Senior Signals Software Engineer
Leidos
About the role
Leidos has a new and exciting opportunity for a Senior Signals Software Engineer in our Intel Sectors, Cyber & Analytics Business Area (CABA). 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. At Leidos, 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!
Position is eligible for a $25,000 sign on bonus.
Primary Responsibilities:
Analyze user requirements to derive software design and performance specifications.
Design, develop, and enhance software to add new features or improve existing functionality.
Debug and resolve defects in software systems.
Utilize signal processing techniques and digital modulation methods effectively.
Develop software using C++ and Java within Linux operating systems.
Integrate software into new or modified systems, ensuring seamless operation.
Lead or participate in the development and execution of test procedures for software components.
Write and review software and system documentation, providing recommendations to improve processes and standards.
Apply scientific analysis and mathematical models to design software solutions and predict outcomes.
Basic Qualifications:
Masters or Bachelors degree in Computer Science or related discipline from an accredited college or university is required with 15 or more years of experience. Seven (7) years of additional SSWE or equivalent experience on projects with similar software processes may be substituted for a bachelor’s degree.
Seven (7) years’ experience as a SSWE or equivalent on a project with a focus on Radio Frequency (RF) to include experience with Fourier transforms, filtering, communications theory, digital modulation, error control coding, signals analysis tools (e.g. WVT, DVT), and digital signal processing (e.g. adaptive beamforming/ filtering, demodulation).
Clearance Requirement: Active TS/SCI with polygraph
Preferred Qualifications:
Experience with software-defined radio architectures (e.g., SCA, REDHAWK, GNU) and commercial wireless standards.
Proficiency in software configuration management tools (e.g., GIT, Trac, Subversion).
Familiarity with Python, Eclipse IDE, Google Protocol Buffer, and model-based design tools like MATLAB or SIMULINK.
Knowledge of service-oriented architecture, Kubernetes, Docker, and cloud deployment (e.g., AWS).
Expertise in front-end technologies such as JavaScript, TypeScript, HTML, and CSS, including libraries like React, Vue, or Angular.
Experience working with REST APIs, WebSockets, and JavaScript 3D libraries (e.g.,Three.is a plus).
Background in Agile development teams and geolocation techniques.
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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:
October 29, 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 $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.
Responsibilities
- Analyze requirements and derive software designs and performance specifications.
- Develop, enhance, debug, and integrate software using C++ and Java on Linux.
- Apply signal processing, digital modulation, scientific analysis, and mathematical modeling.
- Develop and execute software component test procedures.
- Write and review software and system documentation and recommend process improvements.
Qualifications
- Bachelor's or master's degree in computer science or a related discipline and 15 or more years of experience; seven additional years of equivalent project experience may substitute for a bachelor's degree.
- Seven years of SSWE or equivalent experience on a project focused on radio frequency, including signal processing, communications theory, digital modulation, and signals analysis.
- Active TS/SCI clearance with polygraph.
- Preferred experience with software-defined radio architectures, wireless standards, configuration management, Python, cloud technologies, web development, APIs, and Agile teams.
Benefits
- $25,000 sign-on bonus
- Paid time off and 11 paid holidays
- 401(k) with 6% company match and immediate vesting
- Flexible schedules and discounted stock purchase plans
- Technical upskilling, education, and training support
- Paid parental leave
Skills mentioned
About Leidos
Leidos is an industry and technology leader serving government & 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. Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®. Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos. Your most important work is ahead, visit careers.leidos.com for our latest opportunities.
H-1B sponsorship history
Historical employer filing data was found for Leidos. The employer record includes 364 historical certified applications. This is employer-level history, not a guarantee that this role currently offers sponsorship.