Senior Blockchain Developer - Decentralized Finance (DeFi) Expert

Placements24; Johannesburg; Híbrido; ZAR 900.000 - 1.700.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Performance bonuses

Health benefits

Professional development

Stock options

Hybrid work model

Descripción de la vacante

Placements24 is seeking a Senior Blockchain Developer in Johannesburg, SA, to lead design and development of secure DeFi protocols and scalable dApps. The role blends hands-on engineering with mentoring and architecture decisions in a hybrid setting.

You will architect, implement, review, and optimize smart contracts across multiple chains, collaborating with a cross-functional team to push the frontier of blockchain technology and crypto solutions.

Formación

• Minimum 5 years of software development experience, with at least 3 years in blockchain development.
• Strong proficiency in Solidity, Rust or Vyper.
• Deep understanding of blockchain fundamentals, consensus mechanisms, and tokenomics.
• Experience with DeFi protocols and EVM-based architectures.

Responsabilidades

• Design, develop, and deploy smart contracts on Ethereum, Binance Smart Chain, and Solana.
• Architect scalable dApps and DeFi protocols.
• Collaborate with product managers, designers and engineers to define new features.
• Conduct rigorous code reviews ensuring security and maintainability.
• Identify and mitigate security vulnerabilities in smart contracts and dApp architecture.
• Stay updated on blockchain tech, cryptography, and DeFi trends.
• Optimize blockchain infrastructure for performance and cost.
• Contribute to technical documentation and knowledge sharing.
• Mentor junior blockchain developers.

Educación

Bachelor or Master in Computer Science/Engineering

Herramientas

Git

CI/CD

Descripción del empleo

About the Role

Our client, a rapidly expanding leader in the decentralized finance (DeFi) space, is seeking an exceptionally skilled Senior Blockchain Developer to join their innovative team. This role is pivotal in shaping the future of financial technologies, focusing on building robust, secure, and scalable DeFi protocols. You will be instrumental in architecting and implementing cutting‑edge solutions that redefine traditional finance. This is an exciting opportunity to work at the forefront of blockchain technology, contributing to projects that have a significant global impact. The successful candidate will thrive in a dynamic, collaborative environment, pushing the boundaries of what's possible in the crypto and blockchain ecosystem. This position offers a chance to lead critical development efforts and mentor junior engineers, contributing to the overall growth and success of our client’s groundbreaking platform. The role is based in **Johannesburg, Gauteng, ZA**, with a flexible hybrid work model allowing for a balance between in‑office collaboration and remote flexibility. We are looking for a visionary individual passionate about decentralized systems and their transformative potential in the financial world.

Key Responsibilities

• Design, develop, and deploy smart contracts on various blockchain platforms (e.g., Ethereum, Binance Smart Chain, Solana).
• Architect and build scalable, high-performance decentralized applications (dApps) and protocols.
• Collaborate with product managers, designers, and other engineers to define and implement new features.
• Conduct rigorous code reviews, ensuring security, efficiency, and maintainability of blockchain solutions.
• Identify and mitigate potential security vulnerabilities within smart contracts and dApp architecture.
• Stay abreast of the latest advancements in blockchain technology, cryptography, and DeFi trends.
• Optimize existing blockchain infrastructure for performance and cost-effectiveness.
• Contribute to technical documentation and knowledge sharing within the engineering team.
• Mentor and guide junior blockchain developers, fostering a culture of technical excellence.

Requirements

• Bachelor's or Master's degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
• Minimum of 5 years of professional software development experience, with at least 3 years specifically focused on blockchain development.
• Proficiency in smart contract programming languages such as Solidity, Rust, or Vyper.
• Deep understanding of blockchain fundamentals, consensus mechanisms, and tokenomics.
• Experience with DeFi protocols, including but not limited to AMMs, lending platforms, and stablecoins.
• Familiarity with EVM (Ethereum Virtual Machine) and other blockchain architectures.
• Strong knowledge of cryptography principles and their application in blockchain.
• Experience with version control systems (e.g., Git) and CI/CD pipelines.
• Excellent problem‑solving skills and the ability to debug complex distributed systems.
• Strong communication and collaboration skills, with the ability to work effectively in a team environment.
• Experience in **Johannesburg, Gauteng, ZA** or willingness to adapt to hybrid work arrangements is a plus.

Benefits

• Competitive salary package with performance‑based bonuses.
• Comprehensive health and wellness benefits.
• Opportunities for professional development and continuous learning in a fast‑paced industry.
• A stimulating work environment with a talented and passionate team.
• Exposure to cutting‑edge blockchain and DeFi projects.
• Flexible hybrid working arrangement promoting work‑life balance.
• Generous paid time off and company holidays.
• Potential for stock options in a rapidly growing company.