mlmesa

Available for new projects

Websites and mobile apps that work for your business.

I design and build fast websites that rank on Google, and apps for Android and iOS. I take your project from idea to launch, as your single point of contact, with no surprises.

Get a quote See experience
Web & mobile developer
Miguel L. Mesa

Services

Tailored solutions built to load fast, rank well and stay easy to maintain.

  • Website development

    Lightning-fast, accessible business sites, landing pages and portfolios, optimized for SEO from day one.

    • Responsive design
    • Technical SEO & Core Web Vitals
    • Multilingual
    • Domain & hosting

  • Mobile app development

    Native and cross-platform apps for Android and iOS, published on Google Play and the App Store.

    • Android (Kotlin, Compose)
    • iOS (Swift, SwiftUI)
    • Cross-platform (KMP)
    • Subscriptions & in-app purchases

  • Process automation

    n8n and AI workflows that remove repetitive work, plus chatbots that serve your customers 24/7 on WhatsApp, Instagram and Messenger.

    • n8n
    • AI chatbots
    • WhatsApp · Instagram · Messenger
    • Integrations & APIs

  • Maintenance & consulting

    Performance and SEO audits, improvements to existing sites and apps, bug fixing and ongoing support.

    • Technical audit
    • Migrations
    • Bug fixing
    • Monthly support

How I work

  1. Discovery

    I learn about your business, your goals and your users.

  2. Proposal

    Fixed quote, clear timeline and a written scope.

  3. Build

    Weekly deliveries so you can see progress and give feedback.

  4. Launch

    Go-live, results tracking and support after delivery.

Experience

My career, in short.

  1. Jul 2025 — present

    Android POS Developer

    Global Payments

    • Maintain and optimize legacy applications for V240 and Move2500 payment terminals, ensuring stability and performance.
    • Modernize the codebase architecture with MVVM and dependency injection for new Android payment terminal projects (e.g., M440).
    • Develop custom, client-specific solutions for Android-based payment terminals, tailoring functionality to diverse business needs.
    • Resolve critical bugs and ensure cross-version compatibility across Android versions on embedded payment hardware.

  2. Jul 2023 — Jul 2024

    Android Developer

    Vlue

    • Maintained the passenger and driver applications built in Java.
    • Spearheaded the migration of both apps from Java to Kotlin, using Jetpack Compose for a modern, responsive UI.
    • Re-architected the apps with MVVM and Clean Architecture in a multi-module setup to improve scalability and testability.
    • Implemented Retrofit within the new Kotlin architecture for REST API integration, significantly improving data communication and maintainability.
    • Integrated Stripe for secure, seamless in-app payments.
    • Built advanced geolocation features and integrated MQTT for efficient, real-time communication between drivers and passengers.

  3. Jan 2023 — Jul 2023

    Android Developer

    Freelance

    • Built MemorizaTec, an app for reviewing Mathematics using the Leitner study method.
    • Kotlin and Android Views, following the MVVM architecture with clean code.
    • Firebase for backend services: Firebase Authentication and Firestore.
    • Students review questions on their phones while teachers track their progress from their own devices.

Technologies

  • Kotlin
  • Java
  • Jetpack Compose
  • Android Views
  • MVVM
  • Clean Architecture
  • Dependency injection
  • Retrofit
  • Firebase
  • Stripe
  • MQTT
  • Android payment terminals
  • Swift
  • SwiftUI
  • Kotlin Multiplatform
  • TypeScript
  • Astro
  • React
  • Node.js
  • HTML & CSS
  • Technical SEO
  • Process automation
  • n8n
  • AI / LLMs
  • Git
  • CI/CD

Languages

  • Spanish — native
  • English — professional

Let’s talk about your project

Tell me what you need and I’ll get back to you within 48 hours with a free, no-obligation proposal.

Email me