Senior iOS Engineer

ZipRecruiter; City Of London; Hybrid; GBP 72,000 - 85,000; Full time

Job summary

A leading tech company in London is seeking a Senior iOS Engineer to build large-scale, data-driven mobile products. The role involves making architectural decisions, mentoring engineers, and working with modern iOS tooling. The ideal candidate should have extensive experience in Swift and SDK development, with a salary up to £85k and benefits including bonuses and flexible hybrid working.

Benefits

Performance-related bonus

Share options

Private medical insurance

Enhanced pension

Minimum 25 days holiday

Flexible hybrid working

Responsibilities

• Contribute to architectural decisions and influence product direction.
• Mentor other engineers in a cross-functional environment.
• Work across both customer-facing apps and SDK for data collection.

Skills

Extensive experience building iOS applications in Swift

Skilled with modern iOS tooling (SwiftUI, UIKit, CoreData, Clean Architecture, MVVM, Dependency Injection)

Proven experience building scalable SDKs for third-party use

Strong knowledge of architecture, design patterns, and performance optimisation

Able to work across the full app lifecycle

Collaborative and product-focused

Familiarity with Agile, cross-functional environments

Interest in using AI tools to improve productivity

Job description

Overview

Senior iOS Engineer

London, UK (1 day per month in the office)

Up to £85k basic

An exciting opportunity for a Senior iOS Engineer to join a fast-moving tech company building large-scale, data-driven mobile products. This is a trusted, high-quality engineering environment where you’ll have ownership, solve complex problems, and move quickly with purpose.

As a Senior iOS Engineer, you’ll help shape and scale a sophisticated iOS app used by tens of thousands of customers. You’ll work across both the flagship customer-facing app and a SDK for real-time, on-device data collection. The role blends deep technical engineering with a product-focused mindset, with strong emphasis on usability, performance, and scalability.

In this senior position, the Senior iOS Engineer will contribute to architectural decisions, influence product direction, and mentor others, while collaborating with backend and data engineers in cross-functional squads. You’ll also have freedom to experiment with modern tooling and emerging AI solutions to enhance productivity and code quality.

Senior iOS Engineer – Key Requirements:

• Extensive experience building iOS applications in Swift
• Skilled with modern iOS tooling (SwiftUI, UIKit, CoreData, Clean Architecture, MVVM, Dependency Injection, etc.)
• Proven experience building scalable SDKs for third-party use
• Strong knowledge of architecture, design patterns, and performance optimisation
• Able to work across the full app lifecycle, from design to release and iteration
• Collaborative, product-focused, and comfortable mentoring engineers
• Familiarity with Agile, cross-functional environments
• Interest in using AI tools to improve productivity and developer experience

Senior iOS Engineer – Salary & Benefits:

• Basic salary up to £85,000
• Performance-related bonus
• Share options
• Private medical insurance & income protection
• Enhanced pension
• Minimum 25 days holiday
• Flexible hybrid working

If you’re a Senior iOS Engineer who enjoys building reliable, scalable apps in a collaborative and mission-driven team, apply today. The client is hiring with urgency.

We are an equal opportunities employer and welcome applications from all suitably qualified candidates, regardless of race, sex, religion/belief, or other protected characteristics.