Senior Signals Software Engineer - 25k Sign on Bonus

00100 LEIDOS, INC.; Columbia (MD); On-site; USD 131,000 - 237,000; Full time

Benefits offered by this job

Sign-on bonus

401K with company match

Paid time off & holidays

Job summary

Leidos is seeking a Senior Signals Software Engineer to design, develop, and integrate software for SIGINT and cryptographic key management, with strong RF and signal processing background. The role requires C++ and Java under Linux, plus experience delivering testable software in a secure environment.

Active TS/SCI with polygraph is required. The posting notes a $25,000 sign-on bonus and competitive benefits, including retirement plans and education support.

Qualifications

• Bachelor’s degree in Computer Science or related discipline with 12+ years of experience, or 7 additional SSWE or equivalent experience substituted for degree.
• Experience on projects with RF focus including Fourier transforms, filtering, communications theory, digital modulation, error control coding, and signal analysis tools.

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.

Skills

C++

Java

Signal processing

Fourier transforms

Digital modulation

RF concepts

Mathematical modeling

Education

Bachelor’s degree in Computer Science or related discipline

Tools

GIT

Trac

Subversion

Python

MATLAB/SIMULINK

Job description

Position Summary

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

• Bachelor’s degree in Computer Science or related discipline from an accredited college or university is required with 12 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.

Company and Culture

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.

Posting Information

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: $131,300.00 - $237,350.00. 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 www.Leidos.com.

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.

Security & Data Protection

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 [e-mail].

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.