Senior Smart Contract Engineer

Placements24; Klerksdorp; Hybrid; ZAR 1,976,000 - 2,964,000; Full time

Benefits offered by this job

Remote work

Token options

Health insurance and wellness programs

Home office setup allowance

Job summary

Placements24 is seeking a Senior Smart Contract Engineer to join a fully remote team in the crypto and blockchain space. You will own the design, implementation, testing, and deployment of secure smart contracts powering decentralized applications, collaborating with product managers and engineers across time zones.

You will optimize gas efficiency, conduct audits, and mentor junior developers while staying current with security best practices and evolving blockchain protocols.

Qualifications

• Master's or Bachelor's degree in Computer Science, Engineering, or related field, or equivalent experience.
• 5+ years of software development experience, with a minimum of 3 years specifically focused on smart contract development.
• Deep expertise in Solidity and experience with related development frameworks (e.g., Hardhat, Truffle, Foundry).
• Strong understanding of blockchain principles, cryptography, and consensus mechanisms.
• Proven experience in writing secure, gas-efficient, and well-tested smart contracts.
• Familiarity with common smart contract vulnerabilities and mitigation techniques.
• Experience with version control systems (Git) and CI/CD pipelines.
• Excellent problem-solving, analytical, and debugging skills.
• Strong communication and collaboration skills, suitable for a remote team environment.
• Experience with other programming languages (e.g., Rust, Go, JavaScript) is a plus.

Responsibilities

• Design, audit, and deploy secure and efficient smart contracts on various blockchain platforms.
• Write comprehensive unit and integration tests for smart contracts to ensure functionality and security.
• Collaborate with product managers and other engineers to define smart contract requirements and features.
• Optimize smart contracts for gas efficiency and performance.
• Stay current with the latest advancements in smart contract development, security best practices, and blockchain protocols.
• Participate in code reviews, providing constructive feedback to peers.
• Contribute to the technical architecture and roadmap for smart contract development.
• Troubleshoot and resolve issues related to smart contract execution and deployment.
• Research and evaluate new blockchain technologies and tools relevant to smart contract development.
• Mentor junior engineers and share expertise within the team.

Skills

Problem solving

Cryptography

Debugging

Analytical skills

Remote collaboration

Education

Master's or Bachelor's in CS/Engineering

Tools

Solidity

Hardhat

Truffle

Foundry

Git

CI/CD

Job description

About the Role

Our client, a prominent innovator in the crypto and blockchain space, is seeking a highly skilled Senior Smart Contract Engineer to join their fully remote workforce. This role is perfect for an experienced developer who is passionate about creating secure, efficient, and reliable smart contracts that power decentralized applications. You will be responsible for the end-to-end development lifecycle of smart contracts, from design and implementation to testing and deployment, contributing directly to our core product offerings. As a remote-first company, we value asynchronous communication, autonomy, and delivering exceptional results regardless of location. This is an exceptional opportunity to contribute to groundbreaking projects and advance your career within the rapidly evolving world of blockchain technology from anywhere.

Key Responsibilities

• Design, develop, audit, and deploy secure and efficient smart contracts on various blockchain platforms (e.g., Ethereum, Solana).
• Write comprehensive unit and integration tests for smart contracts to ensure functionality and security.
• Collaborate with product managers and other engineers to define smart contract requirements and features.
• Optimize smart contracts for gas efficiency and performance.
• Stay current with the latest advancements in smart contract development, security best practices, and blockchain protocols.
• Participate in code reviews, providing constructive feedback to peers.
• Contribute to the technical architecture and roadmap for smart contract development.
• Troubleshoot and resolve issues related to smart contract execution and deployment.
• Research and evaluate new blockchain technologies and tools relevant to smart contract development.
• Mentor junior engineers and share expertise within the team.

Requirements

• Master's or Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent work experience.
• 5+ years of professional software development experience, with a minimum of 3 years specifically focused on smart contract development.
• Deep expertise in Solidity and experience with related development frameworks (e.g., Hardhat, Truffle, Foundry).
• Strong understanding of blockchain principles, cryptography, and consensus mechanisms.
• Proven experience in writing secure, gas-efficient, and well-tested smart contracts.
• Familiarity with common smart contract vulnerabilities and mitigation techniques.
• Experience with version control systems (Git) and CI/CD pipelines.
• Excellent problem-solving, analytical, and debugging skills.
• Strong communication and collaboration skills, suitable for a remote team environment.
• Experience with other programming languages (e.g., Rust, Go, JavaScript) is a plus.

Benefits

• Generous compensation package including base salary and token options.
• Fully remote role, offering significant work-life flexibility.
• Opportunity to work on cutting‑edge and impactful blockchain projects.
• Comprehensive health insurance and wellness programs.
• Allowance for home office setup and professional development.
• Engage with a forward-thinking and globally distributed team.