Microservices Developer/Engineer

Microservices Developer/Engineer

Job Location: Remote

Eligibility/Clearance: Ability to obtain and maintain a Public Trust clearance and successfully pass a thorough Government background screening process requiring the completion of detailed forms and fingerprinting. This position has a U.S. residency requirement. The USPS security clearance process requires the selected candidate to have resided in the U.S. (including U.S. Territories) for the last five years as follows: U.S. Citizens cannot have left the U.S. (including U.S. Territories) for longer than 6 months consecutively in the last 3 years (unless they meet certain exceptions). Non-U.S. Citizens cannot have left the U.S. (including U.S. Territories) for longer than 90 days consecutively in the last 3 years.

Job Description: Seeking a highly skilled Software Engineer/Microservices to support software development for our USPS customers. The Microservices Developer will be responsible for designing, building, and maintaining scalable backend services that power the platform's RESTful APIs.

Required Experience:

• A minimum of 8 years of experience in Java development, with at least 2 years of microservices development experience.
• Ability to design, build, and maintain Spring Boot microservices using Java 21 and Java 25.
• Ability to create and evolve RESTful APIs with clear contracts, versioning, and backward compatibility.
• Implement input validation, error handling, idempotency, and standardized response models.
• Integrate services with on-prem and AWS-hosted databases during migration phases.
• Plan and execute data-access changes to support hybrid connectivity (on-prem to AWS) safely.
• Optimize database interactions, including query tuning, connection pooling, and transaction boundaries.
• Containerize services and maintain production-ready Docker images.
• Deploy and operate services on Kubernetes with health probes, resource limits, and autoscaling.
• Build and maintain CI/CD pipelines for build, test, security scan, and deployment automation.
• Implement secure service-to-service and client authentication/authorization.
• Manage secrets and configuration using AWS-native and Kubernetes-native approaches.
• Add observability: structured logging, metrics, distributed tracing, dashboards, and alerting.
• Troubleshoot incidents across application, container, cluster, network, and database layers.
• Improve resiliency with retries, timeouts, circuit breakers, and graceful degradation patterns.
• Participate in migration planning from on-prem infrastructure and data stores to AWS.
• Support release validation in staging and production, including rollback readiness.
• Write and maintain unit, integration, contract, and performance tests.
• Address vulnerabilities by upgrading dependencies and remediating CVEs in application libraries.
• Collaborate with QA, platform, security, and architecture teams on standards and best practices.
• Document APIs, operational runbooks, and service ownership responsibilities.
• Experience with Agile development environments with tools like VersionOne (or similar platform)

What You'll Need To Succeed Bring your expertise and drive for innovation to GDIT. The Microservices Developer must have:

Education: Bachelor's degree in a relevant field from an accredited College/University is preferred. Alternative Path: If the candidate does not possess a relevant four-year degree, an additional four years of relevant work experience will be required.

Required Technical Skills and Expertise: Developing production-grade microservices using Java 21 and Java 25. Implementing clean and consistent API contracts, and ensuring secure, reliable integration with internal and external systems. Collaborate closely with product, architecture, and QA teams to deliver high-quality releases, support deployment and validation in staging and production, and troubleshoot issues across distributed environments. Over time, the developer will drive improvements in service performance, resiliency, and observability while contributing to shared engineering standards, reusable components, and automation across the microservices ecosystem. Strong problem-solving skills, clear communication, and a commitment to continuous improvement are essential for success in this role.

Arena Technical Resources, LLC, (ATR) is an Equal Opportunity Employer (EOE) who will provide equal employment opportunity to employees and applicants for employment without regard to race, ethnicity, religion, color, sex, pregnancy, national origin, age, veteran status, ancestry, sexual orientation, gender identity or expression, marital status, family structure, genetic information, or mental or physical disability.