Founding iOS Engineer

Sekai is building the TikTok for mini apps — an AI-driven consumer platform where people create, remix, share, and play interactive content instantly.

We are a Series A company backed by Khosla, a16z, Mayfield, and A*, with $30M raised to date. We are remote-first across all positions and are looking for ambitious, AI-native builders who want to help shape the next generation of consumer social products.

Here are Sekai’s download links:

• Android: https://play.google.com/store/apps/details?id=chat.sekai.app&hl=en_US

• iOS: https://apps.apple.com/us/app/sekai-create-remix-play/id6504506653

About THE Role

We are looking for a Senior iOS Engineer to own Sekai’s iOS app and help us build a fast, polished, AI-native consumer experience.

This role is for someone with strong iOS experience, good consumer product taste, and the ability to move quickly in a startup environment. You should keep up with the latest Apple platform updates, understand what great mobile apps feel like, and be excited to use AI to rethink how fast a small team can build.

You will work closely with Product, Design, Backend, and Mobile engineers to improve the iOS app experience, ship new features, and help define our AI-native mobile development workflow.

Responsibilities

• Own and improve Sekai’s iOS app experience, quality, and release velocity

• Build and ship consumer-facing iOS features with strong attention to speed, polish, and reliability

• Bring modern iOS best practices and the latest Apple platform knowledge to the team

• Work across native iOS, hybrid mobile, and web-based app experiences when needed

• Partner closely with Product, Design, Backend, and Mobile engineers to move from idea to shipped product quickly

• Use AI development tools to accelerate coding, debugging, refactoring, and product iteration

Qualifications

• Strong professional experience building and shipping iOS apps

• Deep familiarity with Swift, iOS SDK, and modern iOS development practices

• Experience working on consumer mobile apps with high standards for UX, performance, and reliability

• Experience owning projects end-to-end in a startup, 0-to-1 product environment, or similarly fast-moving team

• AI-native mindset: you actively use AI tools to build faster, explore better implementation paths, and improve engineering productivity

• Strong product sense and willingness to work closely with design and product teams

• NICE TO HAVE

• Experience with social, entertainment, creator, gaming, UGC, or feed-based consumer products

• Experience with React Native, Flutter, WebView, or other hybrid mobile architecture

• Familiarity with Android, backend systems, or full-stack product development

• Experience working on AI-native products or teams that heavily use AI in day-to-day development

• If you are excited about building at the frontier of AI, consumer social, and interactive entertainment, we would love to hear from you.

• At Sekai, you will work with an AI-native team, move fast, own meaningful problems, and have the flexibility to explore new ideas from an early stage.