Remote Senior Smart Contract Engineer — Ethereum & Security

Placements24; Pretoria; Hybrid; ZAR 1,921,000 - 2,881,000; Full time

Benefits offered by this job

Competitive salary

Remote work

Health insurance

Professional development

Job summary

Placements24 is seeking a Senior Smart Contract Engineer to design, develop, test, and deploy secure smart contracts for decentralized applications. The role emphasizes a deep understanding of Solidity, EVM-compatible blockchains, and secure coding practices in a fast-paced, remote environment.

You will collaborate with product teams to deliver scalable blockchain solutions, perform security audits, and mentor junior engineers while contributing to the team’s knowledge sharing and best practices.

Qualifications

• 5+ years of professional software engineering experience, with at least 2 years focused on smart contract development.
• Expertise in Solidity and experience with EVM-compatible blockchains.
• Strong understanding of blockchain concepts, cryptography, and token standards (ERC-20, ERC-721).
• Experience with smart contract testing frameworks (Hardhat, Truffle) and security analysis tools.
• Proficiency in JavaScript, Python, or Go.
• Excellent problem-solving skills and a proactive approach in a remote setting.

Responsibilities

• Develop, test, and deploy robust and secure smart contracts on Ethereum-based platforms.
• Optimize gas usage and performance for scalability.
• Collaborate with frontend and backend teams to integrate contracts into applications.
• Conduct security audits and code reviews to identify vulnerabilities.
• Contribute to architecture of dApps and protocols.
• Mentor junior engineers and share best practices in smart contract development.

Job description

Placements24 is seeking a Senior Smart Contract Engineer to design, develop, test, and deploy secure smart contracts for decentralized applications. The role emphasizes a deep understanding of Solidity, EVM-compatible blockchains, and secure coding practices in a fast-paced, remote environment.

You will collaborate with product teams to deliver scalable blockchain solutions, perform security audits, and mentor junior engineers while contributing to the team’s knowledge sharing and best practices.