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Leidos

Mid-Level Defensive Cyber Software Developer

Leidos

Published 16 May 2026
Huntsville, TX, USA
87K - 157K USD Annual
Full Time

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Role Highlights

Languages used

Python
C++

Key skills

Computer Science
Security Engineer
Network Security
Operations
Modelling
Research
Scripting
Data
Architecture
SOC
SIEM
Agile

Tools, Libraries and Frameworks

GitHub
Linux
CLI

Description

The role involves developing unique solutions to address cyber, electronic warfare, and positioning, navigation, and timing threats against weapon systems. The developer will create software and techniques to protect data, networks, and host-centric capabilities. Responsibilities include researching and developing signature-based and behavior-based defensive measures against adversarial attacks. The position requires collaborating with internal and external experts to perform deep analyses of solutions. The work involves continuous learning and adaptation to address broad attack vectors.

Required Qualifications and Skills

Candidates must possess a bachelor’s degree in computer science, computer engineering, cybersecurity, or a related field. Applicants are required to have four to eight years of professional experience, including at least four years in cyber-focused development. Proficiency in Python, Bash, and Linux command-line operations is necessary, along with a strong understanding of networking protocols. Additionally, the role requires US citizenship and the ability to obtain and maintain a TS/SCI clearance.

Disclaimer

Disclaimer: Job and company description information and some of the data fields may have been generated via GPT-4 summarisation and could contain inaccuracies. The full external job listing link should always be relied on for authoritative information.

About the company

Leidos

Size

33167

Founded

HQ

Reston, US

Public/Private

Public Company

Description

Leidos is a Fortune 500® innovation company rapidly addressing the world’s most vexing challenges in national security and health. Our 47,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Virginia, Leidos reported annual revenues of approximately $14.4 billion for the fiscal year ended December 30, 2022. Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®. Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos. Your most important work is ahead, visit careers.leidos.com for our latest opportunities.

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