Miguel Cazares
Miguel Cazares headshot

Senior Mobile Engineer

Reliability First

Core engineering philosophy: assume failure, build for resilience, prove it in production.

Hard fact: software fails.

Murphy’s Law: “Anything that can go wrong will go wrong”

I design for failure

Ruthless testing. Guardrails. Defensive coding. Observability

Hard results:
💰 $1.5M+ losses prevented
⭐ 4.7 iOS rating
🛡️ 99.9% crash-free
📱 14+ years shipping production mobile apps
🌎 100% remote only
contact@miguelengineer.com

Scale evidence

Scale and delivery
Scale metrics:
📈 350k+ downloads
👥 70k+ MAU
📊 12M+ monthly screen views
React Native in → out
iOS + Android integration → full de‑integration
Push Notifications Backend
Re-architected and combined 2 services → 1, overhauled 3 systems, 0 incidents
App size 125MB → 28MB
reduced install and update sizes by 77.6%

What I’m best at

React Native
iOS
  • React Native and iOS
  • End-to-end ownership: architecture, delivery, observability, reliability
  • Stability and performance: startup time, slow path hunting, prod. incident prevention, legacy code migration
  • CI/CD and automation: GitHub Actions, Fastlane, Appium

Roles I’m open to

Senior+
  • Senior Mobile Engineer
  • Staff/Principal Mobile Engineer
  • Mobile Team Lead
  • Founding Mobile Engineer
Production apps

ShipStation Mobile

iOS + Android
Full owner

Founding engineer, built no codebase to App Store in 4 weeks flat

Download on the App Store Get it on Google Play

Stamps.com Mobile

React Native
Team Lead

TypeScript, Fastlane, GitHub Actions

Download on the App Store Get it on Google Play

Eagle Eye Viewer

iOS
Full owner

Reduced video start-time in prod from 5600ms → 72ms

Download on the App Store

SpeakWrite

iOS + Android
Full owner

Added bluetooth and hi-quality recording

Download on the App Store Get it on Google Play
Recent work

ShipStation

Senior Mobile Engineer, Team Lead — 2015 to 2025

@ Scale
  • Early employee (#30) through ~2,500 headcount, shipped at every scale stage
  • Lean delivery: solo mobile engineer 2015–2020, 1 of 2 mobile engineers 2020–2025
  • Led 5-person team with 3 engineers; reported directly to VP of Engineering
  • DevSecOps: added static and dynamic security testing across 6 apps and integrated all into GitHub Actions CI/CD

Mixterioso

CLI
API

Ultra-fast karaoke video generator (~15s)

Mixterious

iOS

Companion to Mixterioso; Coming soon to the App Store

Projects