Manuel Ernesto ⚡️
Services
End-to-end product delivery — from architecture to App Store & Play Console release. Here's how I can help.
Cross-platform apps with Flutter

Cross-platform apps with Flutter
Flutter

iOS, Android and Web from a single Flutter codebase. Clean Architecture with BLoC / Riverpod, multi-flavor builds and production-grade state management. 7+ years and multiple shipped apps in healthcare, e-commerce and social.
Cross-platform apps with Kotlin Multiplatform

Cross-platform apps with Kotlin Multiplatform
KMP

Android + iOS from shared Kotlin code with Compose Multiplatform UI. Shared KMP modules eliminate API contract drift with the backend. MVI architecture with Koin, Coroutines and Flow.
Backend with NestJS / Node.js

Backend with NestJS / Node.js
NestJS

Scalable REST and WebSocket APIs in TypeScript with NestJS, backed by MongoDB or PostgreSQL and deployed on AWS (AppRunner, S3, CloudFront, SQS/SNS). GDPR-aware data handling for regulated domains.
Backend with Ktor / Kotlin

Backend with Ktor / Kotlin
Ktor

High-performance Kotlin backends with Ktor, sharing models with KMP clients. Real-time WebSockets, Koin DI and clean, typed APIs — ideal when frontend and backend speak the same language.
Real-time, video & payments integration

Real-time, video & payments integration

Live 1:1 video with Agora RTC, real-time chat with Socket.io, FCM push notifications, and payments with Stripe Connect, Stripe Identity and SUMSUB (KYC) — plus multi-carrier shipping and EU/US tax compliance.
CI/CD & App Store releases

CI/CD & App Store releases

Automated build and release pipelines with Codemagic, Fastlane and GitHub Actions, including multi-flavor builds and end-to-end delivery to App Store Connect and Google Play Console.
Workflow Automation with n8n & AI

Workflow Automation with n8n & AI
n8n

End-to-end automation pipelines connecting your business tools — Drive, Sheets, Calendar, CRMs — with AI-powered data extraction via OpenAI. From PDF intake to structured reports with zero manual work. Real estate lead pipelines, AI document processing (GPT vision OCR), due-diligence report generation, and webhook-triggered multi-system sync.