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Job Description: Design, develop, test, and maintain enterprise applications, microservices, and backend services using Java and Spring Boot Build data-access components with Spring Data, JPA/Hibernate, and JDBC Develop synchronous and asynchronous integrations between enterprise applications Design and implement secure RESTful APIs using an API-first approach with OpenAPI Apply API standards for versioning, error handling, authentication, authorization, pagination, and observability Participate in API design and governance reviews Develop event-driven integrations with JMS and Apache Kafka, including producers, consumers, listeners, topics, queues, and event-processing components Build resilient messaging with acknowledgment, retry, timeout, error-handling, and dead-letter queue/topic strategies Work with Kafka topics, partitions, consumer groups, offsets, serialization, and schema management Design and optimize relational database components, schemas, indexes, stored procedures, transactions, and SQL queries Version database schema changes with Flyway or Liquibase Develop automated unit, integration, API, database, messaging, and regression tests Use automated and AI-assisted approaches to generate test cases, test data, and test scenarios Package applications with Docker and deploy, operate, and troubleshoot them on Kubernetes Build and maintain CI/CD pipelines integrating builds, tests, migrations, security scanning, container builds, and Kubernetes deployments Build and maintain API/developer portals with interactive OpenAPI documentation, API catalogs, guides, examples, and onboarding workflows Develop responsive, accessible web applications and portal interfaces in React and/or Angular using JavaScript/TypeScript, HTML, and CSS Troubleshoot application, integration, database, messaging, and performance issues Participate in peer code reviews and continuous improvement Collaborate with DevOps, platform engineering, UX, API, and backend teamsRequirements: U.S. citizenship CBP positions: able to obtain and maintain a CBP Public Trust background investigation Department of State positions: active Secret clearance Approximately three to six (3–6) years of professional software development experience Strong Java programming experience and hands-on experience with Spring Boot and the Spring ecosystem Experience designing and developing REST APIs and microservices, with working knowledge of OpenAPI/Swagger and API-first development Experience with enterprise messaging technologies such as JMS and Apache Kafka Strong SQL and relational database development experience with PostgreSQL, Oracle, MySQL, or comparable databases Experience using JPA/Hibernate, Spring Data, and/or JDBC Experience writing automated unit, integration, API, database, and messaging tests with tools such as JUnit, Mockito, and REST Assured Experience with Docker and containerized application development, and working knowledge of Kubernetes Experience with automated CI/CD pipelines, Git, and modern source-control workflows Experience developing web applications with React and/or Angular, and working knowledge of JavaScript and/or TypeScript Understanding of application, API, messaging, and database security principles Strong debugging, troubleshooting, and problem-solving skills Able to work remotely on East Coast hours and travel approximately once per quarter Desired: Experience with Spring Kafka and Spring JMS Desired: Experience with Kafka consumer groups, partitioning, schema management, retries, and dead-letter topics Desired: Experience with JMS-compatible messaging platforms such as IBM MQ, ActiveMQ, or Artemis Desired: Experience with automated or AI-assisted test-case generation and Arazzo or comparable API testing tools Desired: Experience with Flyway or Liquibase Desired: Experience with API/developer portals such as Scalar, Redocly, Swagger UI, or Backstage Desired: Experience with AWS, Azure, or Google Cloud Desired: Experience deploying Spring Boot applications to Kubernetes, with familiarity with Helm Desired: Understanding of OAuth 2.0, OpenID Connect, JWT, and API authentication and authorization Desired: Familiarity with API gateways, API management platforms, observability, DevSecOps, and automated security scanningBenefits: Remote work on East Coast hours Travel approximately once per quarter Immediate start Opportunity to work on mission-critical, cloud-native federal civilian programs Work with AWS, Azure, and Google Cloud environments Exposure to modern DevOps, API, messaging, and cloud technologies