Julien Fraichot
Senior Software Engineer at Hyland
La Chaux-de-Fonds, Neuchâtel, Switzerland
Summary
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RockstarJulien Fraichot is a Senior Software Engineer based in La Chaux-de-Fonds, Switzerland, with a decade of experience building production-grade web and blockchain systems. He is a core contributor to the Blockcerts ecosystem, driving the delivery of Blockcerts V3 with strong emphasis on Verifiable Credentials, DIDs and JSON-LD, and has implemented blockchain connectors and smart-contract-based revocation proofs. His background spans frontend performance and accessibility at scale (React/Redux) through to backend and CI/tooling improvements, with a pragmatic focus on automated testing, TypeScript and maintainable bundling. Julien blends research-oriented standards work (W3C contributions around MerkleProof2019) with hands-on engineering, so he is equally comfortable specifying cryptographic linked-data signatures and shipping the code that verifies them. An understated strength is his ability to bridge product, standards and implementation—turning evolving specs into deployable, auditable systems.
10 years of coding experience
6 years of employment as a software developer
Github Skills (9)
verifiable-credentials10
python10
ethereum10
blockchain10
merkle-tree9
json-schema9
api8
apidoc8
web3js8
Programming languages (9)
Github contributions (5)
blockchain-certificates/cert-issuer
Apr 2021 - Oct 2022
Issues Blockcerts using either the Bitcoin or Ethereum blockchain
Role in this project:
Back-end Developer
Back-end DeveloperContributions:34 reviews, 80 commits, 118 PRs in 1 year 6 months
Contributions summary:Julien contributed significantly to the `cert-issuer` repository, which focuses on issuing Blockcerts. Their work involved implementing features for verifiable credentials, including allowing issuer objects with IDs as per the specification. They also worked on integrating and configuring Ethereum blockchain connectors, including Etherscan and MyEtherWallet, and introduced changes related to context and metadata validation for v3 certificates. Further, they focused on the implementation of proof handling and the addition of chained proofs.
ethereumblockchaincryptocurrencybitcoinethereum-blockchain
learningmachine/stage.blockcerts.github.io
Sep 2018 - Jun 2020
Web site
Contributions:26 PRs, 30 pushes, 34 branches in 1 year 9 months
web-site
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