Interface designer javascript Work, Jobs (with Salaries)

Founding Frontend Engineer
Innerworks —London
- £75,000 - £90,000 a year
- Full-time
- Hybrid work
- JavaScript
- APIs
- HTML
Quick apply
Web Designer/Developer
echelon media —Tiptree
- Full-time
- Analysis skills
- Project management
- Continuous improvement
Frontend Developer - React
Xelix —London
- £60,000 - £75,000 a year
- Full-time
- Hybrid work
- JavaScript
- Mentoring
- Software development
- Annual leave
Quick apply
Sr. Frontend Engineer - Counter Adversary Operations Team (Hybrid, UK)
CrowdStrike —London
- Full-time
- AWS
- JavaScript
- AI
React Frontend Developer
Orka Informatics —London
- Computer Science
- Engineering
- Bachelor's degree
Cloud Frontend Engineer
Signaloid —Cambridge
- £45,000 - £60,000 a year
- Full-time
- Remote
- Computer Science
- Engineering
- Master's degree
Quick apply
MERN Stack Developer (3–4 Years Experience)
Crystal Vision —Remote
- £750 - £1,200 a month
- Full-time
- Remote
- AWS
- Analysis skills
- JavaScript
Quick apply
Sr. UI Designer (Mobile) - UK
Photon —London
- Bachelor's degree
- JavaScript
- Agile
IT Web Developer - Website Creation - Coding
321 Estates Construction Ltd —Remote
- £15 - £30 an hour
- Temporary
- Remote
- Azure
- DevOps
- SQL
Quick apply
11d
Senior Front End Engineer
1st Formations —London
- £90,000 - £100,000 a year
- Full-time
- Hybrid work
- JavaScript
- HTML
Software Engineer III - React / TypeScript, Gen AI, Frontend
JPMorganChase —London
- Full-time
- JavaScript
- Software development
- Agile
Full Stack Web Developer - Website Development (mid-level)
Moneycorp —London
- Full-time
- English
- JavaScript
- APIs
Front End Developer (with Power Apps experience)
Amber Labs —London
- Hybrid work
- JavaScript
- Agile
- HTML
- Annual leave
- Employee discount
Quick apply
Full Stack Sofware Engineer
CGI —Newcastle upon Tyne
- Full-time
- Azure
- Java
- AWS
Quick apply
Technical UI Designer - 12 Month Contract
Keywords Studios —Gateshead
- Hybrid work
- C++
- JavaScript
- Python
- Free parking
- Flexible schedule
Quick apply
Founding Engineer
Jack&Jill —London
- From £240,000 a year
- Full-time
- Azure
- Java
- SQL
Quick apply
10d
Technical UI Designer – 12 Month Contract
d3t —Runcorn
- Hybrid work
- C++
- JavaScript
- IT
- Free parking
- Flexible schedule
Software Engineer (Frontend)
Nevis Wealth —London
- Full-time
- English
- JavaScript
- APIs
- Annual leave
Product Design Engineer
Oneiro Solutions —Edinburgh
- £50,000 - £85,000 a year
- Full-time
- Hybrid work
- JavaScript
- APIs
- Banking
Quick apply
14d
Senior Interaction Designer
Version 1 —Newcastle upon Tyne
- Full-time
- Hybrid work
- AWS
- JavaScript
- AI
- Employee assistance programme
- Employee discount
Quick apply

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Founding Frontend Engineer

Innerworks -
London

Quick apply

Job details

Full-time
£75,000 - £90,000 a year

Benefits

Company pension

Qualifications

CSS
React
JavaScript
REST
APIs
UI
TypeScript
HTML

Full job description

We're Hiring!

We’re hiring a Founding Frontend Engineer. You will be our first in-house Frontend Engineer, responsible for developing, maintaining, and scaling our user portal - the first thing customer’s see when engaging with our product. You’ll also be crafting the principles and values we uphold when we do frontend engineering now, and into the future. This is an opportunity to take complete ownership over our frontend stack, work with an incredible team of talented engineers, and to help build the future of immunity on the internet.

Your Responsibilities

Owning the full frontend surface from design system foundations to performance to deployment.

Translating UI/UX designs into clean, efficient, and maintainable code.

Developing accessible and high-performing user interfaces across devices.

Optimising application performance and ensuring cross-browser compatibility.

Identifying, troubleshooting, and resolving front-end issues efficiently.

Decision making on authentication strategies and secure session/token approaches (e.g. JWT/JWE, token rotation).

Collaboration with designers, developers, and stakeholders to deliver seamless digital experiences.

Enforcing and maintaining best practices in frontend development, including code quality, testing, and performance optimisation.

Requirements

You Should Have

Strong commercial experience as a front end developer, delivering production Web applications

Excellent JavaScript and TypeScript skills, with strong experience building UI with React

Solid HTML5 and CSS skills, including building responsive interfaces that work well across devices and browsers

Experience working with modern Web application patterns, including server-side rendering (or similar techniques) and performance-minded UI delivery

Experience building enterprise scalable applications against REST API’s

Familiarity with common architectural patterns and building maintainable component-based applications

It Would Be Nice If You Have

Worked in a early-stage startup before and know what it feels like when there's no playbook.

Used AI coding tools and know how to get leverage from them without losing control of the codebase.

Built something data-heavy (dashboards, tables, real-time updates) and know where the performance traps are.

Benefits

£75,000 - £90,000 Base Salary
Employee Matched Pension Plan
Stock Option Package
Wellness Budget
Monthly Socials

Quick apply

Refine Your Search

interface designer javascript jobs

Founding Frontend Engineer

Web Designer/Developer

Frontend Developer - React

Sr. Frontend Engineer - Counter Adversary Operations Team (Hybrid, UK)

React Frontend Developer

Cloud Frontend Engineer

MERN Stack Developer (3–4 Years Experience)

Sr. UI Designer (Mobile) - UK

IT Web Developer - Website Creation - Coding

Senior Front End Engineer

Software Engineer III - React / TypeScript, Gen AI, Frontend

Full Stack Web Developer - Website Development (mid-level)

Front End Developer (with Power Apps experience)

Full Stack Sofware Engineer

Technical UI Designer - 12 Month Contract

Founding Engineer

Technical UI Designer – 12 Month Contract

Software Engineer (Frontend)

Product Design Engineer

Senior Interaction Designer

I want to receive the latest job alerts for interface designer javascript

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