DeFi Engineer: Layer1 Protocols & Smart Contracts

Flow Foundation; Northern (KY); Hybrid; USD 140,000 - 230,000; Full time

Job summary

Flow Foundation is seeking an experienced DeFi Engineer to drive the next wave of decentralized finance on Flow. You will design, implement, and audit smart contracts for innovative primitives, while partnering with top Web3 teams to port and co-create protocols on Flow.

You will own security, optimize capital efficiency, and mentor the ecosystem with reference implementations and deep-dive analyses. This role blends hands-on coding with strategic impact.

Qualifications

• Experience focused on Web3/DeFi development across multiple languages.
• Hands-on shipping and maintenance of at least one major DeFi protocol to mainnet.
• Strong understanding of smart-contract security patterns and exploits.
• Experience across the stack: Cadence contracts, deployments, on-chain analytics, and dApp front-ends.
• Curiosity for emergent primitives and cross-chain interoperability; ability to adapt to Flow's architecture.
• Excellent communication to translate technical ideas to diverse stakeholders.
• Bonus: familiarity with account-abstraction wallets and formal verification tools.

Responsibilities

• Build, audit, and ship DeFi primitives (AMMs, lending, bridges, LSTs, derivatives).
• Expand DeFi partnerships by guiding protocols on Flow from architecture to launch.
• Improve existing protocols to increase TVL and capital efficiency.
• Prototype future UX approaches like gasless transactions and multi-VM composability.
• Educate the community via reference implementations, blogs, and talks.
• Own end-to-end security including verification, audits, and incident response.

Tools

Cadence tooling

Move tooling

Solidity tooling

Rust tooling

Formal verification tools

Job description

Flow Foundation is seeking an experienced DeFi Engineer to drive the next wave of decentralized finance on Flow. You will design, implement, and audit smart contracts for innovative primitives, while partnering with top Web3 teams to port and co-create protocols on Flow.

You will own security, optimize capital efficiency, and mentor the ecosystem with reference implementations and deep-dive analyses. This role blends hands-on coding with strategic impact.