Remote Senior Blockchain Engineer | Smart Contracts & DeFi

Placements24; Johannesburg; Hybrid; ZAR 900,000 - 1,700,000; Full time

Benefits offered by this job

Competitive salary

Fully remote work environment

Health, dental, vision insurance

Generous paid time off

Professional development opportunities

Virtual team-building

Job summary

Placements24 seeks a Senior Blockchain Developer to join a remote-first engineering team shaping the future of DeFi. You will design, develop, and deploy robust smart contracts and decentralized systems across platforms, collaborating with cryptographers and product managers.

The role requires deep expertise in Solidity and blockchain fundamentals, with experience in frameworks like Truffle, Hardhat, and Ganache. A strong backend scripting capability completes the profile.

Qualifications

• Proven experience as a Blockchain Developer or Smart Contract Engineer.
• Proficiency in smart contract development languages such as Solidity.
• Experience with blockchain frameworks and development tools (e.g., Truffle, Hardhat, Ganache).
• Solid understanding of blockchain principles, consensus mechanisms, and cryptographic concepts.
• Experience with at least one major blockchain platform (e.g., Ethereum, Binance Smart Chain, Polygon).
• Familiarity with web3.js, ethers.js, or similar libraries for interacting with blockchains.
• Proficiency in at least one backend programming language (e.g., Node.js, Python, Go).
• Strong problem-solving skills and the ability to work independently in a remote setting.

Responsibilities

• Design, develop, and deploy secure and efficient smart contracts on various blockchain platforms (e.g., Ethereum, Polygon, Solana) using Solidity, Rust, or Vyper.
• Architect and implement scalable blockchain-based applications and decentralized systems.
• Conduct thorough code reviews, testing, and auditing of smart contracts to ensure security and prevent vulnerabilities.
• Collaborate with cross-functional teams to define, design, and ship new features.
• Integrate blockchain components with existing backend systems and user interfaces.
• Research and stay abreast of the latest advancements in blockchain technology, cryptography, and decentralized protocols.
• Troubleshoot, debug, and upgrade existing blockchain infrastructure and applications.
• Mentor junior developers and contribute to the team's overall technical growth and knowledge sharing.

Skills

Smart contract

Solidity

Rust

Web3.js

Tools

Truffle

Hardhat

Ganache

Job description

Placements24 seeks a Senior Blockchain Developer to join a remote-first engineering team shaping the future of DeFi. You will design, develop, and deploy robust smart contracts and decentralized systems across platforms, collaborating with cryptographers and product managers.

The role requires deep expertise in Solidity and blockchain fundamentals, with experience in frameworks like Truffle, Hardhat, and Ganache. A strong backend scripting capability completes the profile.