Software Developer II

Leidos Holding$69K — $125K *
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree and 4+ years of relevant experience.
  • Significant experience in full-stack development, including software applications and systems.
  • Ability to identify, validate, and assess software requirements.
  • Familiarity with virtual architectures and environments.
  • Experience optimizing and scaling applications for performance and stability.
  • Proficiency in C#, .NET Framework, and ASP.NET MVC.
  • Hands-on experience with Vue.js, JavaScript, Bootstrap, SQL Server, Git, and IIS.

Responsibilities

  • Maintain and enhance web applications for case management and NSS workflows.
  • Collaborate with project managers and development teams on project priorities.
  • Provide on-call support as necessary.
  • Assess and validate software requirements across the organization.
  • Offer architectural design and development support for web applications.
  • Participate in design discussions and recommend appropriate technologies.
  • Redesign existing applications to improve features, stability, and performance.

Benefits

  • Join a dynamic team supporting NASA's critical missions.
  • Opportunity to work independently and lead projects.
  • Access to cutting-edge technologies and development practices.
  • Participate in significant, high-impact software projects.
  • Potential for professional growth within a well-established organization.
Full Job 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.


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 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 Holding

Leidos Holding Careers

Joining Leidos Holding presents an unparalleled opportunity to advance one's career with a leader in innovation and technology. The company offers a plethora of job opportunities aimed at fostering professional growth and development in a diverse and inclusive environment.

Explore Career Opportunities

Leidos Holding is actively seeking skilled professionals who are passionate about leveraging their expertise to drive innovation and leadership in their fields. With a variety of open positions, Leidos Holding provides a platform for individuals to challenge themselves in a dynamic work environment.

Innovation and Professional Growth

At Leidos Holding, innovation is at the core of everything they do. Employees are encouraged to think creatively and push boundaries. The company supports this drive for innovation through comprehensive professional development and diversity training programs that are designed to enhance skills and foster leadership.

Commitment to Diversity and Inclusion

Leidos Holding is committed to creating a workplace where diversity is not only recognized but celebrated. With a culture that values and promotes diversity, Leidos Holding ensures that all team members have the opportunity to contribute, learn, and grow.

Internship Programs

For those starting their career, Leidos Holding offers internship programs that provide a robust foundation in the industry. Internships are a great way to develop essential skills, gain valuable work experience, and build professional networks.

Benefits and Culture

Employees at Leidos Holding enjoy a range of benefits designed to support their professional and personal lives. The company culture is built on a foundation of respect and integrity, providing a supportive and collaborative environment where every team member is valued.

Join the Team

Leidos Holding is hiring! Explore job opportunities that match your skills and interests. Leidos Holding looks for driven, curious, and innovative individuals to join their team. Positions are available across various disciplines and experience levels.

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Prepare for Your Interview

To prepare for an interview at Leidos Holding, candidates should familiarize themselves with the company's missions and values, update their resumes, and be ready to discuss how their background and skills align with the position they are applying for.

Networking and Career Advancement

Leidos Holding encourages its employees to engage in networking within the company to discover new opportunities for career advancement. The leadership team at Leidos Holding is dedicated to supporting employees in their career paths with ample opportunities for networking and growth.

Explore Leidos Holding Jobs and Careers

Discover the exciting career opportunities at Leidos Holding today. With a commitment to employee growth, innovation, and diversity, Leidos Holding is the perfect place to advance your career. Check out the latest job listings and find your perfect fit at Leidos Holding.

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