Founding iOS Engineer

Ferto Health UG; Berlin; Hybrid; EUR 90.000 - 120.000; Vollzeit

Benefits dieser Stelle

VSOP equity

Growth opportunities

Technical influence

Competitive salary

Impact on product

Flexible hours

Berlin office

EU Blue Card

Zusammenfassung

Ferto Health UG (haftungsbeschränkt) is seeking an iOS engineer who loves the camera to turn a microscope setup into a lab instrument running on-device AI. You’ll own the app end-to-end, handle real-time CV and robust capture workflows, and work closely with founders to shape the product for clinical use.

You’ll ship in Swift/SwiftUI, optimize AVFoundation pipelines, and design an architecture that withstands real-world lab conditions, including offline operation and backend integration when

Qualifikationen

• Experience with iOS camera stack using AVFoundation and manual controls.
• Experience running ML models on-device with CoreML/Vision.
• Shipped iOS apps in Swift/SwiftUI with production ownership.
• Ability to design scalable architectures and explain trade-offs.
• Product/UX thinking to simplify real-world lab workflows.
• Offline-first app behavior with unreliable networks.

Aufgaben

• Own the iOS app end-to-end from architecture to release.
• Push camera and on-device models to their limits for reliable recordings.
• Design capture workflow in collaboration with lab staff.
• Spend time in lab to measure and decide what to build next.

Kenntnisse

Camera depth

On-device ML

Swift

SwiftUI

Architecture design

UX sense

Offline-first

Real-time CV

Tools

Xcode

Instruments

CoreML

Vision

AVFoundation

Jobbeschreibung

Most labs still count cells under a microscope by hand. It's slow, repetitive, and error-prone. We're replacing that manual work with software.

By combining a standard microscope with a smartphone, we run computer vision models that locate, track, and measure cells automatically in real time. We're starting with semen analysis and expanding to other routine microscopic samples.

Based in Berlin, we're a small, well-funded team founded in 2026 operating in stealth. Our goal is to make automated, reliable diagnostic analysis accessible on any phone connected to a microscope.

The role

We're looking for an iOS engineer who loves the camera. Our app turns an iPhone on a microscope into a lab instrument, and the hard problems live on the device: holding focus on a moving sample, running computer vision in real time, and capturing a recording precise enough for a clinical result. On top of that, the app has to be simple enough for a technician in a busy lab. You'll own it end to end, together with the founders.

What you'll do

• Own the app end to end, from architecture to release.
• Push the iPhone camera and on-device models to their limits, so every recording is good enough to analyse.
• Design the capture workflow with lab staff, so technicians get it right the first time.
• Spend time in the lab, measure what works, and decide what to build next.

What you bring

• Camera depth. You've built on the iOS camera stack, not just used it: AVFoundation with manual focus, exposure and white balance, and real-time frame processing. You know where the hardware's limits are.
• On-device ML. You've run models on the phone and made them fast: CoreML and Vision, quantisation, the Neural Engine, profiling with Instruments.
• Apps you've owned. You've shipped iOS apps in Swift and SwiftUI and owned them in production. You design an architecture one engineer can carry, and you can explain the trade-offs behind it.
• Product and UX sense. You turn a messy real-world workflow into something simple, and you test it with the people who use it.
• Built for real conditions. Offline-first, background uploads, interruptions, data protection. The app works when the network doesn't.
• Beyond the app. iOS is your home, but when the app needs it, you read the backend and change an API yourself.
• Correctness. You validate with numbers, not by eye. Tests are part of the feature. You reproduce bugs first and fix the cause, not the symptom.
• AI-native engineering. Coding agents are part of your daily work. You give them good context, split work into reviewable steps, and stand behind every line you ship.
• Ownership. You help shape the roadmap, push back on weak ideas, set your own priorities and raise problems early. Nobody has to chase you.
• Range. You've worked across several companies, stacks or environments. How you work counts far more than how many years you've done it.

Nice to have

• Optics or microscopy imaging.
• Apps for professional users: lab, field, clinical or enterprise.
• Regulated environments with audits: medical devices, health, finance.

What we offer

• Ownership from day one. As a founding engineer, you're part of the company through our virtual share option plan (VSOP).
• You grow with us. You help build the company from the start, and as it grows, your role grows with it.
• Real influence. You decide how we build software, and you shape the engineering team we build.
• A competitive salary. We share the range in our first conversation.
• A product that matters: a medical device for real clinics, built together with clinicians and lab staff.
• Flexible hours and office days. We work from Berlin and meet in person regularly, up to several days a week. This isn't a fully remote role.
• English is our working language. German isn't required.
• We sponsor the EU Blue Card if you're moving to Berlin.

Not the right role? See what else we are hiring for, or tell us what you would do here.