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Backend Java Developer

Markon

$110,000 - $175,000
Dec 2, 2025
Chantilly, VA, US
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Markon is seeking a Mid-Level Backend Java Engineer to join their development team supporting an IC customer. This role is responsible for designing, building, and maintaining secure, scalable backend services for mission-driven federal initiatives.

Requirements

  • 3–6 years of hands-on Java development experience
  • Strong understanding of Spring Boot / Spring Framework
  • Experience building and consuming RESTful APIs
  • Proficiency with SQL and one or more relational databases (PostgreSQL, MySQL, Oracle, etc.)
  • Familiarity with Git, CI/CD pipelines, and Agile development methods
  • Experience with containerization (Docker) or cloud environments (AWS, Azure, GCP)

Responsibilities

  • Design, develop, test, and deploy backend Java applications and microservices.
  • Build RESTful APIs and integrations between internal systems and external services.
  • Implement scalable application architectures following best practices and federal security standards.
  • Maintain and enhance existing applications, ensuring performance, reliability, and compliance.
  • Participate in Agile ceremonies (sprint planning, daily standups, retrospectives, etc.).
  • Collaborate with DevOps, QA, security, and product teams to deliver high-quality solutions.
  • Troubleshoot production issues and support root-cause analysis.

Other

  • Active TS/SCI with Full scope polygraph
  • Bachelor’s degree in Computer Science, Information Systems, Engineering, or related field
  • Write clear documentation for code, processes, and system configurations.