Leidos is seeking a Software Developer in support of NASA’s National Security Systems team. This role is responsible for full-stack development, maintaining and developing web portals supporting case management and team site portals that support the security posture of networks, servers, endpoints, and other systems. This position requires the ability to work independently with general direction. Join us at AEGIS where the sky is NOT the limit!
Primary Responsibilities:The Software Developer will:
The full-stack web developer will maintain and develop existing websites and applications supporting case management and NSS Team site workflows.
This includes assessments and consultations on the design of C#, vue.js, javescript, bootstrap, .net framework, .net 10.0, Sql Server, Sql Scripting, Java web tools, Microsoft Visual Studio web projects, applications, server management, and development of new applications.
Work closely with the project manager, development team, information system security manager; however, the Sponsor project manager will manage the priorities.
Provide occasional on-call duty as needed.
Assess and validate software requirements across the organization.
Provide architectural design and web development support to meet web application requirements.
Participate in software design discussions and recommend implementation of the tools, technologies and techniques.
Redesign the existing Web, Software applications to add new features, optimize, scale or improve stability and performance.
Provide O&M and content management support for Sponsor’s Web, software sites.
Basic Qualifications:
Bachelor’s degree and 4+ years of prior relevant experience.
Demonstrated full-stack development experience, including developing, deploying, and maintaining software applications and systems.
Proven ability to identify and validate requirements for software applications and websites.
Working knowledge of virtual architectures and environments.
Demonstrated ability to add new features, optimize and scale applications, and improve application and web performance and stability.
Proficiency with C#, .NET Framework, .NET, and ASP.NET MVC.
Experience with Vue.js, JavaScript, Bootstrap, SQL Server, SQL scripting, Java web tools, Git version control, Microsoft Visual Studio web projects, IIS, application and server management, and new application development.
Ideal candidates possess a deep understanding of the following areas:
Software application development.
Web development and IIS.
Programming with HTML.
Developing and administering Windows based applications.
Experience with customer applications at this location, to include the case management system and work process management systems.
UI/UX expertise, CSS frameworks (Material, Bootstrap, etc.)
Expert proficiency with software design patterns and best practices.
Self-starter, works under limited guidance and well with ambiguity.
Strong critical thinking skills, test-driven development, object-oriented solid development foundation.
U.S. Citizenship is required.
Must possess an active Secret clearance; Top Secret clearance preferred.
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:August 31, 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.
Skills Required
- Bachelor's degree
- 4+ years of prior relevant experience
- Full-stack development experience, including developing, deploying, and maintaining software applications and systems
- Ability to identify and validate requirements for software applications and websites
- Working knowledge of virtual architectures and environments
- Ability to add features, optimize and scale applications, and improve application and web performance and stability
- Proficiency with C#, .NET Framework, .NET, and ASP.NET MVC
- Experience with Vue.js, JavaScript, Bootstrap, SQL Server, SQL scripting, Java web tools, Git, Microsoft Visual Studio web projects, IIS, application and server management, and new application development
- Software application development experience
- Web development and IIS experience
- HTML programming experience
- Windows-based application development and administration experience
- Experience with customer applications at the location, including case management and work process management systems
- UI/UX expertise and experience with CSS frameworks such as Material or Bootstrap
- Expert proficiency with software design patterns and best practices
- Self-starter able to work under limited guidance and ambiguity
- Strong critical thinking skills, test-driven development, and object-oriented development foundation
- U.S. citizenship
- Active Secret security clearance
- Top Secret security clearance
Leidos Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Leidos and has not been reviewed or approved by Leidos.
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Healthcare Strength — Healthcare coverage is described as comprehensive, with multiple plan options, low office-visit copays in some plans, and access to mental health and wellness support tools. The availability of HSA/FSA options and employer contributions is positioned as a meaningful part of the total package.
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Retirement Support — Retirement benefits are framed as a strong component of total rewards, highlighted by a 401(k) match and immediate vesting in the standard package. The Employee Stock Purchase Plan is also presented as an additional long-term wealth-building feature.
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Wellbeing & Lifestyle Benefits — Wellbeing and lifestyle supports extend beyond core insurance, including wellness programs, fitness-related stipends, and assistance resources. Work flexibility and related perks are also included as part of the broader rewards experience.
Leidos Insights
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.
