Selected work

Work

A few pieces from myColorado. The common thread is mobile work with real rollout constraints: app stores, vendors, QA, support, and people using the app while the next version is already underway.

Mobile driver's license and verifiable credentials
2024–present

Led the mobile implementation for Phase 1 of Colorado's mobile driver's license work: issuance and presentation of an ISO/IEC 18013-5 mDL, plus a reusable verifiable-credential path. The app integrates PingOne IAM, ID Dataweb, FaceTec, and SpruceKit, including recovery around redirects, proofing, and credential state. I also contributed to the law-enforcement Portal app used to accept credentials at traffic stops. Phase 2 is now in production.
- ISO/IEC 18013-5
- OpenID4VC
- PingOne
- FaceTec
- SpruceKit
- ID Dataweb
Crash-free user rate from 98% to 99.99%
2022–2024

Moved crash work out of end-of-sprint guesswork and into a release gate the team uses during rollout. At each traffic step, Crashlytics answers the same questions: is the rate holding, did this build create a top issue, who owns the regression, and do we widen or hold? The result was crash-free users rising from 98% to 99.99%, plus shared evidence for support when login or session issues appear.
- Firebase Crashlytics
- Release gating
- Sprint review
Kotlin Multiplatform shared core
2025–present

Started the shared-core track at the point where duplication was becoming more expensive than coordination. Phase 1 packages business logic for both native apps: XCFramework via Azure Blob Storage and Swift Package Manager, AAR via Azure Artifacts and Maven, with CI split between Linux and macOS. Local development still stays practical through Xcode drag-in overrides and Gradle composite builds.
- Kotlin Multiplatform
- XCFramework
- Azure Pipelines
- Swift Package Manager
- Maven
iOS network-surface catalog
2025

Mapped the iOS network surface so the team could see the app it had in production. The catalog covers about 95 endpoints, request shapes, Codable response models, and a reverse index from call site to endpoint. It exposed duplicate authorize calls, token refresh outside the shared helper, parallel insurance-upload routes, and dead legacy functions.
- iOS
- API documentation
- Codable
- Reverse index
UIKit → SwiftUI and XML → Jetpack Compose, in production
2022–present

Helped set a migration rule the team could keep: new UI uses SwiftUI or Compose by default, older screens move when nearby feature work makes the cost reasonable, and production issues take priority when a sprint is tight. UIKit, Android XML, SwiftUI, and Compose can overlap if the boundaries stay clear.
- SwiftUI
- Jetpack Compose
- UIKit
- Android XML
Mobile CI/CD and developer tooling
2020–present

Built and maintained mobile build, release, deployment, and packaging pipelines across Azure DevOps, fastlane, Swift Package Manager, Maven, and app-store workflows. The work includes scripts, release gates, and handoff points for QA so releases do not depend on one person remembering every step.
- Azure DevOps
- CI/CD
- fastlane
- Developer tooling
- QA workflows