Software Developer II

Leidos; Huntsville (AL); On-site; USD 70,000 - 126,000; Full time

Job summary

Leidos is seeking a Software Developer to support NASA’s NSS team. The role covers full-stack development, maintaining and building web portals for case management and NSS team sites that support security posture across networks and endpoints.

The candidate will work with project managers and security leads, perform on-call duties, and help design scalable, high-performing web applications using C#, .NET, Vue.js, SQL Server, and related technologies.

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.

Responsibilities

• 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, javascript, 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.

Skills

Full-stack development

C#

Vue.js

JavaScript

Bootstrap

SQL Server

Git

IIS

ASP.NET MVC

Education

Bachelor’s degree

Tools

Microsoft Visual Studio

SQL Server Management Studio

Git version control

IIS

Java web tools

Job description

Description

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.

Preferred Qualifications:

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.

Clearance Requirements:

• 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, 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 $69,550.00 - $125,725.00

The Leidos pay range for this job level is a general guideline onlyand 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.

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

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.