Senior Blockchain Developer (Smart Contracts Specialist)

Placements24; United States; Hybrid; USD 71,000 - 106,000; Full time

Benefits offered by this job

Medical aid

Retirement contributions

Hybrid work environment

Professional development

Job summary

Placements24 is seeking a Senior Blockchain Developer to join our client in Midrand, Gauteng. The role focuses on secure smart contract architecture, audits, and scalable dApps. You will collaborate with cross-functional teams and mentor engineers to advance DeFi infrastructure.

The ideal candidate has 5+ years in software with 3+ years in blockchain, strong Solidity/Vyper/Rust skills, and experience with Truffle, Hardhat, and Web3.js. Hybrid work and ongoing professional development are offered.

Qualifications

• Bachelor's or Master's degree in Computer Science, Engineering, or related field.
• Minimum of 5 years of software development experience, with at least 3 years in blockchain/smart contract development.
• Proficiency in Solidity, Vyper, or Rust.
• Strong understanding of blockchain principles, consensus mechanisms, and cryptography.

Responsibilities

• Design, develop, and implement secure smart contracts on Ethereum, Polygon, and other platforms.
• Conduct code reviews and audits to identify and mitigate vulnerabilities.
• Collaborate with product managers to translate requirements into technical specs.
• Optimize smart contract performance and gas efficiency.
• Develop and maintain decentralised applications (dApps) and backend services.
• Mentor junior developers and share knowledge.

Skills

Smart contract

Blockchain concepts

Problem solving

Communication

Education

Bachelor's degree in CS/Engineering

Master's degree in CS/Engineering

Tools

Truffle

Hardhat

Web3.js

Job description

About the Role

Our client, a pioneering firm in the decentralized finance (DeFi) space, is seeking a highly skilled and motivated Senior Blockchain Developer to join their dynamic team in Midrand, Gauteng . This role is crucial for developing and enhancing our core blockchain infrastructure, focusing on smart contract architecture and security. You will be instrumental in shaping the future of our decentralized applications, ensuring they are robust, scalable, and secure. The ideal candidate possesses a deep understanding of blockchain technology, with a proven track record in smart contract development and deployment. This is an exciting opportunity to work with cutting-edge technology and contribute to a rapidly evolving industry.

Key Responsibilities

• Design, develop, and implement secure and efficient smart contracts on various blockchain platforms (e.g., Ethereum, Polygon).
• Conduct thorough code reviews and audits to identify and mitigate potential vulnerabilities in smart contracts.
• Collaborate with product managers and other developers to translate business requirements into technical specifications.
• Optimize smart contract performance and gas efficiency.
• Develop and maintain decentralized applications (dApps) and related backend services.
• Stay abreast of the latest developments in blockchain technology and smart contract best practices.
• Mentor junior developers and contribute to team knowledge sharing.
• Troubleshoot and resolve complex technical issues related to blockchain networks and smart contracts.

Requirements

• Bachelor's or Master's degree in Computer Science, Engineering, or a related field.
• Minimum of 5 years of experience in software development, with at least 3 years focused on blockchain and smart contract development.
• Proficiency in smart contract programming languages such as Solidity, Vyper, or Rust.
• Strong understanding of blockchain principles, consensus mechanisms, and cryptography.
• Experience with popular blockchain frameworks and tools (e.g., Truffle, Hardhat, Web3.js).
• Familiarity with common security vulnerabilities in smart contracts and mitigation techniques.
• Excellent problem-solving and analytical skills.
• Strong communication and collaboration abilities, with experience working in agile environments.
• Experience with cloud platforms (AWS, Azure, GCP) is a plus.
• Knowledge of Layer 2 scaling solutions is advantageous.

Benefits

Our client offers a competitive salary package, a comprehensive benefits plan including medical aid and retirement contributions, and opportunities for professional development and continuous learning. Employees enjoy a flexible hybrid work environment, access to the latest technologies, and the chance to be part of a forward-thinking company at the forefront of the blockchain revolution. Regular team-building events and a collaborative company culture are also key highlights. We believe in fostering innovation and providing a platform for our employees to grow and excel in the exciting world of blockchain technology in Midrand, Gauteng .