Senior (iOS) Software Engineer in London

Senior (iOS) Software Engineer in London

London Full-Time 67500 - 82500 £ / year (est.) No working from home possible
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At a Glance

  • Tasks: Design and develop innovative iOS features using AI for a next-gen travel app.
  • Company: Join a cutting-edge tech company revolutionising travel with AI.
  • Benefits: Competitive salary, flexible work options, and opportunities for professional growth.
  • Other info: Collaborative environment with a focus on creativity and career advancement.
  • Why this job: Be at the forefront of AI technology and enhance user experiences in travel.
  • Qualifications: 5+ years in iOS development with strong Swift skills and a passion for innovation.

The predicted salary is between 67500 - 82500 £ per year.

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 behaviour, 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.

Senior (iOS) Software Engineer in London employer: TripActions

Navan is an exceptional employer that champions innovation and collaboration in the business travel and expense management sector. With a vibrant work culture that prioritises employee growth and engagement, team members are empowered to lead high-impact initiatives while enjoying unique opportunities for professional development. Located in a dynamic environment, Navan offers competitive benefits and fosters a community where creativity and strategic thinking thrive, making it an ideal place for those seeking meaningful and rewarding careers.

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Contact Details:

TripActions Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Senior (iOS) Software Engineer in London

Join Local Tech Meetups

Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at TripActions or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!

Contribute to Open Source Projects

Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to TripActions.

Tap into Online Developer Communities

Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like TripActions.

Explore Job Boards Specifically for Tech Roles

Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like TripActions that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!

We think you need these skills to ace Senior (iOS) Software Engineer in London

Swift
iOS SDK
Swift Concurrency (async/await, Task, actors)
Structured Concurrency
SwiftUI
Combine
iOS Architecture (MVVM, Clean Architecture)

Some tips for your application 🫡

Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.

Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at TripActions.

Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at TripActions and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!

Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!

How to prepare for a job interview at TripActions

Brush Up on Your Coding Skills

For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.

Know Your Tools and Frameworks

Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If TripActions uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.

Showcase Your Projects

Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.

Prepare for Behavioural Questions

While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.