Senior Software Engineer (SWE-4)

Leidos LLC; Fort Meade (MD); On-site; USD 108,000 - 195,000; Full time

Benefits offered by this job

Paid Time Off

11 paid Holidays

401K with 6% match

Flexible Schedules

Discounted Stock Purchase Plans

Education and Training Support

Parental Paid Leave

Job summary

Leidos is seeking a Senior Software Engineer to develop scalable analytics in support of the Joint Cyber Weapons program for the USMC. Work with engineers and end users to research and build software products that exploit adversary tech, optimize algorithms, and author scripts.

Required TS/SCI with Poly, a technical degree, and strong skills in C, C++, Python, Java, and scripting across Windows, Linux/Unix, Android, and iOS. CI/CD experience and tool familiarity are essential.

Qualifications

• Bachelor's degree in a technical discipline and 8–12 years of software development experience.
• Active TS/SCI with Polygraph clearance is required.
• Experience with multiple programming languages and end-to-end software engineering.

Responsibilities

• Develop, integrate, test, and deploy tools and tradecraft for the Marine Corps cyber program.
• Create analytics at scale and optimize algorithms, scripts, and utility software.

Skills

C

C++

Python

Java

JavaScript

Bash

CI/CD

Git

GDB

Ghidra

Education

Bachelor's degree in a technical discipline

Tools

Visual Studio

Git

SCons

GDB

Valgrind

LLDB

IDA Pro

Ghidra

Job description

Leidos has a new and exciting opportunity for a Senior Software Engineer in our Intel 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. 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! Job Summary: Seeking an experienced software developer to create custom analytics to perform at scale, supporting requirements for the Joint Cyber Weapons (JCW) program for the United States Marine Corps. The software engineer will work closely with engineers and end users to support in research and development of software products designed to exploit vulnerabilities of adversary technology, develop and optimize algorithms, author scripts and develop utility software.

Job Responsibilities / Qualifications

• Mission Focus: Work directly with Marine Corps Forces Cyberspace Command (MFCC), the Cyber Mission Force (CMF), as well as software engineers to solve the most demanding strategic problems; perform end-to-end software engineering to develop, integrate, test, and deploy tools and tradecraft into the customer’s corporate architecture.
• Technical Proficiency: Strong development experience with multiple programming languages (C, C++, Python, Java, JavaScript, Bash/Bourne/C Shell, Rust and Assembly). Candidate will have demonstrated experience writing, testing and refining code with the various programming languages. Demonstrated knowledge with various operating systems (Windows, Linux/Unix, Android, and iOS). Experience with establishing and maintaining CI/CD mechanisms in accordance with industry best practices. Experience with software planning; defining project scope, goals and timelines.

Qualifications

• Bachelor's degree in a technical discipline plus eight (8) to twelve (12) years of relevant software development experience.
• Security Clearance: Must possess an active TS/SCI with Polygraph to be considered for this role.

Desirable Skills

• Knowledge of CNO and experience with development tools such as Visual Studio and Git.
• Additional experience with Cloud computing platforms such as AWS, Microsoft Azure, and Google Cloud.
• Be familiar with and capable of learning various development tools, to include but not limited to Gnu Debugger (GDB), Valgrind, Low Level Debugger (LLDB), Interactive Disassembler (IDA) Pro, Ghidra, SCons.

At Leidos, the opportunities are boundless. We challenge our staff with interesting assignments that allow them to thrive professionally and personally. For us, helping you grow your career is good business. We look forward to learning more about you.

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 $107,900.00 - $195,050.00 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.

Leidos

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.

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 [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.