The Opportunity: The Staff AI/ML Engineer (LLMs) will lead the development of Agentic AI capabilities and other LLM based capabilities for a multitude of mission management applications.
Responsibilities:
Lead and mentor a multidisciplined team consisting of developers and researchers to implement machine learning algorithms to solve a broad set of challenges for our various customers
Lead and mentor a multidisciplinary team delivering advanced AI/ML solutions
Apply LLMs to complex domain-specific problems and operational workflows
Adapt and fine-tune foundation models for specialized use cases
Design and implement retrieval-augmented generation (RAG) systems and semantic search architectures
Build production-grade LLM applications and agentic systems
Deploy scalable AI solutions across cloud, on-prem, and hybrid environments
Analyze large, multi-modal datasets to extract meaningful features and actionable insights
Translate emerging research into applied, mission-relevant capabilities
Communicate technical strategy, status, and risks to internal and external leadership
Qualifications: Required:
B.S. in machine learning, computer science, mathematics, or related fields
8+ years of experience, preferably in software development or as a data scientist with 2+ years of building LLM applications using some of the following:
Fine-tuning foundational models
Steering Techniques (e.g Sparse auto encoders, representation tuning)
Building adapters to use foundational models (e.g. PEFT, llama factory)
Prompt engineering techniques / Inference time techniques (e.g. chain of thought, tree of thoughts, etc.)
Using Retrieval Augmented Generation techniques to populate and query vector databases (e.g. Weaviate, pinecone, pgvector)
Using LLM Frameworks (e.g. LangChain, DSPy, Microsoft Agent Framework)
Using AI APIs ( e.g AWS Bedrock, OpenAI)
Using LLM deployment frameworks (eg llama.cpp, vllm, tgi)
Developing UIs with ReAct
Experience leading an interdisciplinary team of researchers and software developers and working with a program manager to define project scope and schedule to ensure we meet project milestones as defined by our customers
Experience with Python and data science / machine learning libraries (e.g. NumPy, Pandas, Polars, scikit-learn, etc.)
Experience contributing on a team using version control (e.g. git, GitLab, Bitbucket)
Active TS/SCI U.S. Government Security Clearance
Desired:
M.S. or PhD in machine learning, computer science, mathematics, or related fields
Experience leading an interdisciplinary team of researchers and software developers
Experience with any of the following:
Large Language Models and experience identifying ways to incorporate them into new domains and applications
Applying Transformer-based architectures to domains in other areas outside of Natural Language Processing (NLP) such as computer vision
Natural Language Processing algorithms such as BERT
Reinforcement learning and familiarity with Gymnasium Gym, OpenEnv, TorchRL, RLlib, and Stable Baselines
Applying clustering algorithms and/or deep neural networks to real life problems
Implementing tracking and pattern-of-life algorithms
Experience with GenAI Ops techniques (e.g. LLM-as-a-judge) and frameworks (e.g. LangFuse, MLFlow, Arize Phoenix)
Experience with Machine Learning libraries and frameworks such as HuggingFace and LangChain
Experience with Linux
Experience with CUDA and Python libraries such as CuPy, Numba, CuSignal, CuDF, etc.
Familiarity with using AWS cloud computing resources such as EC2, S3, Lambda, etc.
Experience with any of the following additional languages: Java, C++, Rust, Go, and/or C#
Experience in application deployment, virtualization, and containerization (e.g. Podman, Docker, Kubernetes, Rancher)
Experience shaping and writing proposals
Adjudicated Counter Intelligence or Full Scope Polygraph
What You Can Expect:
A culture of integrity.
At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.
An environment of trust.
CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.
A focus on continuous growth.
Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.
Pay Range:
There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.
The proposed salary range for this position is:
$108,400 - 227,500 USD
CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.
