Join Leidos as a Senior Full Stack Application Developer

Leidos seeks an experienced Senior Full Stack Application Developer to support our mission-critical Contract Management Tool for the Department of Defense (DoD). This platform modernizes financial planning, execution tracking, and audit readiness, demanding secure, scalable solutions that ensure 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 for budget forecasting, contract execution, or manpower allocation.

At Leidos, we seek innovators who challenge the status quo. If you're restless, forward-thinking, and thrive in high-stakes DoD environments, apply today. Pay range: $92,300 - $166,850 USD, based on experience and qualifications. U.S. citizenship and clearance required. Position posted January 8, 2026.