stefans

Web3 Developer

Seasoned Software Engineer with 7+ years specializing in blockchain and onchain data infrastructure. Enhancedsmartcontractsecurityby30%atBlockchainReactor.ExpertinPython,Rust,GoandSQL.Seeking to leverage expertise in building real-time data pipelines and scaling infrastructure at Anza to enhance onchain visibility and data-driven insights.


Experience: 6 years

Yearly salary: $60,000

Hourly rate: $30

Nationality: 🇷🇸 Serbia

Residency: 🇷🇸 Serbia


Experience

Senior Blockchain Developer
CGSTeam
2023 - 2025
Architected and maintained 50+ Solidity/Rust/Go smart contracts, securing $5M+ TVL for 365+ days with zero exploits, aligning with Ethereum architecture. Spearheaded DeFi strategy research, integrating 7 protocols and documenting yield optimization, boosting capital efficiency by 15% to meet Institutional DeFi standards. Fortified code integrity by integrating advanced auditing tools, resolving 12 critical smart contract vulnerabilities using Solidity, preventing exploits and bolstering security. Engineered 5+ novel yield farming strategies, generating $500K+ annualized returns while minimizing user risk by 20%, showcasing Solidity and Ethereum proficiency. Developed a Web3-integrated Telegram mini-game, increasing daily active users by 30% and social media engagement by 20%, enhancing platform visibility.
Blockchain Developer
Betswap
2021 - 2023
Pioneered DeFi strategy using Solidity, boosting user staking by 30% and enhancing liquidity within Q1, driving platform growth and adoption. Identified and resolved 10+ critical smart contract vulnerabilities using Go, improving gas efficiency by 15% and fortifying DeFi application scalability. Led DeFi research and threat remediation, strengthening smart contract security and mitigating protocol-level exposures, ensuring secure applications. Developed 50+ pages of technical documentation, accelerating new developer onboarding by 25% and improving team code review efficiency. Led a team of 3, launching 5 new NFT integrations, increasing daily active users by 20% and improving capital efficiency for platform growth.

Skills

aws
bitcoin
blockchain
ci-cd
cloud-engineer
crypto
ethereum
ethereumjs
func-developer
golang
hyperledger-fabric
mongo
move
nextjs
node
python
react
redis
rust
solana
sql
ton-developer
solidity
english