Senior Real-Time Systems Engineer – Hybrid

Leidos; Gaithersburg (MD); Hybrid; USD 117,000 - 195,000; Full time

Job summary

Leidos is seeking a Software Engineer based in Gaithersburg, MD (also options in Eagan, MN or Egg Harbor, NJ) to join the UK NASR PDT program, delivering real-time, high-availability, safety-critical software for air traffic modernization.

You will design, develop, test, and maintain software for mission-critical systems, mentor junior developers, participate in Agile ceremonies, and collaborate across teams to ensure reliable, scalable solutions.

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.

Responsibilities

• 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.

Skills

C/C++

Real-time systems

Linux (Red Hat)

Multi-threading

Hardware integration

TCP/UDP/SCTP

Source control

Software development best practices

Public trust clearance

US Citizenship

Education

Bachelor’s degree in Computer Science or related

Master’s degree with 2–6 years experience

Tools

Virtual machines

Hypervisors

Job description

Leidos is seeking a Software Engineer based in Gaithersburg, MD (also options in Eagan, MN or Egg Harbor, NJ) to join the UK NASR PDT program, delivering real-time, high-availability, safety-critical software for air traffic modernization.

You will design, develop, test, and maintain software for mission-critical systems, mentor junior developers, participate in Agile ceremonies, and collaborate across teams to ensure reliable, scalable solutions.