Senior Solidity Engineer

Job DescriptionJob DescriptionCareer Renew is recruiting for one of its clients a Senior Solidity Engineer - this is a fully remote role and candidates can be based in PST - CAT timezones.n

We are on a mission to redefine capital markets infrastructure through cutting-edge on-chain derivatives and protocol architecture. We’re seeking a highly experienced Senior Solidity Engineer (or VP of Engineering , depending on seniority fit) to join our remote-first team. This is a pivotal leadership role within our smart contract engineering group, working alongside the Chief Protocol Officer, Engineering Manager, and cross-functional product leaders to build next- EVM-based DeFi infrastructure.

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The team comes from established protocols, hedge funds, and market makers, and is backed by Polychain, Van Eck, Binance, Selini, Hashed, and others.

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Key Responsibilities

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  Serve as one of the primary owners of Solidity development within a high-performing team of 6 smart contract engineers.

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  Architect, develop, and optimize secure, gas-efficient smart contracts powering Concrete’s DeFi protocol.

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  Contribute to protocol design, audits, and security reviews with deep technical ownership.

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  Collaborate with product and project managers to align technical deliverables with roadmap priorities.

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  Drive the evolution of Concrete’s on-chain architecture, with potential to scale across multiple chains.

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  Stay ahead of developments in the Ethereum ecosystem and contribute to open-source efforts as relevant.

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Requirements

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  3–4+ years of professional experience writing secure Solidity smart contracts.

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  Proven engineering background within an EVM-based DeFi protocol .

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  Strong understanding of smart contract testing, deployment frameworks, and upgradeability patterns.

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  Familiar with Solidity optimization, gas cost analysis, and safe architectural practices.

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Nice to haves

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  Experience with cross-chain architectures , L2s, and bridging protocols.

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  Technical familiarity with DeFi primitives such as vaults, lending markets, interest rate modeling, and asset management.

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  Prior leadership experience or desire to grow into a VP-level technical leadership role.

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Why Join Concrete

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  Work with a tight-knit, world-class team shaping the future of decentralised derivatives.

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  Enjoy a fully remote culture with high trust, flexibility, and ownership.

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  Competitive compensation + unlimited PTO and other flexible benefits.

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Compensation & Packagen

Competitive compensation + unlimited PTO and other flexible benefits.