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Description

Leidos** has a new and exciting opportunity for a **Senior Software Engineer** in our **National Security Sector's (NSS) 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!

Job Summary:

Our LOE program provides our customer's Operations organization with the best possible solutions for their mission needs. We achieve this through rapid prototyping, new development, and advanced technology research. From leading-edge visualizations to analytic development, we're always pushing the boundaries to find new and better data sources and tradecraft to answer intelligence questions. With a focus on collaboration and a fast-paced environment, our prototype development program is the ideal place to grow your skills and make a real impact. Clickhere (https://careers.leidos.com/search/jobs?q=pdsii&ns\_job\_category=pdsii-jobs) to learn more about how this program “Delivers Mission Success!”

Job Responsibilities/Qualifications:

+ Write software as part of a team performing development and enhancement of complex and diverse systems for cryptanalysis and signals analysis.

+ Build/develop portions of the product, work with end user analysts to ensure you are meeting their requirements and help users with the tool as necessary.

+ Bachelor’s degree in computer science or related field, plus eleven (11) plus years of relevant experience or master’s degree plus nine (9) years of relevant experience. An associate’s degree plus thirteen (13) years of relevant experience or high school diploma/GED plus fifteen (15) years of relevant experience may be considered for individuals with in-depth experience that is clearly related to the position

+ Expertise in building and deploying software on Linux systems across multiple operating systems (i.e. CentOS7, RedHat 8, Rocky 9)

+ Mastery of C++ standards (up to C++23) including advanced features; additional expertise in debugging and optimizing C++ systems for efficiency and resource utilization with tools such as valgrind

+ Experience in managing git repositories, including the ability to create, rebase, and merge branches, as well as configure automated compiling and deployment of software tools

+ Ability to cross-compile and resolve platform-specific issues using tools like GCC, Clang, etc.

+ Work independently to design complex software routines, handle inter-process communications, design unit tests, and generate user and developer documentation

**Security Clearance Requirement** :

+ Candidates must possess an active TS/SCI with Polygraph to be considered for this role.

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 – apply today!

Careers.leidos.com

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At Leidos, we don’t want someone who "fits the mold"—we want someone who melts it down and builds something better. This is a role for the restless, the over-caffeinated, the ones who ask, “what’s next?” before the dust settles on “what’s now.”

If you’re already scheming step 20 while everyone else is still debating step 2… good. You’ll fit right in.

Original Posting:

August 27, 2025

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 $126,100.00 - $227,950.00

The Leidos pay range for this job level is a general guideline onlyand 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.

REQNUMBER: R-00165509

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. Leidos will consider qualified applicants with criminal histories for employment in accordance with relevant Laws. Leidos is an equal opportunity employer/disability/vet.