Senior iOS Engineer: Live Auctions & Real-Time Commerce

Fanatics; New York (NY); On-site; USD 150,000 - 210,000; Full time

Job summary

Fanatics Collectibles seeks an experienced iOS engineer to join the Instant Rips team, delivering live-break commerce on Fanatics Live. You’ll build interfaces for auctions, breaks, chat, and marketplace with a SwiftUI-first approach and modern architecture.

You will own features end-to-end, drive testing and CI/CD, and mentor junior engineers while collaborating on architecture decisions to raise the team’s quality bar. This NYC role emphasizes high performance and reliability.

Qualifications

• 5+ years building consumer-facing iOS applications at scale.
• Experience with livestreaming, real-time auctions, or high-throughput WebSocket/subscription workloads.
• Exposure to marketplace or e-commerce iOS applications.
• Passion for sports cards, collectibles, or live commerce.

Responsibilities

• Design and ship production iOS features across the live-break experience: auctions, stream viewing, chat, marketplace, and collector tools.
• Own features end-to-end — API contracts, TCA reducers, SwiftUI views, testing, and release.
• Write genuine test coverage: unit tests with mock dependencies, TCA
• TestStore assertions, async test patterns — not coverage theater
• Review pull requests with judgment: surface real defects, prioritize what matters, coach on what to let go
• Contribute to architectural decisions: modularization strategy, effect management, failure handling
• Mentor engineers earlier in their career and raise the quality bar across the team

Skills

Swift Concurrency

SwiftUI

The Composable Architecture (TCA)

AI tooling

Live/real-time iOS

End-to-end ownership

Mentoring engineers

Code review

Architectural decisions

E-commerce iOS experience

Tools

Tuist

XcodeGen

CI/CD tooling (Bitrise, Fastlane)

SwiftLint/Periphery

Job description

Fanatics Collectibles seeks an experienced iOS engineer to join the Instant Rips team, delivering live-break commerce on Fanatics Live. You’ll build interfaces for auctions, breaks, chat, and marketplace with a SwiftUI-first approach and modern architecture.

You will own features end-to-end, drive testing and CI/CD, and mentor junior engineers while collaborating on architecture decisions to raise the team’s quality bar. This NYC role emphasizes high performance and reliability.