Jonathan photo Open to Senior & Remote Opportunities

Hi, I'm Jonathan

Senior Mobile Engineer specialized in scalable architecture, performance optimization, and cross-platform development. With 7+ years of professional experience, I design and ship production-grade mobile applications using Flutter, SwiftUI, and Jetpack Compose. Based in Guatemala, collaborating with international teams in remote environments. I integrate AI tools like ChatGPT and Claude into my development workflow to accelerate delivery, improve automated testing, enhance documentation, and maintain high code quality standards.

Experience

  1. Senior Mobile Engineer at iDoctus

    Leading mobile engineering initiatives, refactoring critical Flutter modules to improve scalability and maintainability. Introduced AI-assisted development workflows that reduced QA cycles and increased delivery speed while preserving code quality.

  2. Senior Mobile Engineer at Popoyán

    Architected and led the development of Agriconecta, a scalable Flutter platform with strong offline-first capabilities. Built an internal operations dashboard and mentored developers to raise engineering standards and improve long-term maintainability.

  3. Mobile Engineer at Tribal Worldwide

    Delivered production mobile applications using Kotlin, Swift, and Flutter. Led development of a Jetpack Compose coffee delivery app, collaborating closely with design and backend teams to ensure cohesive product execution.

  4. Android Engineer at Digital Geko

    Modernized banking applications by migrating legacy Java codebases to Kotlin, improving security, maintainability, and performance. Integrated Huawei Mobile Services to expand device compatibility.

  5. Full Stack Developer at Inédito

    Developed 95% of a Flutter mobile application and its Firebase backend architecture. Optimized MongoDB queries for faster search performance and scalable growth.

Projects

Stackoverflow

Active Stack Overflow contributor with 700+ reputation points, supporting developers in Flutter, Android, and Swift ecosystems.

profile for Jonathan Ixcayau on Stack Exchange, a network of free, community-driven Q&A sites
  • Stackoverflow

Chuck Norris Jokes

Cross-platform Flutter application deployed on Android, iOS, Web, and macOS. Implemented responsive architecture, AdMob monetization, and version migrations to ensure long-term stability and performance.

  • Flutter

Memorama

SwiftUI memory game built with clean architecture principles. Features multi-level difficulty, persistent scoring, and smooth state-driven animations.

  • Swift UI

Poke Dex

Jetpack Compose Pokédex application integrated with Firebase Auth. Implemented social login, real-time data handling, and advanced search filtering.

  • Jetpack Compose

Portfolio

High-performance portfolio built with Astro and deployed on Firebase Hosting. Optimized for speed, accessibility, and SEO best practices.

  • Astro

Technologies

App Stores

Multiplatform

Mobile

CI/CD

Databases

Google Workspace

Artificial Intelligence

Git

Other Services

Web

Hobbies

Specialty Coffee

I explore specialty coffee through brewing and tasting. Precision, consistency, and refinement in coffee mirror my approach to software engineering.

Cycling

Cycling keeps me disciplined and focused. The consistency and endurance it requires reflect how I approach long-term engineering challenges.