Principal Hardware Software Engineer

Leidos Principal Hardware/Software Design Engineer – Intelligence Sector Leidos has a new and exciting opportunity for a Principal Hardware/Software Design Engineer in our Intelligence Sector. Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. We offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security! Job Summary Our program provides our customer's Signals Analysis organization with the best possible solutions for their mission needs. We achieve this through rapid prototyping, new development, and advanced technology research. From leading-edge visualizations to analytic development, we're always pushing the boundaries to find new and better data sources and tradecraft to answer intelligence questions. With a focus on collaboration and a fast-paced environment, our prototype development program is the ideal place to grow your skills and make a real impact. Seeking an experienced Principal HW/SW Design Engineer to join a small team to design, develop, construct, and test electronic hardware (FPGA) and software processing components for subsystems supporting RF communication and collection systems. This position requires expertise in FPGA development, digital signal processing implementation, and software-hardware integration to support mission critical requirements. The contractor will lead technical design efforts, implement DSP algorithms and associated technical components in FPGA hardware, integrate with existing Linux code bases, bridge FPGA to software stack connection, plus document those efforts. This role combines hardware design responsibilities (FPGA RTL development, timing closure, resource optimization) with software development (integration code, system-level software) to deliver complete subsystem solutions. Qualified candidates are eligible for enhanced incentives including up to a $25K cash sign on bonus or a paid time off bonus. Job Responsibilities/Qualifications Mission Focus: Candidate is expected to implement DSP and associated technical components in FPGA for code base integration. Technical Proficiency: Strong experience required for FPGA coding, Digital Signal Processing theory & application, Interfacing FPGA code with existing code bases and software; Knowledge of signal processing blocks and related DSP components, Linux OS, coding ability in C and C++. Qualifications: Bachelor's degree plus 8 years of relevant experience or equivalent. Security Clearance: Candidates must possess an active TS/SCI with Polygraph to be considered for this role. Desirable Skills: Additional experience with Vivado required; experience with Epiq Solution PDK preferred. Benefits Paid Time Off 11 paid Holidays 401K with a 6% company match and immediate vesting Flexible Schedules Discounted Stock Purchase Plans Technical Upskilling Education and Training Support Parental Paid Leave and much more Pay Range Pay Range $154,050.00 - $278,475.00 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. Company Overview 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. #J-18808-Ljbffr Leidos LLC