Senior Full Stack Application Developer

Leidos; United States; Hybrid; USD 108,000 - 195,000; Full time

Job summary

Leidos is seeking an experienced Senior Full Stack Application Developer to design, build, and maintain secure full-stack solutions for a DoD contract management tool. The role involves working in a hybrid on-site and remote environment, using modern frameworks, cloud technologies, and secure coding practices.

Required: 8+ years in full stack dev, strong front-end (React/Angular/Vue), back-end (C#, Node.js, .NET Core, Java, Python), DBs (SQL/PostgreSQL/NoSQL), and DoD/federal IT experience.

Qualifications

• 8+ years of full stack development experience.
• Front-end frameworks: React/Angular/Vue.js.
• Back-end: C#/Node.js/.NET Core/Java/Python.
• Experience with SQL/PostgreSQL and NoSQL databases.

Responsibilities

• Develop and maintain scalable, secure full stack applications using modern frameworks and cloud technologies.
• Collaborate with UI/UX designers, QA teams, and stakeholders to define and implement tool capabilities.
• Integrate with DoD financial systems and ensure data compliance with government regulations.
• Build RESTful APIs and microservices for secure data pipelines.
• Apply secure coding practices per DoD STIGs and RMF guidelines.
• Implement RBAC and audit-compliant design for system integrity.
• Participate in Agile sprints, code reviews, testing and releases.
• Support DevSecOps pipeline integration and CI/CD automation.

Skills

React/Angular/Vue.js

Full stack 8+ yrs

C#/Node.js/.NET/Java/Python

SQL/PostgreSQL/NoSQL

DevSecOps/Git/CI-CD

Cloud: AWS/Azure/GovCloud

DoD/federal IT experience

RBAC/API development

Education

Bachelors in CS or related

Master's (nice to have)

Tools

Git

Jenkins

GitLab

REST APIs

Job description

Description

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
• Must be able to

Required Skills & Experience

• Top Secret Clearance (TS/SCI Preferred or Eligible )
• This is a hybrid on-site and remote position.
• 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 outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.

Original Posting:

February 17, 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:

Pay Range $107,900.00 - $195,050.00

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 www.Leidos.com .

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits .

Securing Your Data

Beware of fake employment opportunities using Leidos' name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system - never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [e-mail] . If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission .

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.