Senior Smart Contract Engineer

- About us

FinTech Istanbul is a leading innovation hub dedicated to advancing financial technologies in Turkey. By fostering collaboration between startups, financial institutions, and technology experts, FinTech Istanbul empowers the development of secure, scalable, and cutting-edge solutions for the digital finance ecosystem.

- The Role

We are seeking a Smart Contract / Blockchain Developer to join our team and contribute to the development of blockchain solutions for fintech applications, including decentralized finance (DeFi), tokenization, and secure transaction frameworks.

- Key Responsibilities

• Architect, implement, and deploy secure smart contracts for fintech and DeFi applications
• Lead smart contract design decisions focusing on robustness, auditability, gas efficiency, and resilience against vulnerabilities
• Mentor junior developers, perform code reviews, and establish best practices in blockchain security and testing

• Collaborate with cross-functional teams (backend, product, compliance, and security) to align smart contract features with project goals

  Support integration of on-chain solutions with off-chain systems (databases, APIs, wallets, and payment rails)

- Qualifications

• Solid understanding of tokenomics, DeFi mechanisms, and fintech applications
• Strong testing and CI/CD workflow skills; experienced with Hardhat, Truffle, Foundry, or similar tools
• Proven track record of writing secure contracts, familiarity with vulnerabilities (reentrancy, integer over/underflow, front-running, flash loans, etc.)
• Experience with audits, formal verification, fuzz testing, or other advanced contract assurance techniques

- Bonus Points

• Experience across multiple EVM chains or Layer-2 / sidechains
• Knowledge of cross-chain bridges, oracles, and token design
• Contributions to open-source security tooling, audits, or published smart contract code
• Hands-on experience developing and deploying smart contracts (Solidity / EVM-compatible) in production is BIG PLUS

- Why Join us?

• Work at the forefront of fintech innovation in Turkey and globally
• Collaborate with a talented, driven, and passionate team
• Gain access to cutting-edge technologies and strategic projects transforming digital finance
• Flexible and remote-friendly work environment
• Opportunity to grow your skills and make a real impact in the Web3 and fintech ecosystems

FinTech Istanbul is an equal opportunity workplace. We celebrate diversity and are committed to creating an inclusive environment for all employees.