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Selby Jennings
Senior Software Engineer - Blockchain Infrastructure

Senior Software Engineer - Blockchain Infrastructure

On site

London, United kingdom

Senior

Full Time

15-12-2025

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Skills

Communication JavaScript TypeScript Next.js blockchain

Job Specifications

Our client is a high-growth technology company building critical infrastructure for decentralised finance (DeFi) and Web3. They work with leading wallets and exchanges and are shaping the future of blockchain technology. This is an opportunity to join a fast-paced environment and make a real impact on cutting-edge systems.

About the Role

As a Senior Software Engineer, you will:

Design and implement backend systems and APIs (Golang preferred, but flexible)
Build modern web frontends using frameworks like Next.js
Collaborate with product and engineering teams to deliver new features
Scale infrastructure to support growing complexity
Solve challenging technical problems in a dynamic environment

About You

5+ years of professional software engineering experience
Strong expertise in Golang or TypeScript/JavaScript
Comfortable working across the stack
Experience in crypto/DeFi is highly desirable, but not mandatory
Open to candidates from outside crypto/DeFi for the right fit
If you are a knowledgeable DeFi expert, Golang experience is not required
Excellent communication and collaboration skills

Benefits

Competitive salary and equity
Flexible work arrangements and generous holiday allowance
Opportunity to work on innovative blockchain technology

If you're passionate about building scalable systems and want to help shape the future of decentralised finance, we'd love to hear from you.

About the Company

From Investment Banking, Risk Management, Quantitative Trading, and Insurance, to Investment Management, Sales & Trading, Technology, and Wealth Management, Selby Jennings supports the world's largest financial institutions to revolutionary fintech start-ups with all their hiring needs as a leading Financial Sciences and Services talent partner. If you would like to talk to us about your current talent needs, please request a call back here and one of our specialist consultants will call you back to discuss your hiring nee... Know more