Mikołaj Jakubowski
Senior Software Engineer at Wallfacer Labs
Warsaw, Masovian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolMikołaj Jakubowski is a Senior Software Engineer with six years of experience specializing in blockchain and smart contract development, currently building vaults.fyi at Wallfacer Labs. A Warsaw University of Technology alumnus in mathematics and computer science, he previously contributed to TrueFi at Archblock Poland where he focused on Solidity implementation, testing, and security hardening. His open-source work includes substantial back-end contributions to TrustToken contracts—adding beneficiary validation, reclaim flows, and protections against zero-amount/time loans—demonstrating a pragmatic focus on safety and correctness in DeFi. Comfortable across the full stack of blockchain systems, he pairs rigorous math training with hands-on engineering to deliver auditable, production-ready contracts. Outside of code, he’s a crypto enthusiast and an undiscovered musical talent, an unexpected creative counterpoint to his technical rigor.
6 years of coding experience
2 years of employment as a software developer
Warsaw University of Technology
Github Skills (7)
smart-contracts10
contract10
solidity10
blockchain10
testing10
f9
erc208
Programming languages (6)
Github contributions (5)
trusttoken/contracts-pre22
Dec 2020 - Nov 2021
TrustToken smart contracts written pre 2022. Includes TrueCurrencies and TrueFi Pools.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:331 reviews, 173 commits, 280 PRs in 11 months
Contributions summary:Mikołaj primarily focused on implementing and testing smart contracts. Their contributions included adding beneficiary validation, preventing the creation of zero-amount and zero-time loans, adding a reclaim function, and making changes to incorporate a credit agency. They also addressed code quality issues, such as renaming titles in revert messages and ensuring correct token balances during liquidation and redemption. The user demonstrated proficiency in Solidity and smart contract testing, demonstrating a focus on functionality, security, and adherence to best practices within the project.
ethereumblockchainsoliditypoolssmart-contracts
TrueFi-Protocol/Maker-D3M-Adapter
Jun 2022 - Dec 2023
Contributions:1 review, 11 PRs, 13 pushes in 1 year 6 months
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