Raphael Huefner
Senior Software Engineer - Developer Experience & Public API Team at Freelancer
Berlin, Germany
Summary
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SeniorRaphael Huefner is a senior software engineer with 15+ years’ experience specialising in API design and developer experience, currently shaping public APIs and DX at Upvest from Berlin. He bridges product and engineering by mediating between API providers and external consumers to produce APIs that are technically robust, developer-friendly, and business-aligned. Comfortable across JavaScript/TypeScript, Python, and Go, he introduced API governance at Upvest and built automation to keep specs and docs in sync, saving teams hours and reducing errors. His background ranges from blockchain APIs and Ethereum development to long-term freelance and Drupal work, giving him a pragmatic, cross-domain view of developer workflows. Pragmatic and decisive in design discussions, he helps teams reach decisions without getting stuck and is seeking senior or staff roles to influence API strategy and developer productivity.
15 years of coding experience
18 years of employment as a software developer
English, German
Stackoverflow
81reputation
10kreached
1answer
0questions
Github Skills (44)
debugging10
side-by-side10
remix-ide10
solidity9
blockchain9
js-api9
ethereum9
remix9
changelog9
rest-api9
cpp9
smart-contracts9
aiohttp8
documentation8
openapi8
Programming languages (5)
Github contributions (5)
raphaelhuefner/allbar
Mar 2018 - Jun 2018
Contributions:40 commits, 18 pushes, 1 branch in 3 months
raphaelhuefner/.raphaelize
Nov 2015 - May 2025
Contributions:29 pushes, 5 branches in 9 years 7 months
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