Software Engineer - Systems​/Signal Processing

Description

Leidos is seeking a talented Mid-Level Software Engineer to join our growing team. The ideal candidate is a strong C++ developer with a solid foundation in Linux-based systems and multi-threaded application development. You will contribute to the design, development, and maintenance of high-performance, real-time software systems. We have offices across the United States engaging in the defense, space, cyber and commercial fields, We provide responsive, cost-effective engineering, scientific and IT solutions.

As a Mid-Level Software Engineer, you will design, develop, and maintain high-performance, real-time C++ applications on Linux using modern object-oriented principles, robust multi-threaded architectures, Google Test-driven unit testing, and Git Lab-based workflows, while leveraging MATLAB for prototyping and occasionally accelerating performance with CUDA, signal-processing techniques, or radar-related algorithms. You'll take full ownership of features from concept to deployment, contribute to system design (potentially using UML), and enhance tooling with Python, Bash, and containers-all while writing clean, well-documented code and collaborating closely in a high-trust team.

We're looking for a proactive problem-solver with excellent communication skills, a passion for quality and performance, and genuine enthusiasm for tackling challenging problems the right way in a Linux/C++ centric environment.

• Candidate must possess a Bachelor's Degree in Computer Science, Computer Engineering, or equivalent degree from an ABET-accredited university and 2-4 years of professional software development experience or Masters with less than 2 years of prior relevant experience.
• Strong proficiency in modern C++ (C++11/14/17/20)
• Deep experience with object-oriented design and programming
• Proven expertise in multi-threaded application development
• Solid understanding of Linux development and debugging tools
• Proficiency with Git Lab for version control, CI/CD pipelines, and code reviews
• Experience writing unit tests using Google Test (gtest) or similar frameworks
• Familiarity with MATLAB for prototyping or data analysis
• Experience with Agile/Scrum methodologies and task management
• Candidate must be a resident of the North Alabama area or willing to relocate to the Huntsville - North Alabama, AL area.
• Must be able to obtain and maintain a DoD Secret security clearance.

Additionally, a candidate with experience in the following areas is desired, however not necessarily required.

• Hands-on experience with CUDA and GPU programming
• Background in digital signal processing (DSP)
• Exposure to radar systems or RF applications
• Experience with containerization (Docker, Podman, etc.) and orchestration tools
• Proficiency or familiarity with Python
• Bash/shell scripting for automation and tooling
• Knowledge of UML for software design and documentation

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:
December 4, 2025

For 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.

Pay Range: $67,600.00 - $

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

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