Staff iOS Engineer (San Francisco) chez Scrollmark

Join us in a high-impact role where you’ll craft a world-class iOS experience that powers AI social media workflows for creators. At Scrollmark, we’re building SocialGPT (https://www.gpt.social/), your copilot for social media content creation—helping creators and brands plan, create, and grow with confidence.

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

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

What You’ll 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 We’re Looking For

• 5+ Years Shipping iOS Apps: You’ve built and maintained production iOS apps with meaningful scale and ratings, and you can point to features you owned end-to-end

• Expertise in Swift/SwiftUI (and UIKit where pragmatic): Strong command of async/await, Combine (or equivalents), navigation patterns, state management, and accessibility

• Product & System Design: Translate creator needs into elegant flows; design scalable architectures (modularization, dependency injection, background tasks, data sync, caching)

• Media & Performance Chops: Hands-on with AVFoundation/PhotoKit, background processing, offline caching, networking, and rigorous performance tooling (Instruments, MetricsKit)

• Platform Integrations & Quality: Experience with notifications, widgets, deep links, share extensions, authentication, analytics/experimentation, and App Store submission guidelines

• Self-Starter, Creator-Obsessed: You thrive in ambiguity, ship with craft, and care deeply about the details that make creators faster and more confident

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.