Product Frontend Engineer

Prepaverse GmbH; Zürich; On-site; CHF 90,000 - 150,000; Full time

Job summary

quinn is building a single frontend platform for employers, employees and support teams, across web and mobile. You will own the frontend of the quinn app and Maestro, plus the component library that underpins quinn Home and quinn Business.

You will work with design and AI-native development to ensure a native-feel, scalable UI and high performance. Fluency in English is required; a portfolio is welcome.

Qualifications

• Strong frontend development experience in scalable apps.
• Experience building design systems and component libraries.
• Solid understanding of UI/UX and performance considerations.

Responsibilities

• Own the frontend of the quinn app and Maestro, desktop and mobile.
• Develop the component library powering quinn Home and quinn Business across markets.
• Collaborate with design and product to ship polished, reliable UI at scale.

Skills

Frontend development

React

TypeScript

Education

Bachelor's degree in CS

Tools

Figma

Job description

quinn is becoming the way people employ, across the globe, through one app.

quinn is an app-based, managed payroll and employment-administration service. We run it for private households employing a cleaner, nanny, or caretaker, and for businesses that manage employment relationships at scale. The customer stays the legal employer: quinn registers the employment, runs payroll, and handles social insurance, taxes, and filings on their behalf, automated end to end.

Where everyone else sells software, quinn sells the outcome. We don't sell payroll software. We run payroll.

The purpose behind it is simple: Fair employment. For all. Correct and fair employment, made simple and accessible for any employer and any employee, in any market quinn enters.

Where this is going

Think about what Revolut did to banking. All of the complexity (the regulation, the clearing, the compliance) handled invisibly in the background, and one simple experience at the front. Nobody using Revolut thinks about what happens behind the screen when they open a new account, swap currencies or send money abroad. It just works, in a couple of taps. Nobody should have to think about it in order to employ someone either.

That is what quinn is building, and it is further along than most people assume: a profitable core business, running today in Switzerland, Germany and the UK, expanding into new markets both by launching and by acquiring. By 2030 quinn intends to be the destination brand for fair employment across six countries and more, on one platform, with one experience.

One platform means one frontend. One experience means it looks and behaves like quinn whether you are in Zurich or in London, a household or a company. In this strategy that is not a nice-to-have. It is the strategy.

Which is why the surface matters more than anything else. Everything quinn does is designed to disappear. The interface is the only part the customer ever sees, and it is the whole proof that the complexity behind it is really handled.

Why this role exists

Today, quinn runs on several separate web apps: one per product and market, each with its own frontend, grown over the years as the company grew. Our backend engineers built them alongside everything else, plus an internal admin tool that grew the same way. They all work: thousands of employers run payroll through them every month. But nobody was ever tasked with owning the frontend development, so each one got built the way frontend is built by Backend Developers, seen as a hassle rather than the main aspect users interactive with.

What comes next is one frontend that replaces all of them, built from scratch: one quinn app for employers, employees and our own support team, in the browser first, then in the App Store and Google Play from the same work. Alongside it, the frontend of Maestro, the internal tool that replaces the old admin for batch processes. The phone app is the surface that matters most, so everything is built for it from the first screen rather than adapted to it afterwards.

That is the opening.

What you will own

Everything on the screen:

• The frontend of the quinn app and the web app. App first. One app for everyone who uses quinn: the employer, the employee, and our own support team working inside the customer's account.

• The frontend of Maestro, our internal batch tool. Desktop and dense: queues, runs, tables, filters, multi-select, keyboard shortcuts. A different discipline from the app, built on the same components.

• The component library across quinn Home and quinn Business: one frontend, one experience, every market and every device.

• Whether the app feels native: response, scrolling, gestures, transitions, biometric login, push. Nothing that gives away it isn't native.

• The quality of what you ship. Nothing leaves your hands half-finished.

Where design ends, engineering begins.

We have a design team, and they own how quinn looks and behaves: the flows, the visual design, the tokens, the component specs. You don't design. You own everything from there: how it is built, and everything a design file cannot reasonably specify, such as gestures, keyboard, safe areas, what happens between the drawn breakpoints, the loading, offline, pending and failed states, what a three-line German label does to a layout that was designed for English. You are in the room before design starts, saying what already exists in the library and what a new pattern costs. Not at the end, receiving a handover. When you and design disagree, they decide how it looks and behaves and you decide how it is built. Nothing enters the component library without both of you.

How we work

We are AI-native, and we mean it operationally rather than as a slogan. AI is how the work gets done here. It is why a small team ships like a large one, and it is a large part of how one person will be able to hold the standard we are describing.

We expect you to be at the front of that. Not to have heard of the tools, to live in them, and to build your own leverage with them: scaffolding, visual regression checks, design-token pipelines, whatever takes manual work out of the way.

And we expect the judgement that has to come with it. AI writes code that looks right and is subtly wrong: structure that doesn't scale, patterns that fall apart three screens later, components that work once and never again. You take the speed and throw away the rest. AI never lowers the bar here. It is the reason the bar can be this high.

Who we are looking for

You care about interfaces more than anyone else in the room. You see the two-pixel misalignment without being told, and it bothers you until it is fixed.

You build and maintain UI components and design systems, not one-off screens. You can build a mobile app that feels like one. And you can also build a desktop tool full of tables, filters and keyboard shortcuts, because Maestro is one. You understand UX and how people actually behave, not only how a screen looks. And you write code other people can take over: scalable, structured, documented. Not something that only works while you are in the building.

You are independent and decisive. Nobody will spec every detail for you and nobody will review your pixels.

You are fluent in English, no other language is required. And if you have a portfolio, a live product, or anything you have shipped that you are proud of, show it to us. Not a requirement, but it tells us more than a CV does.

Most importantly: you want this one. Not a frontend role at a company where the frontend is a chore. This one, the app nobody has built yet, the standard nobody has set yet, and a company where getting it right actually decides whether the strategy works.

The Team

We are a small, fast, direct team. We do not have a lot of process or a lot of hierarchy. We do have a clear strategy, an ambitious plan, and five values we actually mean: Be open, Own it, Speak up, Keep it simple, Bias for action.

This is one of the most important hires we will make this year. We are not rushing it and we are not filling a seat. We are looking for the person who reads this and thinks: finally.