Blockchain Developer (Full-stack)

Placements24; Bloemfontein; On-site; ZAR 700,000 - 1,100,000; Full time

Benefits offered by this job

Competitive pay

Bonus structure

Medical and retirement benefits

Generous PTO

Professional development

Office in Bloemfontein

Team-building events

Exposure to digital assets

Job summary

Placements24 is seeking a versatile Full-stack Blockchain Developer to join their core engineering team in Bloemfontein. The role blends on-chain and off-chain work, building smart contracts and scalable web services for a leading FinTech platform.

You will design, implement, and test blockchain components, APIs, and frontend interfaces using React/Vue/Angular, with AWS/Azure CI/CD practices. A strong crypto passion and collaboration with product teams are essential.

Qualifications

• Bachelor's degree in CS/Engineering or related field.
• 3+ years full-stack development with at least 1 year in blockchain.
• Proficient in Solidity and blockchain platforms (Ethereum, BSC).

Responsibilities

• Design, develop, and maintain smart contracts for token issuance, trading, and platform features.
• Build and integrate backend services interacting with blockchain networks.
• Develop user-facing web applications using modern frontend frameworks.
• Implement APIs for frontend-backend-blockchain integration.
• Ensure security, scalability, and reliability of the platform.
• Collaborate with product managers, designers, and engineers to deliver features.
• Write unit, integration, and end-to-end tests.
• Monitor performance and troubleshoot production issues.
• Stay updated with blockchain trends and participate in code reviews.

Skills

Full-stack development

Blockchain development

React

Vue

Angular

RESTful APIs

Node.js

Python

Go

Security & testing

Web3

Education

Bachelor's degree in CS/Engineering

Tools

Ethereum

BSC

Ethers.js

Web3.js

AWS

Azure

CI/CD

Job description

About the Role

Our client, a dynamic digital asset exchange platform, is seeking a versatile Full-stack Blockchain Developer to join their core engineering team. This role requires a blend of expertise in blockchain technologies and traditional full-stack development to build and enhance their trading platform. You will be involved in developing both on-chain (smart contracts, blockchain integration) and off-chain (web applications, APIs) components. The ideal candidate is passionate about cryptocurrencies and blockchain, possesses strong coding skills across the stack, and thrives in a challenging, fast-paced environment. This is a fantastic opportunity to contribute to a leading FinTech company in Bloemfontein .

Key Responsibilities

• Design, develop, and maintain smart contracts for token issuance, trading, and other platform functionalities.
• Build and integrate backend services that interact with blockchain networks.
• Develop user-facing web applications using modern frontend frameworks.
• Implement APIs for seamless integration between frontend, backend, and blockchain layers.
• Ensure the security, scalability, and reliability of the entire platform.
• Collaborate with product managers, designers, and other engineers to deliver high-quality features.
• Write comprehensive unit, integration, and end-to-end tests.
• Monitor system performance and troubleshoot production issues.
• Stay current with the latest trends and technologies in blockchain and web development.
• Participate in code reviews and contribute to architectural discussions.

Requirements

• Bachelor's degree in Computer Science, Engineering, or a related field.
• 3+ years of experience in full-stack development, with at least 1 year of specific blockchain development experience.
• Proficiency in smart contract development (e.g., Solidity) and blockchain platforms (e.g., Ethereum, BSC).
• Strong experience with backend technologies (e.g., Node.js, Python, Go) and databases (e.g., PostgreSQL, MongoDB).
• Proficiency in frontend development using frameworks like React, Vue, or Angular.
• Experience with building and consuming RESTful APIs.
• Understanding of blockchain fundamentals, consensus mechanisms, and cryptography.
• Familiarity with Web3 libraries (e.g., ethers.js, web3.js).
• Experience with CI/CD pipelines and cloud platforms (AWS, Azure).
• Excellent problem-solving, debugging, and communication skills.

Benefits

• Competitive salary and bonus structure.
• Opportunity to work on a high-growth cryptocurrency exchange platform.
• Comprehensive medical and retirement benefits.
• Generous paid time off.
• Professional development opportunities and access to cutting-edge technologies.
• Vibrant and collaborative office environment in Bloemfontein .
• Regular team-building events and social activities.
• Exposure to the rapidly evolving world of digital assets.