Kristijan Rebernisak
Co-Founder at RunningBeta
Oregon, Croatia
Summary
🤩
Rockstar🎓
Top SchoolKristijan Rebernisak is a software engineer and co-founder with 11 years of experience building production-grade web, mobile, and blockchain systems across wearables, health, retail and music industries. He led mobile teams and architecture at Bellabeat and has shipped mobile technology deployed in 1000+ apps, while also architecting a crowdfunding system that processed over $8M. As co-founder of RunningBeta and contributor to Chainlink’s core and external adapters, he blends Solidity, Go, and JS expertise to drive web3 adoption and integrate L2s like Arbitrum. Comfortable from low-level Android and Bluetooth stacks to cloud-native serverless and DevOps, he frequently refactors critical infrastructure for reliability and performance (LRU caching, logging, Docker). Based in Oregon with roots in Croatia, he pairs an MSc in computing with entrepreneurial grit and a long-standing passion for decentralization.
11 years of coding experience
7 years of employment as a software developer
Master of Science, Computing, Master of Science, Computing at Sveuèilište u Zagrebu / University of ZagrebInternational Business, International Business at Founder Institute
Croatian, English
Stackoverflow
960reputation
111kreached
15answers
0questions
Github Skills (24)
caching10
javascript10
solidity10
oracles10
oracle10
ethereum10
blockchain10
golang10
smart-contracts10
nodejs10
chainlink10
devops9
aws9
docker8
rest-api8
Programming languages (11)
Github contributions (5)
smartcontractkit/external-adapters-js
Aug 2020 - Oct 2022
Monorepo containing JavaScript implementation of external adapters
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:554 reviews, 236 commits, 118 PRs in 2 years 2 months
Contributions summary:Kristijan implemented an LRU cache layer to improve the efficiency of external adapter operations. They refactored the `bootstrap` library, including changes to AWS HTTP and REST API gateway integrations. Furthermore, they implemented logging in several serverless environments to track input and output data. They also updated the project's dependencies.
javascriptmonorepotypescriptadapters
smartcontractkit/chainlink
Nov 2020 - Sep 2022
node of the decentralized oracle network, bridging on and off-chain computation
Role in this project:Backend Developer
Backend DeveloperContributions:178 reviews, 95 commits, 55 PRs in 1 year 10 months
Contributions summary:Kristijan primarily contributed to the Chainlink repository by implementing and modifying smart contracts, and related infrastructure, specifically focusing on Solidity and Golang. Their work involved fixing existing code, expanding the supported Solidity pragma versions, updating configurations, and refactoring contracts within the core system. Additionally, the user added and modified Dockerfiles, suggesting involvement in the build and deployment process. Further work was done to integrate the Arbitrum L2, including writing contracts for validation.
golangcomputationethereumblockchaindecentralized
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