Sr. Software Engineer

You will serve as a senior technical lead across the full software lifecycle-architecture updates, rapid prototyping, secure communications development, cloud integration, remote access solutions, lowlatency performance engineering, and deployment support in contested environments., * Software architecture leadership - modify and evolve CUAS tactical software baselines.

• Rapid prototyping - build and demo proofofconcept capabilities for government evaluators.
• Secure communications development - implement encrypted, authenticated tactical data transmission.
• Remote access engineering - design zerotrust gateways and encrypted remote sessions.
• Cloud integration - develop lowlatency data transfer to Armyauthorized cloud environments.
• Lowlatency optimization - profile and tune software for nearrealtime performance.
• Commandandcontrol tools - build centralized and distributed management capabilities.
• Integration & testing - validate prototypes in simulated contested environments.
• Cybersecurity support - contribute to secure coding, software assurance, and ATO documentation.

• Masters degree in CS, Software Engineering, EE, or related field preferred. Bachelor’s degree in CS, Software Engineering, EE, or related field; 15+ years relevant experience is required.
• Seniorlevel development expertise in C, C++, Python, or Java for tactical/embedded systems.
• Current Secret security clearance with the ability to obtain a Top Secret security clearance.
• Proven leadership in prototype development and iterative buildtest cycles.
• Experience designing/modifying complex tactical or networked software architectures.
• Handson experience with secure communications, encryption, MFA, and access control.
• Expertise in VPN/zerotrust remote access, secure gateways, and encrypted sessions.
• Demonstrated ability to engineer lowlatency, jitteroptimized software.
• Experience developing software for DIL (degraded/intermittent/limited) environments.
• Knowledge of DoD cybersecurity, secure coding, and RMF/ATO processes.
• Strong technical writing and ability to brief government stakeholders.

Preferred Qualifications

• Experience with CUAS, SHORAD, LIDS, or related Army airdefense programs.
• Background modifying fielded tactical defense software.
• Experience with edge/cloud architectures in contested environments.
• Participation in rapid capability demos or soldier touchpoints.
• Familiarity with DoD crypto standards, DevSecOps, or containerized environments.
• Prior DoD technical lead experience.
• AWS/Azure GovCloud certifications.

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 9, 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 $154,050.00 - $278,475.00

The Leidos pay range for this job level is a general guideline onlyand 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., 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 at www.leidos.com/careers/pay-benefits.

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 $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.