Jr Full Stack Software Developer

Description The Leidos Digital Modernization NISC IV team is looking to hire a Junior Full-Stack Software Developer, with a strong background in modern web technologies and full-stack development, to help develop the CARES web application. The ideal candidate will be experienced in building responsive front-end applications (Angular, TypeScript) and scalable back-end services (C#, .NET Core). Preferred candidates will have experience applying AI-assisted development tools (GitHub Copilot, Claude Code) and bring experience developing or integrating AI into web-based applications. Applicant must have the ability to obtain a Public Trust Security Clearance Suitability (To be eligible for Public Trust Security Clearance, one must be either a U.S. Citizen OR a U.S. Permanent Resident/Green Card holder who has resided in the U.S.A for the past 3 years.) All new hires must pass a drug test prior to starting with Leidos. Primary Responsibilities

• Develop, enhance, and maintain web applications using C# and.NET Core (Web API).
• Implement responsive frontend features using Angular and TypeScript.
• Write and maintain SQL queries and schema changes for relational databases (Postgres).
• Implement unit and integration tests.
• Collaborate in Agile teams: participate in sprint planning, stand-ups, and retrospectives.
• Troubleshoot, debug, and resolve defects in development, QA, and other environments.
• Produce and maintain clear technical documentation.
• Follow secure coding practices.

Required Qualifications

• Bachelor’s degree in Computer Science, Engineering, or related field
• 0–3 years of professional software development experience.
• Proficiency in C# and experience with .NET (preferably .NET Core / .NET 6+).
• Experience building single-page applications with Angular and TypeScript.
• Basic experience with relational databases (SQL Server / PostgreSQL / MySQL) and writing SQL.
• Familiarity with RESTful APIs, JSON, and web fundamentals (HTTP, XML).
• Working knowledge of Git, Agile development practices, and CI/CD concepts.
• Strong communication skills and ability to work in a team.
• Must have the ability to obtain a Public Trust suitability.

Preferred Qualifications

• Experience with Entity Framework Core and LINQ.
• Familiarity with ASP.NET Core Web API, middleware, and authentication (OAuth/OpenID Connect).
• Experience with cloud platforms (AWS preferred).
• Hands-on experience with CI/CD tools (Jenkins, Bitbucket Pipelines, GitHub Actions), and static analysis (SonarQube).
• Containerization experience (Docker) and basic Kubernetes knowledge.
• Experience integrating AI services or using AI-assisted coding (e.g., GitHub Copilot) or implementing LLM/AI APIs in web applications.
• Familiarity with Microservice architecture patterns and distributed system fundamentals.

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 March 19, 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 $57,850.00 - $104,575.00 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. #Remote