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Job #: R-00119274
Location: McLean, VA
Category: Software Engineering
Schedule (FT/PT): Full Time
Travel Required: Yes, 10% of the time
Shift: Day
Remote Type: No Remote
Clearance: Public Trust
Referral Eligibility: Eligible
Referral Bonus Amount: $2000
Group: Civil

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Are you interested in improving and shaping the transportation industry in a group of intelligent and motivated individuals?  Leidos operates the Federal Highway Administration’s (FHWA) Saxton Transportation Operations Laboratory (STOL), a USDOT research lab focused on the improvement of transportation operations, safety, mobility, and environmental impacts.  STOL provides a variety of services to support the advancement and deployment of emerging technologies, including vehicle automation and communication.

Leidos is part of a larger FHWA research team in a fast-paced laboratory environment that pushes the boundaries of connected and autonomous vehicle technology for the FHWA. The team at STOL demonstrates capabilities associated with vehicle-to-vehicle and vehicle-to-infrastructure communication that will support the larger Intelligent Transportation System initiatives. We also study human factors, such as a driver’s ability to recognize and react to various situations, including interaction with automated vehicles. 

To support these goals, Leidos is hiring a Senior Simulation Engineer to work in McLean, Virginia as part of a team of researchers developing the latest transportation research technology. 

The Senior Simulation Engineer will lead and direct of a team of developers writing and extending a variety of applications and components in support of transportation research, including connected vehicles and human factors. The simulation team focuses on moving elements of the transportation ecosystem into a simulation environment, where tools can be tested safely and efficiently and new algorithms can be explored before deployment on hardware.

The simulation team assignments may include simulation development, integration, and operation; data parsing and composition; communications with network or hardware devices including radios; guidance algorithms; control of automated vehicles; data collection, display, storage, retrieval, and analysis; rendering of visual scenes; database operations and data warehousing; and developing systems in an open-source environment for use by researchers across the country.

The successful candidate will lead and participate in the design, development, and testing of software, primarily in C++ in a Linux environment, but may also require C, Java, Python, C#, SQL, Javascript, or scripting. Software will routinely be developed across Linux, Windows, and cloud platforms. Where necessary, user documentation is generated or updated to reflect changes in the software functionality. Documentation, code, and unit tests are routinely subjected to peer review in an open-source environment.

This role will play a significant role in implementing, adopting, and evaluating Vehicle-to-anything (V2X) and Automated Driving System (ADS) simulation technologies developed both in-house and by others. 

The work will be approximately split between project work (~60%), team management (~35%), and proposals (~5%).

Anticipated pay range for this role: $85,000 - $100,000 - $115,000

Systems of interest relate, but are not limited, to the following:

  • Cloud computing and cloud-based simulation
  • Automated driving system simulation technologies
  • Vehicle dynamic simulations and multi-resolution co-simulation
  • V2X communication hardware, software, and standards
  • Vehicle automation and cooperation
  • Sensor fusion and perception
  • Traffic simulation
  • Driving simulator
  • 3D and HD mapping
  • Data visualization
  • Traffic operations
  • Intelligent transportation systems.
  • Augmented reality (AR) and Virtual reality (VR)

Required Education & Experience:

  • Bachelor’s degree in computer science, computer engineering, or other relevant science or engineering discipline (e.g., transportation engineering, electrical engineering, etc.)
  • 6+ years of experience developing software with progressively increasing responsibilities.
  • 2+ years of experience leading a team of software engineers (2-5) including hiring, career development, personnel management, and resource loading.
  • High level of knowledge and experience with C++ and Python.
  • Ability to obtain and maintain a Public Trust security clearance (which includes three years of immediate residency in the US).
  • Experience leading in an agile development environment.
  • Experience with distributed computing middleware (e.g. ROS, DDS, TENA, Kafka, etc.).
  • Strong understanding of software quality techniques and practices (automated unit testing, test-driven design/development, continuous integration, etc.).
  • Experience providing constructive feedback in software design and code reviews in order to improve team knowledge and ensure a robust system.
  • Cloud computing development and configuration.
  • Operation and development for driver-in-the-loop, software-in-the-loop, hardware-in-the-loop, or motion platform simulators.
  • Experience developing proposals including technical details, work estimates, and costing.
  • Valid driver’s license in the US.

Desired Experience:

  • Hands-on experience with traffic simulation tools like SUMO, Vissim, Aimsun, TransModeler or similar.
  • Hands-on experience with vehicle dynamic and sensor simulation tools, such as CARLA, LGSVL, CARSIM, CARMaker or similar.
  • Hands-on experience with communication simulation tools like NS-3, OMNET++, NetSim, OPNET, Matlab or similar.
  • Experience managing projects and programs using agile development tools (e.g. Jira, Confluence).
  • Developing software systems in an open-source environment
  • Agile Scrum Master certification
  • Cloud computing development and configuration
  • Experience with HD maps and tools (e.g., Roadrunner)
  • Experience with creating 3D maps for 3D simulators (Unreal Engine, CARLA)
  • Understanding of communication protocols – TCP/UDP, SNMP
  • Knowledge of IP concepts, techniques, and common practices (e.g., working with sockets, internal vs external IP addressing, routing, etc)
  • Familiarity with concepts of co-simulation or co-simulation frameworks (FMI/HLA/MOSAIC)
  • Knowledge of vehicle electronic systems and standards (SAE, ISO, etc.)
  • Experience with Git, Maven, Gradle, Docker and continuous integration
  • Software development for AR and VR technology

Pay Range:

Pay Range $78,000.00 - $141,000.00

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

Leidos is a Fortune 500® technology, engineering, and science solutions and services leader working to solve the world’s toughest challenges in the defense, intelligence, civil, and health markets. The company’s 46,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Virginia, Leidos reported annual revenues of approximately $14.4 billion for the fiscal year ended December 30, 2022.  For more information, visit

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [email protected].

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Diversity

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

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