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Sabri Umut Sönmez

I’m Sabri! Welcome to my website. I’m a software engineer with a strong foundation in mobile development, focused on building secure, performant, and maintainable applications. This website serves as both my e-portfolio and a platform for self-expression.

At a Glance

2 App Store Apps
5+ Production Teams
3.9 GPA, Summa Cum Laude

Where I’ve Shipped

Capital One

Sept 2025 - Current

Software Engineer, Full Stack

  • Remediated DAST-identified vulnerabilities to strengthen mobile security posture and improve audit readiness in regulated fintech environments
  • Improved CI reliability by optimizing build scripts and contributing to feature flag integration for safer, controlled production releases

Fidelity Investments

Aug 2024 - Sept 2025

Mobile Developer

  • Delivered iOS widgets and high-impact features for flagship app serving millions
  • Migrated legacy async workflows to Swift Concurrency, reducing technical debt
  • Modernized notification infrastructure to improve reliability across critical flows

Tripshot

Sept 2021 - Aug 2024

Mobile Applications Developer

  • Led UI overhaul of rider-facing app, increasing App Store rating from 3.5 to 4.8
  • Designed and shipped scalable features in Swift and Objective-C for enterprise mobility platform
  • Implemented TDD (XCTest, XCUITest) and migrated legacy components to Swift

BMW

2020 - 2021

Mobile Apps & Services Intern

  • Built automated testing pipeline (Jenkins, TestCafe) and modernized JS tooling to improve release stability

Nearside

2021

iOS Engineer Intern

  • Delivered login fixes, built UI components/pages, and wrote unit tests
  • Improved analytics for debugging and support through FullStory integration

Tech I Use Most

Languages

Swift JavaScript (ES6) Objective-C Java

Frameworks

SwiftUI React Native Swift Charts Combine XCTest XCUITest

Tools & Platforms

Xcode CloudKit MapKit SiriKit Jenkins DataDog

Core

Mobile Architecture Swift Concurrency TDD UI/UX Design Code Modernization

Education

Macaulay Honors College at CUNY

B.S. in Computer Science, Minor in Mathematics

Summa Cum Laude · 3.9 GPA