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Software Engineer - Careers at Leidos

Leidos

Software Engineer - Careers at Leidos

full-timePosted: Feb 3, 2026

Job Description

Unleash Your Curiosity at Leidos

At Leidos, we're decoding the unknown in national defense through advanced signal processing, ocean remote sensing, and high-performance computing. Join our San Diego research and engineering team to solve complex challenges alongside experts in hydrodynamics, physics, acoustics, and signal processing.

What You’ll Do

  • Collaborate to design, implement, and optimize algorithms powering next-generation radar, optical, and infrared sensors.
  • Build high-performance backend systems for scientific computing in distributed environments.
  • Integrate, refactor, and optimize codebases for maximum scalability and efficiency.
  • Enhance legacy code with GPU/CUDA acceleration and parallel/distributed execution.
  • Test, document, and maintain complex software in Linux/Unix settings.
  • Thrive in a culture of technical rigor, creativity, and continuous growth.

Required Qualifications

  • Bachelor’s in Computer Science, Applied Mathematics, Physics or related with 6+ years backend experience; Master’s with 4+ years. Equivalent experience considered.
  • U.S. citizenship; Top Secret clearance required (active preferred).
  • Expertise in C/C++ for large-scale, performance-critical apps.
  • Experience with HPC, MPI, GPU/CUDA, AI/ML/LLM concepts.
  • Strong math/physics foundation; Linux/Unix proficiency; excellent communication.

Preferred Qualifications

  • Active Top Secret clearance.
  • Agile, OOP, Git/GitLab, MATLAB, Fortran, multi-threaded apps.

Why Leidos?

Combine science, technology, and imagination to deliver mission-critical impact. We value curiosity, invest in your growth, and empower you to outthink the status quo in defense innovation. Your code defends, detects, and delivers.

Locations

  • San Diego, California, United States

Salary

87,100 - 157,450 USD / yearly

Estimated Salary Rangehigh confidence

87,100 - 157,450 USD / yearly

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • C/C++ backend developmentintermediate
  • High-performance computingintermediate
  • GPU/CUDA programmingintermediate
  • Parallel/distributed processing (MPI)intermediate
  • AI/ML and LLM algorithmsintermediate
  • Linux/Unix environmentsintermediate
  • Scientific programmingintermediate
  • Advanced mathematics/physicsintermediate

Required Qualifications

  • Bachelor’s in Computer Science, Applied Math, Physics or related + 6+ years experience or Master’s + 4+ years (experience)
  • U.S. citizenship and Top Secret clearance eligibility (active TS preferred) (experience)
  • Expertise in performance-critical C/C++ applications (experience)
  • Strong software engineering principles and documentation skills (experience)

Responsibilities

  • Design, implement, and optimize advanced algorithms for radar, optical, and infrared sensors
  • Engineer high-performance backend systems for scientific computing and distributed environments
  • Integrate, refactor, and optimize scientific codebases for scalability
  • Translate code for GPU/CUDA acceleration and parallel execution
  • Test, document, and evolve software in Linux/Unix environments

Benefits

  • general: Collaborative cross-disciplinary team environment
  • general: Professional growth through mentorship and innovation
  • general: Work on high-impact national defense missions
  • general: Investment in technical rigor and creativity
  • general: Opportunities to push boundaries in advanced signal processing and HPC

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Jobs in San Diego CALeidos CareersHiring in United StatesDefense Tech JobsHPC Software EngineeringEngineeringInformation TechnologySecurity

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Leidos logo

Software Engineer - Careers at Leidos

Leidos

Software Engineer - Careers at Leidos

full-timePosted: Feb 3, 2026

Job Description

Unleash Your Curiosity at Leidos

At Leidos, we're decoding the unknown in national defense through advanced signal processing, ocean remote sensing, and high-performance computing. Join our San Diego research and engineering team to solve complex challenges alongside experts in hydrodynamics, physics, acoustics, and signal processing.

What You’ll Do

  • Collaborate to design, implement, and optimize algorithms powering next-generation radar, optical, and infrared sensors.
  • Build high-performance backend systems for scientific computing in distributed environments.
  • Integrate, refactor, and optimize codebases for maximum scalability and efficiency.
  • Enhance legacy code with GPU/CUDA acceleration and parallel/distributed execution.
  • Test, document, and maintain complex software in Linux/Unix settings.
  • Thrive in a culture of technical rigor, creativity, and continuous growth.

Required Qualifications

  • Bachelor’s in Computer Science, Applied Mathematics, Physics or related with 6+ years backend experience; Master’s with 4+ years. Equivalent experience considered.
  • U.S. citizenship; Top Secret clearance required (active preferred).
  • Expertise in C/C++ for large-scale, performance-critical apps.
  • Experience with HPC, MPI, GPU/CUDA, AI/ML/LLM concepts.
  • Strong math/physics foundation; Linux/Unix proficiency; excellent communication.

Preferred Qualifications

  • Active Top Secret clearance.
  • Agile, OOP, Git/GitLab, MATLAB, Fortran, multi-threaded apps.

Why Leidos?

Combine science, technology, and imagination to deliver mission-critical impact. We value curiosity, invest in your growth, and empower you to outthink the status quo in defense innovation. Your code defends, detects, and delivers.

Locations

  • San Diego, California, United States

Salary

87,100 - 157,450 USD / yearly

Estimated Salary Rangehigh confidence

87,100 - 157,450 USD / yearly

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • C/C++ backend developmentintermediate
  • High-performance computingintermediate
  • GPU/CUDA programmingintermediate
  • Parallel/distributed processing (MPI)intermediate
  • AI/ML and LLM algorithmsintermediate
  • Linux/Unix environmentsintermediate
  • Scientific programmingintermediate
  • Advanced mathematics/physicsintermediate

Required Qualifications

  • Bachelor’s in Computer Science, Applied Math, Physics or related + 6+ years experience or Master’s + 4+ years (experience)
  • U.S. citizenship and Top Secret clearance eligibility (active TS preferred) (experience)
  • Expertise in performance-critical C/C++ applications (experience)
  • Strong software engineering principles and documentation skills (experience)

Responsibilities

  • Design, implement, and optimize advanced algorithms for radar, optical, and infrared sensors
  • Engineer high-performance backend systems for scientific computing and distributed environments
  • Integrate, refactor, and optimize scientific codebases for scalability
  • Translate code for GPU/CUDA acceleration and parallel execution
  • Test, document, and evolve software in Linux/Unix environments

Benefits

  • general: Collaborative cross-disciplinary team environment
  • general: Professional growth through mentorship and innovation
  • general: Work on high-impact national defense missions
  • general: Investment in technical rigor and creativity
  • general: Opportunities to push boundaries in advanced signal processing and HPC

Target Your Resume for "Software Engineer - Careers at Leidos" , Leidos

Get personalized recommendations to optimize your resume specifically for Software Engineer - Careers at Leidos. Takes only 15 seconds!

AI-powered keyword optimization
Skills matching & gap analysis
Experience alignment suggestions

Check Your ATS Score for "Software Engineer - Careers at Leidos" , Leidos

Find out how well your resume matches this job's requirements. Get comprehensive analysis including ATS compatibility, keyword matching, skill gaps, and personalized recommendations.

ATS compatibility check
Keyword optimization analysis
Skill matching & gap identification
Format & readability score

Tags & Categories

Jobs in San Diego CALeidos CareersHiring in United StatesDefense Tech JobsHPC Software EngineeringEngineeringInformation TechnologySecurity

Answer 10 quick questions to check your fit for Software Engineer - Careers at Leidos @ Leidos.

Quiz Challenge
10 Questions
~2 Minutes
Instant Score

Related Books and Jobs

No related jobs found at the moment.