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.
Location
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 systems
- Lead software development activities independently and as part of a collaborative engineering team
- Analyze complex system requirements and translate them into efficient, maintainable software designs
- Apply sound software engineering principles to ensure code is reliable, fault tolerant, reusable, and maintainable
- Lead and mentor junior developers, influencing technical direction and development processes
- Participate in Agile ceremonies including daily stand-ups, release planning, and sprint reviews
- Develop, tune, document, and deploy automation scripts across development, test, and production environments
- Promote code reuse, cross-program collaboration, and sustainable development practices
- Support system integration activities, including hardware and low-level communications interfaces
Required Qualifications
- Bachelor’s degree in Computer Science or related field with 4–8 years of relevant experience
- OR Master’s degree with 2–6 years of relevant experience
- Ability to obtain and maintain a Public Trust clearance
- Strong object-oriented programming experience
- Proficiency in C and/or C++
- Experience developing real-time, multi-threaded, high-availability systems
- Experience with Linux environments (Red Hat), virtual machines, and hypervisors
- Experience with low-level communications protocols (TCP/IP, UDP, SCTP)
- Experience with hardware or complex system integration
- Familiarity with system maintenance and lifecycle concepts
- Experience with source control and configuration management tools
- Strong understanding of modern software development principles and best practices
- Ability to plan and prioritize work effectively in a fast-paced environment
- Strong verbal and written communication skills
- Demonstrated ability to work independently and collaboratively
- US Citizenship Required
Preferred Qualifications
- Experience with Ada
- Experience with test automation frameworks
- Familiarity with AI/ML tools applied within software development workflows
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.
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:February 18, 2026For 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.
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.
Top Skills
What We Do
We Are Leidos
For 50 years we have been tackling some of the biggest problems that face our nation and our world.
OUR MISSION
Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020.
Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®.
Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos.
Your most important work is ahead.
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