Smart Contract Developer

Placements24; Vereeniging; Hybrid; ZAR 600,000 - 900,000; Full time

Benefits offered by this job

Hybrid work model

Competitive salary and bonuses

Generous paid time off

Health insurance options

Job summary

Placements24 in Vereeniging, Gauteng, seeks a Smart Contract Developer to design, implement, test, and audit secure contracts on Ethereum-compatible networks. You will write Solidity, review code, and contribute to DeFi dApps with a strong emphasis on security and reliability.

Join a fast-growing fintech startup offering hybrid work in Vereeniging, with opportunities to work on cutting-edge blockchain technology, scalable architecture, and a collaborative culture.

Qualifications

• Proven experience as Smart Contract/Blockchain developer.
• Strong Solidity and EVM proficiency.
• Experience with Ethereum-compatible networks and deployment.
• Knowledge of ERC-20 and ERC-721 standards.
• Security-focused with audit experience.
• Ability to write unit and integration tests.
• Understanding of cryptography and blockchain fundamentals.
• Bachelor's degree or equivalent experience.

Responsibilities

• Develop, test, and deploy smart contracts on Ethereum-compatible chains.
• Write secure, efficient Solidity code.
• Review code and audit contracts to mitigate vulnerabilities.
• Develop and maintain dApps and integrate with frontends and backends.
• Collaborate with engineers to define requirements and specs.
• Document deployment procedures and contract logic.

Skills

Solidity

EVM

Smart contract security

Testing (unit/integration)

Truffle/Hardhat/Foundry

Cryptography basics

Education

Bachelor's degree in Computer Science/Engineering or related field

Tools

Truffle

Hardhat

Foundry

OpenZeppelin

Job description

About the Role

Our client, a cutting-edge fintech startup focused on decentralized finance (DeFi), is seeking a talented Smart Contract Developer to join their growing team in Vereeniging, Gauteng . This is an exciting opportunity to contribute directly to the development of secure and innovative financial products built on blockchain technology. You will be responsible for designing, implementing, and auditing smart contracts that form the backbone of our platform. This role requires a deep understanding of blockchain principles and a passion for building secure, efficient, and reliable code in the crypto and blockchain space. We value creativity, problem-solving, and a commitment to excellence. Join us in shaping the future of finance through decentralized innovation.

Key Responsibilities

• Develop, test, and deploy smart contracts on various blockchain platforms (e.g., Ethereum, Polygon).
• Write clean, secure, and efficient code in Solidity or other relevant smart contract languages.
• Collaborate with the engineering team to define smart contract requirements and specifications.
• Perform thorough code reviews and security audits to identify and mitigate vulnerabilities.
• Implement and maintain decentralized applications (dApps) and their associated smart contracts.
• Integrate smart contracts with frontend interfaces and backend services.
• Troubleshoot and debug smart contract issues in development and production environments.
• Stay up-to-date with the latest advancements in smart contract development and blockchain technology.
• Contribute to the overall architecture and design of the blockchain platform.
• Document smart contract logic, functionality, and deployment procedures.

Requirements

• Proven experience as a Smart Contract Developer or Blockchain Developer.
• Strong proficiency in Solidity and experience with the Ethereum Virtual Machine (EVM).
• Familiarity with smart contract development frameworks like Truffle, Hardhat, or Foundry.
• Understanding of blockchain fundamentals, cryptography, and token standards (e.g., ERC-20, ERC-721).
• Experience with security best practices for smart contract development and auditing.
• Knowledge of common smart contract vulnerabilities and how to prevent them.
• Ability to write comprehensive unit and integration tests for smart contracts.
• Good understanding of the broader crypto and blockchain ecosystem.
• Strong problem-solving skills and attention to detail.
• Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent experience.

Benefits

• Competitive salary and performance-based bonuses.
• Comprehensive health insurance and retirement plan options.
• Opportunities for professional growth and learning in a rapidly evolving industry.
• Hybrid work model providing a balance between office and remote work in Vereeniging .
• Chance to work on innovative projects that are redefining finance.
• Collaborative and supportive team culture.
• Generous paid time off.
• Access to cutting-edge technologies and tools.
• Direct impact on the development of a leading DeFi platform.