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UFUK YILDIRIM
🇹🇷Turkey
Created AtUpstaffer since May, 2026
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UFUK YILDIRIM — Blockchain & Smart Contract Developer

Expertise in Smart Contract, Blockchain Project/Product Manager.

 Last verified on May, 2026

Core Skills

Solidity
Solidity
2 yr.
Rust
Rust
Foundry
1 yr.
Hardhat
Hardhat
1 yr.

Bio Summary

  • Over 2 years of expertise in blockchain development, specializing in Solidity, Rust, and smart contract security auditing across 150+ networks including Ethereum and Layer 2 chains.
  • Experienced in full-stack development using TypeScript, Node.js, React.js, and cloud technologies, with strong command of testing frameworks like Hardhat, Foundry, and static analysis tools.
  • Engineering background with a Bachelor’s degree in Electrical Engineering and advanced training in smart contract hacking and Solidity development, emphasizing secure, scalable, and maintainable code architectures.

Technical Skills

Programming Languages JavaScript, Rust, Solidity, TypeScript
.NET Platform ASP.NET
JavaScript Frameworks Express, Node.js, React
Databases & Management Systems / ORM Liquibase, Manticore, MongoDB, SQL
UI Frameworks, Libraries, and Browsers HTML, Tailwind CSS
Cloud Platforms, Services & Computing AWS
Amazon Web Services AWS CloudTrail
Google Cloud Platform Firebase Hosting
Payment Gateways Apple Pay
Virtualization, Containers and Orchestration Docker
Blockchain and Decentralized Software EVM, Foundry, Hardhat, OpenZeppelin, RainbowKit
Version Control Git
SDK / API and Integrations GraphQL, RESTful API
QA, Test Automation, Security QA Automation
Methodologies, Paradigms and Patterns TDD
Mail / Network Protocols / Data transfer WebSockets
Other Technical Skills Bun.sh, Echidna, Flash, Integration & Transaction Signing, MEV, Privy API, Slither, Viem.sh, Wagmi.sh, Wallets

Work Experience

Product Manager & Blockchain Developer - MarsChain Foundation (MarsChain Foundation Projects: ZebSwap, MarsChain Bridge, Mypher, Rocket Pad, Galactic Travel)

Duration: 03/2025 – 03/2026
Summary:
  • Developed and managed multiple projects including a cross-chain bridge between Ethereum and MarsChain, a mobile app Mypher, and other DeFi and blockchain applications
  • Led deployment of Mars Chain Arbitrum Orbit L2 Network on Rollup-as-a-Service platforms
  • MarsChain Foundation focuses on blockchain infrastructure and decentralized finance solutions
Responsibilities:
  • Built a cross-chain bridge (Ethereum ↔ MarsChain) processing over 5000 transactions with zero failure rate.
  • Published Mypher mobile app to Google Play Store and App Store with all necessary licensing.
  • Developed MVP to production for ZebSwap, MarsChain Bridge, Mypher, Rocket Pad, and Galactic Travel projects.
  • Led deployment and management of Mars Chain Arbitrum Orbit L2 Network on RaaS platforms.
Technologies: Solidity, Blockchain, Smart Contracts, Cross-chain Bridge, Mobile App Development, Rollup-as-a-Service (RaaS)

Product Manager & Blockchain Developer - U-topia Finance (U-topia Finance Products: U-App, U-Card, U-Wallet, U-Dex, UCOIN & BNB Staking Contracts)

Duration: 05/2024 – 03/2025
Summary:
  • Developed a full-stack decentralized finance product suite including a multi-feature app, crypto card, gasless wallets, and decentralized exchange functionalities on Gnosis and BSC networks
  • Audited and developed auto-compounding staking contracts with significant TVL
  • U-topia Finance is a DeFi platform offering integrated financial services
Responsibilities:
  • Developed U-App integrating U-Card, U-Wallet, and U-Dex with Wallet and Google signup/login.
  • Developed U-Card crypto card available in 80+ countries by integrating Gnosis Pay API on Gnosis network.
  • Developed U-Wallet gasless account abstraction wallets integrating Privy API on Gnosis and BSC networks.
  • Developed U-Dex for staking, swapping, and lending of UCOIN and BNB on BSC network.
  • Developed and audited UCOIN & BNB auto-compounding staking contracts with $100k TVL and 800+ test cases.
Technologies: Solidity, Smart Contracts, Gnosis Pay API, Privy API, BSC Network, Gnosis Network, Full-stack Development, Security Auditing

Blockchain Developer Intern - Limix AI (Limix AI Automated Testing Integration)

Duration: 03/2024 – 05/2024
Summary: Integrated automated testing frameworks and tools to improve smart contract testing efficiency at Limix AI, a company focused on AI and blockchain integration.
Responsibilities:
  • Integrated automated testing using Hardhat, Foundry, Slither, Echidna, and Manticore.
  • Reduced test time by 40% through automation and improved testing processes.
Technologies: Hardhat, Foundry, Slither, Echidna, Manticore, Solidity, Smart Contract Testing

Blockchain & Smart Contract Developer (Yieldor - Delta Neutral Strategy Bots)

Duration: 08/2024 – Present
Summary: Developed advanced delta-neutral hedging bots achieving 120% annual yield with zero risk by leveraging liquidity pools, staking, leveraged lending, and liquid staking across multiple decentralized applications.
Responsibilities:
  • Implemented advanced delta-neutral hedging methods and interoperability for liquidity pools and staking mechanisms.
  • Conducted custom delta-neutral strategies on 54 different DApps increasing usability and yield by 67%.
  • Developed compatibility for all token types leveraging EIPs/ERCs, amplifying system applicability by 93%.
Technologies: Solidity, Smart Contracts, DeFi, Liquidity Pools, Staking, EIPs/ERCs, Blockchain

Blockchain & Smart Contract Developer (Arbitor - Zero Principal Arbitrage Bots)

Duration: 02/2024 – Present
Summary: Engineered arbitrage bots operating across 150 blockchain networks with a 90% success rate, generating $20,000 revenue in one year by utilizing MEV, flash loans, and just-in-time liquidity techniques.
Responsibilities:
  • Implemented MEV, Flash Loan, Flash Swap, and Just In Time Liquidity techniques to remove collateral requirements.
  • Tracked 55,000 liquidity pools across 150 networks using event-driven architecture and WebSockets.
  • Developed mathematical formulas improving input/output calculation accuracy by 85% for various liquidity pool types.
  • Integrated real-time smart contract event tracking reducing delay by 92% and improving execution time by 78%.
Technologies: Solidity, Smart Contracts, MEV, Flash Loans, Flash Swaps, WebSockets, Event-Driven Architecture, UniswapV2/V3/V4, Curve, Balancer, CPAMM, CLAMM, LB (DLMM)

Education

  • Selcuk University, Bachelor of Engineering in Electrical Engineering
    Bachelor of Engineering in Electrical Engineering
    09/2020 – 06/2025

Certification

  • Advanced Smart Contract Hacking Course
    Blockchain Security Academy focusing on smart contracts with attack vectors, vulnerability findings, security auditing tools, EVM and Trace Calls
  • Advanced Solidity Bootcamp
    Metana focusing on smart contract development with Solidity, YUL, Op Codes, EVM, Storage Layout, Stack, State Machine

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