Senior iOS Software Engineer

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Senior iOS Software Engineer in UK new

Navan
Full time
Email

UK
11/02/2026
Report

London

Responsibilities

Design and ship conversational interfaces and AI-driven UX patterns on iOS.
Architect and build production-grade Swift features using async/await, structured concurrency, and modern iOS APIs.
Implement context-aware experiences using behavior, preferences, and app state with strong performance and privacy considerations.
Use analytics, metrics, experimentation, A/B testing, and logging to iterate on features and improve quality.
Translate complex AI/ML capabilities into intuitive mobile interactions.
Use AI-assisted development tools while maintaining a high-quality, secure, and well-tested codebase.
Collaborate with product, design, and backend teams.

Requirements

5+ years of professional development experience with strong Swift skills and experience building high-quality iOS applications.
Deep knowledge of Swift, the iOS SDK, Swift concurrency, async/await, Task, actors, structured concurrency, and modern GCD usage.
Production experience with SwiftUI; familiarity with UIKit and interoperability is a plus.
Experience with Combine or other reactive patterns and judgment about when to use them versus async/await.
Strong understanding of iOS architecture, modularization, and stateful or real-time feature development.
Experience with JSON, REST, WebSockets, streaming APIs, robust networking, error handling, retries, and offline support.
Experience with offline storage, background processing, threading, and push notifications.
Familiarity with chat, agents, multimodal UI, conversational UX, LLM APIs, prompt design, latency handling, fallbacks, and guardrails.
Experience using AI development tools such as Claude Code or GitHub Copilot with attention to code quality and security.
Track record building consumer-facing apps, ideally including App Store launches and iteration based on user feedback and metrics.
BS in Computer Science or a related technical field.

Navan

Navan is the global AI-powered business travel and expense platform that makes travel easy for frequent travelers. From finding flights and hotels, to automating expense reconciliation, with 24/7 support along the way, Navan delivers an intuitive experience travelers love and finance teams rely o...

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