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iOS Engineer
ASOS
London, GBR
Full-time
Mid
Hybrid
Discovered 2 weeks ago
SwiftiOSMixpanelOptimizelyOptimizely SDKSQL
Free
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SwiftiOSMixpanel
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SwiftiOSMixpanelOptimizelyOptimizely SDKSQL
Full Job Posting
We're ASOS.
We blend our flair for fashion with our love of cutting- edge technology, but more importantly were interested in how we can bring the best out of you.
We exist to give people the confidence to be whoever they want to be, and that goes for our people too.
At ASOS, you're free to be your true self without judgment, and channel your creativity into a platform used by millions.
We're looking for a Mid-level iOS Engineer to join our Analytics & Experimentation Product Delivery Team and own how customer behavior is captured in our iPhone and iPad apps.
This role is about building reliable, well‑governed analytics and experimentation instrumentation at scale, and working collaboratively with product and engineering teams across ASOS to make the data they depend on trustworthy.
Our app is used by over 8 million active users globally, maintains an excellent App Store rating, and is built using modern iOS technologies including the latest versions of Swift.
You'll be contributing to a mature, well‑supported platform where quality, reliability and user experience matter — and you'll be the iOS voice in a team that spans web, Android, back-end and analytics engineering.
What you'll be doing:
- Implementing and maintaining analytics event tracking in the iOS app following iOS best practices and platform guidelines
- Working closely with product managers, analysts and data engineers to translate event specs into instrumentation, and making sure iOS events conform to the agreed schemas, naming conventions and data contracts
- Collaborating within an agile, cross‑functional team, and supporting other ASOS iOS teams who contribute tracking through our inner source model — reviewing pull requests and helping them validate their events
- Investigating and resolving data quality issues, such as discrepancies between platforms or missing and incorrectly populated properties, and taking ownership through to a permanent fix
- Supporting experimentation on iOS, including Optimizely SDK integration, experiment exposure and variant events, and the operational monitoring behind them
- Supporting code quality, maintainability and testing so that tracking changes ship safely and behavioral data stays reliable
About you
- Experience building iOS applications using Swift and the core iOS frameworks
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