Staff iOS Engineer
Staff iOS Engineer owning end-to-end iOS architecture, performance, and real-time trading experiences. Requires deep experience shipping high-quality iOS apps in trading/financial domains.
About the job
What You'll Do
- Own the iOS product. Take end-to-end ownership of Polymarket's iOS experience, from technical architecture and performance to product quality and release discipline.
- Set the technical direction. Make and own architectural decisions for the iOS platform, ensuring the codebase is built to scale and maintained with rigor as the product grows.
- Build for real-time. Design and implement experiences that handle live market data, fast-moving prices, and real-time order state in a way that feels fast and reliable to users.
- Raise the engineering bar. Lead code reviews, establish strong iOS engineering standards, and help grow the capability of the broader mobile team.
- Partner across the company. Work closely with product, design, and backend teams to align on priorities, define APIs and data contracts, and ship high-quality experiences end-to-end.
- Contribute to mobile strategy. Help shape how Polymarket thinks about mobile as a platform, including architecture decisions that set up the team for scale.
What We're Looking For
- Significant iOS engineering experience, with a track record of shipping and owning high-quality iOS applications in production
- Deep experience building trading, financial, or sportsbook applications – you understand the product domain and the technical demands that come with it
- Strong knowledge of Swift and the iOS SDK, with solid instincts around performance, memory management, and real-time data handling
- Experience building apps that consume live data feeds and display fast-moving information reliably and smoothly
- A high bar for product quality: you care about how things feel, not just whether they work
- Comfortable operating with broad ownership in a fast-moving environment
- Strong cross-functional communication skills: you work well with product, design, and backend engineers
- (Plus) Familiarity with WebSockets, streaming APIs, or other real-time data infrastructure
- (Plus) Experience leading or mentoring iOS engineers
- (Plus) Background in a high-growth startup environment
Benefits
- Competitive salary & equity
- Unlimited PTO
- Full Health, Vision, & Dental coverage
- 401k match
- Hardware setup: new MacBook Pro, big display, & accessories
Skills
Swift, Ios Sdk, WebSockets, Real-Time Data, Performance Optimization, Memory Management, Live Data Feeds, Trading Applications, Code Review, Mentoring
Similar jobs
iOS Engineering jobs
United States
Build and enhance scalable iOS and platform experiences that help Reddit community builders grow thriving communities. The role requires 5+ years of software engineering experience, end-to-end project ownership, and strong collaboration skills.
Beacon AI
San Carlos, CA
Build iOS and wearable-integrated health applications for flight crews, turning real-time biometric data into secure, intuitive visual experiences. The role requires 3+ years of iOS development or equivalent experience, plus Swift, SwiftUI, HealthKit, and mobile data visualization expertise.
Beacon AI
San Carlos, CA
Build high-performance iPad-focused iOS applications for an Electronic Flight Bag and flight safety platform. The role requires Swift experience, offline-first and real-time data expertise, hardware integration, and a focus on reliability in safety-critical environments.
Mirage
New York, NY
Build and ship native iOS video-creation products spanning user interfaces, graphics rendering, and audio/video processing. The role requires at least two years of professional experience and expertise in modern iOS frameworks.
Beacon AI
San Carlos, CA
Develop and maintain user-facing iOS applications for a flight safety platform, integrating real-time data and APIs. The role requires at least 2 years of iOS development experience or equivalent project-based experience, with Swift and SwiftUI expertise.