Senior iOS Engineer

**About the company:** Metanomaly Tokyo Metanomaly is behind PixAI, a character generation engine that enables users to generate virtual characters and avatars using generative AI. Read more **Responsibilities:** Own major surfaces of a consumer app used by millions, driving them from idea to release and beyond Translate product hypotheses into polished, performant iOS experiences in Swift / SwiftUI, and set the quality bar for the team Lead UI logic shared across platforms via Kotlin Multiplatform (KMM), collaborating closely with Android and Web frontend Define how features are instrumented, run A/B experiments, and turn data into decisions on activation, retention, and engagement Own user feedback and long term product success for your area, including the key metrics that define it Mentor mobile engineers and raise the team’s overall engineering and product judgment Requirements Deep iOS engineering skills with a track record of high-impact, user-facing features owned end to end Strong in Swift and SwiftUI; confident with modern concurrency and scalable app architecture Real product sense: you have opinions about UX and can tell good from “technically done” User sympathy - you instinctively notice friction, jank, and confusing flows, and you advocate for the user in every tradeoff Data-driven: you frame hypotheses, define metrics, and let dashboards and experiments guide iteration Clear communicator who can align engineers, design, and leadership, and make tradeoffs explicit Bias toward shipping and learning, while keeping reliability and UX from decaying under growth 5–8+ years building and iterating on mobile products used by real users Experience of leading a small team (2–5 engineers) and/or driving a cross-functional team toward a product goal Experience as a product owner and/or owning key product metrics, not just shipping assigned tickets Proven track record shipping iOS features and improving them based on feedback or metrics Professional experience with B2C / consumer-facing products, presumably in gaming, social, etc. realm Hands-on experience with A/B testing or product experimentation Bachelor’s degree or above. Shipped work, judgment, and product taste matter more than credentials. An interest in anime. When applying, please include the names of your top 5 favorite niche anime at the end of your message. Nice to haves While not specifically required, tell us if you have any of the following. Kotlin / KMM experience. Experience of a fast-growing consumer app, or your own indie app on the App Store Interest in otaku culture, creator communities, or AI image generation **Requirements:** Deep iOS engineering skills with a track record of high-impact, user-facing features owned end to end Strong in Swift and SwiftUI; confident with modern concurrency and scalable app architecture Real product sense: you have opinions about UX and can tell good from “technically done” User sympathy - you instinctively notice friction, jank, and confusing flows, and you advocate for the user in every tradeoff Data-driven: you frame hypotheses, define metrics, and let dashboards and experiments guide iteration Clear communicator who can align engineers, design, and leadership, and make tradeoffs explicit Bias toward shipping and learning, while keeping reliability and UX from decaying under growth 5–8+ years building and iterating on mobile products used by real users Experience of leading a small team (2–5 engineers) and/or driving a cross-functional team toward a product goal Experience as a product owner and/or owning key product metrics, not just shipping assigned tickets Proven track record shipping iOS features and improving them based on feedback or metrics Professional experience with B2C / consumer-facing products, presumably in gaming, social, etc. realm Hands-on experience with A/B testing or product experimentation Bachelor’s degree or above. Shipped work, judgment, and product taste matter more than credentials. An interest in anime. When applying, please include the names of your top 5 favorite niche anime at the end of your message. **Nice to have:** While not specifically required, tell us if you have any of the following. Kotlin / KMM experience. Experience of a fast-growing consumer app, or your own indie app on the App Store Interest in otaku culture, creator communities, or AI image generation