Harry Ermawan
Software Engineer Blockchain Web3 Solidity Rust at Upwork
Bandung, West Java, Indonesia
Summary
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Rockstar🎓
Top SchoolHarry Ermawan is a pragmatic software engineer with 9 years of experience specializing in backend systems and blockchain/Web3 engineering, currently building payment and wallet infrastructure on Upwork after driving Web3 products at Pintu. He has architected cross-chain and EVM swap aggregators, MPC wallets, and DeFi earn/staking systems managing multimillion-dollar AUM, blending Golang, TypeScript, Solidity, and Rust in production. Earlier roles as technical lead at eFishery and founding engineer at Chipin show a track record of taking products from zero to one, reducing operational losses and improving reliability through pragmatic system design. Harry’s blockchain roots date to Stellar implementations at Ralali and research into PoA tokenization, and he’s curious about Solana, ZK proofs, MEV and cross-chain interoperability—often pairing product instincts with hands-on low-level engineering.
9 years of coding experience
2 years of employment as a software developer
German Language, German Language at Goethe InstituteComputer Science, Nano Degree Program, Computer Science, Nano Degree Program at UdacityWeb Master Pro Elite, A, Web Master Pro Elite, A at Babastudio.comSMA, IPA / SCIENCE, SMA, IPA / SCIENCE at SMA Negeri 8 BandungComputer Science, Computer Science at CODESCHOOLComputer Science, Oracle Academy (Applied Database), 3.4/4.0, Computer Science, Oracle Academy (Applied Database), 3.4/4.0 at BINUS UniversityComputer Science, Computer Science at Udemy Academy
Indonesian, English, German
Stackoverflow
1reputation
662reached
0answers
1question
Github Skills (121)
geth10
abi10
p2p10
in-progress10
ledger10
golang10
bitcoin10
go10
solana10
ethereum10
blockchain10
rest9
scale9
api9
scalable9
Programming languages (9)
Github contributions (5)
hryer/todo-react-offline
May 2019 - Jun 2019
Contributions:17 commits, 10 pushes in 1 month
hryer/hryer
Dec 2020 - Jan 2025
Contributions:48 pushes, 1 branch in 4 years 1 month
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