Jiwoo Lee¶
AI Platform Engineer II · Sanofi · Toronto, Canada
About¶
Platform Engineer specializing in Kubernetes-based AI/ML platforms and agentic infrastructure, with experience building and operating multi-region systems at enterprise scale. Proven track record delivering production-grade platform primitives, improving performance, and enabling scalable multi-agent systems.
Having worked across both AI platform and ML product teams, I've seen firsthand how critical strong infrastructure is to enabling teams to move fast. While much of the industry focuses on product development, far fewer engineers understand what it takes to run ML systems reliably in production and at scale. That gap is where I've chosen to focus my career.
I'm shaping my career as an ML Infrastructure / AI Platform engineer, building the runtime, reliability, and operational foundations that allow teams to ship safely and sustainably.
Experience¶
DevOps Engineer II — AI Platform¶
Sanofi · Mar 2025 – Present · 1 yr 4 mos
AI Foundry team operates a central AI/ML platform to accelerate the development and deployment of 950+ internal projects across AWS EKS and Tencent Cloud.
Platform Engineering:
- Proposed and leading 0→1 development of an agentic system enablement on Kubernetes Platform infrastructure with Kagents and AgentGateway, defining the next-generation interaction layer for platform operations (natural-language AIOps, automated incident response)
- Owned platform-wide Redis Sentinel caching with automatic failover, improving backend API response times by 98.3% and reducing observability query latency by 55%
- Led Bottlerocket OS migration across EKS clusters, reducing node startup time by 87% while improving security and reducing AMI/GPU driver overhead
Cross-functional:
- Contributing on the enterprise Agents Hub that enables cross-team agent registration, invocation, observability, and governance; matured data assets integration and delivered terraform modules for AWS Bedrock/AgentCore memory, guardrail, MCP, and multi-agent orchestration
- Acted as a dedicated devops partner — Openshift deployment and reduced CI/CD pipeline time by 40% for Sanofi's Data Platform chatbot
Software Engineer I — Rotational Development Program¶
Sanofi · May 2023 – Mar 2025 · 1 yr 11 mos
Built engineering foundation on core AI/ML lifecycle across AI Platform and ML product teams.
[Rotation 1] AI Platform
- Improved startup time and cost efficiency of user Jupyter notebook pods by designing Temporal workflow scheduling
- Enabled AWS infrastructure provisioning via Crossplane-based IaC on the deployment microservice
- Refactored a core deployment service end-to-end, improving scalability and reliability
[Rotation 2]: R&D — Early stage drug discovery
- Implemented EMR Serverless features including scheduling Spark jobs
[Rotation 3]: R&D — RAG LLM chatbot answering scientific queries
- Extended similarity search features and optimized RAG retrieval on ELK stack
- Architected migration from Streamlit prototype to React/FastAPI; enabled multi-user concurrent sessions and persistent chat history
Software Engineer Intern¶
Evertz · May 2021 – Aug 2022 · 1 yr 4 mos · Burlington, ON (Remote)
- Contributed to development of an enterprise Audio/Video routing and device management platform used in production environments
- Worked across web, desktop/mobile, embedded, and automation layers in a cross-functional engineering team
- Built features and test automation supporting device configuration, firmware updates, and system reliability
Education¶
B.A.Sc, Honours Computer Science Co-op¶
McMaster University · 2018 – 2023 · Hamilton, ON
GPA 3.9 · Summa Cum Laude · Dean's Honour List (2018–2023) · Faculty of Engineering Entrance Scholarship
Activities: Student mentor and ambassador for the CS program at the McMaster Engineering Society · Mac Outreach Coding Camp · Associate of Korean Canadian Scientists and Engineers · Guitar Club · Korean Christian Fellowship
Certifications¶
AWS Certified Machine Learning – Specialty
Amazon Web Services · Jan 2026 – Jan 2029
AWS Certified DevOps Engineer – Professional
Amazon Web Services · Mar 2025 – Mar 2028
AWS Certified Solutions Architect – Associate
Amazon Web Services · Dec 2024 – Dec 2027
SnowPro Associate: Platform
Snowflake · Apr 2026