Cyber Software Engineer

Cyber Security Jobs; Huntsville (AL); On-site; USD 87,000 - 157,000; Full time

Job summary

Leidos is seeking a UAS Cyber SW Engineer within the Defense Uncrewed Systems Integration and Test to join the S3I JSIL center. You will bridge software engineering and cybersecurity, owning security architecture, secure coding, code analysis, and remediation across the full SDLC in an Agile team.

Responsibilities include integrating security into CI/CD pipelines, performing security reviews, and supporting RMF artifacts for military systems. Strong emphasis on C/C++ and security best practices.

Qualifications

• Experience securing embedded and application software for military systems using C/C++.
• Experience with static and dynamic code analysis tools to identify vulnerabilities and guide remediation.
• Familiarity with DISA STIGs/SRGs and RMF standards.
• Experience integrating security into CI/CD pipelines (DevSecOps).
• Ability to operate in an Agile/Scrum environment.
• Ability to perform security reviews of software requirements and designs.

Responsibilities

• Secure Software Development & Engineering across full lifecycle for military systems using C/C++.
• Perform and track static/dynamic code analysis to identify and remediate vulnerabilities.
• Implement and automate security controls (DISA STIGs, SRGs) across Linux, databases, and applications.
• Evaluate software requirements and architecture for security impact and risk mitigation.
• Integrate automated security testing within CI/CD pipelines (Azure DevOps, Git).
• Analyze vulnerability scans (ACAS/Nessus) to develop remediation plans.
• Support RMF artifacts and related documentation.

Skills

C/C++

Static code analysis

Dynamic code analysis

DevSecOps

RMF

Azure DevOps

Nessus

Security architecture

Tools

Parasoft

Coverity

Fortify

Nessus

Job description

Looking for an opportunity to make an impact?

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.

Your greatest work is ahead!

Leidos’ Defense Uncrewed Systems Integration and Test is seeking a motivated and ambitious UAS Cyber SW Engineer to join the Software, Simulation, Systems Engineering and Integration Directorate (S3I) Joint Technology Center - Systems Integration Lab (JSIL) Technology and Certification Center. As a UAS Cyber SW Engineer, you’ll be an integral part of a dynamic engineering team that supports UAS cyber systems. This role bridges the gap between software engineering and cybersecurity. The candidate will be responsible for the security architecture, secure coding, static/dynamic code analysis, and vulnerability remediation for critical application software across the full software development lifecycle. Working directly within an Agile/Scrum team, the candidate will ensure complex systems meet rigorous DoD cybersecurity requirements (such as DISA STIGs/SRGs and RMF standards) while actively contributing to modern continuous integration and automated software delivery pipelines.

If this sounds like the kind of environment where you can thrive, keep reading!

Leidos Defense Sector provides a diverse portfolio of systems, solutions, and services covering land, sea, air, space, and cyberspace for customers worldwide. Solutions for Defense include enterprise and mission IT, large-scale intelligence systems, command and control, geospatial and data analytics, cybersecurity, logistics, training, and intelligence analysis and operations support. Our team is solving the world’s toughest security challenges for customers with \"can't fail\" missions.

Primary Responsibilities

• Secure Software Development & Engineering: Participate in the full lifecycle design, coding, testing, and integration of secure embedded and application software for military systems using C/C++ and Object-Oriented methodologies.


• Static & Dynamic Code Analysis: Perform, analyze, and track static and dynamic code analysis scan results (e.g., Parasoft, Coverity, Fortify) to identify vulnerabilities, eliminate security flaws, and guide development remediation efforts.


• Security Control Implementation & Hardening: Work with cross-functional software teams to implement and automate technical security controls, including DISA STIGs, SRGs, and industry best practice hardening guidelines across Linux, databases, and application baselines.


• Security Code & Architecture Reviews: Evaluate software requirements, system design changes, and proposed merge requests for security impact to determine authorization and risk mitigation.


• CI/CD & Pipeline Security (DevSecOps): Integrate automated security testing and compliance checks within CI/CD pipelines (e.g., Microsoft Azure DevOps, Git).


• Vulnerability Scanning & Remediation: Analyze vulnerability scan outputs (such as ACAS/Nessus) to develop and implement code- or configuration-level remediation plans.


• RMF & Artifact Support: Assist in updating Risk Management Framework (RMF) artifacts, including software/firmware inventories, interface specifications, and Ports, Protocols, and Services Management (PPSM) documentation.

• Cross-Discipline Collaboration: Actively participate in Agile/Scrum ceremonies, technical interchange meetings, and hardware/software design reviews alongside Systems, Cyber, Safety, Operations, and Test teams.

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:

October 19, 2026

Pay Range:

Pay Range $87,100.00 - $157,450.00

The Leidos pay range for this job level is a general guideline only and 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.

About Leidos

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.

Pay and Benefits

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.

Securing Your Data

Beware of fake employment opportunities using Leidos' name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system - never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [e-mail].

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

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.