We are seeking a Senior iOS Engineer to own the client side implementation of how members join, pay, and stay with Raya. Member Experience owns the full member lifecycle – applying, onboarding, payments, and lifecycle management – and this role owns the surfaces where that lifecycle becomes revenue: the paywall, the purchase experience, and the subscription state a member sees in the app.

This is a payments specialist role, not a generalist iOS role with some payments attached. The person we hire has built and operated native Apple StoreKit2 integrations more than once, with total depth and ownership – they wrote the integration, shipped it, and were still there when the edge cases showed up. They also bring production Stripe experience for a consumer product. They will work as a close peer to our server team, which owns App Store Server Notifications V2, entitlement source of truth, and reconciliation.

Requirements:

Responsibilities

- Own the iOS subscription and payments stack end to end from product configuration, purchase and restore flows, entitlement state, offers, to the paywall surfaces members see.

- Serve as the client-side authority on StoreKit2: architect the integration, set the patterns, and handle the lifecycle edge cases. Including interrupted and deferred purchases, upgrades, downgrades, crossgrades, refunds, revocations, billing retry, and price increase consent.

- Partner closely with the server team on entitlement correctness, working across the client/server boundary on signed transaction verification, reconciliation,



and idempotency so that what the app shows and what the backend believes never diverge.

- Work with product, design, and data on pricing, offers, and paywall experimentation. Scoping and shipping revenue-affecting work from concept through launch and measurement.

- Contribute broadly to a large, long-lived iOS codebase: architecture and system design, performance, testing practices, and deliberate management of tech debt.

- Act as the client-side escalation point for member payment issues, with the monitoring and release discipline to catch problems before members do.

- Raise the engineering bar through code review, technical mentorship, and clear written specs.

Requirements

- 7+ years of professional iOS development experience, with strong proficiency in Swift, UIKit, MVVM, and reactive programming.

- Expert-level, hands-on Apple StoreKit2 experience: you have built and operated StoreKit2 integrations end to end at least twice in production, owning product configuration, purchase and restore flows, Transaction.updates, current entitlements and subscription status, introductory / promotional / win-back offers, offer codes, and sandbox-through-production testing.





- Direct, native StoreKit2 integration experience and depth that goes beyond consuming a third-party abstraction layer. You can reason about the framework itself.

- Production Stripe Payments/Subscriptions experience for a B2C product (secondary to Apple, but required).

- Experience collaborating with a server team on subscription correctness including App Store Server Notifications V2, signed transaction verification, reconciliation, and idempotent handling of duplicate events.

- A track record of building and shipping consumer mobile applications to scaled audiences, with strong judgment on architecture, performance optimization, and user experience.

- Strong consumer product sense and the ability to partner effectively with product, design, and data on revenue-affecting work.

- Proven ability to lead projects from concept through launch, balancing speed and quality, and to own what you ship after it ships.

- An AI-forward mindset, with curiosity about applying emerging technologies to improve developer and product experiences.

Nice to Have

- Experience migrating a production app from StoreKit1 to StoreKit2.

- Experience running a subscription product across two payment processors simultaneously, with a single active entitlement per member.

- Familiarity with SwiftUI alongside UIKit, and with modularizing a large iOS codebase.

- Experience with paywall and pricing experimentation frameworks, and with subscription analytics.

📌 Senior iOS Engineer, Member Experience (España)
🏢 raya
📍 España