Mid-Level Defensive Cyber Software Developer

Job Overview

Leidos has a new and exciting opportunity for a Mid-Level Defensive Cyber Software Developer in our National Security Sector's (NSS) Cyber & Analytics Business Area (CABA). Our talented team is at the forefront of Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more.

Join us and make a difference in National Security!

The Mid-Level Defensive Cyber Software Developer will work with a diverse, highly skilled team to develop unique solutions for Cyber, EW, and PNT threats against US weapon systems. Our products are responsible for alerting our varied array of customers of potential cyber and EW attacks by creative Adversaries highly skilled h that problem set in mind, our solutions need to be developed by equally creative minds that enjoy digging, researching, programming, questioning, and generally learning all they can to anticipate in every way possible.

Initially, we are seeking someone with skills in both Cyber (vulnerability research to detection engineering) and Programming (scripting to application development). This is a full-time on-site position with the Leidos Cyber Electromagnetic Activity (CEMA) team that is based in Huntsville, Alabama, and will require the candidate to be able to obtain and maintain a TS/SCI Clearance.

• Develop software and techniques in the protection of data, networks and host-centric capabilities, and detection and response to attacks.
• Research and develop signature-based and behavior-based defensive techniques against adversarial attacks on tactical networks.
• Develop technical solutions that require collaboration with internal and external experts, deep analyses, and understanding of impact on end-product/solution.

• Bachelor’s Degree in computer science, computer engineering, cybersecurity, or similar degree with 4-8 years of experience.
• Minimum 4+ years of professional development in various programming languages with evidence such as Git Hub.
• Intermediate Python and Bash.
• Minimum 4+ years of professional cyber focused experience, or 6+ years of personal cyber focused experience such as capture the flag (CTF) events, extensive home hardening, conferences, sharable projects, or other similar endeavors.
• Good understanding of networking protocols at all layers and network architecture, and knowledge of tools such as Wireshark.
• Working knowledge of Linux on CLI (scripting, daemons, resource monitoring, networking).
• Must be a US CITIZEN and be able to obtain and maintain a TS/SCI Clearance.

• Hands‑on experience within a security operations center (SOC) with at least one SIEM and threat hunting experience.
• Experience with C/C++, Web Development, Agile process, and related programming skills.
• Experience with Network Security Monitoring (NSM).
• Experience with writing custom detection rules in Suricata, Snort, Yara, Sigma, and similar formats.
• Certifications such as Network+, Security+, CySA+, Linux+, Pen Test+.

• Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting.
• Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support.
• Parental Paid Leave, Health and Wellness, Income Protection.

$87,100.00 - $

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.