×
Register Here to Apply for Jobs or Post Jobs. X

Founding Frontend Engineer

Job in Greater London, London, Greater London, W1B, England, UK
Listing for: Innerworks
Full Time position
Listed on 2026-06-08
Job specializations:
  • Software Development
    Front End Developer, React.js, Web Developer, Software Engineer
Salary/Wage Range or Industry Benchmark: 75000 - 90000 GBP Yearly GBP 75000.00 90000.00 YEAR
Job Description & How to Apply Below
Location: Greater London

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.

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 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.
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
#J-18808-Ljbffr
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:
 
 
 
Search for further Jobs Here:
(Try combinations for better Results! Or enter less keywords for broader Results)
Location
Increase/decrease your Search Radius (miles)
0
200
Filters
Education Level
Experience Level (years)
Posted in last:
Salary