Ronald D.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Here’s a tighter Upwork version designed to stay comfortably under the 5,000-character limit while keeping the strongest differentiators. # Senior Flutter & iOS Developer | SwiftUI | Mobile Architecture | Backend I’m a senior mobile software engineer and technical lead specializing in Flutter, Dart, iOS, Swift, SwiftUI, UIKit, and production mobile architecture. My background includes enterprise iOS development for The Home Depot, as well as designing, building, publishing, and operating my own production applications. I help companies build new mobile products, modernize existing apps, rescue troubled codebases, integrate APIs and cloud services, and take applications from concept through production release. Unlike developers who focus only on the mobile UI, I can work across the entire application stack—from Flutter and native iOS through backend APIs, databases, cloud infrastructure, subscriptions, payments, analytics, push notifications, and deployment. ## Flutter & iOS • Flutter / Dart development • Swift, SwiftUI & UIKit • Flutter architecture and modernization • Native iOS integrations for Flutter • Platform channels and custom native functionality • REST API integrations • Firebase • Push notifications • MapKit, Mapbox & Google Maps • App Store & Google Play deployment • Performance optimization and debugging • Legacy application modernization I’m particularly comfortable stepping into an existing application, understanding a complex codebase quickly, identifying architectural problems, and creating a practical path forward. ## Architecture & Technical Leadership I can work as both a hands-on developer and senior technical resource. • Mobile architecture • Codebase audits and architecture reviews • Application rescue projects • Technical debt reduction • Code reviews • Performance optimization • Migration planning • Fractional mobile technical leadership • Mentoring and technical direction ## Backend & Cloud I can also build and operate the infrastructure behind your mobile application. My experience includes: • Swift/Vapor • PostgreSQL, SQLite & Fluent ORM • REST APIs and webhooks • Google Cloud Platform • Cloud SQL, Cloud Storage & Pub/Sub • Load balancing and CDN architecture • Cloudflare Workers, Pages, D1 & R2 • Firebase This allows me to handle projects that would otherwise require separate mobile and backend developers. ## Subscriptions, Payments & Monetization I have hands-on experience building and operating monetized applications, including: • RevenueCat • Apple In-App Purchases • Mobile subscriptions and paywalls • Stripe, PayPal & Dodo Payments • AdMob • Subscription and revenue analytics ## Analytics & Growth Infrastructure I can implement the infrastructure needed to understand what users do after installation: • Firebase Analytics • Firebase Cloud Messaging • Event and funnel tracking • Attribution and conversion tracking • Push notification systems • Subscription conversion analytics ## AI Integration I can integrate AI capabilities into existing or new mobile products, including LLM APIs, AI assistants, structured AI workflows, search, summarization, content processing, and backend orchestration. ## Why Work With Me? I bring the perspective of both an enterprise engineer and a product developer. I’ve worked on large consumer applications where reliability, architecture, maintainability, and engineering standards matter. I’ve also built and operated my own products, so I understand that engineering decisions ultimately need to support business objectives. Whether you need a new Flutter application, advanced native iOS development, help rescuing an existing codebase, backend/cloud development, or an experienced engineer to lead your mobile architecture, I can work from initial architecture through implementation, deployment, and ongoing optimization. Core stack: Flutter, Dart, Swift, SwiftUI, UIKit, iOS, Vapor, PostgreSQL, Firebase, GCP, Cloudflare, RevenueCat, AdMob, MapKit, Mapbox, Google Maps, REST APIs, FFmpeg, Stripe and AI/LLM integrations.