hirama

Senior Solidity Developer

I'm Andrei Zolin, a Senior Solidity Developer with over six years of experience in blockchain development and more than eight years in IT. I specialize in building secure and high-performance smart contracts, having worked on DeFi, stablecoins, and cross-chain solutions, with over $10M secured on-chain. My passion lies in designing decentralized financial systems that are both scalable and secure, and I enjoy tackling complex challenges in smart contract security and optimization.Experimenting with building AI agents using the ElizaOS and Virtuals frameworks and optimistically exploring this emerging movement.

Beyond my work, I’m deeply involved in the crypto space, engaging with the community, researching new blockchain trends, and exploring innovative DeFi mechanisms. I also run a community of Solidity developers on Telegram, where we discuss best practices and cutting-edge developments in smart contract engineering.

Outside of blockchain, I stay active by playing padel, cycling, and running. I also enjoy reading thought-provoking literature, especially works by Viktor Pelevin. Currently, I’m based in Buenos Aires and always open to connecting with like-minded professionals in the Web3 space.


Experience: 7 years

Yearly salary: $200,000

Hourly rate: $60

Nationality: šŸ‡·šŸ‡“ Romania

Residency: šŸ‡¦šŸ‡· Argentina


Experience

Senior Software Engineer
Insolar
2018 - 2021
Led the development of a block explorer and web wallet, improving blockchain data accessibility. Integrated the Secp256k1 cryptographic curve into the core blockchain, enhancing security and system efficiency. Tech Stack: Go, Java, PostgreSQL, Redis, Web3.js, TypeScript, JavaScript.
Solidity R&D
ć‚½ćƒ©ćƒŸćƒ„ SORAMITSU
2018 - 2020
Designed and implemented a distributed Notary system for cross-chain swaps, enabling secure interoperability. Tech Stack: Solidity, Kotlin, PostgreSQL.
Software Developer
Sberbank-Technology
2016 - 2018
Designed and implemented a proof-of-concept (PoC) supply chain solution for international goods shipment, enhancing transparency and traceability. Tech Stack: Solidity, Java, PostgreSQL.

Skills

architecture
cosmos
developer-relations
ethereum
golang
nestjs
postgres
solidity
web3js
zk-evm
zk-rollup
english