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Stanislav Trenev

Smart Contract Engineer

Sofia, Bulgaria

🟒Aping In

12 years in software engineering, 5 years in Blockchain, specializing in DeFi smart contract development and DeFi integrations. Led projects processing over $300M in stablecoin transaction volume with zero exploits. Active security researcher with critical and high-severity findings on bug bounty platforms.

Work Preferences

Salary

USD 120,000

Skills

Solidity9/10
Smart Contract Development9/10
DeFi Protocols9/10
JavaScript9/10
ERC20/ERC721/ERC46269/10
TypeScript (8/10)Ethers.js (8/10)Foundry (8/10)Hardhat (8/10)NFT Contracts (8/10)Smart Contract Security (8/10)The Graph Protocol (7/10)OpenZeppelin Defender (7/10)Slither / Aderyn / Echidna (7/10)LayerZero (OFT/OApp) (7/10)Node.js (7/10)Chainlink Automation (7/10)Tenderly (7/10)GitHub Actions (6/10)Google Cloud (5/10)

Work Experience

Lead Smart Contract Engineer

Legion

Apr 2024 β€” Mar 2026

Architected and deployed ERC20 token sales, vesting, and distribution contracts processing $300M+ in stablecoin transaction volume. Designed protocol smart contract architecture, led security operations, managed external audits and bug bounty programs with zero exploits. Delivered and maintained unit tests using Foundry with 100% line and branch coverage.

Lead Smart Contract Engineer

Return Finance

May 2023 β€” Apr 2024

Developed 10+ ERC4626 yield-bearing vaults with integrations across Aave, Fluid, Ethena, Convex and others, securing $1M+ TVL. Designed governance token using LayerZero's OFT standard for cross-chain transfers across 10+ blockchains. Built automated yield-harvesting mechanism using Chainlink Automation, saving users over $50K in fees.

Technical Team Lead (External Contractor)

Ledger

Jul 2022 β€” Nov 2022

Led cross-functional team as external contractor to deliver an ERC721 metadata management tool, achieving successful go-to-market in under 6 months.

Smart Contract Engineer

LimeChain

Jan 2021 β€” Nov 2022

Contributed to multiple projects delivering smart contract development with 100% customer satisfaction. Engineered UniverseXYZ NFT auctions, marketplace, and minting contracts driving over $8M in NFT sales. Extended PoolTogether no-loss savings protocol fork to integrate BarnBridge as a yield source, managing over $100K in user deposits.

Senior Software Engineer

BΓΌhler Group

Mar 2020 β€” Jan 2021

Senior Software Engineer

VMware

Mar 2019 β€” Mar 2020

Senior Software Engineer

FactSet

May 2016 β€” Jul 2018

Senior Software Developer

MentorMate

Jan 2016 β€” May 2016

Software Developer

KPMG

Apr 2015 β€” Jan 2016

Education

Cyfrin Updraft

Certification Β· Smart Contract Security

? – 2025

Consensys Academy

Certification Β· Certified Ethereum Developer (Online Bootcamp)

? – 2020

University of London

BBA Β· Business Administration

2014 – 2017

Sofia High School of Mathematics

Bulgarian National Diploma Β· Mathematics and Informatics

2003 – 2011