Senior Mobile Engineer

4 days ago

Sydney, New South Wales, Australia 7a9a8181-fffc-483c-b5c1-fad9bc319649 Full time $120,000 - $180,000 per year

ADHD care is broken, but we're fixing it. Kantoko makes high quality ADHD care accessible, from diagnosis to long term support and care.

This is a rare opportunity to be an early engineer in a fast-moving startup led by a successful founder (prev startup acquired by American Express). You'll have an outsized impact on the product, processes, and engineering culture.

Working at Kantoko, you have a direct impact on our 1000+ patients. We're changing people's lives and your work directly contributes to this every day.

We're looking for a Senior Mobile Engineer (React Native) who loves their craft and is excited to help build the future of mental health care from the ground up.

Once in a lifetime opportunity to join a fast-growing health startup as a Senior Mobile Engineer

About the role:
  • As Kantoko's Senior Mobile Engineer, you'll own the Patient Mobile App from initial architecture through to App Store / Play Store release and beyond.
  • Work with product, design, and operations to turn (sometimes very rough) ideas into scoped features and shipped code.
  • Define and evolve our mobile architecture, testing strategy, and release pipeline (Expo EAS, CI/CD, over-the-air updates).
  • Implement and own mobile observability (crash reporting, analytics, alerts) and a predictable release train.
  • Lead core platform plumbing: push notifications, deep links, secure/auth flows, permissions, and accessibility.
  • We see engineers as problem solvers – you'll be involved directly in the what, when, and how of product development, not just handed tickets.

⠀

⠀What you'll bring:
  • You're excited about joining an early-stage startup (12 people) and taking full ownership of the mobile app from day one.
  • You ship fast and iterate fast – you're comfortable getting a v1 into users' hands and improving it weekly.
  • You have deep experience with React Native and Expo, and strong Typescript proficiency.
  • You have shipped at least one meaningful mobile app to production (App Store / Play Store) as a primary contributor and supported it in the wild.
  • Your architecture instincts are solid: navigation, state management, error handling, etc.
  • You're passionate about great performance and smooth UX.
  • You're pragmatic and know how to prioritise effectively.
  • You're excited to work closely with designers and other engineers to ship great experiences.

Formal education or big-name logos on your CV don't matter to us – your ability to execute, own outcomes, and work well with the team is what we care about.

Current / Planned Mobile Stack:

  • React Native + Expo
  • TypeScript
  • Expo EAS / CI/CD and OTA updates
  • Backend APIs built on Python/Django (existing web platform)

Why work with us:

  • Hybrid working environment - 3 days in the office.
  • Own a piece - generous ESOP plan.
  • Great team culture - work alongside our small and quirky team.
  • Embrace the purple - we celebrate what makes people unique and thrive when everyone feels safe to bring their full self to work
  • Have an impact - rare opportunity to have a direct positive impact on patients every day.

If you have any additional questions about careers at Kantoko you can email us at

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