Principal 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 15 years of experience. 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).
  
  Seven (7) years of additional SSWE or equivalent experience on projects with similar software processes may be substituted for a bachelor’s degree.

• 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.js is a plus).

• Background in Agile development teams and geolocation techniques.

All postings include standard security and compliance considerations. This position requires an active TS/SCI clearance with polygraph.

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 Range $ - $

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 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.

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, nor will Leidos ever advance money as part of the hiring process. Leidos will only communicate with you through emails generated by the  automated system. If you receive any suspicious email, please contact

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, disability, pregnancy, family structure, marital status, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories in accordance with relevant laws.