Senior Full Stack Lead Engineer ReactJS, - Huxley

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

Job summary

Senior Full Stack Lead Engineer is needed in London for a banking client. You will lead full-stack development using ReactJS, TypeScript, JavaScript and C#/.NET across frontend and backend, shaping technical standards and delivering high-quality software.

This permanent, hybrid role combines hands-on coding with mentoring in a regulated financial environment. Expect exposure to SDLC, DevSecOps practices and collaboration with product and risk teams.

Qualifications

• Significant hands-on software engineering experience in large enterprise environments.
• Strong expertise in: ReactJS, TypeScript, JavaScript, C#/.NET.
• REST APIs and distributed application development.
• Deep experience in a highly regulated financial services institution.

Responsibilities

• Lead full-stack development across frontend and backend (full stack) initiatives.
• Provide deep technical guidance, mentoring and engineering enablement.
• Maintain engineering standards and software quality throughout SDLC.

Skills

ReactJS

TypeScript

JavaScript

C#/.NET

REST APIs

Distributed app development

Frontend engineering

Backend engineering

DevSecOps

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.