Ivan Koliesnik is a skilled back-end developer with extensive experience in blockchain technology and web development. Starting as a web developer in June 2020 as a freelancer, Ivan progressed to a back-end developer role at De.Fi from April 2021 to August 2024, where significant contributions included managing token metadata, integrating EVM and non-EVM chains, and developing microservice architectures on NestJS. As a senior back-end engineer at Hacken since November 2024, Ivan has implemented advanced security measures, designed cross-chain services, and mentored junior developers. Skills encompass proficiency in various web3 JS libraries, backend technologies like Redis and PostgreSQL, and experience with cloud platforms such as AWS and GCP.
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