Senior Blockchain Developer (DeFi Focus)

Placements24; Johannesburg; Hybrid; ZAR 900,000 - 1,500,000; Full time

Benefits offered by this job

Bonuses

Health insurance

Retirement savings plans

Professional development

Hybrid work arrangement

Paid time off

Job summary

Placements24 is seeking a Senior Blockchain Developer in Johannesburg, Gauteng, to design, develop, and deploy cutting-edge blockchain solutions. The role involves building secure smart contracts and scalable dApps across major networks, with a strong emphasis on security and performance.

You will mentor junior engineers, collaborate with product teams, and help shape the architecture of scalable blockchain systems in a dynamic, hybrid work environment.

Qualifications

• 5+ years of professional software development experience, with at least 3 years focused on blockchain technology.
• Proven experience in developing and deploying smart contracts on major blockchain networks.
• Strong understanding of blockchain fundamentals, consensus mechanisms, and cryptographic principles.

Responsibilities

• Design, develop, and implement secure and efficient smart contracts.
• Build and maintain decentralized applications (dApps) on Ethereum, BSC, and Solana.
• Collaborate with product managers and engineers to deliver new features and enhancements.
• Conduct thorough code reviews, ensuring security and performance best practices.
• Optimize existing blockchain architectures for scalability, throughput, and cost-efficiency.
• Integrate blockchain solutions with existing financial systems and third-party APIs.
• Stay abreast of developments in blockchain tech, cryptography, and DeFi protocols.
• Troubleshoot complex blockchain infrastructure and dApp issues.
• Contribute to technical documentation and knowledge sharing.
• Mentor junior developers and foster ongoing learning.

Skills

Smart contracts

DApps development

Blockchain fundamentals

Solidity

Rust

Go

Web3.js

Ethers.js

DeFi protocols

Cryptography

Mentoring

Code reviews

Education

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

Tools

Solidity

Rust

Go

Web3.js

Ethers.js

Vyper

Job description

About the Role

Our client, a leading innovator in the decentralized finance (DeFi) space, is seeking a highly skilled and motivated Senior Blockchain Developer to join their dynamic team in Johannesburg, Gauteng. This is a pivotal role where you will be instrumental in designing, developing, and deploying cutting-edge blockchain solutions. You will work on complex smart contracts, develop robust decentralized applications (dApps), and contribute to the architecture of scalable blockchain networks. The ideal candidate possesses a deep understanding of blockchain principles, smart contract languages, and a passion for pushing the boundaries of financial technology. This hybrid role offers a balanced approach, combining collaborative in-office work with the flexibility of remote engagement. You will be part of a forward-thinking company dedicated to building the future of finance.

Key Responsibilities

• Design, develop, and implement secure and efficient smart contracts using languages such as Solidity, Rust, or Go.
• Build and maintain decentralized applications (dApps) on various blockchain platforms, including Ethereum, Binance Smart Chain, and Solana.
• Collaborate with product managers and other engineers to define and deliver new features and enhancements.
• Conduct thorough code reviews, ensuring adherence to best practices in security and performance.
• Optimize existing blockchain architectures for scalability, throughput, and cost-efficiency.
• Integrate blockchain solutions with existing financial systems and third-party APIs.
• Stay abreast of the latest developments in blockchain technology, cryptography, and DeFi protocols.
• Troubleshoot and resolve complex technical issues related to blockchain infrastructure and dApps.
• Contribute to technical documentation and knowledge sharing within the engineering team.
• Mentor junior developers and foster a culture of continuous learning and innovation.

Requirements

• Bachelor's or Master's degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
• 5+ years of professional software development experience, with at least 3 years focused on blockchain technology.
• Proven experience in developing and deploying smart contracts on major blockchain networks.
• Proficiency in at least one smart contract programming language (Solidity, Rust, Vyper).
• Strong understanding of blockchain fundamentals, consensus mechanisms, and cryptographic principles.
• Experience with web3 libraries (e.g., Web3.js, Ethers.js) and dApp development frameworks.
• Familiarity with DeFi protocols, AMMs, lending platforms, and stablecoins.
• Experience with performance optimization and security best practices in blockchain development.
• Excellent problem-solving and analytical skills.
• Strong communication and teamwork abilities, especially in a hybrid work environment.
• Knowledge of Golang or Node.js for backend development is a plus.

Benefits

• Our client offers a highly competitive compensation package and a comprehensive benefits program.
• This includes a generous annual salary, performance-based bonuses, comprehensive health insurance, and retirement savings plans.
• Employees benefit from opportunities for professional development, including attending industry conferences and pursuing certifications.
• You'll also enjoy a flexible hybrid work arrangement, ample paid time off, and access to cutting-edge technology in a stimulating and collaborative work environment.
• Join a company that values innovation and employee growth in Johannesburg, Gauteng.