Senior Engineer v4 Hooks

Overview We’re looking for a senior builder who lives at the intersection of protocol engineering and DeFi product design. You’ll design, prototype, and productionize Uniswap v4 hooks that unlock new markets, such as dynamic fee markets, JIT‑aware liquidity protections, programmable compliance for RWAs, solver/intents integrations, perps/credit primitives, and beyond. Responsibilities Bring product thinking for market‑tailored hooks: ideate and incubate high‑leverage ideas across market segments (volatile pairs, stable‑stable pairs, and order sizes spanning retail to whales); translate insights into concrete hook specs with adoption and measurement plans. Architect & ship hooks: own the full lifecycle from whiteboard to an audited mainnet deployment, advancing the roadmap in areas such as fee dynamics, liquidity management, MEV/LVR capture, KYC/attestations, and JIT. Author canonical patterns: publish reference implementations, hook templates, and living specs that other teams can safely extend. Design with distribution in mind: co‑create adoption plans with other DeFi protocols (lending/ALMs/vaults), aggregators/routers, intent layers, and asset issuers; ship adapters, simulators, and SDK glue to ease integration. Own security & correctness: threat‑model hooks, define invariants, fuzz and formally verify critical paths, and partner with external auditors. Data & feedback loops: instrument events and metrics, write Dune/Flipside dashboards, and run controlled experiments to tune parameters such as fees, tick ranges, and JIT thresholds. Performance Expectations 3 months: Land one high‑leverage hook in audit or on testnet with credible distribution partners; establish a metrics schema and dashboard framework for hook evaluation. 6 months: Deploy two production hooks with measurable flow/TVL and zero critical incidents; provide clear adoption playbooks for routers, wallets, and solver layers; ship at least three third‑party teams on your patterns; demonstrate Improvements in LP or trader outcomes. Qualifications 3+ years of smart‑contract engineering, with 2+ years shipping production DeFi at protocol teams (DEX, lending, perps, bridges, market‑making infrastructure, oracles). Deep Solidity & EVM internals expertise; strong with Foundry, fuzzing, property tests; confident in reading and implementing community smart contracts. Knowledge of common security pitfalls and practical understanding of Uniswap v4 architecture (PoolManager, Hooks, singleton design, state scoping, callback surfaces). Practical understanding of Uniswap v3 concentrated liquidity model and liquidity routing infrastructure (aggregators, routers, solvers). Strong product sense in DeFi: able to reason about incentives, MEV, LP/trader UX, and distribution realities. A portfolio of shipped, battle‑tested contracts and public design docs, posts, or talks. Nice‑to‑have Signals Shipped a v4 hook on mainnet with end‑to‑end readiness (regardless of order‑flow capture). Hands‑on learnings and production experience with scalable and organized testing suites. Test‑driven design practices. #J-18808-Ljbffr Framework Ventures