Blockchain Developer

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

Job summary

A leading global investment organization seeks a Senior Blockchain Developer with expertise in smart contracts, APIs, and various blockchain technologies. This remote contract role focuses on building a new digital platform that demands a deep understanding of DeFi and secure coding practices. Candidates should have at least five years of backend experience, including handling live deployments, making this an excellent opportunity to shape the future of investments in a regulated environment.

Qualifications

• 5+ years in backend/blockchain development.
• 2+ years with live smart contract deployments.
• Understanding of gas mechanics and blockchain consensus.

Responsibilities

• Build secure, scalable smart contracts.
• Integrate blockchain features into financial products.
• Support the build of a new digital platform.

Skills

Blockchain Development

Smart Contracts

EVM Architecture

Solidity

DeFi Primitives

Tools

Hardhat

Ethers.js

Web3.js

Foundry

Job description

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Blockchain Developer, leeds, west yorkshire

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Client:

Cornwallis Elt

Location:

leeds, west yorkshire, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Views:

4

Posted:

10.06.2025

Expiry Date:

25.07.2025

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Job Description:

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