Senior AI Engineer

Leidos; Linthicum (MD); On-site; USD 108,000 - 195,000; Full time

Benefits offered by this job

11 paid Holidays

401K with 6% company match

Paid Time Off

Flexible Schedules

Discounted Stock Purchase Plans

Technical Upskilling

Education and Training Support

Parental Paid Leave

Job summary

Leidos is seeking a Senior AI Engineer in Linthicum Heights, MD, onsite. You will design LLM orchestration frameworks, build data pipelines and databases for RAG architectures, and deploy AI tools in secure enclaves to support vulnerability identification.

You will work with leadership to implement automated testing, SIEM-ready pipelines, and ATO processes, applying LLM fine-tuning to strengthen mission capabilities.

Qualifications

• Bachelor's degree plus eight years of relevant experience or equivalent.
• Strong Python, LLM integration and data engineering capabilities.
• Experience with static analyzers, RAG workflows and both relational and vector databases.
• Familiarity with Agile, Git, Jira and Confluence; TS/SCI with Polygraph required.

Responsibilities

• Design, develop and maintain LLM orchestration frameworks coordinating analyzers, RAG systems and tests.
• Build and optimize data preprocessing pipelines to ingest and vectorize documents for LLMs.
• Create database solutions to support RAG, storage, and audit trails.
• Collaborate with systems engineers to deploy AI tools in secure enclaves with performance tuning.
• Support security assessments and ATO processes.
• Leverage AI/ML to fine-tune LLMs for vulnerability identification and mitigation.

Skills

Python

LLM integration

Data engineering

Agile

Git

Jira

Confluence

TS/SCI with Polygraph

Education

Bachelor's degree

Tools

Static analyzers

RAG frameworks

Relational databases

Vector databases

CI/CD

Claude Code

Codex

Job description

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

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.