Senior SW Developer at Leidos in Chantilly, VA

Leidos is seeking a Software Developer for a 200+ FTE technical development program supporting the Sponsor’s Entitlement Programs as well as IdAM /ICAM, Authentication, Authorization, Attributes and Digital Policy Management. The Software Developer will work with a large team of developers, software engineers, and data engineers.

Primary Responsibilities:

Develop Java and/or Python applications that leverages Large Language Model (LLM) API calls

Utilized Scrum agile techniques to manage workload and incrementally build out applications to meet customer requirements

Leverage Amazon Web Services

Experience creating RESTful API

Required Qualifications:

Active TS/SCI with Polygraph

BS degree and 12+ years of relevant experience. Additional experience in lieu of degree.

Hands-on development experience in object oriented programming languages like Java, Python, Kotlin, Go, Ruby etc.

Experience with defining system architectures and design of new features

Prior experience developing solutions to customer requirements

Knowledge of Git, Jenkins, or Rundeck

Desired Qualifications:

Exposure to foundation AI models such as GPT

Familiarity with AI topics and concepts such as prompt engineering

Experience with AI libraries such as LangChain or others

Understanding of Identity Access Management (IAM) Concepts

Experience with design patterns and best practices

Experience building microservices

Experience with integration testing frameworks

Documented open source contributions, technical certifications, continued education

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 25, 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 $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.