1,434,773open jobs
83,996companies
217,838added this week
Browse all
Salary
≈ $62k – $137k per year (Estimated)
Location
Hybrid (London, United Kingdom)
Seniority
Senior
Visa
Licensed UK visa sponsor
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 10, 2026. First seen by Alion on Oct 8, 2026.

Overview
Company
Impact
Profile match
Rullion is a UK workforce solutions and recruitment company headquartered in Altrincham, Greater Manchester, specialising in critical infrastructure sectors such as nuclear, energy, rail, utilities and renewables. It provides temporary and permanent recruitment, executive search, managed service provider and recruitment process outsourcing programmes, train-to-deploy and early careers schemes, statement-of-work delivery and background screening, and reports turnover above 300 million pounds since starting in 1978. It recruits for client roles including protection and control engineers, planners, quantity surveyors, technicians, site managers and project managers.

Senior Frontend Developer (React)

6 Month contract

40 hours per week

Inside IR35

Hybrid 1 office day

London Farringdon office address: 47-53 Charterhouse St, London, EC1M 6PB

We are seeking a talented and motivated Senior Frontend Developer with strong expertise in TypeScript and React to join our growing development team. In this role, you will work on building high-quality, scalable, and responsive web applications using React and TypeScript. You will collaborate closely with cross-functional teams to deliver exceptional user experiences, optimize performance, and contribute to the overall architecture of our platform.

Initially it will be a six-month contract but there is potential for it to be extended. The role is Hybrid, with one day a week being based in their London office. It is a full-time role, 40 hours per week.

Accountabilities:

  • Develop and maintain scalable and responsive web applications using React.js, and TypeScript.
  • Collaborate with UX/UI designers to implement modern, intuitive, and visually appealing user interfaces.
  • Write clean, maintainable, and efficient code while adhering to best practices.
  • Optimize applications for maximum performance across a wide range of devices and browsers.
  • Participate in code reviews and maintain a high level of code quality.
  • Troubleshoot and debug issues in both development and production environments.
  • Contribute to architectural decisions and collaborate with other engineers on overall application design.
  • Ensure the scalability and security of applications by following best development practices.
  • Stay up-to-date with emerging technologies and industry trends, integrating new tools and libraries into the project as appropriate.
  • Work with version control systems like Git and ensure continuous integration and deployment processes are followed.
  • Collaborate with back-end developers to integrate RESTful APIs and handle data flow effectively.

Knowledge and Skills:

  • Demonstrated expertise as a Senior Backend Developer.
  • Proven experience in React.js, and TypeScript development.
  • Strong understanding of JavaScript and modern front-end technologies.
  • Experience with state management libraries like Redux, Recoil, or similar.
  • Familiarity with RESTful APIs
  • Experience with version control systems, such as Git.
  • Solid understanding of web development fundamentals: HTML, CSS, and responsive design.
  • Strong debugging skills and the ability to troubleshoot performance issues.
  • Ability to write clean, modular, and well-documented code.
  • Strong communication skills and the ability to collaborate effectively in a team-oriented environment.

Please note:

Should your application be successful, and you are offered the role, a number of pre-employment checks need to be carried out before your appointment can be confirmed. Any assignment offer with our client will be subject to a satisfactory checking report from the Disclosure Barring Service.

This vacancy is being advertised by Rullion Ltd acting as an employment business.

Since 1978, Rullion has been securing exceptional candidates for a range of clients; from large well-known brands, to SMEs and start-ups. As a family-owned business, Rullion's approach is credible and honest, focused on building long-lasting relationships with both clients and candidates.

We celebrate and support diversity and are committed to ensuring equal opportunities for both employees and applicants.

Rullion celebrates and supports diversity and is committed to ensuring equal opportunities for both employees and applicants.

Free account
Stop reading job ads. Get the ones that fit.
One free account turns this page into a shortlist built around your stack, your level and your pay.
Match on every job. Stack, seniority, pay and location, scored against your profile.
1,434,773 open roles. Read straight off company career pages, refreshed every day.
Unlimited applications. Every one you send is tracked in one place, on-site or on a company board.
3 tailored CVs a month. Rewritten for the exact job you are applying to. Included free.
Create a free account Continue with Google
Free forever. No card. Under a minute.

Your match

How well do you fit this role?
Two answers are enough for a real match. No account needed.
Check my fit
Answers stay in this browser until you create an account.

Recommended for you based on this role

Frontend
Similar stack
Same company
London
≈ $63k – $138k per year (Estimated) • In office • Full-Time • London
JavaScript
SQL
Node JS
AI/ML
Copilot
Claude
OpenAI Codex
Frontend
React.js
DevOps
Terraform
CI/CD
AWS
Docker
Kubernetes
Amazon EKS
Amazon ECS
Windows
Unix
Cybersecurity
Keycloak
Auth0
Management
Agile
Waterfall
Apply
In office • Full-Time • London
JavaScript
SQL
Node JS
AI/ML
Copilot
Claude
OpenAI Codex
Frontend
React.js
DevOps
Terraform
CI/CD
AWS
Docker
Kubernetes
Amazon EKS
GitHub
Amazon ECS
Windows
Unix
Cybersecurity
Keycloak
Auth0
Management
Agile
Waterfall
Apply
≈ $61k – $134k per year (Estimated) • Remote (United Kingdom) • 3+ years exp • Belfast
JavaScript
Java
TypeScript
Java
Gradle
AI/ML
Copilot
Cursor
Claude Code
Frontend
Redux
Next.js
React.js
styled-components
Redux Toolkit
Mobile
React Native
CocoaPods
DevOps
GitHub Actions
CI/CD
QA
Cypress
Jest
Apply
≈ $60k – $133k per year (Estimated) • Hybrid • 5+ years exp • Guildford
Python
JavaScript
TypeScript
C++
Frontend
React.js
DevOps
Bitbucket
Linux
Management
Jira
Agile
Scrum
Apply
≈ $60k – $132k per year (Estimated) • Hybrid • 5+ years exp • Gloucester
Python
JavaScript
TypeScript
C++
Frontend
React.js
DevOps
Bitbucket
Linux
Management
Jira
Agile
Scrum
Apply
≈ $34k – $76k per year (Estimated) • In office • Full-Time • London
Apply
≈ $34k – $76k per year (Estimated) • In office • Full-Time • London
Apply
≈ $51k – $148k per year (Estimated) • In office • 5+ years exp • London • Derry • Belfast • Birmingham
Management
Outlook
Agile
Apply
≈ $88k – $179k per year (Estimated) • In office • Full-Time • London • Derry • Belfast • Birmingham
Apply
≈ $109k – $201k per year (Estimated) • In office • Full-Time • London
Apply
See all jobs
This is one of many
1,434,773 more open roles from verified company boards, updated every day.