DAVID SILVERLIGHT

Professional Summary

Senior Cross-Platform Application Developer with 12+ years of experience and 30+ shipped applications for clients including Microsoft, UPS, T-Mobile, and Midmark, building and modernizing large-scale enterprise applications spanning architecture, performance, UI, and complex backend integration. Integrates AI tooling, primarily Claude Code and GitHub Copilot, into a continuously refined development workflow that increases both velocity and code quality. Years of human-driven software development predating those tools is what makes the workflow effective, enabling AI-generated code to be evaluated critically: accepting sound solutions while identifying suggestions that work but introduce security vulnerabilities, subtle logic errors, or maintainability risks that would otherwise go unnoticed.

Professional Highlights

Enterprise Cross-Platform Delivery. Owns architecture, UI and performance on mission-critical applications across .NET MAUI, React and Angular.

Remote Delivery at Scale. A proven track record of delivering solutions in distributed teams via Teams, Slack, Azure DevOps and Git, from a 300-screen fintech platform to a badged Microsoft engagement.

Measurable Performance Gains. Recently demonstrated by gMobile vNext, RamTech's Esri GIS field app: ~30% fewer clicks and 20-second load stalls eliminated. SearchMed: 35% faster UX display and ~50% faster initial load.

Technical Skills

Professional Experience

Senior .NET MAUI Engineer

RamTech, Remote  |  2025 – Present

Delivered UX improvements, performance optimizations, and .NET MAUI-specific heavy-lifting work on gMobile, an Esri/ArcGIS-based field app supporting data collection and asset inspection: damage assessment, tracking and traceability, leak survey, and gas-insight inspections. Re-architected the app's workflows to design and build the vNext release, replacing multi-screen navigation with a single centralized mapping surface and unified toolbox.

• Impact: ~30% fewer clicks per feature surfaced on the map, and eliminated data-loading initializations that averaged ~20 seconds each, turning a previously sluggish workflow into a crisp, responsive experience for the high-frequency task of adding assets to the map
• Tech Stack: .NET MAUI, Prism, Esri ArcGIS Maps SDK, Telerik UI for .NET MAUI, MAUI Calendar, Newtonsoft.Json, SQLite
• App Case Study: https://DavidSilverlight.com/RamTech-gMobile.html

React Developer (Contract) | Kudurru Stone Web Client

Kudurru Stone, Remote  |  2026

Delivered UI changes and defect resolution across the Kudurru Stone Web Client, the React front end of a land-surveying project management platform. Work centered on the Client Portal: firm-branded intake forms assembled from configurable field types, each submission returning a tracking reference and converting into a project without re-entry.

• Built dynamic form rendering from field-type definitions (text, email, phone, dropdown, checkbox, long description) with required/optional validation and a live preview before publish
• Refined layout and resolved defects across portal screens, including passwordless magic-link sign-in and per-client file exchange folders
• Impact: Turned phone, email and voicemail intake into structured, reference-tracked requests that convert straight into scheduled projects, removing the re-entry step between client submission and job setup
• Tech Stack: React, TypeScript, React Hook Form with schema validation, TanStack Query, React Router, Vite, Jest and React Testing Library, REST against ASP.NET Core

.NET MAUI | Next.js Engineer (Contract) | ABA Therapy Clinical Platform

ATrack Solutions, Remote  |  2026

Worked on ATrack's web-based ABA clinical workflow application alongside their .NET MAUI mobile platform. Provided development support on ATrack Mobile, a .NET MAUI application (built on Prism) delivering an all-in-one data-collection and clinical-practice platform for Applied Behavior Analysis (ABA) therapy and autism service providers. Cleared a substantial defect backlog, delivered requested features, and resolved issues stemming from an improper Xamarin.Forms-to-.NET MAUI migration. Developed a system for supporting their applications and triaging the exceptions users encounter, incorporating a combination of Sentry and UXCam, forming an open-ended, configurable layer that can be extended with new tools or selectively disabled as needs evolve.

• Impact: Resolved all known .NET MAUI defects; the product owner credited the work with finally giving him confidence in the app's stability
• Tech Stack: .NET MAUI, Next.js, GraphQL, REST, Jest, Prism.Maui, CommunityToolkit.Maui, DevExpress, Sentry.Maui, Sharpnado, Newtonsoft.Json, SQLite, UXCamDotNet
• App Case Study: https://DavidSilverlight.com/ATrack-Mobile.html

React Native Developer | Time & Expenses Mobile App

Sherlock Talent, Remote  |  2024 – 2025

Built and maintained a cross-platform React Native application (iOS/Android) in TypeScript from a single codebase, enabling employees to log time and expenses, punch in and out, submit time entries and timesheets, view work and client details, and manage scheduling from mobile.

• Integrated GraphQL APIs for efficient, precise data fetching, and collaborated with .NET (ASP.NET Core / Web API) backend developers to deliver secure, scalable services
• Managed application state with Redux/Context API and consumed both GraphQL and REST endpoints following a maintainable, componentized mobile architecture
• Optimized performance and responsiveness via lazy loading
• Wrote unit and integration tests with Jest to ensure reliability and reduce regressions
• Tech Stack: React Native, TypeScript, GraphQL, REST, .NET / ASP.NET Core, Redux/Context API, Jest
• App Case Study: https://DavidSilverlight.com/Sherlock-Talent-Time-and-Expenses.html

.NET MAUI Developer (Contract) | Medical Provider Search

SearchMed, Remote  |  2025

Developed a new version of SearchMed, a .NET MAUI application providing a directory designed to help users search across verified medical providers and book appointments.

• Impact: Reduced UX display time by 35% and cut initial load time by ~50%
• Tech Stack: .NET MAUI, MVVM, Firebase, RESTful services
• App Case Study: https://DavidSilverlight.com/SearchMed.html

.NET MAUI Engineer (Contract) | Mobile Delivery Feasibility Spike

UPS, Remote  |  2023 – 2024

Conducted the .NET MAUI feasibility spike for UPS Mobile Delivery, the application used by UPS drivers on the DIAD 6 handheld device to scan delivered packages. Validated that the migration was viable end to end before UPS committed to the broader effort.

• Verified Trimble Maps and barcode scanning running correctly under .NET MAUI
• Rebuilt UPS's in-house Xamarin.Forms component library in .NET MAUI with identical UX
• Removed Prism in response to licensing changes, replacing it with a lighter MVVM approach
• Impact: Proved viability with driver login and the itinerary dashboard running in the MAUI build
• Tech Stack: .NET MAUI, Trimble Maps, CommunityToolkit.Mvvm, SQLite, Xamarin.Forms
• App Case Study: https://DavidSilverlight.com/UPS-Mobile-Delivery.html

Lead Angular Developer | Stratusphere API Builder

Liquidware Labs, Remote  |  2020 – 2022

Developed the API Builder, a graphical query builder for Stratusphere's REST API that replaced hand-written calls and database-schema knowledge, plus an "Inspector" tool for scoping queries by data type (users, machines, applications, network) with refined column and filter controls.

Architecture Highlights

• Designed and implemented a modular Angular 9 SPA with lazy components, and scroll-position restoration
• Built a centralized NgRx store with separate builder, users, and spotChecks slices; authored 20+ reducer handlers and async effects for session verification, inspector metadata, and basis-name fetching
• Architected a three-layer HTTP stack: DataService (raw HTTP with retry logic and localStorage caching), ApiService (business logic, RxJS Subject-based pub/sub), and BuilderService (CRUD endpoints), reducing component coupling and enabling offline-first caching of inspector metadata
• Established dynamic UI theming (dark/light mode, multiple color schemes) via DOM stylesheet replacement and PrimeNG ::ng-deep overrides
• Built an i18n pipeline via TranslationService with JSON locale files and a dedicated Languages module supporting runtime locale switching
• Delivered CSV/JSON export, clipboard copy, query history (localStorage), and saveable/shareable favorite queries via URL-encoded query parameters

Tech Stack: Angular 9, NgRx 9, RxJS 6, PrimeNG, TypeScript 3.8, Chart.js, AmCharts 4, XLSX, Jasmine/Karma, HTML5 localStorage/Cookies

App Case Study: https://DavidSilverlight.com/Stratusphere-API-Builder.html

Xamarin Developer (Contract) | Marcel AI Platform

Microsoft, Redmond, WA  |  2019

Badged Microsoft contractor, based on the Microsoft campus, serving as a Xamarin developer on the team that built the initial release of Marcel, an AI-powered platform connecting 100,000 employees and reinventing the way they work by helping people find collaborators, discover inspiring work, schedule meetings, improve work quality, and follow up on committed deliverables.

• Key features: collaborator discovery, work and inspiration feed, meeting scheduling, quality and deliverable tracking
• Impact: Shipped the initial release of an enterprise AI platform that connects 100,000 employees, a launch covered by Fast Company
• Tech Stack: Xamarin.Forms, Microsoft AI, Prism, RESTful services; built on Microsoft AI and delivered in partnership with Publicis.Sapient
• App Case Study: https://DavidSilverlight.com/Marcel.html

Xamarin.Forms Developer | T-Mobile Money

Yocum Technology Group, Remote  |  Sep 2017 – Oct 2019

Contributed to T-Mobile Money, a customer-facing Banking-as-a-Service platform for a major national carrier, spanning 300+ screens and delivering a comprehensive suite of online financial services on a robust Xamarin architecture.

• Developed key features including account transfers, perks, CUI notifications, and ATM/cash-deposit locators
• Integrated card activation, fund management, and account customization functionality
• Ensured best practices in UI/UX and development patterns across the project
• Impact: Delivered core money-movement and card-management features across a 300+ screen consumer banking platform for a major national carrier
• Tech Stack: Xamarin.Forms, MVVMCross, Google Maps SDK, REST APIs, Xamarin.Essentials
• App Case Study: https://DavidSilverlight.com/T-Mobile-Money.html

Xamarin.Forms Developer (Contract) | Field Installation Tool

Nalco, Remote  |  2015 – 2016

Built a field tool for installation specialists fitting tank locks, generating unique lock combinations and documenting each install through a backend service.

• Impact: Delivered on a condensed timeline to support the installation of 28,000 tanks on schedule
• Tech Stack: Xamarin.Forms, MVVM, RESTful services
• App Case Study: https://DavidSilverlight.com/Nalco-Lock-App.html

Previous Work

• Trail-Camera Companion App, Moultrie Mobile (2022 – 2023): remote images, property monitoring, navigation
• DECO IoT, Midmark (2022): medical smart-device registration, connection and setup via REST API
• Gia Member Health App, MVP Health Care (2021 – 2022): virtual care, provider search, ID cards, claims
• Field Service App, Real Green Systems (2021): offline-first scheduling, route navigation, crew timesheets
• My BluePrint, Blue Cross Blue Shield (2019 – 2020): performance, accessibility and App Store assessment
• B4UFly / JBSA Work Order Tracker, Jadin Tech (2016 – 2017): drone awareness and work-order tracking

Developer Community

Speaking & Leadership

• Led the South Florida .NET MAUI / Mobile Developers Group (formerly the Xamarin group) for 5 years, hosting monthly meetings at the Microsoft office in Ft. Lauderdale
• Presented on Xamarin.Forms and .NET MAUI at CodeCamp 2024 and South Florida DevCon 2022

Mentoring

• Safe4Dogs (.NET MAUI): an open-source app that determines whether foods are safe for dogs, built to double as a teaching codebase for mentoring developers in core .NET MAUI development. Demonstrates MVVM, XAML, data binding, effects, behaviors, dependency injection, SQLite, handlers, Shell navigation, value converters, and localization
• Impact: helped numerous developers get up to speed on the core concepts underlying .NET MAUI application development

Community Projects

• Eventarin: a tool for CodeCamp attendees to find speakers and schedule events, built to teach cross-platform development to the user group
• NonProfitWays: connects software developers with nonprofits to build free websites, giving developers real-world experience and a portfolio
• Community Credit: a rewards site where developers earn points for community contributions such as forum participation and conference speaking

Education

Florida International University, Miami, FL  |  B.S., Computer Science

Broward Community College, Miami, FL  |  Associate of Arts