Senior Full Stack Application Developer

We’re looking for an experienced Senior Full Stack Application Developer to support a Contract Management Tool, a mission‑critical platform designed to modernize financial planning, execution tracking, and audit readiness for the Department of Defense (DoD). This developer will be responsible for designing, building, and maintaining secure full‑stack solutions that support program transparency, fiscal responsibility, and operational agility.

Key Responsibilities

• Develop and maintain scalable, secure full stack applications using modern frameworks and cloud technologies
• Collaborate with UI/UX designers, QA teams, and mission stakeholders to define, develop, and implement financial tool capabilities
• Integrate with DoD financial management systems and ensure data compliance with government regulations
• Build RESTful APIs and microservices that ensure clean, secure data pipelines
• Apply secure coding practices in accordance with DoD STIGs and RMF guidelines
• Implement role‑based access controls and maintain system integrity through audit‑compliant design
• Participate in Agile sprint cycles, code reviews, testing, and release processes
• Support Dev Sec Ops  pipeline integration and CI/CD automation

Required Skills & Experience

• Top Secret Clearance (TS/SCI Preferred or Eligible)
• 8+ years of full stack development experience supporting web‑based applications
• Strong experience with front‑end frameworks (React, Angular, or Vue.js)
• Back‑end expertise with C#, Node.js, .NET Core, Java, or Python
• Experience with SQL/Postgre
  
  SQL and No
  
  SQL databases
• Knowledge of Dev Sec Ops , Git version control, and CI/CD tools (Git Lab, Jenkins, etc.)
• Working knowledge of cloud platforms (AWS, Azure, or Gov Cloud)
• Strong understanding of application security, RBAC, and API development
• Experience working within DoD or federal IT environments

Nice to Have

• Bachelor’s or Master’s degree in Computer Science, Information Systems, or related field
• Familiarity with DoD budgeting processes (e.g., POM, O&M, RDT&E)
• Experience developing financial or audit‑traceable platforms
• Understanding of STIGs, ACAS scanning, RMF documentation, and system hardening
• Prior work on software tools used for budget forecasting, contract execution, or manpower allocation

At Leidos, we don’t want someone who "fits the mold"—we want someone who melts it down and builds something better. This is a role for the restless, the over‑caffeinated, the ones who ask, “what’s next?” before the dust settles on “what’s now.”

If you’re already scheming step 20 while everyone else is still debating step 2… good. You’ll fit right in.

January 8, 2026

For U.S. Positions:
While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range $92,300.00 - $

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit

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