Senior Solidity Architect – Hybrid & High-Impact Blockchain

Placements24; Noord-Kaap; Hybrid; ZAR 900,000 - 1,400,000; Full time

Benefits offered by this job

Hybrid work model

Groundbreaking blockchain projects

Professional development opportunities

Collaborative and innovative work-cale

Job summary

Placements24 in Kimberley (Northern Cape, ZA) seeks a Senior Blockchain Developer with deep Solidity expertise to design, develop, and deploy secure smart contracts and dApps. You will collaborate with product teams to specify requirements, review code, and stay ahead of DeFi innovations in a hybrid in-office/remote setup.

The role requires strong Solidity and EVM knowledge, familiarity with Web3 libraries, and a solid security mindset to drive scalable blockchain solutions.

Qualifications

• Proven experience as a Blockchain Developer with a focus on Solidity.
• Deep understanding of Ethereum Virtual Machine (EVM) and blockchain fundamentals.
• Experience with Web3 libraries (ethers.js, web3.js) and related tooling.
• Familiarity with development tools like Truffle, Hardhat, Ganache.
• Knowledge of security best practices for smart contracts and auditing.

Responsibilities

• Design, develop, test, and deploy secure smart contracts using Solidity.
• Architect and implement dApps and blockchain-based solutions.
• Collaborate with product managers and engineers to define specs.
• Conduct code reviews to ensure quality, security and best practices.
• Research latest blockchain advancements and DeFi trends.
• Troubleshoot complex issues in smart contracts and infrastructure.
• Contribute to technical strategy and roadmap for blockchain initiatives.
• Optimize contract performance and gas efficiency.
• Ensure compliance with security standards throughout development.

Skills

Solidity development

EVM understanding

Web3 libraries

Other languages (JS/Node.js/Python/Go)

Truffle/Hardhat/Ganache

Smart contract security

Problem solving

Communication & teamwork

Education

Bachelor's degree in CS/Engineering or related field

Tools

Truffle

Hardhat

Ganache

Job description

Placements24 in Kimberley (Northern Cape, ZA) seeks a Senior Blockchain Developer with deep Solidity expertise to design, develop, and deploy secure smart contracts and dApps. You will collaborate with product teams to specify requirements, review code, and stay ahead of DeFi innovations in a hybrid in-office/remote setup.

The role requires strong Solidity and EVM knowledge, familiarity with Web3 libraries, and a solid security mindset to drive scalable blockchain solutions.