Senior Principal Data Scientist / AI-ML SME (Analytic Superiorit

R-00187453





The Leidos Intel Sector is looking for a premier AI/ML Subject Matter Expert (SME) to serve as a  for our COSS 3.0 program supporting USCYBERCOM and the Cyber National Mission Force (CNMF) at Fort Meade, MD. In this elite role, you will architect and engineer the cross-platform AI frameworks required to achieve absolute analytic superiority.

You will compress both defensive cyber operations (identifying network vulnerabilities and gaps) and offensive operations (vulnerability discovery and automated targeting) from days down to minutes. As a Technical Closer, you will mentor senior technologists by example—working "fingers-on-keyboard" to solve the command's most complex technical roadblocks and pushing production-grade AI directly into multi-cloud, hybrid, and air-gapped mission enclaves. 

• : Architect, deploy, and scale distributed AI workloads across any environment required, including AWS SageMaker , Google Vertex AI, Azure Government , and bare-metal, air-gapped server racks.
  
• : Deploy and optimize tools like LangGraph , CrewAI, or AutoGPT to automate cyber threat identification and offensive target generation at wire speed.
  
• : Fine-tune open-source large language models (e.g., Llama 3, Mistral) inside secure enclaves using PyTorch or TensorFlow. Utilize NVIDIA TensorRT, Triton Inference Server, vLLM, and quantization libraries (bitsandbytes) to compress models for high-throughput execution under strict hardware constraints.
  
• : Direct the engineering of enterprise Retrieval-Augmented Generation (RAG) stacks using LangChain  paired with high-performance vector databases like Milvus, Qdrant, or Pinecone.
  
• : Connect intelligent agents directly into security orchestration platforms (e.g., Palo Alto Cortex XSIAM/XSOAR) to trigger automated network defense actions and ingest massive, real-time PCAP and telemetry streams via Apache Kafka/Spark.
  
• : Demonstrate engineering mastery in Python, Go, Rust, and C/C++ to build ultra-fast cyber tools, write optimized GPU kernels, and interface with distributed frameworks like Ray.
  

• : Proven capability to support both  (log parsing, behavioral threat hunting, anomaly detection) and  (automated vulnerability discovery, exploit generation, payload optimization).
  
• : Experience integrating custom AI/ML pipelines into unified mission systems and high-value data streams found across Project Maven, Palantir Foundry, and tactical command frameworks.
  

• : 15+ years of hands-on experience in software engineering, data science, or distributed systems.
  
• : 5+ years of specialized experience in Machine Learning Engineering, deep learning, or LLM optimization.
  
• : 3–5 years working within the DoD/IC cyber ecosystem, specifically building tools that map vulnerabilities or accelerate targeting cycles.
  
• : Active .
  
• : On-site at Fort Meade, MD (SCIF environment). 
  

• : Google Cloud Professional Machine Learning Engineer , AWS Certified Machine Learning – Specialty, or NVIDIA Generative AI/LLM Associate.
  
• : Prior certification as a CMF Exploitation Analyst (EA), Digital Network Analyst (DNA), or specialized technical experience as an Army 17A/170A, Navy 181X, or Air Force 17D/17S.
  

• : Master’s Degree or PhD in Data Science, Artificial Intelligence, Computer Science, Mathematics, or a related quantitative field. Additional years of experience may be considered in lieu of degree.
  

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.
July 16, 2026

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 $154,050.00 - $278,475.00

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.



Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com .



Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits .



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