Java Software Developer

• Core Programming: Strong software development experience using Java and JavaScript.
• Operating Environment: Proven experience developing and working in Linux environments.
• Full-Stack Development: Experience with the Software Development Lifecycle (SDLC), including front-end, back-end, client-side, and server-side development.
• Development Tools: Experience using Git for version control and SQL for database development and querying.
• Integration & Architecture: Experience with API development, system integrations, and UI/UX principles.
• Modern JavaScript Frameworks: Experience with or exposure to Angular, React.js, or Vue.js.
• Cloud Technologies: Familiarity with AWS services, Python, and Microsoft C# to support diverse application architectures.

Experience Requirements

Mid-Level

• 7+ years of experience with a technical degree, or
• 11+ years of experience without a technical degree.

Senior Level

• 14+ years of experience with a technical degree, or
• 18+ years of experience without a technical degree.

Principal Level

• 20+ years of experience with a technical degree, or
• 24+ years of experience without a technical degree.

Preferred Skills

• Experience with MongoDB, Spring, and OSGi.
• Familiarity with Perl, Lua, and configuring or managing NGINX.
• Experience with automation or workflow acceleration frameworks such as Empower.

• Active TS/SCI with Full Scope Polygraph (FSP) is required.
• Positions are 100% onsite.
• Most opportunities are located in the Maryland area, including Columbia, Annapolis, Annapolis Junction, and Fort Meade.
• Due to security requirements, all work must be performed at the designated worksite. Remote work is not available.

About the Opportunity

This position supports advanced software engineering, artificial intelligence, and data-driven initiatives for U.S. Government programs. You’ll join a highly technical environment focused on delivering innovative, mission-critical solutions while working alongside experienced engineers on complex and impactful projects.

This job is posted on behalf of Twenty80 LLC by Top Echelon.

Security Clearance Required: Active TS/SCI with Full Scope Polygraph (FSP)

Develop powerful APIs, optimize backend SQL databases, and integrate modern AWS technologies while building mission-critical software solutions.

In this role, you’ll work across the full software development lifecycle (SDLC), using modern web development technologies and programming languages to build robust client-side and server-side applications. You’ll design seamless integrations, develop intuitive user experiences, and transform complex technical requirements into scalable, high-impact solutions.