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Leidos

Principal Software Engineer (SWE-4)

Leidos, Fort George Meade, Maryland, United States

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Description

Leidos

has a new and exciting opportunity for a

Principal 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!"

Seeking a motivated analytic developer to support the Access Discovery & Tradecraft mission. The Developer will work on a small team supporting a critical and widely used tool, interacting with analysts and making enhancements in nearly real time. Will work full stack development, with the ability to focus on specific functions.

Job Responsibilities/Qualifications:

Qualifications

: Bachelor's degree in computer science or related technical field plus a minimum of eleven (11) plus years of relevant experience or equivalent.

Strong Java and/Kotlin development experience.

Experience designing, developing, and implementing full stack development.

Experience with JavaScript or Typescript as well as MongoDB and Elasticsearch.

Experience with modern web UI frameworks such as Angular, Vue, React or Ember

API development experience.

Familiarity with streaming/event-based architecture (Apache Spark, Apache Flink).

Familiarity with NiFi

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

conmd

If you're looking for comfort, keep scrolling. 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.

Original Posting:

September 24, 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-00167373

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.