Senior Full Stack Lead Engineer Reactjs

Huxley Associates; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Job summary

Huxley Associates in London is seeking a Senior Full Stack Lead Engineer to drive architecture and deliver hands-on development across frontend and backend in a highly regulated banking environment.

You will lead with expertise in ReactJS, TypeScript, JavaScript and C#/.NET, mentor peers, and collaborate across DevSecOps and SDLC to ensure quality delivery in a hybrid 50/50 model.

Qualifications

• Significant hands‑on experience in software engineering within large enterprise environments.
• Strong frontend and backend engineering capabilities with modern tech stacks.

Responsibilities

• Lead full stack engineering efforts across ReactJS frontend and .NET backend.
• Provide technical mentoring and engineering enablement to the squad.
• Ensure software quality, secure SDLC, and DevSecOps collaboration.

Skills

ReactJS

TypeScript

JavaScript

C#/.NET

REST APIs

Distributed systems

Job description

Senior Full Stack Lead Engineer ReactJS, TypeScript, JavaScript, C#/.NET Banking London

This is a new and exclusive opportunity for a Senior Full Stack Lead Engineer/ software developer with expertise across ReactJS, TypeScript, JavaScript, C#/.NET to join this investment Banking client as they expand their full stack software developer team in London city.

Role details

Title: Senior Full Stack Lead Engineer

Technical stack: ReactJS, TypeScript, JavaScript, C#/.NET

Employer: investment Banking

Location: London City and home working hybrid 50/50%

Permanent role, salary £90,000- £130,000 plus bonus

This is a new opportunity for a Senior Full Stack Lead Engineer to develop using ReactJS, TypeScript, JavaScript, and C#/.NET

This is a senior role for a technically strong engineer who can provide deep technical expertise, engineering guidance, and hands‑on delivery support across frontend and backend (full stack) engineering initiatives.

Key focus

• Full‑Stack Engineering
• Frontend Engineering (ReactJS)
• Backend Engineering (.NET / C#)
• Engineering Standards & Software Quality
• DevSecOps & SDLC Collaboration
• Technical Mentoring & Engineering Enablement

Required Experience

Significant hands‑on experience in software engineering within large enterprise environments.

Strong expertise in

• ReactJS,
• TypeScript
• JavaScript
• C#/.NET
• REST APIs
• Distributed application development.

Strong understanding of modern frontend engineering practices and component-based architectures.

Deep experience working within a highly regulated financial services institution, demonstrating understanding of the pace and complexity of financial organisations.