Senior Smart Contract Engineer (Remote)

Placements24; Pretoria; Hybrid; ZAR 900,000 - 1,600,000; Full time

Benefits offered by this job

Competitive salary

Fully remote work

Health benefits

Generous paid time off

Professional development budget

Job summary

Placements24 is seeking a highly experienced Senior Smart Contract Engineer for a fully remote role. You will design, develop, test, and deploy secure on-chain contracts across Ethereum-compatible platforms, collaborating with a global team to translate complex requirements into robust Solidity, Vyper, or Rust code.

You will conduct security audits, implement cryptographic patterns, review code, and mentor junior engineers while staying current with DeFi standards and best practices.

Qualifications

• Minimum of 5 years of software development experience, with at least 3 years focused on smart contract development.
• Expertise in Solidity and the Ethereum Virtual Machine (EVM).
• Strong understanding of blockchain principles, DeFi, and token standards (ERC-20, ERC-721, etc.).
• Experience with smart contract development frameworks (e.g., Hardhat, Truffle, Foundry).
• Proficiency in unit testing and integration testing for smart contracts.
• Knowledge of common smart contract security vulnerabilities and mitigation techniques.
• Experience with version control systems (Git) and CI/CD pipelines.
• Excellent analytical and problem-solving skills.
• Strong communication and collaboration skills, adept at working in a remote environment.
• Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field, or equivalent industry experience.

Responsibilities

• Design, develop, and implement secure and efficient smart contracts on various blockchain platforms (e.g., Ethereum, Polygon, Solana).
• Write high-quality, well-tested, and maintainable smart contract code using languages like Solidity, Vyper, or Rust.
• Collaborate with product managers and other engineers to define smart contract requirements and architecture.
• Conduct rigorous code reviews and security audits to identify and mitigate potential vulnerabilities.
• Develop and maintain comprehensive test suites for smart contracts, ensuring robustness and reliability.
• Research and implement advanced cryptographic techniques and blockchain patterns.
• Contribute to the development of blockchain infrastructure and tooling.
• Stay current with the latest developments, best practices, and security considerations in the blockchain space.
• Mentor junior engineers and share knowledge within the team.

Job description

About the Role Our client is a rapidly growing blockchain development studio focused on creating secure and innovative decentralized solutions. We are currently seeking a highly experienced Senior Smart Contract Engineer to join our dedicated, remote-first team. In this role, you will be instrumental in designing, developing, testing, and deploying high-quality smart contracts and blockchain protocols. You will work closely with our product and engineering teams to translate complex requirements into secure and efficient on-chain logic. As a fully remote position, this opportunity offers exceptional flexibility and the chance to collaborate with a globally distributed team of experts. We are looking for individuals who are passionate about the potential of blockchain technology and possess a deep understanding of smart contract development, security best practices, and the broader decentralized ecosystem. This role is critical to our mission of building trustless systems and driving mainstream adoption of blockchain technology. The position offers the complete flexibility of remote work, with the understanding that our team is globally distributed, conceptually near Pretoria, Gauteng, ZA , but operating worldwide.

Key Responsibilities

• Design, develop, and implement secure and efficient smart contracts on various blockchain platforms (e.g., Ethereum, Polygon, Solana).
• Write high-quality, well-tested, and maintainable smart contract code using languages like Solidity, Vyper, or Rust.
• Collaborate with product managers and other engineers to define smart contract requirements and architecture.
• Conduct rigorous code reviews and security audits to identify and mitigate potential vulnerabilities.
• Develop and maintain comprehensive test suites for smart contracts, ensuring robustness and reliability.
• Research and implement advanced cryptographic techniques and blockchain patterns.
• Contribute to the development of blockchain infrastructure and tooling.
• Stay current with the latest developments, best practices, and security considerations in the blockchain space.
• Mentor junior engineers and share knowledge within the team.

Requirements

• Minimum of 5 years of experience in software development, with at least 3 years focused on smart contract development.
• Expertise in Solidity and the Ethereum Virtual Machine (EVM).
• Strong understanding of blockchain principles, decentralized finance (DeFi), and token standards (ERC-20, ERC-721, etc.).
• Experience with smart contract development frameworks (e.g., Hardhat, Truffle, Foundry).
• Proficiency in unit testing and integration testing for smart contracts.
• Knowledge of common smart contract security vulnerabilities and mitigation techniques.
• Experience with version control systems (Git) and CI/CD pipelines.
• Excellent analytical and problem-solving skills.
• Strong communication and collaboration skills, adept at working in a remote environment.
• Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field, or equivalent industry experience.

Benefits

This role offers a competitive salary, the flexibility of fully remote work, and the opportunity to be part of a cutting-edge technology company. Our client provides comprehensive health benefits, generous paid time off, and a dedicated budget for professional development, including attending conferences and pursuing certifications. You will work on challenging and impactful projects, collaborate with a talented international team, and have significant opportunities for career growth. We foster a supportive and inclusive remote work culture that encourages innovation and continuous learning. Join us in building the future of decentralized technologies from wherever you are.