Senior Engineer, iOS - Instant Rips

Fanatics; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Fanatics Collectibles seeks an experienced iOS engineer to join the Instant Rips team. You’ll build live-break experiences on Fanatics Live, delivering auctions, chat, and marketplace features with a modern SwiftUI/TCA stack.

The role emphasizes end-to-end ownership, robust testing, and collaboration on architectural decisions. Expect on-site work in London and collaboration with AI-assisted tooling to improve outcomes.

Qualifications

• 5+ years building consumer-facing iOS applications at scale.
• Experience with AI-assisted development tooling and LLM optimization loops.
• Proficiency in Swift Concurrency and SwiftUI.
• Knowledge of The Composable Architecture (TCA).
• Experience with Tuist or XcodeGen; CI/CD pipelines.
• Static analysis (SwiftLint/Periphery) quality gates.
• Experience with livestreaming or high-throughput workloads.
• Exposure to marketplace or ecommerce iOS apps.
• 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

iOS apps

Swift Concurrency

SwiftUI

TCA

CI/CD

Static analysis

TestStore

Livestreaming

WebSocket

E-commerce apps

Sports collectibles

Tools

Tuist

XcodeGen

Job description

Fanatics is building a leading global digital sports platform. We ignite the passions of global sports fans and maximize the presence and reach for our hundreds of sports partners globally by offering products and services across Fanatics Commerce, Fanatics Collectibles, and Fanatics Betting & Gaming, allowing sports fans to Buy, Collect, and Bet. Through the Fanatics platform, sports fans can buy licensed fan gear, jerseys, lifestyle and streetwear products, headwear, and hardgoods; collect physical and digital trading cards, sports memorabilia, and other digital assets; and bet as the company builds its Sportsbook and iGaming platform. Fanatics has an established database of over 100 million global sports fans; a global partner network with approximately 900 sports properties, including major national and international professional sports leagues, players associations, teams, colleges, college conferences and retail partners, 2,500 athletes and celebrities, and 200 exclusive athletes; and over 2,000 retail locations, including its Lids retail stores. Our more than 22,000 employees are committed to relentlessly enhancing the fan experience and delighting sports fans globally.

About the Team

Fanatics Collectibles is the home of sports cards, trading cards, and collectibles for over 100 million fans worldwide. As part of the global Fanatics platform, we’re rebuilding how collectors discover, buy, sell, and experience their hobby — live, in real time, at scale.

Our flagship mobile product, Fanatics Live, is where that experience comes to life: live card breaks, real-time auctions, high-traffic chat, marketplace transactions, and deep collection management tools. The stakes are high and the traffic is real — we build for peak-load moments where latency is visible and reliability is nonnegotiable.

Role Summary

You’ll join the Instant Rips iOS team — the group responsible for the live-break commerce experience on Fanatics Live. We build the surfaces millions of collectors use in real time: bidding in live auctions, joining breaks, navigating a high‑velocity chat stream, and transacting in the marketplace.

The iOS stack is modern by design. We’re SwiftUI-first, run The Composable Architecture TCA across the app, use Swift Concurrency throughout, talk to our backend via Apollo GraphQL, and maintain a clean modular SPM codebase generated with Tuist. There’s no legacy UIKit app hiding under the surface — you’ll be working in a codebase you can be proud of.

AI tooling is part of how we work. We expect engineers to use it on the job, give it good context, and verify the output — not just accept it.

What you’ll do

• 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

What we’re looking for

• 5+ years building consumer-facing iOS applications at scale
• Hands‑on with AI‑assisted development tooling LLM optimization loops,Xcode CLI integration)
• Swift Concurrency — async/await, structured concurrency, Sendable, SwiftMacros
• SwiftUI — stateless/stateful view patterns, NavigationStack, performanceaware composition
• The Composable Architecture TCA — Reducer/Store/Action/State, effect management, parent‑child delegation, testing with TestStore
• Tuist or XcodeGen — project generation tooling; no committed .xcodeproj CI/CD — Bitrise, Fastlane, or equivalent automated build/test pipelines Static analysis — SwiftLint, Periphery or equivalent code quality gates
• Structured commit/PR discipline tied to a project tracker Linear, Jira, or equivalent)
• 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

The above list of job duties is not exclusive or exhaustive and the post holder will be required to undertake such tasks as may reasonably be expected within the scope and grading of the post.
Subject to applicable laws, Fanatics Collectibles may choose to run a background check.

This role is designated as on‑site and requires working from the office five days per week.