Rens Rooimans
Staff Software Engineer at Chainlink Labs
Netherlands
Summary
🤩
Rockstar🎓
Top SchoolRens Rooimans is a Staff Software Engineer with 11 years of experience focused exclusively on blockchain and on-chain systems, currently leading the Solidity team at Chainlink Labs to design and secure CCIP, a cross-chain bridge that protects billions in value across 20+ chains. He combines deep on-chain development in Solidity with backend Golang work, contributing notable fixes to the core Chainlink oracle—such as refactoring minimum confirmation logic across VRF and keeper components. Prior roles include bootstrapping startups to scale and tech consulting at PwC, giving him a rare mix of product-first engineering and enterprise-grade process discipline. Based in the Netherlands, he holds a Master’s in Computing Science from Utrecht University and brings both academic grounding and practical audit/deploy experience. Colleagues rely on him for secure, auditable contract design and pragmatic integration between on- and off-chain systems.
10 years of coding experience
8 years of employment as a software developer
Master’s Degree Computing Science, Master’s Degree Computing Science at Utrecht University
English, Dutch
Github Skills (7)
chainlink10
go10
oracle10
oracles10
ethereum10
blockchain10
solidity9
Programming languages (8)
Github contributions (5)
smartcontractkit/chainlink
Nov 2021 - Nov 2022
node of the decentralized oracle network, bridging on and off-chain computation
Role in this project:
Back-end Developer
Back-end DeveloperContributions:705 reviews, 33 commits, 290 PRs in 1 year
Contributions summary:Rens's commits focused on modifying and integrating minimum confirmation settings within the Chainlink oracle network's core functionality. They updated and refactored various configurations, including those for Keeper specifications and VRF (Verifiable Random Function) operations, ensuring the correct implementation of minimum confirmation requirements across multiple components. The code changes involved adjustments in the `general_config.go`, `validate_test.go`, and `registry_synchronizer_core.go`, along with a series of related updates to VRF and keeper spec models. Additionally, the user renamed confirmations to MinIncomingConfirmations across the code base.
golangcomputationethereumblockchaindecentralized
RensR/AdventOfCode
Nov 2019 - Dec 2022
Advent of code solutions in Go and C#
Contributions:147 commits, 158 pushes, 1 branch in 3 years 1 month
golangcsharpgo
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