Senior Blockchain Engineer — Real-Time Crypto Infra

Gamdom; Greater London; On-site; GBP 80,000 - 100,000; Full time

Job summary

A leading blockchain company in Greater London is seeking a Senior Crypto Developer to enhance their blockchain infrastructure and Web3 applications. You will be responsible for backend microservices development, optimizing bitcoin-core nodes, and maintaining Ethereum pipelines. The ideal candidate has over 5 years of experience in backend development with Node.js and TypeScript, along with a deep understanding of blockchain technologies. The company offers a competitive salary and a dynamic work environment.

Benefits

Professional growth opportunities

Competitive salary

Supportive work environment

Qualifications

• 5+ years of backend development experience, including significant work with Node.js and TypeScript.
• Hands-on experience with Ethereum, Bitcoin, and L2s (e.g., Arbitrum, Optimism, Polygon).
• Strong understanding of secure wallet management practices.

Responsibilities

• Own backend micro-services in Node.js / TypeScript that interface with multiple blockchains.
• Run and optimize bitcoin-core (BTC / LTC) nodes for high-volume deposit and withdrawal flows.
• Build and maintain Ethereum transaction pipelines using ethers.js.

Skills

Backend development experience

Node.js

TypeScript

Blockchain fundamentals

Ethereum and Bitcoin

Web3 libraries

Secure wallet management

React

Job description

A leading blockchain company in Greater London is seeking a Senior Crypto Developer to enhance their blockchain infrastructure and Web3 applications. You will be responsible for backend microservices development, optimizing bitcoin-core nodes, and maintaining Ethereum pipelines. The ideal candidate has over 5 years of experience in backend development with Node.js and TypeScript, along with a deep understanding of blockchain technologies. The company offers a competitive salary and a dynamic work environment.