Experience

Cross-platform and native mobile engineering across multiple client engagements in entertainment, sports, and industrial sectors. Ongoing work on the Cinemark Theatres mobile app, where I've been the founding co-architect since 2013.

• Founding co-architect of the Cinemark Theatres mobile app, now in its thirteenth year of production. The app carries a 4.9 App Store rating across 820K+ ratings and a 4.6 Google Play rating across 108K+ reviews.
• Key contributor to the migration of the Cinemark app from Xamarin.iOS and Xamarin.Android to Xamarin Forms, 100+ screens, completed in three months, with the app live in production throughout.
• Designed and built a unified Azure DevOps CI/CD pipeline replacing four separate pipelines, implementing automatic build versioning and automated release branch tagging.
• Led the mobile side of an OAuth2 authentication migration using Keycloak and MSAL.NET.
• Designed and developed a sports training app using React Native and TypeScript with offline-capable scoring for coaches in the field.
• Designed and implemented RSA and AES encryption for customer payment data protection on a separate client engagement.
• Built a .NET 7 REST Web API enabling an international industrial equipment company to sell products to preferred partners online.

Joined as the Xamarin expert on the MyBSWHealth app, a patient-facing healthcare platform. Stabilized a struggling codebase, built the team's CI/CD system from scratch, and led the Android team through a complete architectural rewrite using Kotlin and a React Native hybrid approach.

• Reduced Android crash rate from 300+ per day to under 1%, lifting the Google Play rating from 3.5 to 4.5 stars.
• Reduced APK size from 40+ MB to under 24MB by auditing and removing unused resources, optimizing image assets, and correctly configuring release build settings including linker and compression.
• Built CI/CD from the ground up using Visual Studio App Center. Manual release builds were gone; QA could validate features as soon as pull requests merged.
• Led the Android team through a full rewrite from Xamarin.Android to native Kotlin, incorporating React Native for the main dashboard using the JavaScript bridge for native-to-JS interoperability.
• Configured self-hosted macOS Azure DevOps build agents using Mac Minis, solving the lack of hosted macOS support and enabling cloud CI/CD for both iOS and Android.
• Established coding standards and code review procedures using .editorconfig, KLint, and Azure DevOps across a team of 5 on-site and 3 offshore developers.
• Android technical lead responsible for cross-team coordination with QA and UI/UX, with final call on Android-side technical decisions.

Cross-platform mobile consulting across entertainment, healthcare, and retail industries. This is where the Cinemark mobile app started, two developers, MonoDroid and MonoTouch, building from scratch.

• Co-founded the Cinemark Theatres mobile app in 2013, building the iOS platform and shared architecture layers from day one using MonoTouch and MVVMCross.
• Rewrote the Cinemark app from PhoneGap (Cordova) to native Xamarin.iOS and Xamarin.Android. Developer experience and app performance improved substantially.
• Built an Android app for a national health insurance company using Xamarin.Android, enabling customers to view claims and access insurance details.
• Created CI/CD pipelines using Jenkins and TestFlight to enable continuous testing and feedback across development, QA, and product owner teams.

Eight years building engineering test software for infrared sensors and defense systems. Started as a Software Engineer and was promoted to Lead Software Engineer, where I mentored and led a team through a VB6 to C# migration.

• Designed and implemented automated engineering test software for infrared sensors using .NET 1.1, replacing a fully manual test process.
• Promoted to Lead Software Engineer to mentor, train, and lead five developers through a platform modernization from VB6 to C#.
• Migrated multiple legacy VB6 test programs to C#.