Software Developer with over 20 years of experience in backend development, specializing in Ruby on Rails, Java, Spring Boot, and system architecture design. I have led the development of high-performance systems, complex integrations, and microservices-based architectures in critical environments including government systems, healthcare platforms, SaaS applications, and ERPs. I am passionate about solving complex problems, optimizing legacy systems, and leading technical teams to deliver scalable, maintainable solutions.

🎯 Current Focus

I’m currently focused on:

  • AI-aided development and integrating AI tools into development workflows
  • MCP (Model Context Protocol) development for enhanced AI integrations
  • N8N workflow automation and building sophisticated integration pipelines
  • Elixir/Phoenix ecosystem advancement and functional programming patterns
  • Java/Spring Boot ecosystem modernization and best practices
  • Ruby/Rails ecosystem and modern development patterns
  • Team leadership and mentoring the next generation of developers
  • System architecture design for scalable, maintainable solutions

🎓 Education

  • Master in Software Development - University of Informatics Sciences, Cuba (2006-2010)
  • Bachelor in Computer Science - University of Havana, Cuba (1999-2004)

💼 Professional Experience

KYNSOFT - Software Developer (Java/Backend)

September 2024 - Present | Ecuador | Remote

  • Leading the engineering team, defining backend architectural standards
  • Designing and implementing Java solutions and scalable microservices
  • Developing RESTful APIs aligned with business objectives
  • Relational database modeling and migration
  • Implementing ETL processes and performance improvements

DOMINION GLOBAL - Senior Ruby on Rails Developer

August 2022 - July 2024 | Remote

  • Developed and maintained Ruby on Rails systems for global clients
  • Created external integrations and robust ETL pipelines
  • Refactored legacy systems to improve performance and scalability
  • Worked with distributed teams across multiple time zones

ADMIOS - Senior Ruby on Rails Developer

August 2019 - July 2022 | Remote

  • Developed Ruby on Rails features and internal tools using Slack SDK
  • Improved team productivity and reduced inefficiencies by 20%
  • Built automation tools that streamlined development workflows
  • Mentored junior developers and conducted code reviews

MINISTERIO DEL INTERIOR (Ecuador) - IT Analyst / Backend Java Developer

April 2015 - March 2019 | Ecuador

  • Architected SIMIEC, the national immigration control system in Java
  • Integrated with specialized hardware (passport scanners, fingerprint readers)
  • Implemented internal Git repositories and generated reports/dashboards
  • Used analysis tools like Jasper Reports, R, and Excel for data insights
  • Managed critical government infrastructure with 99.9% uptime

AEC INTER S.A. - Software Developer (Java)

January 2015 - December 2015 | Ecuador

  • Architected LOTAIP system for government transparency
  • Developed electronic billing system for Correos del Ecuador
  • Implemented backend integrations with ERP systems
  • Worked with regulatory compliance requirements

GMIXON - Ruby on Rails Developer (Freelance)

April 2013 - March 2015

  • Developed and maintained the company’s project management system
  • Worked remotely, delivering in agile environments
  • Collaborated with distributed teams across different time zones

TRANSTUR VARADERO - Ruby on Rails Engineer

March 2011 - February 2013 | Cuba

  • Developed custom ERP (SITRAN) for tourism transportation
  • Complete project built with Ruby on Rails 2.2 and PostgreSQL
  • Handled complex business logic for fleet management and booking systems

PEOPLEWALKING - Java Developer (Freelance)

2010 - 2012

  • Provided support and implemented new features in Openbravo ERP
  • Participated in complete backend Java development lifecycle
  • Worked with enterprise-level business applications

UNIVERSIDAD DE LAS CIENCIAS INFORMÁTICAS - Developer / Assistant Professor

September 2004 - August 2010 | Cuba

  • Developed backend modules for alas-HIS hospital system
  • Implemented HL7 integrations in Java and Linux environments
  • Conducted programming courses and supervised institutional projects
  • Balanced software development with academic responsibilities

🛠️ Technical Expertise

Programming Languages & Frameworks

  • Ruby on Rails: 15+ years, full-stack development, HOTWIRE (Turbo, StimulusJS)
  • Java: Spring Boot, Jakarta EE, enterprise applications, microservices
  • JavaScript: React, StimulusJS, BackboneJS, modern ES6+
  • SQL: PostgreSQL, MySQL, Oracle - complex queries and optimization

Backend & Architecture

  • RESTful APIs: Design, implementation, and documentation
  • Microservices: Architecture design and implementation
  • System Integration: Hardware integration, third-party APIs
  • Legacy System Modernization: Performance optimization and refactoring

Data Engineering & Analytics

  • ETL Processes: Apache Hop, custom data pipelines
  • Reporting: Jasper Reports, Google Looker Studio
  • Data Analysis: R, Excel, LibreOffice
  • Database Optimization: Performance tuning, query optimization

DevOps & Cloud

  • Cloud Platforms: AWS (S3, EC2, IAM, RDS), Elastic Beanstalk
  • Containerization: Docker, container orchestration
  • CI/CD: GitHub Actions, automated testing and deployment
  • Version Control: Git, GitHub, GitLab

Specialized Domains

  • Government Systems: Immigration control, transparency platforms
  • Healthcare: HL7 integrations, hospital management systems
  • ERP Systems: Custom development, Openbravo customization
  • SaaS Platforms: Scalable multi-tenant applications
  • Hardware Integration: Specialized devices, biometric systems

Project Management & Leadership

  • Agile Methodologies: Scrum, Kanban, sprint planning
  • Team Leadership: Mentoring, code reviews, architectural decisions
  • Tools: Jira, Confluence, Slack SDK development
  • Remote Work: 8+ years of remote collaboration experience

🏆 Key Achievements

  • 20% productivity improvement achieved at ADMIOS through automation tools
  • SIMIEC System: Architected national immigration control system serving millions of users
  • LOTAIP Platform: Built government transparency system ensuring regulatory compliance
  • SITRAN ERP: Developed complete custom ERP solution for tourism industry
  • alas-HIS Integration: Implemented critical HL7 healthcare integrations
  • Academic Impact: Taught programming and supervised institutional projects

📜 Professional Certifications

  • EF SET Certificate - Professional English
  • Triplebyte Certified Generalist Software Engineer

🌍 Languages

  • Spanish (Native)
  • English (Professional working proficiency)
  • French (Basic conversational)
  • Italian (Basic conversational)

🚀 Professional Philosophy

With over two decades in software development, I believe in:

  • Quality over quantity: Building maintainable, well-tested solutions
  • Continuous learning: Staying current with evolving technologies
  • Team collaboration: Knowledge sharing and mentoring
  • Business alignment: Understanding and solving real business problems
  • Technical excellence: Following best practices and clean code principles

📞 Let’s Connect!

I’m always interested in discussing challenging projects, sharing knowledge about software architecture, or exploring opportunities to contribute to meaningful software solutions. Feel free to reach out for technical discussions, collaboration opportunities, or mentoring conversations!