Lead Mobile Engineer, Performance

Take responsibility for startup time, rendering performance, and runtime efficiency across Polymarket's mobile platform, with measurable targets and a clear plan to hit them

Define the architecture, standards, and tooling that govern how Polymarket approaches mobile performance: memory management, rendering pipelines, network efficiency, and background processing

Identify and eliminate bottlenecks in app startup, screen transitions, real-time data rendering, and network request handling across iOS and Android

Design efficient data fetching, caching, and synchronization architectures that minimize latency and keep the app responsive under varying network conditions

Instrument real user monitoring, crash reporting, frame rate tracking, and synthetic testing so the team has continuous, actionable visibility into performance regressions

Establish benchmarks, budgets, and standards that keep performance a first-class concern as the product and mobile team grow

Deep experience in mobile performance engineering at significant scale, across iOS, Android, or both

Strong expertise across the mobile performance stack: rendering, memory management, network optimization, background processing, and app startup

Proficiency in Swift and/or Kotlin, with a strong understanding of how the underlying mobile runtimes, rendering systems, and OS scheduling interact

Experience with real user monitoring, frame rate profiling, and building observability systems that surface regressions before users feel them

A rigorous, measurement-driven approach — you don't guess at performance problems, you profile, instrument, and prove them

Technical leadership experience — you've set direction, raised the bar across a codebase, and influenced how a broader engineering team thinks about performance

(Plus) Familiarity with real-time data applications, live market feeds, or trading products on mobile

(Plus) Background in fintech or other data-intensive consumer mobile products

Base salary range: $250,000 to $500,000 annually, plus equity and benefits.

This range reflects a good-faith estimate for this position. Experience levels vary widely within a title here, so please reach out even if your expectations fall outside it. We're always happy to chat.