Senior Blockchain Developer - Decentralized Applications

Placements24; Midrand; Hybrid; ZAR 1,000,000 - 1,600,000; Full time

Benefits offered by this job

Health insurance

Hybrid work arrangement

Professional development

Job summary

Placements24 is seeking a Senior Blockchain Developer to design, build, and deploy secure smart contracts and dApps for a rapidly growing DeFi ecosystem in Midrand, Gauteng. You will work across Ethereum, Solana, and Polygon, ensuring robust architecture and scalable solutions.

The role requires 5+ years in blockchain, expertise in Solidity, Rust or Go, and familiarity with Hardhat, Truffle, and Web3.js. Hybrid work combines in-office collaboration in Midrand with remote flexibility.

Qualifications

• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field
• 5+ years of experience as a Blockchain Developer or Smart Contract Engineer
• Proficiency in Solidity, Rust, or Go

Responsibilities

• Design, develop, and implement secure and efficient smart contracts on Ethereum, Solana, Polygon and other platforms
• Develop and maintain decentralized applications (dApps) with focus on UX and performance
• Integrate blockchain with existing systems and external APIs
• Conduct code reviews, unit testing, and integration testing to ensure quality and reliability
• Research blockchain protocols, security vulnerabilities, and industry trends
• Collaborate with cross-functional teams to define, design, and ship new features
• Troubleshoot, debug, and upgrade existing smart contracts and dApps
• Contribute to architectural decisions and technical roadmap of blockchain initiatives

Skills

Solidity

Rust

Go

Hardhat

Truffle

Web3.js

Education

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

Tools

Git

Job description

About the Role

Our client, a rapidly growing force in the decentralized finance (DeFi) space, is seeking an experienced and innovative Senior Blockchain Developer to join their dynamic team in Midrand, Gauteng. This role is pivotal in shaping the future of our client's blockchain ecosystem. You will be instrumental in designing, developing, and deploying cutting-edge decentralized applications (dApps) and smart contracts that leverage blockchain technology to its fullest potential. The ideal candidate possesses a deep understanding of blockchain architecture, consensus mechanisms, and the security best practices essential for building robust and scalable solutions. You will collaborate closely with product managers, designers, and other engineers to translate complex requirements into elegant and efficient code. This is a unique opportunity to work with emerging technologies and make a significant impact in a fast-paced, innovative industry, with the flexibility of a Hybrid work model combining in-office collaboration with remote flexibility in Midrand, Gauteng.

Key Responsibilities

• Design, develop, and implement secure and efficient smart contracts on various blockchain platforms (e.g., Ethereum, Solana, Polygon).
• Develop and maintain decentralized applications (dApps) with a focus on user experience and performance.
• Integrate blockchain technology with existing systems and external APIs.
• Conduct thorough code reviews, unit testing, and integration testing to ensure the quality and reliability of blockchain solutions.
• Research and stay updated on the latest blockchain protocols, security vulnerabilities, and industry trends.
• Collaborate with cross-functional teams to define, design, and ship new features.
• Troubleshoot, debug, and upgrade existing smart contracts and dApps.
• Contribute to the architectural decisions and technical roadmap of the blockchain initiatives.

Requirements

• Bachelor's or Master's degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
• Proven experience (5+ years) as a Blockchain Developer or Smart Contract Engineer.
• Strong proficiency in blockchain development languages such as Solidity, Rust, or Go.
• Experience with popular blockchain frameworks and tools (e.g., Hardhat, Truffle, Web3.js).
• Deep understanding of cryptographic principles, consensus algorithms, and distributed ledger technologies.
• Familiarity with DeFi protocols and NFT standards.
• Experience with version control systems like Git.
• Excellent problem-solving and analytical skills.
• Strong communication and teamwork abilities, essential for collaboration in our Midrand, Gauteng office.

Benefits

• Competitive salary package of R per annum.
• Comprehensive health insurance and wellness programs.
• Opportunities for professional development and continuous learning in the rapidly evolving blockchain space.
• Be part of a forward-thinking company shaping the future of finance.
• Access to cutting-edge technology and a collaborative work environment.
• Hybrid work arrangement balancing office presence in Midrand, Gauteng with remote flexibility.
• Pension fund contributions and other employee benefits.