Lyfta is one of the fastest-growing strength training apps, with millions of workouts logged. We’re looking for a hands-on, all-round iOS Engineer who can take full ownership of our iPhone and Apple Watch apps.

This role is ideal for someone who loves shipping features end to end, improving app stability, and working closely with a technical founder.

What You’ll Do

• Build and maintain all core features in the iOS app: workout tracking, exercise logging, timers, analytics, and offline handling.

• Lead development of our WatchOS experience and ensure reliable syncing with the iPhone.

• Work on HealthKit integrations (heart rate, calories, training sessions).

• Improve StoreKit flows including premium activation, restore purchases, and paywall experiments.

• Debug and optimize performance, caching, and app state issues.

• Collaborate with backend engineering to refine API design.

• Ship features quickly, own problems, and improve the training experience for thousands of athletes.

  
  

What We’re Looking For

• Strong experience building Swift iOS apps in production.

• Comfortable across UI, networking, persistence, concurrency, and background tasks.

• Experience with WatchOS, HealthKit, or StoreKit is a strong plus.

• Able to debug complex issues and improve stability without handholding.

• Startup-ready: fast, independent, takes ownership.

  
  

Why Join Lyfta

• Direct ownership of the entire iOS and WatchOS experience.

• Small, fast-moving team with clear impact.

• You ship weekly, see user impact instantly, and help shape a product loved by lifters worldwide.