Paul Mestemaker is a founder-CTO and hands-on engineering leader with 11+ years building AI/ML systems, startups, and developer teams from incubation to production. Based in Los Angeles/Santa Monica, he currently focuses on LLM tooling—optimizing vector-search pipelines for meeting recall, building self-hostable offline models for privacy, and training RL agents—while running Eluve, an AI assistant for medical professionals. He mixes product leadership and execution as a fractional CTO/CPO through CleverPoint, assembling distributed engineering teams across Ukraine, Thailand, Costa Rica, and Mexico to rapidly prototype and validate MVPs. A former Microsoft senior PM, he led incubation for System Center Advisor and built internal BI used company-wide, demonstrating a data-driven approach to product decisions. Paul is an active polyglot developer (Python, TypeScript, SQL) and open-source contributor who has improved real-world projects like the popular coinbasepro-python client, reflecting a commitment to maintainability and performance. He also brings uncommon experience in usability studies, public speaking, and academia, helping teams translate research and feedback into measurable product impact.
11 years of coding experience
18 years of employment as a software developer
Finance Business Information Technology Corporate Strategy and International Business, Finance Business Information Technology Corporate Strategy and International Business at University of Michigan - Stephen M. Ross School of Business
The unofficial Python client for the Coinbase Pro API
Role in this project:
Back-end Developer
Contributions:5 commits, 7 PRs, 8 comments in 3 months
Contributions summary:Paul primarily focused on improving the codebase's maintainability, performance, and stability. Their contributions include implementing Python 3.6 compatibility, adhering to PEP8 style guidelines, and improving code structure by preventing default mutable argument problems and defining instance variables in `__init__`. Furthermore, the user fixed a `KeyError` in the order book logic, adding comments, logging, and minor formatting improvements. They also introduced a new class, `OrderBookConsole`, for logging real-time changes to the bid-ask spread.
Contributions:4 PRs, 2 pushes, 1 branch in 4 years 5 months
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