Junior Software Engineer

Leidos Holding$57K — $104K *
Aerospace & Defense
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in software engineering, computer science, or related field.
  • Proficient in object-oriented programming, particularly C++.
  • Familiarity with software design principles and version control (Git).
  • Strong analytical and problem-solving skills.
  • 0+ years of relevant experience.
  • U.S. citizenship required.
  • Ability to obtain and maintain a DoD security clearance.
  • Residence in or willingness to relocate to the Huntsville, AL area.

Responsibilities

  • Write software for EO/IR sensor systems using primarily C++ and C#.
  • Collaborate with a multidisciplinary team of engineers and scientists.
  • Support multiple software development tasks in parallel.
  • Communicate effectively with team members and management.
  • Contribute to design documentation and technical specifications.

Benefits

  • Work within a diverse and experienced team environment.
  • Opportunities for professional growth and development.
  • Engagement in meaningful projects that support national defense.
  • Work-life balance in a fast-paced setting.
Full Job Description
Leidos’ Defense Systems, Threat Modeling and Simulation Portfolio, is seeking a talented, entry-level Junior Software Engineer with the ability and experience to work multiple projects (primarily modeling & simulation efforts) within the Threat Modeling and Simulation Portfolio.

You will join a diverse team of junior-to-senior software developers, engineers, and scientists to help create unique solutions for complex problems. Our team solves important problems that make a difference and support our customers in the current and future defense of our nation; primarily in the areas of sensor characterization, modeling, simulation, data analysis, and algorithm development for electro-optical infrared (EO/IR) systems. The ideal developer candidate will also demonstrate experience in and/or enthusiasm toward developing a broader technical capability to support overlapping engineering and scientific disciplines with a particular focus on writing software to solve problems. Candidate will be expected to support multiple tasks in parallel, productively contribute to a team environment, and communicate effectively to management, coworkers, and customers.

You’ll work within an established and very skilled team, alongside other contractors and our customers. Joining our team offers the opportunity to work with experts in their field and grow your career in an area that is appealing to you. You will quickly become an integral member of our team and be given the opportunity to take responsibility for challenging problems of your own. Because of this, we seek team members that are driven and engaged in their work while simultaneously demonstrating high character, given that you will often be working on sensitive and unique problems which require a high degree of trust from our customers.

Primary Responsibilities.

  • Candidate can expect to work closely with a team of engineers and scientists to write software (using primarily C++ and C#) to solve problems in a variety of disciplines to include EO/IR sensor systems.
  • Candidate is also expected to have the ability to work and to communicate effectively within a multidisciplinary team and have familiarity with software development for both Windows and Linux OS.

Basic Qualifications.

  • Candidate must possess at least a Bachelor’s degree from an accredited university in software engineering, computer science, or an equivalent engineering or science degree with relevant software development experience.
  • Strong, demonstrated experience in object-oriented programming principles with proficiency in C++.
  • Understanding of software design principles and version control (Git).
  • Strong analytical and problem-solving skills.
  • 0+ years of experience in a related field.
  • Must be a US Citizen.
  • Must be able to obtain and maintain a DoD security clearance.
  • Must be a resident of the North Alabama area or willing to relocate to the Huntsville – North Alabama, AL, area.

Preferred Qualifications.

  • Highly organized, demonstrating the ability to work independently at times due to a fast-paced and highly productive work environment .
  • Interest in working multiple programs with intermediate ability in C# and Python, along with ability to create design documentation, requirements specifications, and other technical documentation.
  • Experience or interest in one or more of the following: EO/IR phenomenology, image processing, Kalman filtering, GPU programming and/or CUDA programming, developing AI/ML solutions, build systems such as CMake.
  • Preference may be given to candidates with one or more of the following: recent stellar academic performance, a Secret clearance or above; a TS/SCI clearance (with CI Polygraph).
Original Posting:
July 10, 2026

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:
Pay Range $57,850.00 - $104,575.00

The Leidos pay range for this job level is a general guideline onlyand 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.

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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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