Michel Atucha - Senior Full-Stack Developer · Java · Flutter

Professional Summary

Senior Full-Stack Developer with 11+ years building scalable enterprise applications and SaaS platforms. Founded and scaled TuFacturero, a nationwide electronic invoicing platform serving thousands of daily active users across Ecuador. Currently leading EcuaFirma development at Touwolf, delivering mission-critical digital signature solutions for financial institutions and government entities. Expert in Java/Spring Boot backends, Flutter mobile apps, and React frontends. Seeking remote opportunities worldwide to leverage expertise in fintech, e-government, and high-scale distributed systems.

Technical Skills

Core Stack: Java (Spring Boot, Hibernate, JPA) · Dart (Flutter, BLoC) · JavaScript/TypeScript (React, Node.js) · SQL (PostgreSQL, MySQL) · REST APIs · Microservices

Cloud & DevOps: AWS (EC2, S3, RDS) · Docker · CI/CD · Git · Linux

Languages: Spanish (Native) · English (Professional Working Proficiency)

Soft Skills: Technical Leadership · Solution Architecture · Remote Collaboration · Product Ownership

Work Experience

Senior Full-Stack Developer

Touwolf Technologies S.A. • Quito, Ecuador (Remote)

Aug. 2020 - Present

Lead development of EcuaFirma, Ecuador's digital signature platform serving thousands of daily active users across financial and government sectors
Architected Spring Boot microservices backend with PostgreSQL, handling high-volume cryptographic operations and SRI (tax authority) integrations
Built cross-platform Flutter mobile app enabling secure document signing with biometric authentication and offline capabilities
Implemented PKI infrastructure and certificate management system ensuring compliance with national digital signature regulations
Reduced document processing time by 60% through optimized PDF rendering pipeline and asynchronous job queuing

Founder & Lead Developer

TuFacturero (Self-Founded SaaS) • Ecuador

Apr. 2017 - Present

Founded and scaled nationwide electronic invoicing SaaS platform serving thousands of businesses across Ecuador
Built multi-tenant architecture supporting 5,000+ active businesses processing millions of tax-compliant invoices monthly
Developed real-time SRI (tax authority) integration ensuring 99.9% uptime for mission-critical invoicing operations
Designed automated billing system and subscription management handling recurring payments and usage-based pricing
Achieved profitability within first year through direct sales and strategic partnerships with accounting firms

Full-Stack Developer

Logistiks • Ecuador (Remote)

Apr. 2019 - Present

Developed Flutter-based logistics tracking mobile app with real-time GPS integration and route optimization
Built Spring Boot backend APIs managing fleet operations, delivery scheduling, and driver performance analytics
Implemented offline-first architecture enabling continued operations in areas with poor connectivity

Full-Stack Developer

Telemédico • Ecuador

Jun. 2019 - Mar. 2022

Built telemedicine platform connecting patients with healthcare providers through secure video consultations
Developed Flutter mobile apps (iOS/Android) with integrated payment processing and prescription management
Implemented HIPAA-compliant data handling and encryption for protected health information (PHI)

Full-Stack Engineer

Cuballama • Ecuador

Apr. 2014 - Feb. 2017

First engineering hire building VoIP platform connecting 50,000+ users making international calls to Cuba
Developed iOS app with Objective-C integrating baresip SIP stack for high-quality voice calls
Built Spring/Hibernate backend managing call routing, billing, and real-time balance updates
Implemented PayPal payment integration and automated recharge system processing thousands of daily transactions

Education

Engineering in Computer Science

University of Computer Sciences • Havana, Cuba

2008 - 2014

Open Source Contributions

Salert - Dart Financial Calculations Library

Author & Maintainer • May 2024 - Present

Built high-precision financial calculation library handling discounts, multi-tier taxation, and decimal accuracy for commerce apps
Actively used in production by eQon mobile app for real-time sales calculations
Designed type-safe API with comprehensive test coverage to prevent floating-point errors in monetary operations

Bridje Framework - Modular Java Development Framework

Core Contributor • May 2016 - Sep. 2021

Contributed to dependency injection, IoC container, and ORM modules used across multiple enterprise Java projects
Implemented annotation-based configuration system reducing boilerplate code by 40% compared to XML configs
Designed and developed RESTful web services module with automatic OpenAPI documentation generation

JamboDB - Custom Database Storage Engine

Core Developer • Dec. 2021 - Aug. 2022

Architected low-level storage engine with B-tree indexing and ACID transaction support for experimental NoSQL database
Implemented memory-mapped file I/O and custom serialization protocol optimizing read/write performance

Dependencies Checker - IntelliJ IDEA Plugin

Plugin Developer • Jan. 2017 - Apr. 2017

Developed IntelliJ IDEA plugin scanning Maven/Gradle projects for outdated dependencies with one-click updates
Published to JetBrains Plugin Marketplace, automating dependency management for Java development teams

Jodit WYSIWYG Editor (5.8k+ stars)

Accepted Contributor • Jun. 2018 - Jul. 2018

Contributed complete Spanish localization (280+ strings) merged into official repository, expanding global reach

PayPal Cordova Plugin (1.1k+ stars)

Accepted Contributor • Oct. 2014 - Nov. 2014

Enhanced PayPal SDK by adding invoice number tracking to payment API, improving transaction reconciliation capabilities