Senior Software Engineer (Full-Stack)

Location: On-site in Fort Meade, Maryland, United States.

Salary: $190,000–$240,000 per year.

Company

Belay Technologies provides systems automation, full-stack development, and technology and engineering solutions for the Department of Defense and commercial customers.

What you will do

• Architect, build, and maintain large-scale distributed web applications and full-stack solutions using JavaScript, TypeScript, Node.js, and Python.
• Design scalable microservices, REST middleware, and backend data-processing pipelines for high-tempo mission requirements.
• Deploy and manage cloud-native services across MACHINESHOP, AWS, C2S, and other high-side environments using infrastructure-as-code and DevOps automation.
• Create and maintain automated GitLab CI/CD pipelines for rapid, secure, and reliable software delivery.
• Collaborate with cross-functional teams, mission analysts, vulnerability researchers, and security researchers on offensive cyber tooling and rapid-response capabilities.
• Use AI-assisted development workflows such as Claude Code, Codex, and Opencode to accelerate delivery of emergent mission capabilities.

Requirements

• Production-grade experience building enterprise-grade, distributed web applications with Python, JavaScript, and TypeScript.
• Experience with high-side development environments such as NSANet, MACHINESHOP, C2S, or GHOSTMACHINE, including non-attributed network configurations.
• Knowledge of end-to-end full-stack architecture, modern frontend design, RESTful APIs, relational and non-relational databases, and backend services.
• Experience with DevOps automation, Docker, continuous integration pipelines, and cloud service providers including AWS or C2S.
• Knowledge of Git-based version control, testing frameworks, and agile software engineering practices in collaborative teams.
• TS/SCI clearance with polygraph.
• 12 years of experience and a bachelor's degree in a technical discipline, or 4 additional years of experience in place of the degree.

Nice to have

• Experience or interest in offensive cyber operations, including CNO/CNE, ATPG, TURBINE, or ASGARD; vulnerability research; and software reverse engineering.
• Experience configuring AI-assisted development tools such as Claude Code, Codex, or Opencode through skills, memory, or custom extensions.
• Familiarity with React, Angular, or Vue, as well as Bootstrap and jQuery.
• Knowledge of mobile vulnerability research and Android application architecture.
• Experience with C or C++, gdb, Java Map/Reduce, or GHOSTMACHINE.

Culture & Benefits

• Eight weeks of paid leave, including personal leave, paid holidays, birthday leave, and optional volunteer leave.
• 10% 401(k) matching vested on day one, a company-funded HSA, medical and dental coverage, and company-funded life insurance.
• $5,000 annual training and tuition benefit plus a student loan repayment program.
• Flexible work-life balance, career development, gym reimbursement, monthly lunches, events, and referral and pet adoption programs.