Design and maintain EVM smart contracts for perpetual markets, covering trading, collateral, positions, funding, PnL, liquidations, and oracle integrations. Build comprehensive Foundry tests, optimize gas usage, review economic and security risks, address audit and bug-bounty findings, and support secure deployments, upgrades, monitoring, and incident response. Collaborate with protocol, backend, risk, product, and audit teams.
We are building decentralized perpetual markets for real-world assets, where correctness, capital efficiency, and security are non-negotiable. As a Senior Solidity Engineer, you will design and implement the core on-chain contracts that govern trading, collateral, positions, funding, and liquidations.
You will work closely with protocol researchers, backend engineers, risk teams, and external auditors to turn complex financial mechanics into safe, efficient, and maintainable smart contracts. This is a high-ownership role for an engineer who treats security as a product requirement—not an afterthought.
What you’ll do
- Architect, implement, and maintain EVM smart contracts for perpetual swap markets, including margining, position accounting, funding-rate settlement, PnL calculation, and liquidations.
- Design safe integrations with price oracles, index feeds, and risk parameters, with careful attention to staleness, manipulation resistance, and failure modes.
- Build comprehensive test suites using Foundry, including unit, integration, fuzz, invariant, and fork tests for critical protocol paths.
- Optimize gas consumption and contract efficiency while preserving clarity, safety margins, and auditability.
- Review protocol designs for economic risks, access-control weaknesses, reentrancy, oracle dependencies, rounding issues, and other common EVM attack vectors.
- Lead technical responses to findings from internal reviews, external audits, bug bounties, and incident investigations.
- Support secure deployment workflows, upgrade procedures, monitoring, and post-deployment incident response.
- Collaborate with product and engineering teams to ensure on-chain mechanics align with the intended trading experience and risk framework.
What we’re looking for
- 4+ years of professional software engineering experience, including at least 2 years writing production Solidity.
- Deep understanding of the EVM, Solidity security patterns, storage layout, access control, and common vulnerability classes.
- Experience shipping contracts to mainnet that custody or manage real user value.
- Strong command of Foundry or Hardhat, automated testing, static analysis, and secure deployment practices.
- Practical knowledge of DeFi primitives, including AMMs, lending markets, collateralized positions, derivatives, and oracle systems.
- Experience integrating production price feeds or oracle infrastructure.
- Excellent written communication and the ability to explain complex security and protocol tradeoffs clearly.
Nice to have
- Direct experience building perpetual futures, options, margin-trading, or other derivatives protocols.
- Familiarity with funding rates, liquidation engines, insurance funds, settlement flows, and position-risk calculations.
- Background in smart-contract auditing, formal verification, security research, or bug-bounty participation.
- Experience with upgradeable contract patterns, proxy architecture, and cross-chain messaging or bridging systems.
- Experience with Chainlink, Pyth, or custom oracle architectures.
- Familiarity with TypeScript-based tooling, deployment automation, and on-chain monitoring.
What success looks like
In your first six months, you’ll have contributed to the design and delivery of core perpetuals contracts, strengthened the protocol’s test and audit posture, and helped establish secure patterns for future markets and features.
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