Senior AI​/ML Engineer

** Description*
* Looking for an opportunity to make an impact?

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.

** Your greatest work is ahead!*
* Leidos'  
** Defense Systems,*
* ** Advanced Sensors and Protective Technologies Portfolio
** is seeking a talented  
** Senior AI/ML Engineer
** to integrate generative AI and agentic AI systems into existing software products. Working within a multidisciplinary team, this role spans the evaluation and integration of large language models (LLMs), vision-language models (VLMs), and multimodal LLMs (mLLMs), as well as the design and governance of agentic AI solutions.

The  
** Advanced Sensors and Protective Technologies
** portfolio develops and evaluates EO/IR sensor systems and protective capabilities that enhance threat detection, survivability, and mission effectiveness. This includes safeguarding mission‑critical systems through advanced microelectronic hardware assurance to ensure components remain trusted and secure. We advance sensor system technologies and hardware assurance through real‑world testing, modeling and simulation, and performance analysis to support the transition of emerging capabilities into operational systems.

** If this sounds like the kind of environment where you can thrive, keep reading!*
* ** Leidos Defense Systems Sector
** provides a diverse portfolio of systems, solutions, and services covering land, sea, air, space, and cyberspace for customers worldwide. Solutions for Defense include enterprise and mission IT, large-scale intelligence systems, command and control, geospatial and data analytics, cybersecurity, logistics, training, and intelligence analysis and operations support. Our team is solving the world's toughest security challenges for customers with "can't fail" missions.

To explore and learn more,  () !

** Are you ready to make an impact? Share your resume with us today!*
* ** Primary Responsibilities.*
* + ​ _Lead the integration of LLMs, VLMs, and mLLMs into existing software products and platforms_

+  _Design and execute fine-tuning strategies for pretrained models (LoRA, QLoRA, RLHF/DPO)_

+  _Architect agentic AI solutions: agent/skill design, MCP tool/server integrations, and multi-agent orchestration workflows_

+  _Set organizational standards for prompt engineering to optimize agent reasoning and output quality_

+  _Lead the development of test harnesses, evaluation suites, and red-teaming/adversarial testing for agentic systems prior to production release_

+  _Own end-to-end deployment and operations of agentic AI systems - CI/CD, monitoring, versioning and rollback, and lifecycle management_

+  _Collaborate with software engineers, product owners, security, and data teams to align capabilities with product and compliance requirements_

+  _Present architectures and lifecycle strategies to technical leadership and stakeholders_

** Basic Qualifications.*
* +  _Must be able and willing to obtain and maintain a DoD Secret Clearance (U.S. Citizenship required)_

+  _Bachelor's degree in Computer Science, Data Science, Machine Learning, or related field and 8+ years of experience._

+  _5+ years of relevant experience working with AI/ML, including hands-on production integration of LLMs/VLMs_

+  _Proven track record managing agentic AI systems through a full lifecycle_

+  _Strong experience with agentic frameworks and patterns (MCP, tool/function calling, etc.)_

+  _Familiarity…