Senior Full-Stack Engineer React

A large financial services organisation is seeking a Senior Backend Engineer to join a high-performing digital engineering function. This role sits within a customer-facing mobile product environment, delivering secure, scalable solutions king across two product teams alongside a dedicated Dev Ops function, you will play a key role in shaping backend architecture, driving engineering standards, and ensuring scalability/security.

Design, build and maintain secure, scalable backend microservices (Node.js or JVM-based frameworks)

Contribute to backend architecture decisions aligned to clean architecture principles

Support and integrate with a React Native mobile application environment

Drive performance, resilience and security best practices across backend services

Implement and champion strong testing strategies (including TDD) and high-quality code reviews

Collaborate closely with Dev Ops on CI/CD pipelines, Docker and AWS-based deployments

Mentor engineers and contribute to continuous improvement across engineering practices

Manage technical debt and ensure engineering decisions align with business and customer outcomes

• React Mandatory

Backend expertise in Node.js or Java (JVM-based frameworks)

Proven experience designing and building REST-based microservices architectures

Strong understanding of scalability, security and system design in production environments

Experience working on mobile-backed systems
, ideally with exposure to React Native projects

Familiarity with AWS, Docker and CI/CD pipelines

Strong engineering fundamentals and a passion for clean, maintainable architecture

Exposure to or interest in applying AI within backend systems is highly advantageous

Robert Walters Operations Limited is an employment business and employment agency and welcomes applications from all candidates

Contract Type:
Permanent

Specialism:
Technology & Digital

Focus:
Software Development/Engineering

Industry: IT

Salary: £60,000 - £90,000 per annum + bonus + benefits

Workplace Type:
Hybrid

Experience Level: Mid Management

Location:

City of London

Job Reference: SYUK6F-3DA0DE04

Date posted: 3 March 2026

Consultant:
Albertine Hedley