ThredUp · 18 hours ago
Staff iOS Engineer
Oakland, CA
Full-time
Hybrid
Lead/Staff
$225K/yr - $240K/yr
8+ years expThredUp is transforming resale with technology, focusing on secondhand fashion. As a Staff iOS Engineer, you will lead the technical direction of the iOS app, ensuring its stability and scalability while mentoring other engineers.
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
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
Benefits
Comprehensive medical & dental coverage
Vision
401k
Life and disability insurance
Company
ThredUp
ThredUp is a fashion resale marketplace that enables individuals to buy and sell clothing for women and children.
1001-5000 employees
Funding
Current Stage
Public CompanyTotal Funding
$304.12MKey Investors
Goldman Sachs Investment PartnersHighland Capital PartnersRedpoint
2021-03-26IPO
2019-08-21Series F· $175M
2015-09-10Series E· $81M
Leadership Team
James Reinhart
CEO
Sean Sobers
Chief Financial Officer
Recent News
2026-01-08
2025-11-27
2025-11-27
Company data provided by crunchbase