Smart Contract Developer — Remote

Responsibilities

Write, test, and harden contracts for planned token and trading flows; audit-ready delivery.

• Design, implement, and review Solidity contracts for token and trading flows.
• Write unit, fuzz, and invariant tests.
• Optimize gas without sacrificing readability or safety.
• Prepare deployment scripts and verification artifacts.
• Work with auditors and land remediations.

Requirements

Professional Solidity on EVM; Foundry or Hardhat; testing; security-aware contract design.

• Professional smart-contract development on EVM.
• Deep Solidity and EVM understanding.
• Foundry or Hardhat, OpenZeppelin, and static analysis.
• Ability to reason about reentrancy, access control, and upgradeability.

Web3 experience

Required.

Process

Profile review → GitHub technical assessment → technical interview with a stack specialist → final review.

1. 01

   Profile review

   We read your LinkedIn, GitHub/portfolio, and resume against the role stack.

2. 02

   GitHub technical assessment

   A practical task in the role’s stack. We look at judgment, clarity, and production habits — not trick questions.

3. 03

   Technical interview with a stack specialist

   Remote conversation on past work, ZyncSwap scope, and how you would ship in this codebase.

4. 04

   Final review

   We decide and reply by email at james@zynccoin.com.

Engagement

Remote · Full-time / long-term. 40 hours / week. BST (UTC+1) core hours — expect meaningful overlap with the UK / BST team during the workday.

About the role

You will implement the contracts ZyncSwap will rely on after launch. Security, tests, and clarity come first. There is no live listing and no live staking to maintain today.

Nice to have

• Prior DEX or token protocol work.
• Published security write-ups.
• Rust or Move for later multi-chain work.

Compensation

$120,000–$200,000 USD / year · ZYNC grant