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LeidosLE

Software Engineer - Functional Programming

Leidos is an American defense, aviation, information technology, and biomedical research company that provides scientific, engineering, systems integration, and technical services to government and commercial customers.

Leidos

Employee count: 5000+

Salary: 105k-189k USD

United States only

Are you a motivated Software Engineer with technical, hands-on experience using functional programming to develop real-world systems? Join us at the Leidos Innovations Center, Information and Data Science Division, with a group of highly skilled and innovative individuals and a variety of exciting R&D programs.

As a Software Engineer, you will appeal to your expertise in functional programming and other programming language theory concepts to design and implement sophisticated software solutions spanning all levels of the computational stack for operational technology (OT) and enterprise IT systems alike. You will work in a dynamic, high-impact environment requiring knowledge of embedded systems, cyber-physical systems, AI and autonomy, and technologies relevant to the continuous integration/continuous deployment of software.

Primary Responsibilities:

  • Architect and develop software in support of the Resilient Systems Campaign within the Information and Data Science Division, to include providing software engineering expertise on awarded DARPA programs.
  • Design, develop, and maintain custom tools and frameworks to support the development of high-assurance, resilient software.
  • Utilize the state-of-the-art in semi-formal and formal methods tools in the development of high-assurance, resilient software.
  • Produce technical documentation, mentor junior engineers, and contribute to knowledge transfer within the Resilient Systems Campaign.
  • Contribute to efforts to promote the upskilling of the broader Leidos workforce on the topics of functional programming, programming language theory, and industrialized formal methods.

Basic Qualifications:

  • Bachelor’s degree in computer science, computer engineering, electrical engineering, or a closely related technical field.
  • Minimum of 8 years of experience, with a significant portion focused on applying functional programming in the development of real-world systems; master’s with 6-10 years of prior relevant experience. May possess a Doctorate in technical domain.
  • Proven expertise in at least one functional programming language, to include Haskell, OCaml, F#, Scala, Clojure, Elixir, or others.
  • Demonstrated competence in common imperative programming languages, to include C/C++, Java, Python, and others.
  • Hands-on experience developing and fielding real-world software.
  • Excellent analytical, problem-solving, and critical thinking skills and ability to work independently on complex tasks and lead technical efforts.
  • Strong technical writing and communication skills.
  • Strong understanding of sound software development principles and practices and ability to define software development processes.
  • Ability to obtain and maintain a DoD Secret clearance. (U.S. Citizenship is required)

Preferred Qualifications:

  • Demonstrated experience with semi-formal and formal methods tools to include property-based and random testing frameworks, SMT solvers, interactive theorem provers, model checkers, and others.
  • Demonstrated experience with model-based systems engineering practices based on SysMLv2 and/or AADL.
  • Demonstrated experience developing software for embedded systems, to include single-board computers, FPGAs, MPSoCs, and other bespoke hardware targets.
  • Demonstrated experience developing high-criticality software with high-throughput requirements, e.g. networking and streaming data processing applications.
  • Active DoD Secret clearance is preferred

LInC

If you're looking for comfort, keep scrolling. 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.

Original Posting:

September 22, 2025

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 $104,650.00 - $189,175.00

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 the job

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Posted on

Job type

Full Time

Experience level

Mid-level

Salary

Salary: 105k-189k USD

Location requirements

Hiring timezones

United States +/- 0 hours

About Leidos

Learn more about Leidos and their company culture.

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Leidos' story begins in 1969 when Dr. J. Robert Beyster, a visionary scientist, founded Science Applications Incorporated (SAI) in La Jolla, San Diego, California. With a modest investment and a powerful idea, Dr. Beyster embarked on a journey to apply scientific expertise to solve complex problems. The company's early days were marked by a focus on research and engineering, tackling challenges for various government and commercial clients. One of its initial significant projects involved studying radiation-based cancer therapy for the Los Alamos National Laboratory, which laid the groundwork for Leidos' future health business. SAI soon expanded its reach, opening an office in Albuquerque to support the Air Force Weapons Laboratory's work on electromagnetic phenomena, a precursor to the company's Physical Science Group.

Throughout the 1980s, the company, then known as Science Applications International Corporation (SAIC), strategically shifted its focus towards national security and defense, solidifying its position as a key government services provider. This era set the stage for substantial growth and diversification. The 1990s saw SAIC continue to expand its offerings and international presence, securing its first major global contract with the Kuwaiti Defense Forces. A pivotal moment arrived in 2013 when SAIC underwent a significant transformation, splitting into two independent, publicly traded companies: a new company retaining the SAIC name and the original company, which was rebranded as Leidos (a name derived from 'kaleidoscope'). Leidos, as the legal successor to the original SAIC, inherited its pre-2013 stock price and corporate filing history and established its new headquarters in Reston, Virginia. This strategic move allowed Leidos to sharpen its focus on national security, health, and engineering solutions. Another major milestone occurred in August 2016 when Leidos merged with Lockheed Martin's Information Systems & Global Solutions (IS&GS) business, a landmark transaction that created the defense industry's largest IT services provider and significantly expanded Leidos' capabilities and market share. Today, Leidos stands as a Fortune 500® global science and technology leader, employing approximately 47,000 people worldwide and generating billions in annual revenue, committed to making the world safer, healthier, and more efficient through innovation and technology.

Employee benefits

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Paid sick days

Leidos offers paid sick days.

Health Insurance

Leidos offers health insurance.

Dental Insurance

Leidos offers dental insurance.

Vision Insurance

Leidos offers vision insurance.

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Leidos

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Leidos hiring Software Engineer - Functional Programming • Remote (Work from Home) | Himalayas