelligence and machine learning solutions. The company provides a range of development services, from product design and prototyping to full-scale app development and deployment.

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Diffco’s Java expertise supports the development of high-performance backend systems and applications. Known for its ability to integrate AI and machine learning into mobile and web platforms, Diffco’s team leverages these technologies to create intelligent, user-friendly products.

How To Choose a Java Outsourcing Provider: Check List

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1. Experience in Your Domain: Look for providers experienced in your industry to ensure they understand the specifics of your market and its unique challenges.
2. Verify Technical Expertise: Ensure the provider has strong Java expertise, including knowledge of frameworks like Spring, Hibernate, and Java EE, as well as relevant libraries.
3. Assess Team Size and Structure: Confirm they have a sufficient team size to meet your project’s needs: project managers, developers, and QA specialists.
4. Evaluate Communication: Ensure the provider offers open, consistent, and responsive communication.
5. Request Case Studies or Portfolio: Ask to see examples of similar Java projects they have completed. 
6. Inquire About Development Process: Understand their approach to development — whether they follow agile, waterfall, or a hybrid method — and how it aligns with your project goals.
7. Evaluate Code Quality Practices: Ask about their coding standards, peer reviews, and testing practices to ensure high-quality deliverables.
8. Consider Security Standards: Ensure the provider follows strong security practices, such as data encryption, secure coding, and compliance with industry standards like GDPR.
9. Review Tools: Find out what project management tools they use (e.g., Jira, Trello, or Asana) and whether you’ll have access for real-time updates and transparent progress tracking.
10. Look Into Flexibility and Scalability: Choose a provider that can scale their resources as needed, especially if you anticipate project growth or fluctuating needs.
11. Review Testimonials: Self-explanatory.
12. Review Ownership of Source Code: Ensure you will retain ownership of the source code and other intellectual property developed during the project.
13. Ask About Processes: A quality provider has established onboarding, communication and reporting processes.
14. Examine Support and Maintenance Services: Check if they offer support packages to handle updates, bug fixes, and other ongoing needs.
15. Evaluate Knowledge Transfer Protocols: If your project is time-sensitive, ensure they have a solid knowledge transfer process to get started quickly and avoid delays.
16. Confirm Compliance with Legal Requirements: Verify that they comply with legal standards and are willing to sign non-disclosure agreements (NDAs).
17. Check Cost and Payment Terms: Discuss pricing models (fixed-price, hourly, or dedicated team) and payment terms in detail to ensure they align with your budget.
18. Evaluate Cultural Fit: Consider cultural compatibility, especially if working across borders. A shared work culture can enhance communication and teamwork.
19. No-binding Consultation & Project Estimate: Ask if they offer a no-binding consultation or a project estimate to help you better understand potential costs, timelines, and resources without any commitment.
20. Trial or Other Guarantees: Look for providers offering trial periods, pilot projects, or performance guarantees. These options allow you to evaluate their work quality and compatibility with your team before committing to a full project.

Summing up

To wrap up, by partnering with the right Java outsourcing company, you can bring in the skills and experience to handle your software development. You benefit from talented developers and proven processes, which let you save on costs and get quality results faster. 

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Whether you’re looking to build something new or scale up an existing project, NEKLO Java experts can make it happen.