Senior Software Developer

We are seeking a Senior Software Developer who will be a member of a dynamic team Air Traffic Management program - SkyLine-X™ SkyLine-X™ provides an array of advanced air traffic management capabilities to improve aircraft safety, performance, and efficiency across the world’s airspace. Primary Responsibilities: Lead the design, development, and maintenance of software components and subsystems, operating as a senior technical contributor within a SW team Drive technical planning, estimation, and architectural discussions, influencing design decisions and implementation strategies Analyze system and subsystem requirements and develop robust, scalable software designs aligned with overall system architecture Lead implementation of complex features and ensure alignment with performance, reliability, safety, and maintainability requirements Define and implement effective use of AI-assisted development tools (e.g., Roo Code, Claude, ChatGPT, or similar) across the team to improve productivity and code quality Establish guidelines and guardrails for responsible AI usage, including validation standards, traceability, security considerations, and compliance with program requirements Exercise deep technical judgment in evaluating AI-generated outputs, identifying subtle defects, system-level impacts, performance tradeoffs, and potential failure modes Drive adoption of standardized prompting strategies, reusable workflows, and AI-assisted development patterns across the team or program Lead and perform code reviews, setting quality expectations for both human- and AI-generated code Troubleshoot and resolve complex, system-level software issues, supporting integration, verification, and validation activities Mentor junior and mid-level developers, including coaching on effective and responsible use of AI-assisted development tools Contribute to continuous improvement of development processes, tooling, and engineering excellence, including integration of AI capabilities into CI/CD and testing workflows Basic Qualifications: Must be able to obtain and maintain a Public Trust security clearance (US Citizenship required) Bachelor’s degree in computer science or a related field and a minimum of 8 years of prior relevant experience, or a master’s degree and a minimum of 6 years of prior relevant experience Strong proficiency in programming languages such as C++, Python, or Qt, with significant experience developing, integrating, and maintaining production-quality systems Demonstrated experience applying AI-assisted software development tools (e.g., GitHub Copilot, ChatGPT, Roo Code, or similar) in professional environments to improve team productivity and software quality Advanced ability to evaluate, validate, and govern AI-generated code, including identifying complex logical errors, edge cases, performance concerns, and security vulnerabilities Strong understanding of software architecture, design patterns, and system-level tradeoffs Experience leading code reviews and establishing or enforcing team development standards Ability to work independently on complex problems and provide technical leadership within a team Strong communication skills, with the ability to clearly articulate technical decisions and mentor other engineers Demonstrated experience improving team workflows, development processes, and tool chains, including adoption of AI-assisted techniques Preferred Qualifications: Experience defining or governing AI-assisted development practices at the team, program, or organizational level Experience integrating AI tools into CI/CD pipelines, automated testing frameworks, or secure development environments Familiarity with secure coding practices and validating AI-generated code in regulated, safety-critical, or mission-critical systems Experience contributing to software architecture decisions or serving as a technical lead on a project or subsystem Proven experience mentoring developers across multiple experience levels 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: June 8, 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 $107,900.00 - $195,050.00 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. Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here. Securing Your Data Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to View email address on click.appcast.io. Commitment and Diversity All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.