Software Engineer

Description

Summary: Join a cross-disciplinary team to solve complex national defense challenges using advanced signal processing, ocean remote sensing, and high-performance computing. Highlights: 1. Unleash your curiosity and solve what others can't 2. Thrive on solving hard problems and pushing performance boundaries 3. See your algorithms power real-world missions Apply Now Description Unleash your curiosity. Solve wh others can’t. At Leidos, we’re not just writing code—we’re decoding the unknown. Our San Diego research and engineering team tackles some of the most complex challenges in nional defense using advanced signal processing, ocean remote sensing, and high-performance computing. We’re looking for a Software Engineer / Computer Scientist who thrives on solving hard problems and pushing the boundaries of performance. You’ll join a cross-disciplinary team of scientists and engineers—experts in hydrodynamics, physics, acoustics, and signal processing—to build high-impact software th extracts meaning from massive, complex da sets. If you’re driven by innovion, energized by collaborion, and ready to see your algorithms power real-world missions—you belong here. Wh You’ll Do Collabore with scientists and engineers to design, implement, and optimize advanced algorithms th power next-generion radar, optical, and infrared sensor systems. Engineer high-performance backend systems for scientific computing and distributed environments. Integre, refactor, and optimize scientific codebases, ensuring scalability and efficiency. Transle and enhance existing code for GPU/CUDA accelerion and parallel/distributed execution. Test, document, and evolve complex software in a Linux/Unix environment. Work in a collaborive environment th values technical rigor, creivity, and growth. Required Qualificions Bachelor’s degree in Computer Science, Applied Mhemics, Physics, or reled field with 6+ years of backend software development experience; or Master’s with 4+ years. Equivalent experience may be considered in lieu of degree. U.S. citizenship and ability to obtain a Top Secret clearance (active TS preferred). Demonstred expertise in C/C++ backend software development, including large-scale, performance-critical applicions. Proven experience with high-performance computing, parallel/distributed processing, and standards such as MPI. Hands-on experience with GPU/CUDA programming and optimizion. Experience with AI/ML and LLM concepts and algorithms Strong foundion in advanced mhemics or physics, with the ability to transle theory into functional code. Proficiency in Linux/Unix development environments. Familiarity with scientific programming, algorithm implemention, and system-level problem-solving. Strong understanding of software engineering principles and best practices. Excellent written and verbal communicion and software documention skills. Preferred Qualificions Active Top Secret clearance Familiarity with Agile development, object-oriented design, and modern software architecture. Experience with Git, GitLab, MATLAB, and Fortran. Knowledge of multi-threaded or shared-memory applicions. Why Leidos? You’ll be part of a team th: Combines science, technology, and imaginion to solve real-world defense challenges. Values your curiosity as much as your technical ability. Invests in your professional growth through mentorship and hands-on innovion. At Leidos, your code doesn’t just run—it defends, detects, and delivers. If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the stus 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 step 30 — and moving faster than anyone else dares. Original Posting: January 21, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipes th this job requisition will remain open for least 3 days with an anticiped close de of no earlier than 3 days after the original posting de as listed above. 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 compension or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, educion, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market da, 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 innovions. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximely $16.7 billion for the fiscal year ended January 3, 2025. For more informion, visit www.Leidos.com. Pay and Benefits Pay and benefits are fundamental to any career decision. Th's why we craft compension packages th reflect the importance of the work we do for our customers. Employment benefits include competitive compension, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available www.leidos.com/careers/pay-benefits. Securing Your Da Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-reled informion during any part of the employment applicion 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 communice with you through emails th are genered by the Leidos.com automed system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhsApp, Telegram, etc. If you received an email purporting to be from Leidos th asks for payment-reled informion or any other personal informion (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediely by emailing us LeidosCareersFraud@leidos.com. 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-Discriminion All qualified applicants will receive considerion for employment without regard to sex, race, ethnicity, age, nional origin, citizenship, religion, physical or mental disability, medical condition, genetic informion, pregnancy, family structure, marital stus, ancestry, domestic partner stus, sexual oriention, gender identity or expression, veteran or military stus, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws. Apply Now