Senior Full Stack Developer - Combat Coder

Leidos • Marysville, CA

1d

About The Position

Leidos is seeking a Senior Combat Coder for its Sentinel program, supporting the United States Air Force in geographically distributed intelligence operations. The role involves working directly with customers and an embedded user base to build, modify, and integrate full-stack applications. Contributions move directly to production systems and receive immediate feedback as part of a small engineering team focused on mission delivery.

The position is suited to an adaptable developer who can build and integrate mission-critical systems in challenging, disconnected, and resource-constrained environments. Work includes using Python, Apache NiFi, and other modern tools, often without reliable connectivity or cloud dependencies. The role involves field-oriented problem solving under pressure, rapid delivery, and supporting critical missions.

Requirements

• Bachelor’s degree with 12 or more years of experience, or a master’s degree with 10 or more years of experience; additional experience may be considered in lieu of a degree.
• U.S. citizenship and an active TS/SCI clearance, with the ability to maintain the clearance during employment with Leidos.
• Proven full-stack development experience.
• Strong Python skills and experience with Apache NiFi or similar dataflow or integration tools.
• Ability to work in disconnected or degraded network environments without cloud dependencies.
• Solid understanding of APIs, data pipelines, and system integration patterns.
• Creative problem-solving skills for complex, ambiguous challenges.
• Ability to work independently and deliver under tight deadlines.
• Strong interpersonal and communication skills.
• Understanding of source control tools such as GitLab.

Nice To Haves

• Experience using JEMA and ARC GIS.
• Experience with DevOps in air-gapped environments.
• Background in secure coding practices and cyber-resilient architectures.
• Prior work in mission-critical, defense, or field operations.

Responsibilities

• Integrate systems and data flows using Python, NiFi, and other integration frameworks.
• Engineer resilient solutions for austere, bandwidth-limited, or air-gapped conditions.
• Collaborate with cross-functional teams to rapidly prototype and deliver mission-critical capabilities.
• Troubleshoot and optimize code and workflows in real time, often with incomplete information.
• Document and harden solutions for long-term maintainability in the field.
• Engage directly with customers to build and modify full-stack applications.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior