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MKS2 Technologies, LLC, an award-winning high growth small business, creates innovative and customer-centric technology solutions in the areas of Cyber Security, Instructional Design and Training, Software Engineering and IT Support Services to improve the security and well-being of our clients. Our commitment to excellence and our “Mission First” orientation has resulted in steady growth and an expanding client base across government agencies. We have employees nationwide and for the past three consecutive years were named one of the fastest growing Veteran-owned companies in the nation. Please take a moment to browse through our website and learn more about what it means to serve with MKS2. Senior Java Developer Location: Remote (U.S.) Salary: $130,000 - $140,000 annually Clearance: Public Trust Eligibility Summary The Senior Java Engineer will lead the design, development, migration, and support of scalable Java-based microservices and APIs in a modern cloud environment. This role requires strong hands-on engineering capability, technical leadership, and experience modernizing legacy systems. Responsibilities Plan and execute migration from legacy monolithic code to modern, scalable Java-based microservices without disrupting live systems. • Lead API design and development, including specifications, endpoints, data models, and protocols such as REST and GraphQL. • Lead data strategy and migration of shared databases into service-specific data layers while maintaining data integrity. • Identify and resolve data or system bottlenecks early in the development lifecycle. • Deploy and operate workloads on Kubernetes in AWS, including deployment manifests, Helm, scaling, rollouts, and resource requests/limits. • Tune and optimize databases through query performance tuning, indexing strategy, connection pooling, migration strategy, and caching patterns. • Write production-grade code for core services and remain deeply involved in the codebase. • Ensure seamless API integration with internal systems, external systems, applications, and third-party services. • Promote adoption of AI in the API development lifecycle, including use of GitHub Copilot for coding. • Implement authentication, authorization, encryption, and other security best practices to protect data and services. • Monitor and optimize API performance, scalability, and reliability. • Support on-call operations. Qualifications & Skills • 8+ years of experience leading technical teams in building scalable modern Java services. • Proven experience breaking down large, complex legacy monoliths into smaller, independent services. • Deep hands-on knowledge of modern Java, Spring Boot, Hibernate, and REST API development. • Experience with relational databases such as PostgreSQL or MySQL. • Strong experience designing, building, and maintaining APIs. • Ability to lead engineering teams while remaining hands-on with development. • Experience with Docker, Kubernetes, and Helm. • Familiarity with application security principles and secure development practices. • Familiarity with Git version control. • Familiarity with OAuth. • Ruby-to-Java migration experience preferred, but not required. Diversity creates a healthier atmosphere: MKS2 Technologies is proud to be an Equal Employment Opportunity / Affirmative Action employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, national origin, protected veteran status, disability status, sexual orientation, gender identity or expression, marital status, genetic information, or any other characteristic protected by law. Originally posted on Himalayas