Lead Software Developer

Job Description

Software Developer

UK NASR PDT Evolution Program

Leidos is seeking a Software Developer 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.

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 $87,100.00 - $157,450.00

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.