Senior iOS Engineer

COMPANY: Simple. Study is a consumer AI platform for students. We help them stay motivated to study their subjects - everything from Biology and Mathematics to Literature and Art. Our small team has already helped +1.5 M students worldwide (UK, Ireland, Brazil, South Africa, and Australia) study better, and ~40–50k new students join us every week.

We are a remote team with a Lisbon office, having recently raised ~$4M seed round with incredible investors from Strava, OpenAI, and Meta.

RESPONSIBILITIES

• Own the mobile app end-to-end — architecture, performance, release process, and roadmap — without needing the problem framed in advance
• Partner directly with Affan on engineering strategy and with Oisin on product direction where mobile intersects with growth, onboarding, and retention
• Drive native-feel polish: smooth animations, responsive interactions, platform-specific conventions (iOS/Android)
• Work in a PLG/A/B testing environment — ship features, instrument, measure impact, iterate fast
• Own app store presence and release cadence — versioning, store optimization, crash/performance monitoring
• Potentially help grow a dedicated mobile team as the app becomes a bigger part of the business REQUIREMENTS:
• At least 5 years of experience with native iOS development
• Proficiency in Swift
• Proven experience building and shipping consumer-grade iOS applications
• Experience with SwiftUI and UIKit
• Familiarity with iOS frameworks and tools such as Combine, push notifications, and
• App Store deployment
• Experience with Xcode, XCTest, Test. Flight, and App Store Connect
• Experience with common iOS architecture and state management patterns
• Experience with debugging, performance optimization, and crash monitoring
• Bonus: Objective-C experience
• Bonus: Android development (Kotlin) CONDITIONS:
• Remote in Europe (preference: Western/continental Europe)
• Portugal relocation sponsorship possible
• Salary: no fixed budget. Flexible.
• Stock options: yes
• Contract type: full-time employment, independent contractor
• Tech Stack: Node.js, React.js, React Native, Next.js, Nest.js, Expo, Prisma, Tailwind, AWS