Job Description

Job reference number

331840

Senior Software Engineer



Competitive Salary, bonus potential, 25 days annual leave and pension



Full time


Permanent


London Farringdon x3 days a week

Senior Software Engineer (React) | Royal Mail

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Royal Mail is on a mission to transform how millions of customers interact with our services online. We're looking for a talented

Senior Software Engineer (React)

to help build and maintain modern, scalable applications in Azure that power our customer-facing websites. If you're passionate about crafting clean, efficient code and collaborating in agile teams, this is your opportunity to make a national impact.

What You'll Do

Design and develop reusable front-end applications

using React, TypeScript, and modern frameworks.

Translate user stories into robust technical solutions

, working closely with BAs, POs, and stakeholders.

Maintain and monitor applications

for performance, reliability, and scalability.

Participate in agile sprints

, contributing to Scrum ceremonies and team collaboration.

Implement error handling, testing, and CI/CD pipelines

to ensure production-grade quality.

Troubleshoot incidents

, resolve issues quickly, and support continuous improvement.

Document your work

with clear commit messages, README files, and shared knowledge resources.

What You Bring

Proven experience building and maintaining React applications at scale. Strong front-end skills:

+ React (latest), TypeScript, JavaScript (ES6+), HTML5, CSS3, SCSS
+ State management (Context API, Redux), API integration (Axios, fetch)
+ Testing with Jest and React Testing Library
+ Build tools: Vite, Webpack, Node.js
+ Packaging with NPM
+ Accessibility standards (WCAG, ARIA)
+ Server-side rendering (Next.js, SSR/SSG) preferred
+ Functional programming patterns and Hooks
Common engineering skills:

+ Git source control
+ TDD/BDD with mocks and fakes
+ REST APIs, JSON/XML, Swagger/OpenAPI, GraphQL (preferred)
+ Azure App Services, Functions, and DevOps pipelines
Personal competencies:

+ Analytical mindset and attention to detail
+ Strong communicator and team collaborator
+ Agile enthusiast with a growth mindset
+ Passion for documentation and knowledge sharing

Why Join Us?

Be part of a

high-impact digital transformation

that reaches millions of users. Work in a

collaborative, agile environment

with cutting-edge technologies. Enjoy

flexible working

, career development, and a culture of innovation.

About Us

At Royal Mail we connect companies, customers and communities across the country, delivering a 'one-price-goes-anywhere', universal postal service to more than 30 million addresses. As one of the UK's leading companies, we are focused on being recognised as the best delivery company in the UK and across Europe.


Royal Mail are proud of our diverse employee network groups and the active role they play to support belonging and encourage a positive work environment. We are firmly committed to inclusion and passionate about our people representing the communities we serve.


We are happy to support your need for any adjustments during the application and hiring process. Please share the details within your application if required.


We are Forces family friendly and a Gold signatory to the Armed Forces Covenant. We welcome applications from ex-Armed Forces personnel, reservists, veterans, cadet instructors and military spouses/partners.


For more information on Royal Mail Group and our values please click here: https://www.internationaldistributionsservices.com/en/about-us/


Closing Date:

23rd November 2025.

Please note, this advert may close early if the appropriate number of applications has been reached.


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