Blockchain Developer

JR United Kingdom; Belfast; Remote; GBP 80,000 - 100,000; Full time

Job summary

A growing global investment organization is looking for a Senior Blockchain Engineer to join their team on a contract basis. This role involves building secure and scalable smart contracts and backend systems within a regulated environment, ideal for candidates with significant blockchain development experience. The position offers the chance to work at the forefront of investment technology while earning a competitive daily rate.

Qualifications

• 5+ years of backend/blockchain development
• 2+ years on live smart contract deployments
• Deep understanding of EVM architecture and gas mechanics

Responsibilities

• Build secure and scalable smart contracts and backend systems
• Integrate blockchain features into financial products
• Support the development of a new digital platform

Skills

Blockchain development

Smart contract deployment

Solidity

EVM architecture

DeFi primitives

Tools

Hardhat

Ethers.js

Web3.js

Foundry

Job description

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Senior Blockchain Engineer – Smart Contracts, Web3, APIs, Node.js, Go, Rust, Solidity, DeFi – Global Investments – Remote – up to £850 outside IR35

We are working with a growing Global Investment organisation, who are seeking a Senior Blockchain Developer to join their team on a contract basis, supporting the build of a new digital platform.

The successful candidate will be tasked with building secure, scalable smart contracts and backend systems powering tokenized assets and multi-chain infrastructure.

Required skills:

• 5+ years of backend/blockchain development (including 2+ years on live smart contract deployments)
• Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives.
• Proficiency with Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry.
• Experience integrating blockchain features into real-world financial or investment products.

This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within a regulated environment, creating products that are reshaping the future of investing.

*please note that candidates must be based in the UK