Sr AI​/ML Engineer; Milwaukee, WI

Position: Sr AI/ML Engineer (Milwaukee, WI)
.Johnson Controls International (JCI) is seeking a Senior Data Scientist to join our innovative and impact-driven Data Science and Analytics team. This role is ideal for a seasoned expert with a deep understanding of machine learning, AI, and cloud data platforms, and a strong grasp of the latest advancements in Generative AI and Large Language Models (LLMs).
** What you will do
** As a Senior Data Scientist, you will lead the development and deployment of scalable AI solutions—including those powered by LLMs—to accelerate digital transformation across our products, operations, and customer experiences. You'll play a critical role in shaping JCI’s data science strategy, mentoring teams, and driving the use of AI to deliver measurable business value.
** How you will do it
** Advanced Analytics, LLMs & Modeling
* Design and implement advanced machine learning models including deep learning, time-series forecasting, recommendation engines, and LLM-based solutions (e.g., GPT, LLaMA, Claude).
* Develop use cases around enterprise search, document summarization, conversational AI, and automated knowledge retrieval using large language models.
* Fine-tune or prompt-engineer foundation models (e.g., OpenAI, Azure OpenAI, Hugging Face) for domain-specific applications.
* Evaluate and optimize LLM performance, latency, cost-effectiveness, and hallucination mitigation strategies for production use.

Data Strategy & Engineering Collaboration
* Work closely with data and ML engineering teams to integrate LLM-powered applications into scalable, secure, and reliable pipelines.
* Contribute to the development of retrieval-augmented generation (RAG) architectures using vector databases (e.g., FAISS, Azure Cognitive Search).
* Support the deployment of models using MLOps principles, ensuring robust monitoring and lifecycle management.

Business Impact & AI Strategy
* Partner with cross-functional stakeholders to identify opportunities for applying LLMs and generative AI to solve complex business challenges.
* Lead workshops or proofs-of-concept to demonstrate value of LLM use cases across business units.
* Translate complex model outputs, including those from LLMs, into clear insights and decision support tools for non-technical audiences.
** Thought Leadership & Mentorship
*** Act as an internal thought leader on AI and LLM innovation, keeping JCI at the forefront of industry advancements.
* Mentor and upskill data science team members in advanced AI techniques, including transformer models and generative AI frameworks.
* Contribute to strategic roadmaps for generative AI and model governance within the enterprise.
** What we look for
**** Qualifications & Experience
*** Education in Data Science, Artificial Intelligence, Computer Science, or related quantitative discipline.
* 5+ years of hands-on experience in data science, including at least 1–2 years working with LLMs or generative AI technologies.
* Demonstrated success in deploying machine learning and NLP solutions at scale.
* Proven experience with cloud AI platforms—especially Azure OpenAI, Azure ML, Hugging Face, or AWS Bedrock.
* Open to travel 20%
** Technical Expertise
*** Proficiency in Python and SQL, including libraries like Transformers (Hugging Face), Lang Chain, PyTorch, and Tensor Flow.
* Experience with prompt engineering, fine-tuning, and LLM orchestration tools.
* Familiarity with data storage, retrieval systems, and vector databases.
* Strong understanding of model evaluation techniques for generative AI, including factuality, relevance, and toxicity metrics.
** Leadership & Soft Skills
*** Strategic thinker with a strong ability to align AI initiatives to business goals.
* Excellent communication and storytelling skills, especially in articulating the value of LLMs and advanced analytics.
* Strong collaborator with a track record of influencing stakeholders across product, engineering, and executive teams.
** Preferred Qualifications
*** Experience with IoT, edge analytics, or smart building systems.
* Familiarity with LLMOps, Lang Chain, Semantic Kernel, or similar orchestration frameworks.
* Knowledge of data privacy and governance considerations specific to LLM usage in…