Senior front end developer (react.js/next.js) Work, Jobs (with Salaries)

Senior React Frontend Developer (Data)
Open Cosmos —Didcot
- Hybrid work
- English
- JavaScript
- APIs
Senior Front End Engineer - AI Products
Citi —London
- Full-time
- Hybrid work
- Master's degree
- JavaScript
- APIs
- Annual leave
- Employee assistance programme
Senior Frontend Engineer, Growth
Incard —London
- Full-time
- JavaScript
- APIs
- Annual leave
- Sick pay
Quick apply
Senior Front-End Developer
The Protein Works™ —Liverpool
- Full-time
- Azure
- Merchandising
- AWS
Quick apply
Senior Front End Software Engineer - Application Development
Palantir Technologies —London
- Full-time
- JavaScript
- APIs
- In-person
- Work from home
Sr Lead Software Engineer - UI Developer - React
JPMorganChase —London
- Full-time
- System design
- AWS
- Maths
Front-End Team Lead
DigiTickets —Exeter
- £52,000 - £58,000 a year
- Full-time
- Hybrid work
- JavaScript
- Mentoring
- APIs
- Annual leave
Quick apply
Senior Frontend Developer – E-Commerce (Shopify)
Durlston Partners —London
- £100,000 a year
- Hybrid work
- AWS
- JavaScript
- APIs
Next.js Developer
Scrumconnect Consulting —Swansea
- £32,000 - £45,000 a year
- Hybrid work
- Azure
- DevOps
- AWS
2d
Sr React Developer - Equities - Vice President
JPMorganChase —London
- Full-time
- System design
- AWS
- Maths
Engineering Manager (Front-end)
Mindera —London
- Hybrid work
- Azure
- System design
- Java
Quick apply
Lead Frontend Engineer
Acre Software —London
- Remote
- JavaScript
- Software development
- In-person
- Annual leave
- Flexible schedule
Senior Developer - Drupal
Box UK Limited —Cardiff
- Up to £55,000 a year
- Full-time
- Hybrid work
- JavaScript
- Mentoring
- Software development
- Employee discount
- Life insurance
Quick apply
7d
Staff/Lead Fullstack Engineer (Frontend-focused)
Mimica —London
- Full-time
- Remote
- System design
- English
- Communication skills
- Annual leave
- Flexible schedule
Senior UI Software Engineer II
LexisNexis Risk Solutions —London
- Full-time
- Computer Science
- DevOps
- Engineering
- Employee assistance programme
- Employee discount
Senior UI Software Engineer II
RELX —London
- Full-time
- Computer Science
- DevOps
- Engineering
- Employee assistance programme
- Employee discount
Senior Frontend Engineer
Version 1 —Belfast
- Full-time
- Java
- AWS
- JavaScript
- Employee assistance programme
- Employee discount
Quick apply
Senior Software Engineer (Angular)
Vix Technology —Manchester
- £65,000 - £75,000 a year
- Full-time
- AWS
- APIs
- IT
Quick apply
Web Designer/Developer
echelon media —Tiptree
- Full-time
- Analysis skills
- Project management
- Continuous improvement
Web Developer
Coder Agency —Norwich
- Full-time
- Hybrid work
- Computer Science
- JavaScript
- APIs
Quick apply

I want to receive the latest job alerts for senior front end developer (react.js/next.js)

By signing in to your account, you agree to SimplyHired's Terms of Service and consent to our Cookie and Privacy Policy.

Senior React Frontend Developer (Data)

Open Cosmos -
Didcot

Apply Now

Job details

Qualifications

CSS
React
D3.js
Git
English
JavaScript
Redux
APIs
Front-end development
Data visualisation
TypeScript
HTML

Full job description

Aim high, go beyond!

At Open Cosmos we are solving the world’s biggest challenges from space, providing businesses, governments and researchers access to more readily available information than ever before - ready for the challenge? Then read on…

Working in our Data Division

At Open Cosmos, our Data division transforms satellite data into meaningful insights that drive real-world impact. The team delivers all data products generated by Open Cosmos and its partners, curates and develops DataCosmos (our geospatial data platform) and builds integrations that make satellite imagery easy to access and act on.

What will you be doing?

As a Senior React Fronted Developer in the Data Team you will lead the design and development of the interfaces that bring the DataCosmos platform to life — building performant, scalable UI components and data visualisations that make complex satellite data clear, accessible, and actionable for users across the platform.

You’ll be:

Designing, developing, and maintaining React-based user interfaces for data exploration, visualisation, and delivery
Building intuitive and performant UI components to handle large and complex datasets
Implementing reusable, scalable front-end architecture and component libraries
Translating data requirements into clear, accessible, and user-friendly interfaces
Working closely with data and backend engineers to integrate APIs and data services effectively
Optimising front-end performance when handling high-volume or real-time data
Writing and maintain unit and integration tests to ensure reliability and robustness
Participating in code reviews, ensuring adherence to front-end best practices and coding standards
Contributing to CI/CD pipelines for front-end deployment and release
Providing technical guidance on React architecture, state management, and data handling patterns
Acting as a subject matter expert for front-end development within data-driven applications
Identifying opportunities to simplify, optimise, and enhance data visualisation and UI performance
Ensuring front-end solutions support clarity, usability, and efficiency for both technical and non-technical users

What You’ll bring

Strong proficiency in React and TypeScript, with the ability to design scalable and maintainable front-end systems
Deep understanding of modern front-end development practices, including HTML, CSS, and component-based architecture
Strong capability in building data-driven interfaces and working with APIs and asynchronous data flows
Confident use of state management approaches like Redux, Zustand, Context, or similar
Familiarity with data visualisation libraries (e.g. D3.js, Recharts, or similar)
Strong understanding of front-end performance optimisation, particularly for large or complex datasets
Understanding of CI/CD concepts and cloud-native environments
Ability to structure, transform, and present complex data effectively in the front end
Strong understanding of version control systems (Git) and collaborative development practices
Clear and effective communication, with the ability to work across technical and non-technical teams
Ability to take ownership of front-end architecture, overall user experience and setting high standards for code quality, usability, and performance.
Proactivity in identifying and driving improvements across systems and workflows and providing guidance and support to other engineers, contributing to team capability
A collaborative and solution-oriented approach, working effectively across disciplines, operating in a fast-paced, scaling environment with evolving priorities

This role can be based in any of our locations.

To apply, you must have the legal right to work in our chosen location.

When applying, please submit your CV in English.

Why Open Cosmos?

Work at the cutting edge of space technology with customers around the globe
A mission-driven company making space accessible to help solve real-world challenges
A diverse, ambitious, and supportive team

Equal opportunity employer

At Open Cosmos, we are dedicated to fostering a workplace built on respect, dignity, and belonging. As an equal opportunity employer, we actively challenge bias to ensure every candidate and employee feels truly welcome. We celebrate diversity in all its forms and are committed to maintaining an inclusive environment where everyone has the opportunity to thrive.

Apply Now

Refine Your Search

senior front end developer (react.js/next.js) jobs

Senior React Frontend Developer (Data)

Senior Front End Engineer - AI Products

Senior Frontend Engineer, Growth

Senior Front-End Developer

Senior Front End Software Engineer - Application Development

Sr Lead Software Engineer - UI Developer - React

Front-End Team Lead

Senior Frontend Developer – E-Commerce (Shopify)

Next.js Developer

Sr React Developer - Equities - Vice President

Engineering Manager (Front-end)

Lead Frontend Engineer

Senior Developer - Drupal

Staff/Lead Fullstack Engineer (Frontend-focused)

Senior UI Software Engineer II

Senior UI Software Engineer II

Senior Frontend Engineer

Senior Software Engineer (Angular)

Web Designer/Developer

Web Developer

I want to receive the latest job alerts for senior front end developer (react.js/next.js)

Related Searches

Explore jobs in more locations

Jobseeker tools

Employer Tools

Browse

Stay Connected