Rachel Black
Founding Developer Evangelist at Cosine
London, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolRachel Black is a founding developer evangelist and former founder with 11 years of experience turning blockchain and developer-focused ideas into shipped products and engaged communities. She co-founded HaloFi, growing it to 4k monthly active users and helping the community save over $5M in stable tokens, and has repeatedly been an early adopter and advocate for Celo, Polygon and DeFi stacks. Her background spans full-stack development, developer relations, fundraising and 0→1 product creation across startups and platform companies like Twilio and Concordium. Comfortable building multicultural teams and technical content, she translates complex crypto primitives into accessible developer experiences and integrations. Based in London, she combines hands-on engineering roots with proven community growth instincts and a knack for finding platform-product fit in emerging ecosystems.
11 years of coding experience
9 years of employment as a software developer
Bachelor’s Degree, Geography, Bachelor’s Degree, Geography at University of CambridgeWoodhouse College
Stackoverflow
346reputation
3kreached
2answers
3questions
Github Skills (95)
windows10
javascript10
linux10
js10
nodejs10
sdk9
nextjs9
blockchain9
jekyll-theme9
ethereum9
react9
jekyll9
rocket9
typescript9
macos9
Programming languages (8)
Github contributions (5)
RachBLondon/rachblondon.github.io
Sep 2015 - Aug 2022
Contributions:10 PRs, 25 pushes, 13 branches in 6 years 11 months
jekyll
dgt-nft/art-engine
Aug 2022 - Aug 2022
Contributions:5 reviews, 26 commits, 10 PRs in 1 day
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