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I take your app from Figma to production — one senior developer, no coordination overhead • Top Rated • React Native & Node.js • Apps in Production I build mobile apps that handle real complexity: offline-first data sync, real-time WebSocket integrations, complex authentication flows, payment systems, and AI-powered features. On the backend I work with Supabase (Postgres, Auth, Edge Functions) and Node.js/Express when a custom API is needed. I also work with MongoDB for document-oriented projects. When the project needs web, I deliver with React, Next.js (App Router), and the same quality bar. Shipped and running: - Social marketplace app: 5-year engagement, real-time chat, bidding system, Google/Apple OAuth, Twilio SMS (React Native + Parse/MongoDB) - EV fleet management: cross-platform mobile + web, API optimization from 5-8s → < 1s, CI/CD from scratch, test coverage 30% → 98% (React Native) - Expense tracker: offline-first SQLite sync, AI receipt scanning (Gemini), Stripe payments, multi-currency settlement engine — live on Play Store and as PWA (React Native + Expo + Node.js) - DEX arbitrage dashboard: real-time WebSocket price feeds, Uniswap/SushiSwap, candlestick charts (React Native + ethers.js) - Client portal SaaS: multi-tenant, role-based access, real-time messaging, file sharing, i18n, dark mode (Next.js + Supabase) Mechatronics engineering background — I think in systems, not just screens. Startup experience at Luna DNA (genomics/healthcare) and Nuvve (EV fleet management). 6+ apps on Play Store. 100% Job Success comes from asking the right questions before writing a single line of code. You handle the vision. I design, build, and ship the system behind it. Message me your project's biggest challenge —I'll tell you how I'd approach it.

I am an Android Mobile Developer with 8+ years of experience building, maintaining, and improving native Android applications. I can help you with: • Android app development using Kotlin, Java, Android Studio, and Jetpack Compose • Bug fixing, performance optimization, and app maintenance • MVVM architecture, Clean Architecture, REST API integration, and local persistence • UI updates, XML to Jetpack Compose migration, and Android Jetpack components • Code review, Git workflows, CI/CD, Firebase, SonarQube, and Play Console support I have worked on enterprise Android applications for companies such as OCC Mundial, Telcel, and AvaFin, collaborating with Product, QA, UX/UI, Backend, and international teams. If you need a reliable Android developer to fix issues, improve your app, implement features, or maintain an existing project, I can help.

I am a Systems Engineer; I have 14 years of experience in the area of ​​software development. I have worked in each area of ​​the development cycle, such as programmer or developer in different languages, database administrator, the logical and physical infrastructure of Linux servers, testing and QA, technical leader of software development teams. I have held the position for six years of project/product manager and software architect using agile methodology such as Scrum/SAFE. Skills Sprint Daily, Backlog, User Story, Agile Methodologies, Delivery Management, Scrum/SAFE, Assessing Outcomes, Assessing Progress, Executing Plans, Managing Meetings, Meeting Deadlines,, Process Improvement, Project Implementation, Project Reporting, Solutions Development, Strategic, Planning, Risk Management, Stakeholder Management Tools JIRA, TRELLO, KANBAN, ORANGE SCRUM, MONDAY, GITHUB, GitLab, BITBUCKET “Pipelines,” POSTMAN, DOCKER, AWS (SQS, S3, RDS, GLUE), REALM, CONFLUENCE, DRAW.IO Some of the skills that I constantly use in different software projects are: Android App Development Javascript Development (Angular, Ionic, Flutter, Nodejs, Vuejs) Php Developer (Laravel, Codeigniter, CakePHP, KumbiaPhp) Database (Mysql, Postgres, MongoDB, Redis) Linux server management

8 years of experience in Web Development and Mobile App ( Android | iOS ) Development. 1 year of experience with AWS EC2 8 years of experience with Oracle DB 11g 12g About Me: I am a solution-oriented developer: Web, Android, and iOS Developer, a lifelong learner, and an adventurous professional with experience in software strategy for both business and government. I find joy in developing to overcome challenges and testing new versions of languages and technological tools that are updated day by day. Front-End Skills & Technologies: ✅ HTML ✅ CSS ✅ Javascript ✅ React.js ✅ Vue.js ✅ jQuery ✅ jqGrid ✅ Bootstrap ✅ TailwindCSS ✅ DaisyUI ✅ SkeletonUI ✅ MaterialUI ✅ Chart JS Back-End Skills & Technologies: ✅ Java ✅ Spring Boot ✅ Hibernate ✅ JSP ✅ Javascript ✅ Node.js ✅ Express.js ✅ bcrypt ✅ JSON Web Token (JWT) ✅ JSON Parsing ✅ API RESTful | CRUD ✅ MVVM & MVC iOS Skills & Technologies: ✅ Xcode ✅ UIKit & SwiftUI ✅ ARKit, CoreML and CoreData ✅ App Design (Wireframe, Mockup & Prototype) ✅ Publish App on App Store Android Skills and Technologies: ✅ Java & Kotlin ✅ Google Firebase ✅ XML ✅ Jetpack Compose ✅ Publish App on Google Play ✅ Retrofit ✅ Picasso ✅ GPS Location ✅ Camera QR Code

I am a senior Android developer who believes in the power of teamwork and is passionate about achieving perfection. I work closely with product and design teams to ensure that features function seamlessly and harmonize with overall app performance. With a strong background in digital platform engineering and mobile app development across sectors such as finance, logistics, and on-demand services, I take a detail-oriented and collaborative approach, excelling in creating high-performance, maintainable, and user-centric applications.