Leidos is seeking a Senior AI Engineer for its Intel Sector to support an AI and Emerging Technologies mission. The role focuses on building and integrating AI and ML tooling, including fine-tuning Large Language Models (LLMs), to strengthen vulnerability identification and mitigation capabilities, alongside LLM orchestration and RAG-related development.
Location
Linthicum Heights, MD (onsite)
Compensation
USD 107,900 - 195,050 per year
Role Responsibilities
- Collaborate with technical leadership to design, develop, and maintain LLM orchestration frameworks that coordinate static analyzers, retrieval-augmented generation (RAG) systems, and automated testing pipelines.
- Develop and optimize data preprocessing pipelines to ingest, clean, transform, and vectorize product documentation, source code, and test results for LLM consumption.
- Design and implement database solutions to support RAG architectures, artifact storage, audit trails, and metadata management.
- Work with systems engineers to architect and deploy networked AI tools within secure enclaves, including performance profiling, optimization, and scalability analysis of mission systems.
- Support security assessments and authority to operate (ATO) processes.
- Use AI/ML to develop tools and techniques involving fine-tuning LLMs to support enhanced vulnerability identification and mitigation.
Required Qualifications
- Bachelor's degree plus eight (8) years of relevant experience, or equivalent.
- Proficiency in Python, LLM integration, and data engineering.
- Experience with static analyzers, RAG frameworks, and both relational and vector databases.
- Familiarity with Agile, Git, Jira, and Confluence.
- Active TS/SCI with Polygraph required.
Technologies
- Artificial Intelligence/Machine Learning (AI/ML)
- Python
- Large Language Models (LLM)
- LLM orchestration frameworks
- Retrieval-augmented generation (RAG)
- Static analyzers
- Vector databases
- Relational databases
- Database solutions
- Agile, Git, Jira, Confluence
- RUST, Claude Code, Codex
- CI/CD
Benefits
- 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
- competitive benefits
Additional Information
- Posted: March 11, 2026
- Pay Range: $107,900.00 - $195,050.00
- Security Clearance: Active TS/SCI with Polygraph required
- Desirable Skills: Familiarization with RUST, Claude Code, Codex, and CI/CD
Security and Fraud Warning
- Beware of fake employment opportunities using Leidos' name.
- Leidos will never ask you to provide payment-related information during any part of the employment application process, and will not advance money as part of the hiring process.
- Leidos will only communicate through emails generated by the Leidos.com automated system and will not use free commercial services (e.g., Gmail, Yahoo, Hotmail) or messaging tools such as WhatsApp or Telegram.
- If you receive an email purporting to be from Leidos that requests payment-related or personal information, contact LeidosCareersFraud@leidos.com.
- If you believe you are a victim of a scam, contact local law enforcement and report to the U.S. Federal Trade Commission.
Commitment to Non-Discrimination
Leidos will provide consideration for employment to qualified applicants 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 qualified applicants with criminal histories consistent with relevant laws.
