Senior Blockchain Developer - DeFi Specialist

Placements24; Klerksdorp; Hybrid; ZAR 900,000 - 1,600,000; Full time

Benefits offered by this job

Competitive salary

Health insurance

Hybrid work model

Stock options

Job summary

Placements24 is seeking a Senior Blockchain Developer to join their DeFi-focused team in Klerksdorp, North West. The role combines hands-on smart contract work with scalable blockchain applications in a hybrid office/remote setup.

You will design, test, and deploy Solidity-based contracts, build dApps, review code for security, and collaborate with product managers and engineers to deliver cutting-edge features.

Qualifications

• Bachelor's or Master's in CS/Engineering or equivalent practical experience.
• 5+ years of blockchain development with Solidity.
• Knowledge of ERC-20/ERC-721 tokens and DeFi protocols.
• Experience with testing, security audits, and code reviews.

Responsibilities

• Design, develop, test, and deploy smart contracts across blockchain platforms.
• Build and maintain dApps and integrate with existing blockchain infrastructure.
• Perform code reviews and security audits to ensure contract integrity.
• Collaborate with product managers, designers, and engineers on new features.
• Stay updated on DeFi protocols and security best practices.
• Optimize applications for performance, scalability, and cost.
• Troubleshoot blockchain network and contract issues.
• Contribute to architectural design of new blockchain solutions.

Skills

Blockchain development

Solidity

DeFi protocols

Web3 libraries

Problem-solving

Team collaboration

Education

BSc / MSc in CS or Engineering

Tools

Truffle

Hardhat

Foundry

Node.js

Python

Go

Job description

About the Role

Our client, a prominent player in the decentralized finance (DeFi) space, is seeking a highly skilled and motivated Senior Blockchain Developer to join their dynamic team. This is an exceptional opportunity to contribute to cutting-edge projects within the Crypto & Blockchain ecosystem, focusing on innovative DeFi solutions. You will be instrumental in designing, developing, and deploying secure and scalable smart contracts and blockchain applications. The role is based in the vibrant city of Klerksdorp, North West, ZA, offering a hybrid work model that balances collaborative in-office sessions with the flexibility of remote work. You will work alongside a team of experienced professionals passionate about shaping the future of finance. This position demands a deep understanding of blockchain principles, smart contract development, and a commitment to excellence in a fast-paced environment.

Key Responsibilities

• Design, develop, test, and deploy smart contracts on various blockchain platforms (e.g., Ethereum, Binance Smart Chain) using Solidity and other relevant programming languages.
• Develop and maintain decentralized applications (dApps) and integrate them with existing blockchain infrastructure.
• Conduct thorough code reviews and security audits to ensure the integrity and robustness of smart contracts and dApps.
• Collaborate with product managers, designers, and other engineers to define and implement new features and functionalities.
• Stay abreast of the latest developments in blockchain technology, DeFi protocols, and security best practices.
• Optimize blockchain applications for performance, scalability, and cost-efficiency.
• Troubleshoot and resolve complex technical issues related to blockchain networks and smart contracts.
• Participate in the architectural design of new blockchain solutions and protocols.

Requirements

• Bachelor's or Master's degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
• Proven experience (5+ years) in blockchain development, with a strong focus on smart contract programming (Solidity).
• In-depth knowledge of DeFi protocols, token standards (ERC-20, ERC-721), and decentralized exchange mechanisms.
• Experience with blockchain development frameworks such as Truffle, Hardhat, or Foundry.
• Proficiency in one or more backend programming languages (e.g., Node.js, Python, Go).
• Understanding of cryptography, distributed ledger technology, and consensus mechanisms.
• Experience with unit testing, integration testing, and security auditing of smart contracts.
• Familiarity with Web3 libraries and RPC APIs.
• Excellent problem-solving and analytical skills.
• Strong communication and teamwork abilities, essential for our Klerksdorp, North West, ZA team.

Benefits

• Competitive salary package commensurate with experience.
• Comprehensive health, dental, and vision insurance.
• Opportunities for professional development and continuous learning.
• Generous paid time off and holiday schedule.
• Access to cutting-edge technology and innovative projects.
• A collaborative and supportive work environment.
• Potential for performance-based bonuses and stock options.
• The chance to make a significant impact in the rapidly evolving DeFi industry.
• Hybrid work flexibility, combining office and remote work.