Solidity Smart Contract Developer

$120k - $180k

Squadsy

We are seeking a talented Solidity Smart Contract Developer to design, build, and maintain secure, gas-efficient smart contracts on EVM-compatible networks. You will work closely with our engineering, product, and security teams to deliver production-grade decentralized applications (dApps) and protocol infrastructure. This is a hands-on role for someone who thrives in a fast-moving Web3 environment and cares deeply about code correctness and security.

Key Responsibilities

* Design, develop, test, and deploy Solidity smart contracts (ERC-20, ERC-721, ERC-1155, and custom protocol logic)
* Write comprehensive unit and integration tests using Foundry and/or Hardhat
* Perform gas optimization and code refactoring for efficiency and readability
* Conduct internal code reviews and participate in external security audit processes
* Integrate smart contracts with frontend dApps via ethers.js/viem and backend services
* Collaborate with auditors to remediate findings and document security decisions
* Maintain deployment scripts, upgrade patterns (proxy contracts), and CI/CD pipelines
* Monitor on-chain activity and respond to incidents post-deployment
* Stay current with EIPs, EVM changes, and emerging security best practices

Required Qualifications

* 2+ years of professional Solidity development experience (or equivalent demonstrable portfolio)
* Strong understanding of the EVM, gas mechanics, and smart contract security patterns
* Proficiency with Foundry and/or Hardhat, plus Git and CI/CD workflows
* Experience with OpenZeppelin contracts and common token standards
* Solid grasp of blockchain fundamentals: accounts, transactions, reentrancy, access control, upgradability
* Working knowledge of JavaScript/TypeScript for testing and integration
* Strong written communication skills for technical documentation

Nice to Have

* Experience with DeFi protocols, NFTs, DAOs, or Layer 2 solutions
* Familiarity with The Graph, IPFS, or oracle integrations (Chainlink)
* Understanding of formal verification tools (Certora, Slither, Mythril)
* Prior experience responding to or participating in security audits
* Contributions to open-source Web3 projects
* Rust or Go experience for cross-chain or backend work

What We Offer

* Competitive salary (range: $120,000 – $180,000 USD, depending on experience) + token/equity incentives
* Remote-first culture with flexible hours
* Learning budget for courses, conferences, and certifications
* Opportunity to work on cutting-edge decentralized technology with a collaborative team

How to Apply

Submit your resume, GitHub profile, and links to deployed contracts or audit reports. Candidates may be asked to complete a short take-home smart contract challenge.

Apply

Vacancy posted 6 days ago

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