Senior Blockchain Engineer — Remote dApps & Smart Contracts

Placements24; Benoni; Hybrid; ZAR 2,369,000 - 3,553,000; Full time

Benefits offered by this job

Fully remote

Job summary

Placements24 is seeking a Senior Blockchain Engineer to join a fully remote team shaping the future of Web3. You will design, implement, and deploy robust smart contracts and backend services powering scalable dApps.

The ideal candidate brings 5+ years of software engineering, with 3+ years in blockchain, and deep expertise in Solidity, Rust, Move, and modern development frameworks. Join a remote-first, innovative crypto environment.

Qualifications

• 5+ years of professional software engineering experience, with at least 3 years focused on blockchain development.
• Proficiency in Solidity, Rust, or Move for smart contracts.
• Experience with blockchain development frameworks (Hardhat, Truffle, Anchor).
• Strong understanding of distributed systems, cryptography, and consensus mechanisms.
• Experience with backend development languages (Node.js, Go, Python).
• Familiarity with Web3 libraries and tools for interacting with blockchains.
• Proven ability to design and implement secure and scalable smart contracts.
• Excellent problem-solving and debugging skills; strong remote collaboration abilities.

Responsibilities

• Design, develop, test, and deploy smart contracts on Ethereum, Polygon, Solana, and more.
• Build and maintain backend services and APIs for dApps.
• Architect scalable, secure blockchain solutions with cost-efficiency.
• Collaborate with frontend developers to integrate blockchain features.
• Conduct thorough code reviews and enforce security best practices.
• Troubleshoot complex blockchain issues and optimize performance.
• Stay updated on Web3 developments and cryptographic techniques.
• Contribute to technical roadmaps and architectural decisions.
• Mentor junior engineers and share knowledge across the team.
• Produce comprehensive technical documentation of code and systems.

Skills

Solidity

Rust

Move

Distributed systems

Backend development

Web3 libraries

Security & cryptography

Code reviews

Remote collaboration

Education

Bachelor's/Tough Master in CS or related

Master's degree

Equivalent practical experience

Tools

Hardhat

Truffle

Anchor

Job description

Placements24 is seeking a Senior Blockchain Engineer to join a fully remote team shaping the future of Web3. You will design, implement, and deploy robust smart contracts and backend services powering scalable dApps.

The ideal candidate brings 5+ years of software engineering, with 3+ years in blockchain, and deep expertise in Solidity, Rust, Move, and modern development frameworks. Join a remote-first, innovative crypto environment.