David Fant
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolDavid Fant is a founder and hands-on software engineer with 10 years of experience building high-growth consumer and developer products from the ground up. Based in San Francisco, he launched Godmode — an AI agent product that reached over 1M users and completed 15M tasks in its first two months — and previously co-founded Dework, a crypto bounty platform that paid out $2M+ and exited in 2024. Early roles include first engineer at Coast App and CTO of Just Football, where he shipped AR gameplay and trained custom CNNs for state-of-the-art ball tracking. He contributes to open-source AI tooling, improving core LangChainJS retrievers, parsers, and OpenAI integration robustness. Pragmatic and product-focused, he combines deep backend engineering with a track record of scaling user-facing systems and automating repetitive work via AI employees.
10 years of coding experience
9 years of employment as a software developer
ABB Industrigymnasium
Github Skills (10)
typescript10
javascript10
typescripts10
openai10
langchain10
typescript-types10
caching9
api8
nodejs8
apidoc8
Programming languages (11)
Github contributions (5)
langchain-ai/langchainjs
Dec 2023 - Jun 2024
The agent engineering platform
Role in this project:
Back-end Developer
Back-end DeveloperContributions:10 reviews, 12 PRs, 28 comments in 5 months
Contributions summary:David primarily contributed to the core functionality and internal workings of the LangchainJS library. They focused on improving and refining the `BaseRetriever` and `OutputFixingParser`, as well as debugging caching issues. The user's work included adding generics, propagating callbacks, and optimizing the handling of function call arguments in OpenAI integrations. These contributions indicate a focus on improving the library's internal structure, error handling, and performance.
davidfant/terminal-x
Sep 2021 - Sep 2021
Contributions:27 commits, 15 pushes, 1 branch in 6 days
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