Senior iOS Engineer
Designer Fund is a venture capital firm that invests in early-stage tech companies using design to improve health, sustainability, or prosperity for people. It backs founding teams, particularly those with design backgrounds, across sectors like fintech, healthcare, climate tech, and developer tools.
About Designer Fund
Designer Fund is an early-stage venture capital firm that invests in tech companies leveraging design to drive positive outcomes in health, sustainability, and financial prosperity. Its portfolio spans a wide range of sectors including financial infrastructure (Stripe), preventative health (Omada), collaborative tools (Notion), developer tools (Netlify), product management (Linear), payroll and benefits (Gusto), design tools (Framer), and healthcare infrastructure (Commure), among dozens of other companies across fintech, climate tech, healthcare, EdTech, and AI. The firm also runs 'Designer Founders,' a community and platform highlighting designers who have gone on to found and lead companies, reflecting its focus on backing design-driven founders and design-centric startups from early stages through growth and acquisition.
Skills
About the Role
You'll be a core member of the rider mobile team, owning the iOS experience that millions of riders depend on every day - from booking rides and managing accounts to the underlying mobile infrastructure that makes it all work seamlessly. You'll work on a product that has real, tangible impact on how people move through their cities, collaborating closely with designers, backend engineers, and product managers who care deeply about the quality of what they ship. If you're an iOS engineer who takes pride in building polished, high-performance mobile experiences and wants to see your work used at real scale, this is the role for you.
Requirements
- 5+ years of hands-on iOS development experience, with deep proficiency in Swift and strong knowledge of the iOS application lifecycle
- Strong grasp of iOS app architecture patterns, SwiftUI and UIKit, and RESTful APIs
- Expertise in performance optimization, memory management, and debugging complex issues
- Knowledge of concurrent programming using async-await, GCD (Grand Central Dispatch) or Operation Queues to handle background tasks and async operations efficiently
- Experienced with iOS frameworks such as Core Location, MapKit, and familiar with third-party mapping tools such as Google Maps and Mapbox
- A natural collaborator and mentor
- Proactive and genuinely curious about new technologies
Responsibilities
- Collaborate closely with designers, backend engineers, and product managers in order to deliver a high-quality, user-friendly rider application
- Own the development and continuous improvement of the rider iOS app - building new features across booking, account management, and the core rider journey while keeping the experience fast, reliable, and intuitive
- Architect and evolve the mobile infrastructure services that power the apps, making thoughtful decisions about app architecture patterns, performance optimization, and memory management
- Diagnose and resolve critical production issues under pressure, minimising disruption to riders and acting as a key line of defence when things go wrong in live environments
- Mentor and guide engineers on the team - sharing expertise in iOS development, reviewing code thoughtfully, and helping others grow
Benefits
- Free medical plans
- 401K matching