yattima
Junior Solidity Engineer
Computer science student at the Polish-Japanese Academy of Information Technology (graduating February 2027), focused on smart contract development and security. I work with the EVM, Solidity and Foundry, and write TypeScript for tooling and integration. My diploma thesis is a privacy-preserving, blockchain-based e-voting system, which drew me into zero-knowledge proofs and how they can reconcile verifiability with ballot secrecy. I am currently expanding into Rust and the Anchor framework to build fluency on Solana. I am looking for a junior or internship role where I can contribute to production contracts and keep learning from experienced engineers.
Experiece: 6 months
Yearly salary: $46,000
Hourly rate: $30
Nationality: 🇵🇱 Poland
Residency: 🇺🇦 Ukraine
Experience
Smart Contract Developer
Kozak Agency 2025 - 2026
Implemented and modified Solidity smart contracts, including ERC-20 tokens and ERC-4626 vaults covering deposits, withdrawals, fee logic, accounting, and access control. • Wrote unit and integration tests in Foundry, covering cross-contract interactions and edge cases such as invalid inputs, insufficient balances, unauthorized calls, and non-standard ERC-20 token behaviour. • Reviewed existing contracts for security issues — access control gaps, reentrancy, unvalidated external calls, ERC-20 quirks — and fixed vulnerabilities found during testing and review.
Skills
c-plus-plus
java
rust
typescript
zero-knowledge
solidity
english
polish
russian
ukrainian