Blockchain Developer (DeFi Focus)

Placements24; Randburg; Remote; ZAR 900,000 - 1,300,000; Full time

Benefits offered by this job

Remote work options

Health benefits

Career growth opportunities

Generous PTO

Job summary

Placements24 in Randburg, Gauteng, seeks a Blockchain Developer focused on DeFi protocols to design, implement, and audit secure smart contracts and dApps. You will work closely with cross-functional teams to deliver scalable DeFi features and robust backend services built on blockchain technology.

The role requires strong Solidity/EVM, DeFi protocol experience, and a passion for crypto innovation. Remote options are available, with a fast-growing environment offering rapid career advancement.

Qualifications

• Proven experience as a Blockchain Developer focused on DeFi protocols.
• Proficiency in smart contract development using Solidity and familiarity with the Ethereum Virtual Machine (EVM).
• Experience with DeFi protocols, including tokenomics, liquidity provision, and automated market makers.
• Familiarity with blockchain development tools and frameworks (Hardhat, Truffle, Ganache).
• Experience with Web3 libraries (ethers.js, web3.js) and interacting with blockchain nodes.
• Solid understanding of blockchain fundamentals, cryptography, and security best practices.
• Strong analytical and problem‑solving skills.
• Excellent communication and collaboration abilities.

Responsibilities

• Design, develop, and implement secure and efficient smart contracts for DeFi protocols (e.g., lending, trading, yield farming).
• Build and maintain decentralized applications (dApps) and their underlying infrastructure.
• Write high-quality, testable, and well-documented code in languages like Solidity.
• Collaborate with product managers, designers, and other engineers to define and implement new features.
• Conduct rigorous code reviews and security audits to ensure the integrity of smart contracts.
• Integrate blockchain solutions with existing financial systems and third‑party APIs.
• Troubleshoot and resolve complex technical issues in development and production environments.
• Stay updated on the latest trends, research, and developments in the DeFi and broader blockchain space.
• Contribute to architectural decisions and technical strategy for the platform.
• Ensure compliance with security best practices and industry standards in all development efforts.

Skills

Solidity

DeFi protocols

EVM

Smart contracts

Security auditing

Cryptography

Web3

Team collaboration

Analytical thinking

Education

Bachelor's degree in CS/Engineering or related field

Tools

Hardhat

Truffle

Ganache

ethers.js

web3.js

Job description

About the Role

Our client, a fast-growing decentralized finance (DeFi) platform, is seeking a skilled Blockchain Developer with a specialization in DeFi protocols to join their innovative team. This role, based in Randburg, Gauteng , offers the chance to work on complex financial instruments built on blockchain technology. You will be responsible for developing, testing, and deploying smart contracts, dApps, and backend systems that power our next-generation DeFi services. This is an excellent opportunity for a passionate developer to contribute to the rapidly evolving crypto and blockchain landscape and build solutions that are shaping the future of finance. We are looking for individuals who are driven by innovation and possess a strong understanding of decentralized finance principles and technologies. Join a forward-thinking company dedicated to making financial services more accessible and efficient.

Key Responsibilities

• Design, develop, and implement secure and efficient smart contracts for DeFi protocols (e.g., lending, trading, yield farming).
• Build and maintain decentralized applications (dApps) and their underlying infrastructure.
• Write high-quality, testable, and well-documented code in languages like Solidity.
• Collaborate with product managers, designers, and other engineers to define and implement new features.
• Conduct rigorous code reviews and security audits to ensure the integrity of smart contracts.
• Integrate blockchain solutions with existing financial systems and third‑party APIs.
• Troubleshoot and resolve complex technical issues in development and production environments.
• Stay updated on the latest trends, research, and developments in the DeFi and broader blockchain space.
• Contribute to architectural decisions and technical strategy for the platform.
• Ensure compliance with security best practices and industry standards in all development efforts.

Requirements

• Proven experience as a Blockchain Developer, with a strong focus on Decentralized Finance (DeFi).
• Proficiency in smart contract development using Solidity and familiarity with the Ethereum Virtual Machine (EVM).
• Experience with DeFi protocols, including understanding of tokenomics, liquidity provision, and automated market makers.
• Familiarity with blockchain development tools and frameworks (e.g., Hardhat, Truffle, Ganache).
• Experience with Web3 libraries (e.g., ethers.js, web3.js) and interacting with blockchain nodes.
• Solid understanding of blockchain fundamentals, cryptography, and security best practices.
• Strong analytical and problem‑solving skills.
• Excellent communication and collaboration abilities.
• Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent experience.
• A genuine passion for the crypto and blockchain revolution.

Benefits

• Competitive salary and attractive bonus structure.
• Comprehensive health and wellness benefits.
• Opportunities for rapid career growth and professional development.
• Remote work options available, offering flexibility.
• Chance to work on highly innovative and impactful DeFi projects.
• Collaborative and forward-thinking work culture in Randburg .
• Generous paid time off and company holidays.
• Access to cutting‑edge technologies and industry events.
• Be a part of a team that is revolutionizing the financial industry.