Senior Blockchain Developer (Smart Contracts & dApps)

Placements24; East London; Hybrid; ZAR 900,000 - 1,300,000; Full time

Benefits offered by this job

Competitive salary

Innovative projects

Professional development

Collaborative environment

Impactful solutions

Job summary

Placements24 is seeking a Senior Blockchain Developer for our East London, Eastern Cape team. You will design, develop, and deploy secure smart contracts and dApps, collaborating with cross-functional teams to deliver scalable blockchain solutions.

You will mentor juniors, review code, and stay ahead of industry advances in cryptography and consensus methods. A strong focus on security and performance is essential.

Qualifications

• Bachelor's degree or equivalent practical experience in CS/Engineering.
• Proficiency in blockchain concepts: consensus, distributed ledgers, cryptography.
• Experience with smart contracts and dApps.
• Familiarity with frontend tech (React, Vue, Angular) for dApp integration is a plus.

Responsibilities

• Design, develop, test, and deploy secure smart contracts on Ethereum, BSC, Solana.
• Build and maintain decentralized applications with smart contract backends.
• Collaborate with product managers, designers, and engineers to define features.
• Conduct code reviews, security audits, and performance optimizations for smart contracts.
• Stay updated on blockchain tech, cryptography, and consensus mechanisms.

Skills

Solidity

Vyper

Rust

Education

Bachelor's degree in Computer Science/Engineering

Tools

Truffle

Hardhat

Web3.js

Ethers.js

Job description

About the Role

Our client, a rapidly growing innovator in the decentralized finance space, is seeking a highly skilled and experienced Senior Blockchain Developer to join their dynamic team. This pivotal role is based in the vibrant tech hub of East London, Eastern Cape. You will be instrumental in designing, developing, and deploying cutting‑edge blockchain solutions, including smart contracts and decentralized applications (dApps), that will shape the future of finance. We are looking for a forward‑thinking individual with a deep understanding of blockchain protocols, security best practices, and the ability to translate complex requirements into robust, scalable code. This position offers an exciting opportunity to work with a passionate team on groundbreaking projects that have a real‑world impact.

Key Responsibilities

• Design, develop, test, and deploy secure and efficient smart contracts on various blockchain platforms (e.g., Ethereum, Binance Smart Chain, Solana).
• Build and maintain decentralized applications (dApps), ensuring seamless integration with smart contract backends.
• Collaborate with product managers, designers, and other engineers to define and implement new blockchain features and protocols.
• Conduct thorough code reviews, security audits, and performance optimizations for smart contracts and dApp components.
• Stay abreast of the latest advancements in blockchain technology, cryptography, and consensus mechanisms.
• Troubleshoot and resolve complex technical issues related to blockchain infrastructure and application performance.
• Contribute to technical documentation, architectural design, and knowledge sharing within the engineering team.
• Mentor junior developers and provide technical guidance on blockchain development best practices.

Requirements

• Proven experience as a Blockchain Developer or Software Engineer with a focus on blockchain technologies.
• Proficiency in smart contract programming languages such as Solidity, Vyper, or Rust.
• Strong understanding of blockchain fundamentals, including consensus algorithms, distributed ledger technology, and cryptography.
• Experience with blockchain frameworks and development tools (e.g., Truffle, Hardhat, Web3.js, Ethers.js).
• Familiarity with front‑end development technologies (React, Vue, Angular) for dApp integration is a plus.
• Excellent problem‑solving skills and a meticulous attention to detail, particularly concerning security.
• Strong communication and collaboration abilities to work effectively in a team environment.
• Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience.

Benefits

• Competitive salary package commensurate with experience.
• Opportunity to work on innovative projects in a rapidly evolving industry.
• Professional development and continuous learning opportunities.
• Collaborative and supportive work environment.
• Contribution to impactful decentralized solutions.