We’re looking for an experienced Senior Full Stack Applicatoin 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 DevSecOps 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/PostgreSQL and NoSQL databases
- Knowledge of DevSecOps, Git version control, and CI/CD tools (GitLab, Jenkins, etc.)
- Working knowledge of cloud platforms (AWS, Azure, or GovCloud)
- 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.
Original Posting:January 8, 2026For 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.
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.
Top Skills
What We Do
We Are Leidos
For 50 years we have been tackling some of the biggest problems that face our nation and our world.
OUR MISSION
Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020.
Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®.
Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos.
Your most important work is ahead.
