Marcus Delgado

Senior Mobile Developer

marcus.delgado@devmail.io · +1 555 0147 · Austin, TX · marcusdelgado.dev

Education

B.S. Computer Science2012 - 2016
University of Texas at San Antonio, San Antonio, TX
Concentration in Software Engineering; Senior capstone: cross-platform mobile framework benchmarking study

Skills

React Native · Swift / SwiftUI · Kotlin / Jetpack Compose · REST & GraphQL API integration · CI/CD with Fastlane & GitHub Actions · Firebase & Crashlytics · AWS Certified Developer – Associate · Xcode Instruments & Android Profiler · App Store Connect & Google Play Console

Links

Portfolio: marcusdelgado.dev · GitHub: github.com/mdelgado-dev · LinkedIn: linkedin.com/in/marcusdelgado

Profile

Senior Mobile Developer with 8 years building high-traffic iOS and Android applications across fintech and consumer health verticals. Specializes in React Native and Swift, with a track record of reducing app load times by 40%+ and shipping features that drove measurable retention gains. Holds an AWS Certified Developer credential and has led cross-functional teams of up to six engineers.

Work Experience

Senior Mobile DeveloperMar 2021 - Present
Finova Labs, Austin, TX
  • Architected a React Native rewrite of the flagship personal finance app, cutting bundle size by 38% and improving cold-start time from 4.1 s to 2.3 s across iOS and Android.
  • Led a team of 5 engineers to deliver a biometric authentication module that reduced login friction and lifted 30-day retention by 22% within 90 days of launch.
  • Integrated Plaid and Stripe SDKs into a unified payment flow, enabling $4.2 M in new monthly transaction volume and earning a 4.8-star App Store rating from 12,000+ reviews.
Mobile DeveloperJun 2018 - Feb 2021
Wellpath Digital, Denver, CO
  • Built a Swift-based iOS telehealth scheduling module used by 180,000 active patients, reducing no-show rates by 17% through push-notification reminders tied to calendar sync.
  • Refactored legacy Objective-C networking layer to URLSession with Combine, eliminating 94% of timeout-related crash reports and dropping ANR rate from 1.8% to 0.1%.
  • Collaborated with UX and backend teams to ship a dark-mode redesign in 3 sprints, which correlated with a 12% uptick in daily active users among the 18–34 demographic.
Junior iOS DeveloperAug 2016 - May 2018
Sprocket Studio, San Antonio, TX
  • Developed 6 client-facing iOS apps from requirements through App Store approval, averaging a 9-day review-to-approval cycle against an industry norm of 14 days.
  • Implemented Core Data persistence and CloudKit sync for a task-management app that reached 40,000 downloads in its first quarter with a 4.6-star rating.
  • Reduced QA regression cycle from 3 days to 6 hours by introducing XCTest unit and UI test suites covering 78% of critical user paths.