Founding Frontend Engineer
Job in
Greater London, London, Greater London, W1B, England, UK
Listed on 2026-06-08
Listing for:
Innerworks
Full Time
position Listed on 2026-06-08
Job specializations:
-
Software Development
Front End Developer, React.js, Web Developer, Software Engineer
Job Description & How to Apply Below
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 customers 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.
YourResponsibilities
- 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.
- Strong commercial experience as a front end developer, delivering production Web applications.
- Excellent JavaScript and Type Script 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 APIs.
- Familiarity with common architectural patterns and building maintainable component-based applications.
- 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.
- £75,000 - £90,000 Base Salary
- Employee Matched Pension Plan
- Stock Option Package
- Wellness Budget
- Monthly Socials
Note that applications are not being accepted from your jurisdiction for this job currently via this jobsite. Candidate preferences are the decision of the Employer or Recruiting Agent, and are controlled by them alone.
To Search, View & Apply for jobs on this site that accept applications from your location or country, tap here to make a Search:
To Search, View & Apply for jobs on this site that accept applications from your location or country, tap here to make a Search:
Search for further Jobs Here:
×