Flutter Developer | Swift Expert | Backend & Cloud Specialist

Victor Manuel Lagunas Franco

๐Ÿ“ Yokohama, Kanagawa, Japan

Mobile Developer with over 7 years of experience, specializing in Flutter and Swift. Expert in building high-quality cross-platform applications, integrating In-App Purchases (IAP), AdMob monetization, and subscription models using RevenueCat.

Victor Manuel Lagunas Franco

Victor Franco

Senior Flutter Developer

7+
Years
50+
Projects
3
Countries

Work Experience

Flutter Developer
AndAI | Tokyo, Japan
Jul 2024 - Present
Developing mobile applications with Flutter, ensuring high performance and user experience. Over the past year I have been deeply involved in designing, developing, and integrating a variety of technology solutions focused on attendance management and education, primarily for corporate and academic environments in Japan.
  • PitTouch 3 device integration - Connected time-clock terminals with Flutter apps and Firebase backend
  • Kanril App - Modular Flutter application for attendance logging and scheduling
  • T-city - Secure in-house communication app with hardened permission system
  • Kanril Web - Administrative platform built with Next.js for real-time monitoring
  • 2dCodeScan - QR code scanning app with offline functionality
Flutter Firebase Supabase Next.js TypeScript PostgreSQL
Full Stack Engineer
TO-ON Kikaku | Tokyo, Japan
Dec 2020 - Jul 2024
Successfully migrated eight 2-D games developed in Unity to Flutter over the course of a year as part of a freelance project for an educational platform. Designed and implemented a complete backend using Hasura, PostgreSQL, and Node.js with TypeScript.
  • Migrated 8 Unity minigames to Flutter using Flame for improved portability
  • Developed backend systems using Node.js, TypeScript, and GraphQL
  • Deployed on Google Cloud with Docker and Kubernetes
  • Created API documentation using Postman and Swagger
  • Implemented unit testing and golden tests in Flutter
Flutter Unity Node.js GraphQL Google Cloud Docker Kubernetes
Flutter Developer
Driglo.net | Japan
Dec 2019 - Nov 2023
Developed mobile applications focusing on health and tourism sectors, implementing complex subscription models and payment integrations for the Japanese market.
  • Developed a video-based stretching app using Flutter, Kotlin, and Swift
  • Created a tourism app for Niigata Prefecture
  • Integrated In-App Purchases (IAP) and RevenueCat for subscription management
  • Implemented Firebase authentication with Google Sign-In and Apple Sign-In
Flutter Kotlin Swift Firebase RevenueCat IAP

Technical Skills

Mobile Development

Flutter Dart Swift Kotlin iOS Android

Backend & Cloud

Node.js TypeScript GraphQL PostgreSQL Google Cloud Docker Kubernetes

Database & Services

Supabase Firebase PostgreSQL Firestore Authentication

Monetization & Analytics

RevenueCat In-App Purchases AdMob Firebase Analytics Subscription Models

AI & Machine Learning

OpenAI API Speech-to-Text Machine Learning AI Integration

Testing & DevOps

Unit Testing Golden Testing GitHub Actions CI/CD Version Control

Featured Projects

๐Ÿ“ฑ

MasterNihongoN5

An iOS app designed to help students master the essential vocabulary for the Japanese Language Proficiency Test (JLPT) N5 level through interactive quizzes and gamified learning.

๐Ÿ“–

Historias en japones espaรฑol

A language learning app for iOS that helps Spanish speakers learn Japanese through engaging bilingual stories, improving reading and comprehension skills.

๐Ÿ“š

Dictionary Spanish Japanese

A practical and fast dictionary app for iOS, designed to help users quickly translate words and phrases between Spanish and Japanese.

โœ๏ธ

La Biblia Espaรฑol

A clean and user-friendly application offering the Holy Bible in Spanish, available both as an iOS app and web version, designed for daily reading and study.

๐ŸŒ

i18nFlutter.me

Personal project focused on Flutter internationalization solutions and best practices for global app development.

๐Ÿ‡ช๐Ÿ‡ธ

Espaรฑol Fรกcil (ใ‚นใƒšใ‚คใƒณ่ชž็ฐกๅ˜)

A language learning website designed for Japanese speakers to learn Spanish easily. Features interactive lessons, vocabulary practice, and cultural insights.

๐ŸŽฅ

Flutter Development Course

A comprehensive course on Udemy that teaches students how to build beautiful, natively compiled applications for mobile using Flutter and modern development practices.

๐Ÿฏ

Japon con Vick

A personal tour guide website for travelers in Japan. The site showcases tour packages, provides information, and allows users to book guided experiences.

๐ŸŒฎ

Somos Nucleo

An entrepreneurial project providing tourism services in Mexico, connecting travelers with authentic local experiences and activities.

๐Ÿข

PitTouch 3 Integration

Connected time-clock terminals with Flutter mobile apps and Firebase backend for attendance management in Japan.

๐ŸŽฎ

Unity to Flutter Migration

Successfully migrated 8 Unity minigames to Flutter using Flame engine for educational platform in Japan.

โœ๏ธ

Architecture & Design Patterns

A technical blog post where I explore and explain key software architecture principles and design patterns for building robust and scalable applications.

Let's Work Together

I'm currently based in Yokohama, Japan and open to exciting opportunities in mobile development, particularly in Flutter and iOS development.

๐Ÿ“ง

Email

victorparatest@gmail.com

๐ŸŒ

Website

francodev.live

๐Ÿ’ผ

LinkedIn

victormanuellagunas

๏ฟฝ

Twitter/X

@vicktorManuel

๐Ÿ“ธ

Instagram

@victormanuellafra

๏ฟฝ๐Ÿš€

Personal Project

i18nflutter.me

Currently working on

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