Principal Software Engineer - Drive National Security Innovation at Leidos

Leidos is seeking a Principal Software Engineer to join our National Security Sector's Cyber & Analytics Business Area in Aurora, CO. This high-stakes role offers a $25,000 sign-on bonus and supports mission-critical programs in Security Engineering, Computer Network Operations, SIGINT, and Cryptographic Key Management. With 20+ years of experience, you'll architect full-stack solutions that disrupt the status quo and safeguard the nation.

Primary Responsibilities

• Design and develop secure, scalable software applications for operational environments
• Integrate cutting-edge software into dynamic, evolving systems
• Analyze user requirements to deliver efficient, high-performance solutions
• Debug, optimize, and enhance software reliability under rigorous standards
• Implement advanced algorithms powering national security missions
• Maintain comprehensive documentation and technical reports
• Thrive in Agile Scrum teams delivering rapid iterations

Basic Qualifications

• Bachelor's in Computer Science (or 4+ years equivalent experience)
• 20+ years software engineering in comparable programs
• Front-end expertise (React, Angular, Vue)
• Python proficiency
• Active TS/SCI with Polygraph

Desired Skills

• React, Kibana, Elastic Search, Jupyter Notebook, Google Go, JavaScript

Exceptional Benefits & Compensation

Pay range: $154,050 - $278,475. Enjoy competitive benefits including 401K with 6% match, flexible schedules, education support, and more. Leidos outpaces the competition—join us to make a real impact.

This full-time position demands proven leadership in secure software development for defense missions. Apply now and elevate your career.