Senior iOS Engineer (Contract) – Core Transactional Product
Remote | 6-Month Contract
We're working with a global, high-scale digital product business on a core mobile feature build focused on real-time user transactions and performance-critical flows.
This is not a standard app role, it sits right at the heart of the product, where speed, reliability, and user experience directly impact revenue.
We're looking for a seasoned iOS engineer who can come in, own complex features, and operate confidently in a distributed, fast-moving team.
What you'll be working on
Building and optimising real-time transactional user flows (high interaction, low latency)
Developing high-performance mobile features used at scale
Working closely with backend, product, and design on end-to-end feature delivery
Handling edge cases, failure states, and performance bottlenecks in critical user journeys
Contributing to architecture decisions and improving code quality across the app
What we're looking for




Strong commercial experience with Swift and modern iOS architecture (UIKit / SwiftUI)
Experience working on high-traffic, consumer-facing apps
Proven track record of building complex user flows end-to-end
Strong understanding of:
API-heavy environments and asynchronous data handling
State management and navigation in complex apps
Performance optimisation and responsiveness
Error handling, retries, and edge-case scenarios
Ability to write clean, scalable, production-grade code
Comfortable working remotely with clear communication across global teams
Why this role
High-impact product work (not a support role)
Strong engineering workplace and standards
Fully remote with a global team
Immediate start, fast-moving process
If this sounds like you, please apply today.
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