Senior Software Developer

Leidos’ High Fidelity Simulation Business Area designs and delivers cutting-edge system-of-systems solutions that power world-class simulation, training, and analysis products for the U.S. Navy. Our work spans advancements in software standards and technologies for data processing, storage, simulation and generation, and visualization, as well as the development of new software capabilities for Navy systems operating afloat and ashore.

In this role, based at a U.S. Government facility in Bethesda, MD, you will apply state-of-the-art technologies to develop advanced sonar tactical decision aids (TDAs) and related software capabilities that directly support the Fleet. You will be part of a high-performing team tackling complex technical challenges across data, simulation, visualization, and tactical decision support—helping shape the Navy’s tactical edge and making a tangible impact on national security.

At Leidos, we empower our engineers to do meaningful work while continually building new skills, expanding their technical capabilities, and growing the career they want to achieve.

Primary Responsibilities.

• Mentor a de-centralized team of 5+ developers, applying agile methodologies within a larger 50+ member program.

• Collaborate in an agile environment to design, develop, and deliver complex mission system software.

• Own and deliver solutions built with Java, Scala, React, and other modern technologies.

• Explore and apply new frameworks and languages such as Angular, Rust, or Scala to meet evolving mission needs.

• Troubleshoot and resolve complex technical challenges with creativity and efficiency.

• Make informed decisions even with limited information in dynamic, fast-paced environments.

• Recognize when to adapt or pivot during implementation to ensure the best technical and mission outcomes.

• Drive process improvements and introduce innovative workflows that enhance team performance.

• Influence positive change through collaboration, initiative, and technical leadership.

• Balance multiple priorities and adapt quickly to urgent or shifting requirements.

• Communicate clearly across teams, stakeholders, and leadership.

• Apply agile best practices to deliver high-quality, iterative results that make an impact.

Travel occasionally to Manassas, VA for integration efforts and direct team collaboration.

Basic Qualifications.

• Master’s degree in Engineering, Computer Engineering, Computer Science, Information Technology, or Information Systems

• Ten (10) years of professional experience with software engineering.

• Experience with NoSQL/NewSQL data stores, the Scala, Rust, TypeScript programming languages.

• Experience with visualization technologies and user-interface development, including HTML5/Javascript/CSS, CesiumJS, and associated toolsets such as Angular and React.

• Experience with applying programming concepts in a professional or academic setting.

• Clearance: Must be a US Citizen able to obtain a U.S. security clearance.

Desired Qualifications.

• Experience building and supporting continuous integration pipelines (e.g. DEVOPS/DEVSECOPS) in a professional or academic setting.

• Agile Developer certification or Certified Scrum Developer certification with experience participating in and helping to lead day-to-day activities of a scrum team or other Agile software development team.  

• Experience with Big Data processing technologies such as Cassandra, Kafka, Spark, etc.

• Experience with Kubernetes, REST, Docker and containerized microservices.

• Experience in development and integration of software in an environment including multiple security domains and system-of-systems.  

• Experience with commercially available cloud computing service solutions such as Amazon Web Services (AWS). 

• Experience in development and sustainment of Linux based software development.

• Demonstrated open-source contributor.

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:

August 24, 2026

Pay Range:

Pay Range $107,900.00 - $195,050.00

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.