Blockchain Developer - Smart Contracts Expert

Placements24; Klerksdorp; On-site; ZAR 700,000 - 1,200,000; Full time

Benefits offered by this job

Competitive salary

Health benefits

Learning opportunities

Modern office

Job summary

Placements24 is seeking a skilled Blockchain Developer in Klerksdorp, North West to design, develop and audit production-grade smart contracts. You will work on Ethereum-compatible platforms using Solidity, collaborate with product teams, and ensure secure, gas-efficient code.

The role requires strong knowledge of EVM, Hardhat/Truffle/Foundry, and best practices in decentralised finance. A bachelor’s degree or equivalent experience is expected, with excellent teamwork and communication.

Qualifications

• Proven production-ready smart contract experience.
• Strong grasp of Solidity and EVM nuances.
• Familiar with security best practices and audits.

Responsibilities

• Design, develop, test, and deploy smart contracts on Ethereum-compatible platforms.
• Write clean, secure Solidity code and optimize for gas efficiency.
• Collaborate with product managers to define requirements.
• Audit and fix vulnerabilities in smart contracts.
• Integrate contracts with front-end and backend systems.
• Stay updated on blockchain developments and best practices.

Skills

Solidity

Ethereum

EVM

Smart contract security

Git

Analytical thinking

Team collaboration

Education

Bachelor's degree in CS/SE or related field

Tools

Hardhat

Truffle

Foundry

Job description

About the Role Our client is a rapidly growing fintech company that leverages blockchain technology to revolutionize financial services. We are seeking a talented and motivated Blockchain Developer with expertise in smart contracts to join our core engineering team in Klerksdorp, North West. In this role, you will be instrumental in designing, developing, and implementing secure and efficient smart contracts that power our innovative financial products. You will work with cutting-edge technologies and contribute to building a robust and scalable blockchain infrastructure. The ideal candidate has a deep understanding of smart contract programming languages, blockchain protocols, and the security implications of decentralized applications. This is an excellent opportunity to work on challenging projects in a collaborative environment based in Klerksdorp, North West.

Key Responsibilities

• Design, develop, test, and deploy smart contracts on various blockchain platforms (e.g., Ethereum, BSC).
• Write clean, efficient, and secure code in Solidity or other relevant smart contract languages.
• Collaborate with product managers and other developers to define smart contract requirements and specifications.
• Perform thorough testing and auditing of smart contracts to identify and fix vulnerabilities.
• Optimize smart contracts for gas efficiency and performance.
• Integrate smart contracts with front-end applications and backend systems.
• Stay up-to-date with the latest developments in blockchain technology and smart contract best practices.
• Participate in code reviews and contribute to improving team development standards.
• Troubleshoot and resolve issues related to smart contract functionality and deployment.

Requirements

• Proven experience developing and deploying production-ready smart contracts.
• Expertise in Solidity, with a strong understanding of Ethereum Virtual Machine (EVM) and its nuances.
• Familiarity with blockchain development frameworks like Hardhat, Truffle, or Foundry.
• Knowledge of common smart contract vulnerabilities (e.g., reentrancy, integer overflow) and mitigation techniques.
• Understanding of blockchain fundamentals, including consensus algorithms and token standards (e.g., ERC-20, ERC-721).
• Experience with version control systems like Git.
• Strong analytical and problem-solving skills.
• Excellent communication and teamwork abilities.
• Bachelor's degree in Computer Science, Software Engineering, or a related field, or equivalent professional experience.

Benefits

Our client provides a competitive salary, excellent health benefits, performance bonuses, and opportunities for continuous learning and professional development within the blockchain space. You will work in a modern office environment in Klerksdorp, North West, with access to the latest tools and technologies. Join a passionate team dedicated to innovation and contribute to shaping the future of decentralized finance.