Senior Smart Contract Engineer (Blockchain Infrastructure)

CoinList • United State

Remote

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AI Summary

Design and deploy production-grade Solidity smart contracts for CoinList’s Passage platform, acting as intermediaries between users and asset providers. Own system architecture, security, and upgrades while collaborating in a fast-paced, greenfield environment. Requires 7+ years of experience, deep EVM expertise, and rigorous security practices.

Key Highlights

Build and maintain Solidity smart contracts for onchain capital markets infrastructure (EVM chains)

Design full contract systems (storage, upgradeability, access control, emergency paths) with zero-trust security mindset

Work directly with CTO in a small, high-impact team shaping company direction and revenue

Key Responsibilities

Develop and deploy production-grade Solidity smart contracts for EVM chains, reviewed by external auditors

Design contract systems including storage layout, upgrade strategies, access control, and emergency protocols

Conduct adversarial security reviews (flash loans, MEV bots, token manipulation) and implement defenses

Collaborate on product development for token sales, equities, and onchain funds with direct revenue impact

Lead security testing (fuzzing, invariants, deployment rehearsals) and incident response

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Technical Skills Required

Solidity Smart Contract Security Blockchain Infrastructure

Benefits & Perks

Fully remote work with US East/West Coast overlap flexibility

Base salary: $170,000–$190,000 (annual)

Equity compensation

No-cost medical/dental/vision (US only)

Unlimited PTO

Monthly AI tool budget

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Nice to Have

Rust/Anchor or Solana program experience

DeFi protocol depth (lending, AMMs, staking)

Account abstraction (ERC-4337) knowledge

Job Description

CoinList is building the distribution network for onchain capital markets. Through its Passage platform, CoinList provides the infrastructure that lets any wallet, app, or platform embed access to tokenized assets, from equities and funds to token sales and other real-world assets, through a single integration. With a network of over 12M investors and more than $1.2B in transactions, CoinList connects asset issuers with the platforms and investors who want access to them.Today, CoinList is scaling two core businesses:

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