Senior Software Developer

Description

Senior full-stack engineer to lead design, implementation, and sustainment of mission-critical web applications for defense customers. You will own architecture and delivery across .NET backends, Vue.js front ends, and SQL Server data layers, and shepherd solutions through secure SDLC, security compliance, and fielded deployments. This role requires technical leadership, systems thinking, and proven experience delivering reliable software in controlled or constrained environments.

This position can be worked remote, but strong preference will be given to candidates local to Newport News, VA.

Key responsibilities

• Design and implement scalable, secure backend services using C# (.NET Framework / .NET Core / ASP.NET) that satisfy performance, reliability, and accreditation requirements.
• Build and document RESTful Web APIs, leveraging OpenAPI / Swagger standards for discoverability and integration.
• Build front-end architecture and delivery using Vue.js / Nuxt, TypeScript, tailwind, component design, and modern state management patterns.
• Design relational database schemas, stored procedures, and queries with a focus on performance and maintainability.
• Drive API design and integrations, message patterns, and secure data exchanges.
• Own technical documentation, security artifacts, and deployment packages required for accreditation and fielding.
• Mentor and lead cross-functional teams; review code, set standards, and enforce best practices.
• Establish and maintain automated unit tests (e.g., NUnit) and contribute to overall test coverage strategy.
• Participate in incident postmortems and provide rapid response support for production and field issues.
• Coordinate with product, QA, and systems engineering to meet contract milestones, and audit requirements.

Required qualifications

Preferred qualifications

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 : November 13, 2025

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 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 .

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 LeidosCareersFraud@leidos.com .

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.

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