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Senior iOS Engineer - SaaS

Job Work from home
Posted 31 Oct 2025
Share:
Work experience
3 to 10 years
Full-time / part-time
Full-time
Job function
Degree level
Required language
English (Fluent)

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Join Treatwell as a Senior iOS Engineer

Senior iOS Engineer
We’re looking for a talented, friendly and open Senior iOS Developer to help build our customer facing apps.

Here in the Treatwell tech team, we believe in Agile principles and values. Our teams leverage Scrum and XP practices, we love Domain-Driven Design (DDD), and we are embracing eventual consistency in our new services. We like to use the right tech for the job but we don’t get seduced by the latest shiny fads.

Our current tech stack includes Java 8, Spring, Hibernate, ES2015, NodeJS, ReactJS (both client and on NodeJS server-side), Docker, Firebase, and RabbitMQ, as well as iOS and Android apps. Everything runs in AWS.

Our iOS stack consists primarily of Swift. We enjoy protocol-oriented programming and using the latest features of Swift such as SwiftUI, Combine, and async/await. We use SPM for third-party libraries and internal app modules. We believe in a testable environment, with test coverage across the full testing pyramid, including unit tests, integration tests, end-to-end, UITesting, and PACT consumer-driven contract tests. Our code lives in Gitlab and we use Xcode Cloud for builds, tests, and deployments.

We do things well, but we're not complacent. We want to do great work and we want to be known for it. We're looking for people who can help us to continue to grow and improve as a team.

You will be responsible for:

  • Working as part of a cross-functional Agile team writing and shipping clean, well-documented, and easy-to-maintain code frequently
  • Working on a variety of exciting technologies (iOS SDKs, async/await, UIKit, SwiftUI, SPM, Xcode Cloud)
  • Deploying the application through automated pipelines in CI/CD and monitoring it using mParticle and Mixpanel for business metrics
  • Helping us to realise this vision and accelerate the journey, knowing what great technology looks like and mentoring our existing team
  • Creating and maintaining user-centric applications whilst improving and updating the native mobile app ecosystem
  • Understanding and translating project requirements into technical specifications by collaborating with cross-functional teams
  • Troubleshooting and fixing bugs and technical problems
  • Keeping up-to-date with the latest trends and emerging technologies released by Apple

About You:

  • You have solid experience in mobile software development on the iOS platform
  • You’ve built high-quality mobile interfaces using modern technologies and practices
  • You know good UX and visual design when you see it
  • You’ve been part of a high-performing, autonomous Agile development team and you get a kick out of shipping
  • You like learning new skills and taking on tasks beyond your usual remit – maybe even some backend development tasks!
  • You’re a good communicator, fun to work with, and enjoy being part of a vocal, passionate team
  • You’re active in the software development community, whether through blogs, meetups, personal projects, or open source contribution

About Treatwell

Hi, we’re Treatwell. Nice to meet you.

We’re a team of 700 passionate and brilliantly talented people across Europe. We’re the industry’s smartest salon management software, all connected to Europe’s leading bookings platform, working with over 50,000 salon partners across 13 countries, processing over 8 million bookings every month. And… breathe.

But we’re not done yet. We’re on an exciting journey to digitally revolutionise the hair and beauty community.

If this excites you, we might just have the role for you.

We'll treat you with:

  • 28-days holiday, plus bank holidays
  • Monthly 40EUR Treatwell vouchers so you can treat yourself too
  • Enhanced pension plan
  • Growth funds for you to develop and grow with your team
  • Daily delicious lunch for a small contribution
  • Mental well-being support for you & family members

Met het beste beauty-boekingsplatform in Nederland verbinden we klanten met meer dan 4000 salons. Zo maken we het makkelijker dan ooit om haar-, schoonheids-, en wellnessbehandelingen te boeken.
We zijn meer dan een alleen een marktplaats, wij geven saloneigenaren de kracht om met onze slimme software hun bedrijf te laten groeien. Onze kernwaardes:
💡 Think like a (salon) owner
✨ Treat everyone well
🏆 Play to win, together
📅 Make every appointment count

IT
Amsterdam
Active in 13 countries
92 employees
40% men - 60% women
Average age is 31 years