Principal Java Developer | SPK Consultants Inc

The Principal Java Developer role in Burlington, Massachusetts, offers an exciting opportunity for highly experienced software engineers to work on complex, enterprise-grade trading systems within the financial technology space. This 12+ month contract-to-hire position is ideal for senior-level Java professionals seeking long-term growth, technical ownership, and exposure to challenging, high-performance systems.

The role supports H-1B and other eligible work authorizations, making it suitable for international professionals looking to advance their careers in the United States. Working within a fast-paced, agile environment, the successful candidate will play a critical role in shaping backend architecture and delivering scalable solutions for financial applications.

As a Principal or Senior Java Developer, you will focus on building and enhancing middle-tier and server-side functionality for a sophisticated trading platform. The role emphasizes deep hands-on development while also influencing architectural standards and technical direction. You will collaborate with a highly skilled engineering team, contribute as a senior individual contributor, and help deliver new products used in demanding financial environments.

This position is well-suited for professionals with extensive Java experience who enjoy solving complex problems, optimizing performance, and working on mission-critical systems in fintech or financial services.

SPK Consultants Inc. is a technology consulting and staffing firm that partners closely with direct clients to deliver top-tier technical talent for mission-critical projects. The firm is known for supporting long-term engagements, contract-to-hire opportunities, and roles within highly specialized domains such as financial services and enterprise software.

SPK Consultants works with organizations that value senior expertise, innovation, and strong engineering practices, providing candidates with access to challenging roles and career-defining projects.

• Design, develop, and enhance middle-tier and server-side Java components for trading systems
• Influence application architecture, coding standards, and technical design decisions
• Contribute as a senior individual contributor within an agile, high-performing engineering team
• Develop multi-tier, multi-threaded Java applications with strong performance and scalability
• Collaborate with cross-functional teams to deliver new features and product enhancements
• Support the delivery of commercial software products used by financial market clients

• Bachelor’s or Master’s degree in Computer Science or a related field
• 7–10+ years of commercial software development experience, with strong Core Java expertise
• Solid experience with SQL and relational databases such as Oracle or SQL Server
• Proven background in multi-tier application development and object-oriented design
• Experience with web services, XML/XSL, and application servers (Tomcat, JBoss, Web Logic, or Web Sphere)
• Financial services or fintech experience strongly preferred
• Excellent communication skills and ability to work independently in a dynamic environment

This Principal Java Developer position offers a rare chance to work on sophisticated financial systems while influencing architecture and product direction. With visa-friendly eligibility, a strong technical focus, and exposure to complex trading platforms, the role is ideal for senior Java professionals seeking impact, stability, and growth within the U.S. fintech landscape.