Senior Smart Contract Engineer

About the role

Every staking reward, vesting schedule and escrow release on Cryptor is settled by smart contracts. As a Senior Smart Contract Engineer you will own a large part of that code, from the first design note to the audited deployment. You will join a small protocol team that reviews every line together, writes tests before features and treats a clean audit report as the normal outcome, not a lucky one.

In your first months you will take over the vesting contracts, plan their next upgrade with the team and pair with our Head of Security on the review checklist. Later you will help shape the architecture for new products, such as the escrow service for over-the-counter trades and the next generation of staking pools.

Responsibilities

• Design and build upgrade-safe contracts for staking pools, token vesting and on-chain escrow.

• Write unit, fuzz and invariant tests that cover the edge cases before an auditor finds them.

• Lead internal reviews and work with external auditors from scope to final fixes.

• Optimize gas costs without trading away readability or safety.

• Document contract behavior so product, support and compliance can explain it to customers.

Requirements

• Five or more years of software engineering, with at least three writing production Solidity.

• Deep knowledge of the EVM, common attack patterns and proxy upgrade patterns.

• Hands-on experience with Foundry or Hardhat and a habit of thorough testing.

• Clear written English for design documents and review comments.

Nice to have

• Experience with formal verification or symbolic execution tools.

• Contributions to open-source DeFi protocols or audit contest findings.

• Familiarity with Layer 2 networks and cross-chain messaging.

What we offer

You will work fully remote with overlap hours that suit your time zone, and you will have real ownership of code that moves real value. Curious how the protocol team fits into the bigger picture? Read more about Cryptor and our roadmap.

• A CRT token grant that vests over four years, on top of your salary.

• A yearly learning budget of $2,000 for courses, books and conferences.

• Health coverage for you and your family, wherever you live.

• Flexible hours, a home-office stipend and one team retreat every year.

Our hiring process takes about three weeks: a short application review, an intro call, a skills chat with the team and an offer. We reply to every applicant, and we are happy to adjust any step if you need accommodations.