About Our Team Our employees thrive in a culture that's fast-paced and ego-free, where innovation and collaboration are encouraged at every turn. We provide federal agencies instant access to experienced professionals who understand their unique challenges and know the most efficient ways to address them. We continually invest in resources and talent, keeping specialized teams in place to craft tailored technologies. Our solutions empower federal organizations to grow, modernize, and succeed in a rapidly evolving landscape. We value all voices and seek individuals passionate about technology and creative problem-solving. If you enjoy expanding your skill set while tackling real-world business problems, you’ll feel right at home here. Veterans and military spouses are especially encouraged to bring your unique experience to our team. About the Role: We are seeking an experienced Senior Backend / API Application Developer to design, develop, and maintain scalable, secure backend systems and APIs. This role blends Java (Spring Boot) and JavaScript/TypeScript (Node.js) development and focuses heavily on data access, system integrations, and API-driven architectures. You will collaborate with cross-functional Agile teams to deliver high-quality, production-ready solutions that integrate with enterprise systems and external partners. Key Responsibilities Design, develop, and maintain scalable and secure backend applications and RESTful APIs using Java (Spring Boot) and Node.js with TypeScript. Work extensively with relational databases (Salesforce, PostgreSQL, MySQL, Oracle, Microsoft SQL Server) and NoSQL data stores such as MongoDB or DynamoDB. Design and implement efficient data access layers, optimized queries, and database schemas to ensure performance and scalability. Build and maintain system-to-system integrations using RESTful APIs and event-driven messaging patterns. Configure and manage API gateways, proxies, routing, rate limiting, and access control using API management platforms. Develop asynchronous workflows using messaging systems such as Kafka or RabbitMQ. Write clean, efficient, and well-documented code with comprehensive unit and integration tests. Develop and maintain CI/CD pipelines using Jenkins or GitLab CI. Containerize applications using Docker and support orchestration with Kubernetes. Collaborate with Agile teams, participate in code reviews, and contribute to continuous improvement. TAG: #LI-I4DM Qualifications