Chief Technology Officer (Mobile app, M/F/D)

Arise is a globally active weight-loss app with over 10 million downloads. We're looking for a CTO who is a true architect on both iOS and Android — deeply skilled in iOS, able to own the existing iOS app and build the Android app from scratch, developing primarily through AI.

• Own and architect the existing iOS app — maintain, optimize, deepen, and future-proof a codebase used by millions.
• Build the Arise Android app from scratch — architecture, delivery, and long-term ownership.
• Ensure cross-platform consistency and a coherent technical vision across both platforms.
• Develop and test features that enhance the Arise experience.
• Use AI agents and automated workflows as your primary means of building, testing, and shipping — not as an occasional helper.
• Anticipate technical pitfalls and proactively design solutions.
• Collaborate with design to refine usability for a smooth user experience.
• Support monetization by integrating features with measurable business impact.

• Proven track record architecting and shipping production mobile apps, ideally as a senior engineer, lead, or technical founder.
• Deep, architect-level iOS expertise — you can own a mature codebase end to end and make the hard structural calls with confidence.
• Demonstrated ability to build an Android app from scratch to the same standard.
• Hands-on fluency building through AI — agentic coding tools, LLM-driven workflows, automated testing and release.
• Excellent problem-solving and critical-thinking skills.
• Comfortable working fully in English.
• Expert-level iOS/Swift — architecture, patterns, performance, and the judgment to keep a large app maintainable as it grows.
• Strong Android development (Kotlin) with the ability to architect a new app end to end.
• Familiarity with mobile build and release tooling (e.g. Fastlane).
• Deep understanding of Apple and Android design principles, patterns, and best practices.
• Ability to write clean, well-documented, maintainable code — and to direct AI to do the same.

• High autonomy: own the entire tech stack from idea to release.
• Clear decision-making with minimal bureaucracy.
• Work with the newest hardware and technologies.
• Complimentary Claude Max subscription.
• Flexible, remote-first role (full-time).
• Paid annual leave.
• Direct collaboration with the founder — your work will have visible impact from day one.