Staff iOS Engineer — Real-Time Trading Mobile (Equity)

Polymarket; United States; On-site; USD 150,000 - 190,000; Full time

Benefits offered by this job

Competitive salary & equity

Unlimited PTO

Full Health, Vision, & Dental coverage

401k match

Hardware setup: MacBook Pro, display &

Job summary

Polymarket is seeking a Staff iOS Engineer to build a high-performance mobile trading experience. You’ll own the iOS product from architecture to release, delivering fast, reliable real-time market data, low-latency UI, and scalable patterns for growth.

You'll work closely with product, design, and backend teams, set technical direction, mentor engineers, and raise the bar across the mobile codebase as Polymarket scales in a fast-moving startup environment.

Qualifications

• Significant iOS engineering experience in production apps.
• Experience with trading or sportsbook apps is a plus.
• Strong Swift and iOS SDK knowledge, performance and memory focus.
• Experience consuming live data feeds and real-time UI updates.

Responsibilities

• Own the iOS product end-to-end from architecture to releases.
• Set technical direction and scale the codebase.
• Build for real-time market data and fast UI updates.
• Lead code reviews and raise engineering standards.
• Collaborate with product, design, and backend teams.

Skills

iOS engineering

Swift

Real-time data handling

Performance optimization

Trading apps

Cross-functional collaboration

Job description

Polymarket is seeking a Staff iOS Engineer to build a high-performance mobile trading experience. You’ll own the iOS product from architecture to release, delivering fast, reliable real-time market data, low-latency UI, and scalable patterns for growth.

You'll work closely with product, design, and backend teams, set technical direction, mentor engineers, and raise the bar across the mobile codebase as Polymarket scales in a fast-moving startup environment.