Senior Signals Software Engineer

Description

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.

• 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.

• Bachelor's degree in Computer Science or related discipline from an accredited college or university is required with 12 years of experience. Four (4) years of additional SSWE or equivalent experience on projects with similar software processes may be substituted for a bachelor's degree.

• Seven (7) or more 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

• 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, Type Script, HTML, and CSS, including libraries like React, Vue, or Angular.

• Experience working with REST APIs, Web Sockets, and JavaScript 3D libraries (e.g.,Three.is a plus).

• Background in Agile development teams and geolocation techniques.

Original Posting:
March 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: $ - $

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 $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit

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 at

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,…