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Mid-level Software Engineer; Transportation​/Computer Vision Security Clearance

Job in McLean, Fairfax County, Virginia, USA
Listing for: Leidos
Full Time position
Listed on 2026-02-27
Job specializations:
  • Software Development
    Software Engineer
Job Description & How to Apply Below
Position: mid-level Software Engineer (Transportation/Computer Vision) with Security Clearance
R
- Description Join us in improving and shaping the future of the smart mobility with a group of intelligent, motivated, and dedicated individuals! Leidos operates the Federal Highway Administration’s (FHWA) Saxton Transportation Operations Laboratory (STOL), a US Department of Transportation (USDOT) onsite R&D lab located at the Turner Fairbank Highway Research Center. STOL’s focus is on improving transportation system operations to achieve USDOT’s safety, mobility, sustainability and equity goals.

STOL spearheads a variety of exciting R&D projects involving emerging technologies, including but not limited to infrastructure and vehicle connectivity and automation, everything-in-the loop simulation, and AI/ML modeling in a fast-paced and collaborative laboratory environment to solve novel transportation research problems. Learn about STOL here: (Use the "Apply for this Job" box below). To promote these efforts, Leidos is looking for a onsite mid-level Software Engineer to join our team!

CANDIDATE MUST: be able to work onsite full time in McLean, VA AND have the Ability to obtain and maintain a Public Trust security clearance ( which includes current three years immediate residency in the US ).

Primary Responsibilities:

* Analyze and assess the team’s existing ITS software systems to understand their architecture, and how they can be redesigned into more modular, scalable, and maintainable components.

* Contribute to internal best practices for software development and lead knowledge sharing to support adoption across development teams.

* Work with cross-functional internal team to determine technical feasibility of projects, breakdown project goals into software development tasks, and assist with overall effort and timeline estimation of planned work.

* Lead the execution of planned technical work, including design work, addressing unplanned technical challenges, and being responsive to changes in customer needs.

* Directly interact with on-site customer representatives and external stakeholders to communicate across technical disciplines as needed throughout a project’s life cycle.

* Lead development for research prototypes and proof-of-concepts for various intelligent transportation systems (ITS) applications across a variety of ITS devices, including infrastructure, vehicle, and cloud systems.

* Participate in and help shape our open-source software process, triaging and addressing issues reported by external users and evaluating 3rd party code contributions.

* Identify, document, and formulate approaches to addressing areas of technical debt.

* Conduct hands-on test events and demonstrations, on-site at TFHRC and off-site at test facilities. Minimal

Qualifications:

* * Interest in working with emerging technologies and shaping the future of transportation.

* A Bachelor’s degree in computer science or engineering with at least 4 years of professional experience in object-oriented software development, or a Master’s degree with at least 2 years of professional experience in object-oriented software development.

* Experience and familiarity with manual memory management in languages like C/C++.

* Experience in developing solutions to open-ended research questions and developing novel approaches to solving problems.

* Strong ability and interest to learn new problem domains, new skills, algorithms, and concepts.

* Interest and motivation to develop software to answer valuable research questions to advance transportation technology.

* Experience with Git.

* Experience with Docker (including docker-compose).

* Experience developing in an Agile framework using toolsets such as JIRA and Confluence.

* Proficiency in software quality techniques and practices (automated unit testing, test-driven design/development, CI/CD pipelines with Git Hub Actions, static code analysis tools, etc.).

* Understanding of mathematical fundamentals, including geometry, linear algebra, probability, graph theory, set theory, and statistics.

Preferred Qualifications:

* Extensive experience designing, implementing, and maintaining C++, Java, and Python software packages in a Linux environment.

* Experience…
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