Senior Full Stack Application Developer

Leidos LLC; Tampa (FL); On-site; USD 108,000 - 195,000; Full time

Job summary

Leidos in Tampa, FL is seeking an experienced Senior Full Stack Application Developer to design, build, and maintain secure, scalable solutions for a DoD-focused contract management tool.

The role requires on-site support in Tampa with some remote capability, active Top Secret clearance (TS/SCI preferred) and collaboration with UI/UX, QA, and mission stakeholders to deliver robust financial tool capabilities and compliant data pipelines.

Qualifications

• 8+ years of full stack development experience.
• Advanced experience with front-end frameworks (React, Angular, or Vue.js).
• Back-end proficiency 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.
• Working knowledge of cloud platforms (AWS, Azure, or GovCloud).
• Advanced understanding of application security, RBAC, and API development.
• Experience working within DoD or federal IT environments.

Responsibilities

• Develop and maintain scalable, secure full stack applications.
• 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.

Skills

Full stack development

Front-end frameworks

Back-end languages

SQL/NoSQL databases

DevSecOps / CI-CD

Cloud platforms

DoD/federal IT experience

RBAC & API security

Security clearances

Education

Bachelor degree

Tools

Git

GitLab

Jenkins

Job description

Leidos is seeking an experienced Senior Full Stack Application Developer located in Tampa, FL.

POSITION SUMMARY:

This position will 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. This opportunity requires local, on-site support with some remote capability.

CLEARANCE REQUIREMENTS:

Must have an active Top Secret security clearance. TS/SCI preferred; US Citizenship required.

PRIMARY 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

BASIC REQUIREMENTS: Bachelor Degree and 8 years of experience; additional years of experience may be substituted in lieu of a degree.

• 8+ years of full stack development experience supporting web-based applications.
• Advanced 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).
• Advanced understanding of application security, RBAC, and API development.
• Experience working within DoD or federal IT environments.

PREFERRED QUALIFICATIONS:

• 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.

If you're looking for comfort, keep scrolling. 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:

September 2, 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.

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 $17.2 billion for the fiscal year ended January 2, 2026. 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.

• competitive compensation
• Health and Wellness programs
• Income Protection
• Paid Leave
• Retirement

More details are available here.

Securing Your Data

Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity

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.