Apply on Employer Site

ThredUp · 1 day ago

Staff iOS Engineer

Oakland, CA

Full-time

Hybrid

Lead/Staff

$225K/yr - $240K/yr

8+ years exp

ThredUp is transforming resale with technology and is seeking a Staff iOS Engineer to lead the development of their iOS app, which is crucial for customer engagement. The role involves setting technical direction, ensuring app performance, and mentoring engineers to enhance their skills and practices.

E-CommerceFashionRetailShopping

No H1B

Responsibilities

Set technical direction for the iOS app, ensuring long-term stability, scalability, and performance across critical user experiences

Ensure robust release pipelines, testing, monitoring, and observability practices are in place across mobile teams

Drive architectural modernization and explore strategies to reduce redundancy and accelerate development velocity (e.g., Kotlin Multiplatform), while preserving a native-first iOS experience

Collaborate with cross-functional and cross-team partners to align mobile technical strategy with product goals and business priorities

Mentor and guide engineers across mobile teams, shaping best practices and raising the technical bar

Qualification

SwiftObjective-CIOS application developmentUIKitSwiftUIConcurrencyPerformance optimizationSystem designProduct mindsetAI in mobile developmentKotlin MultiplatformConsumer-facing e-commerceMentoringCross-team collaboration

Required

8+ years of professional experience building and scaling native iOS applications

Recognized expertise in Swift and Objective-C, with strong knowledge of UIKit and SwiftUI

Proven track record of leading architectural initiatives or re-architecture efforts at scale

Deep experience with concurrency, memory management, performance optimization, and system design for mobile applications

Experience driving cross-team technical projects, influencing technical strategy beyond a single product area

Proven ability to mentor and grow engineers, shaping engineering practices across teams

A product mindset: able to connect technical decisions to user experience and business outcomes

Curiosity and excitement about leveraging AI to accelerate mobile development (e.g., code generation, testing, performance optimization)

Preferred

Familiarity with Android (Kotlin/Java) and an interest in collaborating with Android engineers to ensure platform parity is a plus

Exposure to Kotlin Multiplatform or other shared-code strategies, along with experience in consumer-facing e-commerce, search, or other high-scale user engagement applications is a plus