Software / Embedded Systems Engineer

General program information and/or position overview: Leidos’ Undersea Systems Division is seeking a Software / Embedded Systems Engineer in San Diego, CA to join a fast-paced R&D engineering group. This role is a unique opportunity to drive innovation in underwater vehicle systems, maritime sensors, subsea telemetry, and ISR solutions that support critical defense and national security missions at Naval Information Warfare Center, Pacific (NIWC PAC). Leidos’ USD is a recognized leader in C4ISR technologies, delivering innovative, mission-critical solutions across sensor networks, unmanned systems, and tactical platforms. We’re known for achieving “industry firsts” in the most challenging maritime domains. Join us and be part of a world-class team delivering unmatched solutions for today's most pressing maritime missions. This position will require the candidate to maintain a Secret Clearance. This position will require the candidate to work a 9/80B schedule (80 hours of work into nine days over a two-week period, allowing for every other Friday off) onsite at NIWC to align with the NIWC government team. Primary Responsibilities: This individual will work with a small team of engineers and technicians to develop, test, and deliver uncrewed underwater vehicles (UUVs) based on system requirements. Specific development includes software related to operations of UUVs as well as sensor integration. Embedded systems focus: Firmware Development Designing, coding, and debugging system software in C/C++. Writing device drivers and implementing communication protocols like SPI, I2C, and UART Hardware Integration Collaborating with teams to select components (microcontrollers, sensors) and ensuring firmware operates on the physical board System Optimization Analyzing and enhancing the efficiency, stability, and scalability of system resources. DevOps & Validation Managing project documents using automation tools and implementing regression tests Documentation Maintaining code comments, design specifications, and test reports throughout project's progression Hardware development focus: Design & Architecture Creating detailed schematics and blueprints for computer systems, circuit boards (PCBs), and processors. This often involves selecting specific components like sensors, memory devices, and power management units Prototyping Building physical models of new hardware to prove concepts. This can include hands-on tasks like soldering components to boards in a lab setting Testing & Validation Using laboratory tools such as oscilloscopes, logic analyzers, and multimeters to verify that the physical hardware meets performance and safety specifications Manufacturing Oversight Supervising the assembly process for newly designed. Soliciting quotes and overseeing 3rd party PCB/PCBA fabricators System Maintenance Modifying existing hardware designs to improve performance or to ensure compatibility with new software updates Testing involves working onboard small boats and ships on the ocean, launching and recovering systems at-sea, and post-test analysis of data. Reporting includes providing results from post-test data analysis into official reports or briefing material. Most development and testing will be conducted in San Diego; however, engineers may occasionally travel in support of testing and/or operations in other locations both in the U.S. and abroad and may spend multiple days at-sea onboard ships. In addition to primary duties, this individual will be encouraged to develop expertise on the functionality and operations of one or more UUV platforms and may be asked to operate the system at-sea during test and evaluation. Basic Qualifications: This position requires U.S. citizenship. Existing security clearance is highly desired. Active SECRET (or higher) clearance is required. Bachelor of Science (+4 years of relevant experience) or Master of Science (+2 years of relevant experience) in Computer Science or Electrical Engineering. Must be flexible and responsive to customer needs. Requires frequent movement around piers, docks, and facility spaces. Required to transport or lift objects weighing up to 50 pounds across the facility. Requires constant use of hands/fingers to operate machinery, tools, or computer equipment. Requires ability to move about the warehouse, stoop, kneel, or reach for extended periods. Ability to climb ladders up to 20 feet. Requires work in various temperatures and inclement weather. Preferred Qualifications: Candidates should possess a large subset of the following: Embedded systems: electronic hardware implementation/testing and software programming Basic Linux operation Experience with Embedded Linux board bring-up, bootloaders (U-boot), and build systems (Yocto) Experience with Embedded Linux driver development Embedded RTOS Experience (freeRTOS) Language programming fluency C/C++ Python GIT workflow Programming experience with: Digital Signal Processing Field-Programmable Gate Arrays Microcontrollers Real-time programming Experience with robotics applications. Linear and non-linear controls theory and application. Applicant shall have experience working in teams to develop solutions, deliver products, and test and evaluate performance. Applicant shall have experience and skill analyzing experiment data to determine results as feedback into the development cycle. Applicant shall have strong technical writing skills to provide input to technical reports and briefing material. An ideal candidate would have experience with uncrewed underwater vehicle (UUV) operations, including experience with sensor integration, mission constructs, and command and control. Experience with at-sea test and evaluation (T&E) to include operations onboard small craft and large ships at sea is desired. A willingness to conduct such testing is required. SUBSEAMSS 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: June 25, 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 $87,100.00 - $157,450.00 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. Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. 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 Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to View email address on click.appcast.io. Commitment and 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.