[Hiring] Senior Product Engineer, Mobile @Replika

Role Description

We need a senior engineer who can build across the whole Replika product: iOS, Android and backend. Two engineers carry all of our app work today, and there's more to build than they can ship. New product features, and the monetization features that pay for them.

This isn't a big company role. There's no org to slot into and no layer between you and the decision. You'll work directly with our CEO, product manager, designer and engineering lead in a tiny team, own features end to end, and turn ideas into product while the idea is still taking shape. You'll be expected to have an opinion, push back when a spec doesn't hold up, and then build it.

Most of the time that means moving fast. When a problem deserves real thought, you slow down and think it through. Rough is fine early on. It's not fine as a final product.

What You’ll Be Doing

• Own features end to end across iOS, Android and backend, from the idea to the thing users actually touch.
• Build the product features users notice, from avatars to new ways to spend time with their Replika.
• Build the monetization features in the apps, like paywalls, offers and pricing tests, with our growth team.
• Turn ambiguous ideas into something concrete without waiting for every question to be answered first.
• Push back on specs that don't hold up, and make the case for the version that does.
• Talk to people. Unblock people. Nobody here works in a silo.

Qualifications

• 5+ years of professional software engineering experience.
• You've built and shipped consumer mobile apps that reached real users.
• Native depth on one platform (Swift on iOS or Kotlin on Android), and features shipped on the other.
• You are not shy of backend development. API design is your bread and butter. You can ship the API your feature needs.
• A track record of driving complex features end to end, not just incremental improvements and refactors.
• You love coding and agentic engineering, and use every tool available to move faster.
• Design intuition and taste. You can tell when something feels wrong before anyone tells you.
• You shape what gets built and build it yourself.
• Fluent English. You can write a spec, or argue against one, without it needing a rewrite.

Bonus Points

• You've been a founding engineer, or early enough somewhere that you built things from zero.
• Backend experience in Python (we use FastAPI) or any JVM Language (we use Scala).
• In-app purchases and subscriptions on the App Store and Google Play.
• Real-time features: chat, voice, animation.
• You've shipped consumer products where a lot of people felt the difference.
• You've run A/B tests and used product analytics to decide what ships.

What You’ll Get

• Unlimited access to the latest AI coding assistants.
• Flexible job schedule and generous vacation policy.
• Direct impact on millions of worldwide users within months.
• Push the boundaries of applied AI in a consumer setting.
• Fully remote, able to work CET hours.