Senior Blockchain Software Developer

About Blockchain 4 All Limited

Blockchain 4 All Limited is an Irish software development company focused on enterprise blockchain technology, cybersecurity, and digital transformation. Our innovation is protected by European Patent EP3933637, enabling existing software applications to benefit from blockchain technology without rewriting or re-coding.

We are seeking an experienced Senior Blockchain Software Developer on a short-term contract to help complete our enterprise blockchain platform.

This is a fully remote position, and applications are welcome from candidates based in Ireland and internationally.

Key Responsibilities

• Design, develop, and maintain blockchain components using the Ethereum ecosystem.
• Develop and integrate smart contracts using Solidity.
• Work with Geth and Prysm Ethereum clients.
• Build backend services using Node.js and Web3.js.
• Integrate blockchain functionality with existing PHP applications.
• Develop secure APIs and blockchain transaction workflows.
• Manage contract deployment, Contract Instances, ABI, and Bytecode.
• Implement interactions with the Ethereum Virtual Machine (EVM).
• Participate in technical design discussions and architecture decisions.
• Troubleshoot, optimise, and document platform components.
• Collaborate remotely with the founder and project team to deliver project milestones.

Required Skills

• Strong experience with Ethereum development.

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• Geth.
• Prysm.
• Solidity.
• Smart Contract development.
• Web3.js.
• Node.js.
• PHP.
• Ethereum Virtual Machine (EVM).
• Contract Instance management.
• Application Binary Interface (ABI).
• Smart Contract Bytecode.
• REST APIs.
• Git.
• Linux development environment.

Desirable Skills

• Docker.
• MySQL or PostgreSQL.
• JSON-RPC.

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• WebSocket APIs.
• Blockchain security best practices.
• Experience deploying Ethereum nodes.
• Enterprise software development experience.
• Technical documentation.

Candidate Profile

We are looking for a self-motivated developer who enjoys solving complex technical challenges and has hands-on experience building blockchain applications. The successful candidate should be comfortable working independently in a remote environment while collaborating effectively with the project team.

Strong analytical skills, attention to detail, and a commitment to delivering high-quality software are essential.

Employment Details

• Employment Type: Short-Term Contract
• Workplace: Remote
• Location: Ireland or International
• Experience Level: Mid-Senior to Senior
• Industry: Software Development

Why Join Blockchain 4 All Limited?

This is an opportunity to contribute to the development of an innovative enterprise blockchain platform based on European Patent EP3933637. You will work on advanced blockchain technologies, help shape the future of the platform, and collaborate on a project focused on secure enterprise software integration and digital transformation.