Lead Product Engineer, Engagement

Neko Health AB; Greater London; On-site; GBP 110,000 - 140,000; Full time

Job summary

Neko Health AB is seeking a Lead Product Engineer for Engagement to shape the app that follows a member from scan to home. You’ll join a pod of engineers and take member problems from idea to production, owning features end-to-end for iOS, Android and web.

The role emphasizes performance, gestures and smooth transitions, with HealthKit and Health Connect integrations, wearables, push notifications, and a structured release pipeline from build to staged rollout.

Qualifications

• Experience building mobile apps with real customer usage, especially React Native, plus native Swift or Kotlin.
• Shipped consumer features end-to-end and can adapt to different tools as needed.
• Familiar with app store release processes and keeping an app crash-free.
• Daily use of AI coding tools, and you can demonstrate what you shipped with them.
• Collaborates well with product, design, and other teams, translating technical decisions into member impact.

Responsibilities

• Ship to production in the first week and own a meaningful part of the app within the first month: native platform, health data, notifications or clinic screens.
• Deliver member-facing features end-to-end in React Native, with Swift or Kotlin where needed, across platforms and web.
• Build the native platform layer: HealthKit and Health Connect, wearables, push and background work, deep links, biometrics, and release train from build to staged rollout.
• Build the clinic screens: the scan and debrief experiences.
• Maintain quality with AI tools: crash-free rate, performance, and intuitive user experiences on every screen.

Skills

React Native

Swift

Kotlin

Cross-functional collaboration

AI tools

Tools

HealthKit

Health Connect

Next.js

TypeScript

Azure DevOps

Job description

Mission

Neko is redefining what prevention means, from treating illness when it arrives, to sustaining health before it’s ever at risk. Our mission: make data-driven, preventative care accessible to more people, before symptoms appear.

Mission

Neko is redefining what prevention means, from treating illness when it arrives, to sustaining health before it’s ever at risk. Our mission: make data-driven, preventative care accessible to more people, before symptoms appear.

In a single, non-invasive visit under an hour, proprietary technology and direct clinical care combine to deliver personalised, actionable insights. It’s a team that thinks in 10x, not 10%. Every role here plays a part in building a world where prevention is the norm, and where your work genuinely helps people live longer, healthier lives.

Role Purpose

We are looking for a Lead Product Engineer for Engagement: someone who has shipped consumer apps people love and wants to build the app that follows a member home from their scan. You join a pod of four to six engineers and an Engineering Pod Lead, and you take member problems from idea to production.

Engagement owns the Neko app on iOS, Android and web, and everything around it: wearables, notifications, and the screens members meet during the scan and the debrief with their doctor. Members trust us with their health, and every interaction either deepens that trust or loses it. You care about the details that make an app feel great: performance, gestures, transitions.

What You’ll Deliver in the First 6–12 Months

• Ship to production in your first week and own a meaningful part of the app within your first month: native platform, health data, notifications or clinic screens.
• Ship member-facing features end to end in React Native, with Swift or Kotlin where needed, on both platforms and web.
• Build the native platform layer: HealthKit and Health Connect, wearables, push and background work, deep links, biometrics, and the release train from build to staged rollout.
• Build the clinic screens: the scan and debrief experiences.
• Hold the quality bar with AI tools in your daily loop: crash‑free rate, performance, and the details members feel on every screen.

Minimum Qualifications

• Experience building mobile apps with real customer usage: deep React Native, with real Swift or Kotlin.
• You have shipped consumer features end to end, and you solve the problem regardless of the tool.
• Experience with an app store release process and what it takes to keep an app crash‑free.
• Daily use of AI coding tools, and you can show what you have shipped with them.
• You work well with product, design, and other teams, and translate technical decisions into what they mean for members.

Preferred Qualifications

• On‑device health data (HealthKit, Health Connect), wearables or notifications at scale.
• Health, fitness, or behavioral products where engagement made a real difference to people’s lives.
• A strong eye for motion and animation on mobile.

Our Stack

• Frontend: React, React Native, TypeScript, Swift and Kotlin where needed, Next.js, Sanity, Vercel
• Backend: C#, Node, Cosmos DB
• Design: Figma
• Tooling: Azure DevOps, Claude Code