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About the Role
At Leidos, our San Diego-based research and engineering team tackles tough defense challenges using advanced signal processing, ocean remote sensing, and high-performance computing. We are seeking a Software Engineer / Computer Scientist to build impactful software that turns massive, complex data sets into meaningful insight, supporting real-world missions.
Responsibilities
- Collaborate with scientists and engineers to design, develop, and optimize advanced algorithms for next-generation radar, optical, and infrared sensor systems.
- Build scalable, high-performance backend systems for scientific computing in distributed environments.
- Integrate, refactor, and improve scientific codebases to increase efficiency and scalability.
- Translate and optimize existing code for GPU/CUDA acceleration and parallel or distributed execution.
- Test, document, maintain, and enhance complex software in Linux/Unix environments.
- Contribute in a collaborative environment that values technical excellence, creativity, and continuous growth.
Requirements
- Bachelor’s degree in Computer Science, Applied Mathematics, Physics, or a related field with 4+ years of backend software development experience, or a Master’s degree with 2+ years of experience. Equivalent experience may be considered in place of a degree.
- U.S. citizenship and the ability to obtain a Top Secret clearance; active Top Secret clearance preferred.
- Strong expertise in C/C++ backend software development, including large-scale, performance-critical applications.
- Experience with high-performance computing, parallel and distributed processing, and technologies such as MPI.
- Hands-on experience with GPU/CUDA programming and optimization.
- Familiarity with AI/ML and LLM concepts and algorithms.
- Strong foundation in advanced mathematics or physics, with the ability to translate theory into practical software solutions.
- Proficiency in Linux/Unix development environments.
- Experience with scientific programming, algorithm development, and system-level problem-solving.
- Solid understanding of software engineering principles and best practices.
- Strong written and verbal communication skills, including software documentation.
- Active Top Secret clearance.
- Familiarity with Agile development, object-oriented design, and modern software architecture.
- Experience with Git, GitLab, MATLAB, and Fortran.
- Knowledge of multithreaded or shared-memory application development.
Skills
- C/C++
- High-performance computing
- Parallel processing
- Distributed processing
- MPI
- GPU/CUDA programming
- AI/ML
- LLM
- Advanced mathematics
- Physics
- Linux/Unix development
- Scientific programming
- Algorithm development
- System-level problem-solving
- Software engineering principles
- Agile development
- Object-oriented design
- Modern software architecture
- Git
- GitLab
- MATLAB
- Fortran
- Multithreaded application development
- Shared-memory application development
Location
- San Diego
Work Type
- Full-time
Experience Level
- 4+ years of backend software development experience (with Bachelor's)
- 2+ years of experience (with Master's)
Education Level
- Bachelor’s degree in Computer Science, Applied Mathematics, Physics, or a related field
- Master’s degree
Salary/Compensations
- $87,100.00 - $157,450.00
About the Company
- 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.