Software Engineer

Leidos Holding • $69K — $125K *
San Diego, CA 92154In-Person
Aerospace & Defense
Less than 5 years of experience
Today
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Job Overview by Ladders

Qualifications

  • Bachelor's degree in Computer Science, Applied Mathematics, Physics, or related field with 4+ years of backend software development experience; or Master's with 2+ years.
  • U.S. citizenship and ability to obtain a Top Secret clearance (active TS preferred).
  • Demonstrated expertise in C/C++ backend software development for large-scale, performance-critical applications.
  • Proven experience with high-performance computing and parallel/distributed processing, including standards such as MPI.
  • Hands-on experience with GPU/CUDA programming and optimization.
  • Experience with AI/ML concepts and algorithms.
  • Strong foundation in advanced mathematics or physics for effective code development.
  • Proficiency in Linux/Unix development environments.

Responsibilities

  • Collaborate with scientists and engineers to design, implement, and optimize advanced algorithms for radar, optical, and infrared systems.
  • Engineer high-performance backend systems for scientific computing and distributed environments.
  • Integrate, refactor, and optimize scientific codebases for scalability and efficiency.
  • Translate and enhance existing code for GPU/CUDA acceleration and parallel execution.
  • Test, document, and evolve complex software in a Linux/Unix environment.
  • Engage in a collaborative environment valuing technical rigor, creativity, and growth.

Benefits

  • Comprehensive health insurance.
  • Retirement savings plans, including 401(k).
  • Professional development and continuing education opportunities.
  • Flexible work arrangements.
  • Generous paid time off policy.
Full Job Description
Job Description

What You'll Do
  • Collaborate with scientists and engineers to design, implement, and optimize advanced algorithms that power next-generation radar, optical, and infrared sensor systems.
  • Engineer high-performance backend systems for scientific computing and distributed environments.
  • Integrate, refactor, and optimize scientific codebases, ensuring scalability and efficiency.
  • Translate and enhance existing code for GPU/CUDA acceleration and parallel/distributed execution.
  • Test, document, and evolve complex software in a Linux/Unix environment.
  • Work in a collaborative environment that values technical rigor, creativity, and growth.


Required Qualifications
  • Bachelor's degree in Computer Science, Applied Mathematics, Physics, or related field with 4+ years of backend software development experience; or Master's with 2+ years. Equivalent experience may be considered in lieu of degree.
  • U.S. citizenship and ability to obtain a Top Secret clearance (active TS preferred).
  • Demonstrated expertise in C/C++ backend software development, including large-scale, performance-critical applications.
  • Proven experience with high-performance computing, parallel/distributed processing, and standards such as MPI.
  • Hands-on experience with GPU/CUDA programming and optimization.
  • Experience with AI/ML and LLM concepts and algorithms
  • Strong foundation in advanced mathematics or physics, with the ability to translate theory into functional code.
  • Proficiency in Linux/Unix development environments.
  • Familiarity with scientific programming, algorithm implementation, and system-level problem-solving.
  • Strong understanding of software engineering principles and best practices.
  • Excellent written and verbal communication and software documentation skills.


Preferred Qualifications
  • 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 applications.


Original Posting:
July 6, 2026

Pay Range:
Pay Range $69,550.00 - $125,725.00

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.

About Leidos Holding

Leidos Holding Careers

Joining Leidos Holding presents an unparalleled opportunity to advance one's career with a leader in innovation and technology. The company offers a plethora of job opportunities aimed at fostering professional growth and development in a diverse and inclusive environment.

Explore Career Opportunities

Leidos Holding is actively seeking skilled professionals who are passionate about leveraging their expertise to drive innovation and leadership in their fields. With a variety of open positions, Leidos Holding provides a platform for individuals to challenge themselves in a dynamic work environment.

Innovation and Professional Growth

At Leidos Holding, innovation is at the core of everything they do. Employees are encouraged to think creatively and push boundaries. The company supports this drive for innovation through comprehensive professional development and diversity training programs that are designed to enhance skills and foster leadership.

Commitment to Diversity and Inclusion

Leidos Holding is committed to creating a workplace where diversity is not only recognized but celebrated. With a culture that values and promotes diversity, Leidos Holding ensures that all team members have the opportunity to contribute, learn, and grow.

Internship Programs

For those starting their career, Leidos Holding offers internship programs that provide a robust foundation in the industry. Internships are a great way to develop essential skills, gain valuable work experience, and build professional networks.

Benefits and Culture

Employees at Leidos Holding enjoy a range of benefits designed to support their professional and personal lives. The company culture is built on a foundation of respect and integrity, providing a supportive and collaborative environment where every team member is valued.

Join the Team

Leidos Holding is hiring! Explore job opportunities that match your skills and interests. Leidos Holding looks for driven, curious, and innovative individuals to join their team. Positions are available across various disciplines and experience levels.

Stay Connected

Stay informed with the latest career tips, industry insights, and company news from Leidos Holding. Subscribe to receive updates and be the first to know about new job opportunities, company developments, and more.

Prepare for Your Interview

To prepare for an interview at Leidos Holding, candidates should familiarize themselves with the company's missions and values, update their resumes, and be ready to discuss how their background and skills align with the position they are applying for.

Networking and Career Advancement

Leidos Holding encourages its employees to engage in networking within the company to discover new opportunities for career advancement. The leadership team at Leidos Holding is dedicated to supporting employees in their career paths with ample opportunities for networking and growth.

Explore Leidos Holding Jobs and Careers

Discover the exciting career opportunities at Leidos Holding today. With a commitment to employee growth, innovation, and diversity, Leidos Holding is the perfect place to advance your career. Check out the latest job listings and find your perfect fit at Leidos Holding.

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Industry
Technical Services
* Ladders Estimates

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