Software Engineer

Description Software Engineer UK NASR PDT Evolution Program Leidos is seeking a Software Engineer to be based in Gaithersburg, MD; Eagan, MN; or Egg Harbor, NJ. This position will support the United Kingdom National Airspace System Replacement Product Delivery Team - UK NASR PDT. This effort delivers enhanced capabilities to replace and modernize the current operational system supporting UK air traffic services. You will join a dynamic engineering team responsible for building and sustaining real-time, high-availability, safety-critical systems that directly support national airspace operations. This is a U.S.-based position that offers a balanced hybrid schedule between 2-3 days in the office per week. What You’ll Do Design, develop, test, and maintain software for real-time, high-availability systemsLead software development activities independently and as part of a collaborative engineering teamAnalyze complex system requirements and translate them into efficient, maintainable software designsApply sound software engineering principles to ensure code is reliable, fault tolerant, reusable, and maintainableLead and mentor junior developers, influencing technical direction and development processesParticipate in Agile ceremonies including daily stand-ups, release planning, and sprint reviewsDevelop, tune, document, and deploy automation scripts across development, test, and production environmentsPromote code reuse, cross-program collaboration, and sustainable development practicesSupport system integration activities, including hardware and low-level communications interfaces Required Qualifications Bachelor’s degree in Computer Science or related field with 2+ years of relevant experienceOR Master’s degree with relevant experienceAbility to obtain and maintain a Public Trust clearanceStrong object-oriented programming experienceProficiency in C and/or C++Experience developing real-time, multi-threaded, high-availability systemsExperience with Linux environments (Red Hat), virtual machines, and hypervisorsExperience with low-level communications protocols (TCP/IP, UDP, SCTP)Experience with hardware or complex system integrationFamiliarity with system maintenance and lifecycle conceptsExperience with source control and configuration management toolsStrong understanding of modern software development principles and best practicesAbility to plan and prioritize work effectively in a fast-paced environmentStrong verbal and written communication skillsDemonstrated ability to work independently and collaborativelyUS Citizenship Required Preferred Qualifications Experience with AdaExperience with test automation frameworksFamiliarity with AI coding tools and agents (Codex, Claude, or similar)Experience with Agentic and AI-assisted development workflows, including vibe codingFamiliarity with AI-enabled CI/CD, testing, code review, and DevSecOpsUnderstanding of AI-generated code validation, security, and responsible use Why Leidos You’ll contribute to software systems where reliability, performance, and precision are essential. This is an opportunity to work on mission-critical infrastructure supporting national airspace operations — collaborating with experienced engineers to modernize complex, real-world systems. If you are motivated by solving technically challenging problems in regulated, operational environments, we encourage you to apply. ATMC 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 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 $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 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.