Leidos Defense Systems is seeking a self-motivated Software Engineer to work as part of a diverse team to create unique solutions for complex problems. With offices across the United States engaging in the defense, space, cyber and commercial fields, Leidos provides responsive, cost-effective engineering, scientific and IT solutions.
The Threat Systems Development Branch is a group of engineers who specialize in foreign threat radar systems, RF software-in-the-loop (SIL) and hardware-in-the-loop (HWIL) simulators, and open-air radar development. The candidate selected for this position will support projects for the Defense Intelligence Community (IC), Air Force, and large prime contractors.
Primary Responsibilities:
- Utilize DevOps tools like GitLab for CI/CD practices.
- Implement and enhance complex software systems, including processing-intensive analytics on real-time systems.
- Collaborate with Systems Engineers, Software Engineers, Architects, and Operations teams to develop RF simulation system backend software.
- Participate in test, staging, and production deployments, ensuring system reliability and performance.
- Configure and manage Linux and Windows operating systems, install/load software, troubleshoot, maintain network integrity, and implement system enhancements.
- Work with multidisciplinary teams to debug problems when integrating threat models.
Qualifications
- Candidate must have a BA/BS degree in Computer Science, Computer Engineering, or a related field, and 3 years of relevant experience, or 7+ years of overall relevant experience in lieu of a degree.
- Experience writing object oriented code in C++
- Experience with scripting languages, such as Bash and Python
- Experience with Linux and Windows software development
- Knowledge of cyber-secure software development principles
- Ability and willingness to obtain and maintain a DoD Secret clearance. (U.S. Citizenship is required)
Candidate must be a resident of the North Alabama area or willing to relocate to the Huntsville - North Alabama area
Desired Skills:
- Preference will be given to candidates who possess one or more of the following qualifications:
- Knowledge of radar and RF principles
- High performance computing – x86 intrinsics, ARM SVE, GPU, etc.
- Experience with Real Time OSs – RT-Linux, INTime, FreeRTOS, Integrity, VXWorks, etc..
- Familiarity with Yocto.
- Understanding of network principles and protocols (ISO/OSI model, TCP/IP, etc.)
- Experience configuring machines to meet NIST, CMMC, and STIG requirements.
- Active Secret or higher security clearance.
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:March 25, 2026For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
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.
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What We Do
We Are Leidos For 50 years we have been tackling some of the biggest problems that face our nation and our world. OUR MISSION Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020. 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 newly launched 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.
