Senior Software Engineer

Leidos is seeking Senior Software Engineers in Gaithersburg, MD for its Air Traffic Management projects to include Federal Aviation Administration and international clients. Successful candidates will be responsible with all phases of software development ranging from: design and coding to integrating and reviewing software components, from testing and bug fixing to documentation, building and presenting demos to stakeholders.

If this sounds like the kind of environment where you can thrive, keep reading!

Areas of Responsibility:

• Analyze system requirements and create detailed software requirements specifications for implementation in various software development phases
• Developing software in Java/J2EE in an agile environment
• Conduct testing and validation of software components, including unit testing and integration testing, to ensure reliability and functionality
• Participate in design reviews, code reviews, and other team activities to provide technical expertise and ensure alignment with project goals
• Stay current with industry trends and advancements, contributing insights and recommendations for continuous improvement
• Support troubleshooting efforts and provide technical assistance to resolve software-related issues during development and post-production phases
• Document software designs, specifications, and test procedures to maintain comprehensive records and facilitate knowledge sharing within the team
• Collaborate with multidisciplinary engineering teams to implement software solutions that meet system specifications and performance criteria

Required Qualifications:

• Bachelor's degree in Computer Engineering/Computer Science or Electronics & Electrical /Telecommunications Engineering with 10+ years experience OR a Master's degree in Computer Engineering/Computer Science or Electronics & Electrical /Telecommunications Engineering with 8+ years experience
• Ability to obtain and maintain a public trust security clearance
• U.S. Citizen
• Object Oriented Programming
• C and C++ programming languages
• Real-Time Programming on High Availability Systems
• Multi-threaded programming
• Low Level Operating Systems (OS) Customization (RedHat), Hypervisors, and VMs
• CAS / Hardware Integration
• Low level communication software (TCP-IP, UDP, SCTP)
• System Maintenance Concepts

Preferred Qualifications:

• Ada programming language
• Knowledge of AI/ML tools and concepts in software development
• Experience with the Federal Aviation Administration's En-Route Automation Modernization (ERAM)
• Knowledge of XML

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:
September 19, 2025

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 $126,100.00 - $227,950.00

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.