Lead front end developer / senior ui developer Work, Jobs (with Salaries)

Senior React Frontend Developer (Data)
Open Cosmos —Didcot
- Hybrid work
- English
- JavaScript
- APIs
Technical Lead, Developer Experience
Ably —London
- Remote
- JavaScript
- APIs
- Leadership
- Annual leave
Cloud Frontend Engineer
Signaloid —Cambridge
- £45,000 - £60,000 a year
- Full-time
- Remote
- Computer Science
- Engineering
- Master's degree
Quick apply
Sr React Developer - Equities - Vice President
JPMorganChase —London
- Full-time
- System design
- AWS
- Maths
Digital Architect - Senior Manager
Capgemini —London
- Hybrid work
- Azure
- AWS
- APIs
Lead Software Developer (Full Stack Web)
FlexTrade —London
- Full-time
- Hybrid work
- Java
- Bachelor's degree
- JavaScript
Quick apply
Head of Engineering
The Fragrance Shop —Manchester
- Azure
- Computer Science
- Continuous improvement
- Free parking
- Work from home
Web Designer/Developer
echelon media —Tiptree
- Full-time
- Analysis skills
- Project management
- Continuous improvement
Senior Automation Engineer
BigHand —London
- Hybrid work
- Azure
- SQL
- Mentoring
Vice President, Client Platforms User Experience Designer
Ares Management —London
- Full-time
- Bachelor's degree
- JavaScript
- Financial services
Senior Full Stack Engineer - Team Web
Intercom —London
- Hybrid work
- Computer Science
- Engineering
- AWS
- Annual leave
- Work from home
Senior Software Engineer
Online Filings —London
- £50,000 - £65,000 a year
- Full-time
- Hybrid work
- Computer Science
- Customer service
- DevOps
- Employee discount
Quick apply
Senior Software Engineer (Inbox Desktop)
Proton AG —London
- Computer Science
- Engineering
- Master's degree
Head of Derivatives eTrading and SDP
Standard Chartered —London
- Hybrid work
- Azure
- Sales
- DevOps
- Annual leave
- Employee assistance programme
12d
Senior Product Designer
Patrianna —Gibraltar
- Full-time
- Hybrid work
- Agile
- AI
- Communication skills
Manager, UX Development
Elekta —Crawley
- Management
- Computer Science
- Engineering
- Annual leave
- Work from home
Principal Full Stack Engineer
Atlas Copco Group —Clevedon
- Hybrid work
- Azure
- DevOps
- English
5d
Forward Deployed Solution Engineer – Applied AI FDE
ServiceNow —London
- Full-time
- Hybrid work
- Azure
- Salesforce
- DevOps
Quick apply
11d
Principal Engineer - Digital Experience Platform
Skipton Building Society —Skipton
- Full-time
- Hybrid work
- Java
- Mentoring
- APIs
- Annual leave

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Senior React Frontend Developer (Data)
Open Cosmos —Didcot
Proactivity in identifying and driving improvements across systems and workflows and providing guidance and support to other engineers, contributing to team…
Technical Lead, Developer Experience
Ably —London
You’ll operate in a high-velocity workspace where PMs, customers, and engineers co-create features. You will hold the team accountable for delivery commitments…

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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

lead front end developer / senior ui developer jobs

Senior React Frontend Developer (Data)

Technical Lead, Developer Experience

Cloud Frontend Engineer

Sr React Developer - Equities - Vice President

Digital Architect - Senior Manager

Lead Software Developer (Full Stack Web)

Head of Engineering

Web Designer/Developer

Senior Automation Engineer

Vice President, Client Platforms User Experience Designer

Senior Full Stack Engineer - Team Web

Senior Software Engineer

Senior Software Engineer (Inbox Desktop)

Head of Derivatives eTrading and SDP

Senior Product Designer

Manager, UX Development

Principal Full Stack Engineer

Forward Deployed Solution Engineer – Applied AI FDE

Principal Engineer - Digital Experience Platform

Other jobs to consider

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