Clodagh Farrell

Overview

Staff iOS Engineer at Nimbus Systems, focused on iOS apps. Rebuilt onboarding in SwiftUI and lifted day-one retention 8%. Shipped 22 launches on the iOS team without a rollback. Before that: AIB and BBC. Most at home with SwiftUI and XCTest. Learning woodworking.

Fastest replies in the morning

Experience

1. Staff iOS Engineer

   Oct 2025 - Present
   Nimbus Systems · 1 yr 1 mo · Full-time · Manchester, UK
   • Wrote the SwiftUI service that now handles 12 million requests a day.
   • Reduced cloud spend on iOS by 28% in two quarters.
   • Rebuilt onboarding in SwiftUI and lifted day-one retention 8%.
2. Engineering Manager

   Jul 2023 - Oct 2025
   AIB · 2 yr 3 mo · Full-time · Manchester, UK
   • Took crash-free sessions from 96.3% to 99.6%.
3. Senior iOS Engineer

   Feb 2020 - Jul 2023
   BBC · 3 yr 5 mo · Full-time · Manchester, UK
   • Moved 85% of iOS traffic off a legacy monolith without a customer-facing incident.
   • Brought on-call pages for iOS down from 20 a week to 3.
4. iOS Engineer

   Feb 2018 - Feb 2020
   GSK · 2 yr · Full-time · Manchester, UK
   • Rebuilt onboarding in SwiftUI and lifted day-one retention 5%.
   • Shipped a rewrite that took build times from 18 minutes to under 6.
5. Senior iOS Engineer

   Aug 2015 - Oct 2017
   PwC · 2 yr 2 mo · Full-time · Manchester, UK
   • Led the migration of 34 services to Core Data.
   • Grew the iOS team from 3 to 13 engineers.

Projects

No references yet.

Education

1. Durham University

   BA, Computer Science
   2010 - 2013