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Software Engineer Jobs in Washington, DC

Sr. Backend Developer (Java & Kafka)

Expert Technology Services

Washington, DC

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JOB DETAILS
SKILLS
AWS Lambda, Agile Programming Methodologies, Amazon Simple Storage Service (S3), Amazon Web Services (AWS), Apache Avro, Apache Kafka, Application Programming Interface (API), Atlassian JIRA, Automation, Best Practices, Cloud Applications, Cloud Computing, Code Reviews, Computer Science, Continuous Deployment/Delivery, Continuous Improvement, Continuous Integration, Cross-Functional, Data Processing, Database Design, Database Optimization, DevOps, Enterprise Protection, Git, High Throughput, Java, Java Platform Enterprise Edition (Java EE/J2EE), Jenkins, Logistics, Logistics Management, Maintain Compliance, Mentoring, Messaging Technology, Microservices, Microsoft Windows Azure, OAuth, Performance Tuning/Optimization, PostgreSQL, Problem Solving Skills, REST (Representational State Transfer), Scalable System Development, Scrum Project Management and Software Development, Security Compliance, Security Protocols, Software Engineering, System Integration (SI), Technical Leadership, User Experience Design (UXD), User Interface/Experience (UI/UX)
LOCATION
Washington, DC
POSTED
2 days ago
Job Summary Senior Backend Developer (Java & Kafka)

- Lead Backend Development: Design, develop, and maintain enterprise-grade backend services and REST APIs using Java and Spring Boot for critical logistics and yard management workflows.
- Event-Driven Architecture: Architect and implement resilient, event-driven integrations leveraging Apache Kafka, including topic management, consumer groups, and messaging workflows.
- System Integration: Build scalable integration patterns for both internal and external systems using modern messaging, batch processing, and data synchronization techniques.
- Database Optimization: Design and optimize PostgreSQL database models, write complex queries, and implement indexing strategies for high-throughput applications.
- Cloud & DevOps Deployment: Deploy and support cloud-native applications on AWS (ECS/Fargate, Lambda, API Gateway, S3) and contribute to CI/CD automation pipelines.
- Technical Leadership: Conduct code reviews, mentor junior developers, promote engineering best practices, and ensure compliance with security and observability standards.
- Cross-Functional Collaboration: Work closely with Product Owners, Architects, UX Designers, and business stakeholders in an Agile/Scrum environment to refine requirements and resolve production issues.
- Continuous Improvement: Champion technical excellence and contribute to ongoing process and technology enhancements within the engineering team.
- Qualifications:
- 8+ years of enterprise Java development experience (5+ years in Spring Boot, REST APIs, microservices)
- 3+ years of hands-on Apache Kafka experience
- Strong PostgreSQL (or similar) skills in database design and performance optimization
- Experience with AWS core services and DevOps tools (Git, Jenkins, Bitbucket, Jira, SonarQube)
- Bachelor's degree in Computer Science or related field (or comparable experience)
- Preferred: Experience in transportation/logistics industries, knowledge of frontend frameworks (Angular), Schema Registry/Avro, and enterprise security protocols (OAuth2/OIDC, Azure Entra ID).

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