Senior Product Engineer (Barcelona - Hybrid)

Hevy is looking for a Senior Product Engineer who cares deeply about craft — someone who obsesses over pixel-perfect UI, fluid animations, and the small details that turn a good product into a great one. In this role, you’ll be the bridge between design and engineering, helping us build experiences that feel as good as they function. We’re a small, fast-moving team supporting millions of users across mobile and wearables. You’ll have a direct hand in shaping how athletes and fitness enthusiasts interact with Hevy every day — on their phones, web, their Apple Watch, and their Wear OS devices.

We’re a small, fast-moving team supporting millions of users, so your work will have a massive impact on both our product and our users.

What You’ll Do:

• Build polished, high quality UI across our React Native app, iOS wearable, and WearOS wearable, and web platforms.
• Work super closely with the Product and Design team to build and design the best fitness app on the market
• Own and elevate the visual and interactive quality bar — animations, transitions, micro-interactions, and responsive layouts.
• Collaborate closely with designers to translate Figma designs into experiences that are delightful to use.
• Identify and solve frontend challenges
• Work across the full product lifecycle — from early explorations to shipped, production features.

What We’re Looking For:

• 4+ years of experience building mobile apps with React Native.
• A strong eye for design — you notice when something is 2px off and it bothers you.
• Fluency with animation libraries (Reanimated, Lottie, or similar) and a track record of shipping smooth, performant UIs.
• Comfort working directly with designers and contributing to design decisions, not just implementing them.
• Excellent written and verbal communication skills — you can articulate tradeoffs clearly and give and receive feedback well.
• Experience with at least one wearable platform (watchOS or WearOS) is a big plus.
• Bonus: A passion for weightlifting, calisthenics, or fitness!

What We Offer:

• Hybrid work setup (2 days a week in our awesome office)
• 24 days of vacation per year
• The opportunity to work on a high-impact product with millions of active users
• Yearly offsite (previously: Mexico, Canada, Mallorca, Portugal)
• Relocation Available to our Barcelona office for the right candidate