Software Engineer 3

Looking for an opportunity to make an impact?

At Leidos, we're redefining what's possible through innovation, collaboration, and a steadfast commitment to our customers' success. Our people are our greatest asset - diverse, talented professionals empowered to drive change, strengthen communities, and operate with integrity and purpose. Guided by our Mission, Vision, and Values, we deliver solutions that make a measurable difference every day.

If you're looking for a dynamic environment where you can excel and grow, we invite you to learn more.

Are you passionate about leveraging cutting-edge Artificial Intelligence (AI) to revolutionize one of the world's most critical infrastructures: Air Traffic Control (ATC)? The National Airspace System (NAS) is constantly pushing the boundaries of capacity and safety, and modernizing our core systems is essential to meet the demands of future air travel.

Leidos is seeking a talented Software Engineer (Level 3) to join our team in Egg Harbor Township, NJ, or Gaithersburg, MD, dedicated to developing the next generation of ATC expansion software. In this role, you won't just be maintaining legacy systems; you will be directly involved in the development of high-reliability, performance-critical systems that utilize machine learning models to enhance operational decision-making. This includes creating solutions for advanced trajectory prediction, optimized traffic flow management, conflict detection, and controller workload balancing.

You will be instrumental in designing and implementing these mission-critical systems, ensuring the seamless and safe integration of new, intelligent capabilities into the live operational environment. If you thrive on complex technical challenges, are proficient in core development languages like C++ and Java, and want your work to have a direct impact on the safety and efficiency of global air travel, this is the opportunity for you.

If you're ready for a challenging and rewarding opportunity that pushes the boundaries of innovation in aviation technology, we'd love to connect with you.

Your most meaningful work is ahead!

The Mission

For more than five decades, Leidos has been a trusted partner in delivering advanced Air Traffic Management (ATM) systems for Air Navigation Service Providers (ANSPs) across the globe. Our solutions keep customers ahead of accelerating aviation demands by integrating proven, globally deployed technologies with next-generation capabilities co-developed alongside our ANSP and technology partners.

From tower and terminal systems to en route, oceanic, and comprehensive flow control solutions, we're helping define the future of safe and efficient airspace management. Explore more about our aviation innovations here!

Join a team driven by mission and impact - share your resume today and take the next step in your career with Leidos.

The Challenge:

• Design, develop, and test software components for our ATC expansion platform, with a specific focus on integrating AI/Machine Learning (ML) capabilities.
• Work closely with data scientists, subject matter experts, and other engineers to translate complex operational requirements into robust software solutions.
• Ensure the high performance, scalability, and reliability of mission-critical systems.
• Participate in the full software development lifecycle using Agile methodologies, including planning, design, coding, code review, testing, and deployment.
• Troubleshoot and resolve complex software defects and system issues.
• Contribute to the continuous improvement of development processes and system architecture.

What Sets You Apart:

• Bachelor's degree in Computer Science, Systems Engineering, or related discipline, and at least 5 years of relevant experience (mid-to-senior level).
• Bachelor's degree in Computer Science or a related field and at least 5 years of relevant experience (we are targeting a mid-to-senior level engineer for this specialized role).
• Strong knowledge of programming languages, development methodologies, and best practices.
• Proficiency with Linux operating systems and command line tools.
• Ability to plan and prioritize personal tasking and communicate effectively both verbally and in writing.
• Independent thinker capable of high-quality work both individually and within a collaborative team environment.
• Proficiency in C++ (Qt knowledge desirable) and Java (SpringBoot knowledge desirable).
• Strong problem-solving and analytical skills.
• Ability to perform rapid software development.

You may also have:

• Experience using AI/ML in the software development process, including model deployment, MLOps, or working with ML frameworks.
• Experience with Test Automation frameworks and tools.
• Experience with Containerized development environments such as Docker or Podman.
• Experience with Event Driven Architecture, Microservices, Event Brokers, RESTful APIs, and JSON.
• Experience with web software development with JavaScript, HTML, and React Framework.
• Experienced in Agile development methodologies and processes.
• Experience in Air Traffic Control or Management software domain.

At Leidos, we don't want someone who "fits the mold"-we want someone who melts it down and builds something better. This is a role for the restless, the over-caffeinated, the ones who ask, "what's next?" before the dust settles on "what's now."

If you're already scheming step 20 while everyone else is still debating step 2... good. You'll fit right in.

Original Posting:
January 12, 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.