Denis Aaron Dzib Gonzalez
Lead Full Stack Engineer
Summary
Lead Full Stack Engineer with a strong foundation in modern architectures like NestJS, Django, and React. Passionate about engineering high-performance systems and streamlining development through AI and automation.
Experience
- Migrated a core backend service from Express (JavaScript) to a TypeScript/NestJS stack utilizing Prisma and PostgreSQL.
- Implemented Hexagonal architecture to improve code maintainability and development velocity.
- Integrated and optimized consumption of external APIs leveraging asynchronous processing to reduce response times.
- Developed foundational modules with Sequelize and PostgreSQL to securely consume and aggregate internal services.
- Developed a comprehensive RESTful API for a hotel management system, built with C#.NET, .NET Core, SQLite, and Entity Framework.
- Designed and built high-performance client portfolios using the Astro Framework, leveraging Tailwind CSS for modern UI/UX.
- Ensured SEO optimization and fast load times through static site generation and component-based design.
- Engineered a full-scale POS (Point of Sale) system with Django, Django REST Framework, and PostgreSQL, including mobile integration.
- Developed an online/offline ticket system in React Native featuring automatic synchronization and zero data loss.
- Automated workflows using AWS Lambda and Hubspot API for efficient CRM management.
- Led the development of a custom drag-and-drop tax handler for international clients using C#.NET and Angular.
- Refactored legacy React Native applications, implementing Figma designs and improving business logic efficiency.
Education
Skills
Technical:
- Backend Frameworks/Languages: Python (Django/FastAPI), Node.js (NestJS/Express), C# (ASP.NET/Core), TypeScript, Hexagonal Architecture
- Frontend Frameworks/Libraries: React / React Native, Astro, Angular, HTML5 / CSS3, Tailwind CSS, JavaScript (ES6+)
- Databases/ORMs: PostgreSQL, Prisma, Sequelize, Entity Framework, SQLite, MongoDB
- DevOps/Tools: Docker / Docker Compose, AWS (S3/Lambda/Dynamo), CI/CD (GitHub Actions), RESTful APIs, Git
Language: Spanish Native, English B1.
Soft Skills: Problem Solver, Adaptability, Teamwork, Fast Learning, Communication, Active Listener, Research.
Projects
A comprehensive Point of Sale system built with Django and PostgreSQL, featuring AWS S3 integration and mobile app endpoints.
A robust RESTful API for hotel operations, developed with C#.NET Core and SQLite, featuring secure authentication and role management.
A React Native application designed for synchronization between offline and online states, ensuring zero data loss during connectivity transitions.