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Founding Frontend Engineer

London, UK💼 Full-time💰 $75,000–$75,000🗓 2026-05-29 → 2026-08-07

Core

Building and scaling the user portal (the first customer-facing interface) and defining frontend engineering principles for a startup.

Role type

Founding Frontend Engineer

Builds

The user portal and frontend stack

Domain

Internet / Immunity

Deliverable

product features

Required skills

JavaScript, TypeScript, React, HTML5, CSS, server-side rendering, REST API integration, component-based architecture

Preferred skills

Early-stage startup experience, AI coding tools proficiency, data-heavy application development

Technologies

React, TypeScript, JWT, JWE

Responsibilities

Owning the full frontend surface from design system to deployment, translating UI/UX designs into code, developing accessible high-performing interfaces, optimizing application performance, troubleshooting front-end issues, making decisions on authentication strategies, collaborating with designers and stakeholders, enforcing frontend best practices

Seniority

Founding, hands-on IC

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