Emma Mason

S

Senior iOS Engineer at Fidelity Investments · IOS apps · UIKit, Combine

Fidelity Investments
Chicago, IL · CT (UTC-6)
5+ years experience
UCLA
English
Open to work
Messaging unavailable

Overview

Currently at Fidelity Investments, where I work on iOS apps. Took crash-free sessions from 96.7% to 99.6%. Before that: PayPal and Salesforce. Most at home with Swift and Core Data. Cyclist - trying to do a century this year.

Good reasons to reach out
  • Roles in iOS apps
  • Working sessions on Combine
  • Speaking or podcast invitations
Please don't message about
  • SEO and link-building offers
  • Unpaid work or spec projects

Usually replies within a day

Skills
CombineSwiftCore DataSwiftUIUIKit
Open to workLooking for a role
closes in 3 months

Next role: iOS Engineer in food delivery, Chicago or hybrid

Target roles
IOS Engineer
Level
Senior
Industries
Healthtech, Logistics
Work mode
Hybrid
Available
Immediately
Work authorization
Authorized to work in the IL
What I'm looking for
Early-stage company (Series A) where iOS apps is core to the product.
Not interested in
Crypto

5 years in iOS apps. Strongest at UIKit and SwiftUI. Available immediately.

Chicago, ILswiftuiuikitcore data
Open

Experience

  1. Senior iOS Engineer
    Oct 2025 - Present
    Fidelity Investments · 1 yr · Full-time · Chicago, IL
    • Grew the iOS team from 6 to 15 engineers.
    • Cut p99 latency on the iOS services from 419ms to 63ms.
    • Mentored 11 engineers through their first promotion.
  2. iOS Engineer
    Sep 2022 - Oct 2025
    PayPal · 3 yr 1 mo · Full-time · Chicago, IL
    • Took crash-free sessions from 98.9% to 99.7%.
  3. iOS Engineer
    Oct 2021 - Sep 2022
    Salesforce · 11 mo · Full-time · Chicago, IL
    • Moved 64% of iOS traffic off a legacy monolith without a customer-facing incident.

References

No references yet.

Education

  1. UCLA
    BS, Computer Engineering
    2017 - 2021

Details

Compensation expectations
What they are targeting for their next role.
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Direct contact details
Direct email and a scheduling link.
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