Dmytro Haidashenko
Senior Software Engineer at Chainlink Labs
Warsaw, Masovian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolDmytro Haidashenko is a senior software engineer and former CTO with 9+ years building high-throughput, fault-tolerant systems across Golang, blockchain, Web3, and distributed architectures. He has founded and led multiple engineering teams (10–16 people), laid technical foundations for early-stage startups that collectively raised $16M+, and helped drive a product to $150M GMV. His work spans event-driven microservices, horizontally scalable data pipelines, and optimization that cut search latency from tens of seconds to sub-100ms while keeping infrastructure costs steady. At Rarify and Distributed Lab he designed blockchain-native pipelines and marketplace-agnostic algorithms that dramatically sped up integrations and on-chain data availability. Now contributing to Chainlink Labs, he has hands-on experience improving reliability of decentralized oracle node databases—fixing connection/transaction handling and adding tests to harden production systems. Based in Warsaw, he combines a founder’s mindset with deep operational instincts for shipping resilient, measurable systems.
8 years of coding experience
10 years of employment as a software developer
National Technical University "Kharkiv Polytechnic Institute"
Github Skills (7)
database-management10
go10
postgresql10
testing9
oracle8
blockchain8
oracles8
Programming languages (6)
Github contributions (5)
smartcontractkit/chainlink
Oct 2023 - Mar 2025
node of the decentralized oracle network, bridging on and off-chain computation
Role in this project:
Backend Developer
Backend DeveloperContributions:287 reviews, 83 PRs, 378 pushes in 1 year 5 months
Contributions summary:Dmytro primarily focused on improving the database interaction logic within the Chainlink project. Their commits include fixing issues related to database connection management and transaction handling, such as ensuring connections aren't prematurely closed. The user also implemented unit tests to verify the new features and bug fixes to improve reliability. These changes demonstrate a focus on improving the underlying data access layer for the decentralized oracle network.
golangcomputationethereumblockchaindecentralized
swarmfund/swarm-api
Jan 2018 - May 2018
Contributions:137 pushes, 45 branches in 4 months
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