Navan

Runs business travel and expense management

Senior iOS Software Engineer

Mobile EngineeringConfirmed live in the last 24 hours

Full-timeBerlin, GermanyNo salary listedIn-person

About the Job

Requirements

At least 5 years of professional development experience building high-quality iOS apps, with strong Swift skills.
Deep understanding of Swift and the iOS SDK, including Swift concurrency (async/await, Task, and actors), structured concurrency, and modern Grand Central Dispatch usage.
Experience with SwiftUI for production user interfaces; familiarity with UIKit and interoperability is a plus.
Experience with Combine or other reactive patterns, and knowing when to use them rather than async/await.
Strong understanding of iOS architecture, such as Model-View-ViewModel, Clean Architecture, and modularization, for AI-powered, stateful, and real-time features.
Understanding of JSON, REST, WebSockets, streaming APIs, and robust networking layers, including error handling, retries, and offline support.
Experience with offline storage, background processing, threading, and push notifications.
Experience using AI development tools such as Claude Code or GitHub Copilot in a workflow, with sound judgment about code quality and security.
Familiarity with LLM-driven features, including prompt design, LLM API integration, latency handling, fallbacks, and guardrails, and/or conversational user experience.
Track record of building consumer-facing apps; ideally, experience shipping to the App Store and iterating based on user feedback and metrics.
Bachelor of Science degree in Computer Science or a related technical field.

Responsibilities

Design and ship innovative user-experience patterns for conversational interfaces and AI-driven experiences on iOS.
Architect and build production-grade, Swift-first features using async/await, structured concurrency, and modern iOS APIs.
Lead implementation of context-aware experiences using behavior, preferences, and app state, with an emphasis on performance and privacy.
Use metrics, experimentation, and validation—including analytics, A/B tests, and logging—to iterate on features and improve quality.
Translate complex AI and machine-learning capabilities into simple, intuitive mobile interactions.
Use AI tools, including LLM-based coding assistants, to accelerate development while maintaining a high-quality, well-tested codebase.
Collaborate with product, design, and backend teams.

Desired Qualifications

Familiarity with UIKit and interoperability.
Experience shipping consumer-facing apps to the App Store and iterating based on user feedback and metrics.

We’re building the next generation of travel and expense (T&E) technology using AI and large language models. Our mobile platform blends cutting-edge AI with strong product and UX so travelers get an intelligent companion, not just another booking app. The app should understand needs, anticipate requests, and deliver personalized help through conversational UI and rich, immersive interactions.

You’ll work at the intersection of AI and mobile, helping define how travelers interact with this kind of product on iOS.

What You'll Do:

Design and ship innovative UX patterns for conversational interfaces and AI-driven experiences on iOS
Architect and build Swift-first, production grade features using async/await, structured concurrency and modern iOS APIs
Lead implementation of context-aware experiences using behavior, preferences, and app state with an emphasis on performance and privacy
Use metrics, experimentation, and validation (analytics, A/B tests, logging) to iterate on features and improve quality over time
Turn complex AI/ML capabilities into simple, intuitive mobile interactions
Use AI tools (e.g., Claude Code / LLM‑based coding assistants) to accelerate development while maintaining a high‑quality, well‑tested codebase
Collaborate across product, design, and backend in a fast-moving environment

What We're Looking For:

5+ years of professional development experience with strong Swift skills, building high quality iOS apps
Deep understanding of Swift and the iOS SDK, including:

Swift concurrency (async/await, Task, actors), structured concurrency, and modern GCD usage
SwiftUI for building production UIs; familiarity with UIKit and interoperability is a plus
Experience with Combine or other reactive patterns, and when to prefer them vs. async/await

Strong grasp of iOS architecture (e.g., MVVM, Clean Architecture, modularization) suitable for AI‑powered, stateful, and real‑time features
Solid understanding of JSON, REST, WebSockets, streaming APIs and robust networking layers (error handling, retries, offline support)
Experience with offline storage, background processing, threading and push notifications
Curiosity about new interaction models (chat, agents, multimodal UI, etc.)
Experience using AI development tools (e.g., Claude Code, GitHub Copilot, etc.) as part of your workflow, with good judgment about code quality and security
Familiarity with LLM‑driven features (prompt design, integrating LLM APIs, handling latency, fallbacks, guardrails) and/or conversational UX
Track record building consumer‑facing apps; ideally you’ve shipped to the App Store and iterated from user feedback and metrics
BS in Computer Science or related technical field

Navan uses AI-assisted Automated Employment Decision Tool (Metaview) to assist with evaluating resumes against job qualifications for this role. All final decisions are made by human recruiters and hiring managers.

Human oversight: Metaview does not automatically reject candidates or make final hiring decisions. Our recruiters and hiring managers review all outputs and make the final hiring decision regarding every application.

Your rights: If you prefer to have your application reviewed without AI assistance, you may request a human evaluation by entering your email here. Your decision to do so will not affect how your candidacy is evaluated.

Please refer to our Candidate Privacy Notice for more information about our processing of personal data, and your rights.

Requirements at a Glance

Experience Level: Senior
Education: Bachelor's

Benefits

Flexible Vacation: Take time off when you need it, just work with your manager.
Healthcare: Medical, dental, and vision for you and your family.
Commuter benefits: Pre-tax transit dollars, $70 a month to ease your commute.
Parental leave: All parents (birthing and non-birthing) are eligible for paid leave.
Health and Wellness: Annual wellness stipend and access to a full spectrum of resources.
Fuel for Connection: We provide in-office snacks and lunches*, fostering community and in-person connections.
Pet Friendly: Pet insurance with preferred rates and dog friendly offices*.
401k: We care about your future and offer a 401k retirement plan program and company match.
IATAN: Employees can register and receive access to thousands of travel related discounts.
Connectivity Allowance: We support our employees ability to work seamlessly and confidently while from home and offer a bi-weekly stipend
Learning & Development: Annual Learning and Development allowance to propel professional growth

About the Company

Navan

Runs business travel and expense management

Navan runs a business travel and expense platform for companies, combining trip booking with tools that let finance teams track and control employee spending. Travelers search flights, hotels, trains, and rental cars through its website or mobile app, while administrators set booking limits and approval rules. Its expense software captures receipts, categorizes purchases, reimburses employees, and sends records to accounting systems, keeping travel and finance work in the same service. The company earns usage fees from its travel and payments business alongside software subscriptions. Navan was founded in 2015 and is headquartered in Palo Alto, California.

Company size: 1,001-5,000
Company stage: IPO
Headquarters: Palo Alto, CA
Founded: 2015

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