Staff iOS Engineer (San Francisco)

Join us in a high-impact role where youll craft a world-class iOS experience that powers AI social media workflows for creators. At Scrollmark, were building SocialGPT (), your copilot for social media content creationhelping creators and brands plan, create, and grow with confidence.

Weve raised $8M in seed funding from top-tier investors including Mayfield and Jackson Square Ventures. As an early-stage startup, were looking for a senior iOS engineer who obsesses over performance, polish, and creator workflows. Youll work directly with our CTO and partner across product, design, and backendowning features end-to-end, from prototype to App Store release. Youll also set the roadmap and mentor / hire as we scale.

Weve raised $8M in seed funding from top-tier investors including Mayfield, Jackson Square Ventures, Lemniscap, Shakti, and Aperiam. As an early-stage startup, were seeking team members who combine technical expertise with a self-starter attitude. Reporting directly to our CTO and collaborating closely with other engineering leaders, youll have the autonomy to drive projects that make a lasting impact.

What Youll Do

• Build the Next-Generation Creator App (iOS) : Design and ship a fast, intuitive, native iOS app (Swift / SwiftUI, UIKit where it fits) that makes content planning, creation, and publishing feel effortless.
• Design and Integrate AI Workflows : Build frontend flows to present insights and suggestions generated by SocialGPT in the most impactful way
• Performance & Usability at 60fps : Own app responsiveness, animations / haptics, offline-first UX, background uploads, and startup time using Instruments, signposts, and proactive profiling.
• Collaborate & Iterate : Prototype quickly with design and product, run user studies with creators, and refine based on in-app analytics, crash-free rate, and p99 UI latency.
• Scale & Ship Reliably : Set up feature flags, TestFlight cohorts, release notes, and crash / trace monitoring.
• Strategize & Lead : Contribute to roadmap and design system; establish mobile best practices, code standards, and testing (unit / snapshot / UITests); mentor teammates as we grow.

What Were Looking For

Nice-to-Haves : Core ML (on-device assist features), design systems, Android or cross-platform awareness (KMP / Flutter / RN), privacy / security best practices for media apps.

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