Jayย Welsh
Web3 Developer at Propy Inc.
Western Cape, South Africa
Summary
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Top SchoolJay Welsh is a Web3 developer with 10 years of software engineering experience, specialising in Solidity development, auditing and on-chain optimisation, and building full-stack interfaces for Ethereum-based apps. Currently at Propy, he combines Solidity and TypeScript expertise with practical experience implementing Web3 standards and performant on-chain logic. He transitioned from traditional full-stack roles into focused blockchain work at seen.haus and VALR, bringing production-grade backend and frontend skills (React, Vue, Node) to decentralised systems. Self-taught since 2012, Jay prefers open-source freelance work and has a persistent, never-give-up mindset that drives meticulous audits and pragmatic optimisations.
10 years of coding experience
7 years of employment as a software developer
Did not go to university. Self-taught post-matric., Did not go to university. Self-taught post-matric. at The Internet
English, Afrikaans
Stackoverflow
496reputation
19kreached
32answers
13questions
Github Skills (194)
dependency-management10
python10
svg10
javascript-api10
visx10
wallet10
doi10
python-packaging10
lightbox-gallery10
toast10
firefox10
api10
rest10
usedapp10
data-visualization10
Programming languages (11)
Github contributions (5)
silo-finance/DefiLlama-Adapters
Feb 2023 - Jan 2025
Contributions:4 PRs, 16 pushes, 9 branches in 2 years
JayWelsh/coronamap
Mar 2020 - Aug 2020
Regional Coronavirus Data Visualisations for South Africa
Contributions:15 commits, 14 pushes, 1 branch in 4 months
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