Rafael Matias
DevOps Software Engineer at Ethereum Foundation
Zurich, Zurich, Switzerland
Summary
🤩
Rockstar🎓
Top SchoolRafael Matias is a DevOps Software Engineer based in Zurich with 11 years of experience building and operating resilient distributed systems, currently contributing to the Ethereum Foundation. He combines backend Go development with infrastructure and release engineering, helping modernize cornerstone projects like Swarm (censorship‑resistant storage) and Erigon (high‑efficiency Ethereum client) — from Go upgrades and CI/CD to low‑level networking tweaks such as Kademlia improvements. His SRE work at Swiss Re and Numbrs sharpened his expertise in automation (Ansible), deployment pipelines, databases and observability for production systems. Early entrepreneurial projects, including running a chat system with 10k+ users, give him a pragmatic, user‑facing perspective that complements his focus on maintenance, reliability and clean removals of legacy features.
12 years of coding experience
13 years of employment as a software developer
IT: Networking and Programming, IT: Networking and Programming at Escola Secundária Júlio DantasBachelor of Science (BSc), Information Systems and Computer Engineering, Bachelor of Science (BSc), Information Systems and Computer Engineering at ISEL - Instituto Superior De Engenharia De Lisboa
Portuguese, German, English
Github Skills (23)
api-doc10
transaction10
transactional10
dockerce10
docker10
dockers10
go10
api10
transactions10
ethereum10
blockchain10
golang10
devops10
buildr9
etherum9
Programming languages (25)
Github contributions (5)
ethersphere/swarm
Jun 2019 - Dec 2019
Swarm: Censorship resistant storage and communication infrastructure for a truly sovereign digital society
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:22 commits, 98 PRs, 116 pushes in 5 months
Contributions summary:Rafael primarily focused on maintaining and improving the Swarm project's infrastructure and core functionality. Their contributions included updating the project's Go version, removing unnecessary conversions in the API, and adding the user's address to the KademliaInfo structure. Furthermore, the user worked on correcting flag descriptions and disabling USB devices, while also addressing build-related issues, such as removing Debian package and Ubuntu PPA support and removing the Go 1.12 job. The user's work was also focused on releasing new versions.
swarmcensorshipblockchaincommunicationinfrastructure
gobitfly/eth2-beaconchain-explorer
Dec 2021 - Nov 2022
Open source golang based explorer for the eth2 beacon chain
Role in this project:Back-end Developer
Back-end DeveloperContributions:13 commits, 2 PRs, 1 comment in 11 months
Contributions summary:Rafael primarily focused on fixing bugs related to transaction parsing and unmarshalling within the context of an Ethereum 2.0 beacon chain explorer. They addressed issues in retrieving and displaying gas prices and made changes to database schema. Furthermore, the user worked on integrating the genesis fork version for signature validation and added chainId configurations. Their contributions involved modifying code related to Ethereum transaction processing, database interactions, and configuration management.
golangeth2-beacon-chainethereumbeacon-chainblockchain
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