Backend-first engineering with product vision and performance in mind.
I am Angelo Polgrossi, an engineering student and developer focused on backend architecture, web platforms, and integrated solutions. I work on products that need speed, reliability, and a modern experience for the end user.
Core stack
Laravel · React · Vue · Python · SQL
Focus
Backend, APIs, and cloud platforms
Experience
Web apps, microcontrollers, and internal systems
Backend & Full-Stack Developer
Valencia, Venezuela · UTC-4
Available for new projects and remote collaborations.
I have built web platforms, administrative systems, microcomputer solutions, and internal tools for real business operations.
I am especially comfortable designing databases, APIs, authentication flows, admin panels, and processes where reliability is critical.
Although backend is my strongest area, I can also work with modern frontend stacks to deliver complete end-to-end products.
Architected a hybrid platform merging cloud software with physical hardware for residential management. Integrated a Laravel/Vue web app with local Python-based IoT microcomputers to automate access control, barrier operations, and real-time data synchronization.
System for the administration of clubs or urbanizations at accounting level, access control and other aspects (Currently under development). Personal achievements in the project: Web App developed using Laravel - Blade - PHP, following the MVC architecture, MYSQL database, AWS WEB services, app deployed also in AWS as well as the database and buckets, notification system using Laravel technology as well as sending notifications via SMS using own devices, development of APIs for the communication of devices or modules used in access control. Development of python programs to control the modules, creation of local database synchronization system between the modules, use of database libraries to control them, OpenCV for image processing, TtkBootstrap to create a simple interface for the modules, control of physical pins of the modules (microcomputers) to manage external hardware (sensors, lights, cameras)...
Led the full-stack development of Editfy's main marketplace under a microservices architecture, building a robust RESTful API in PHP/Laravel and scalable client applications with Next.js, React, and TypeScript. Assumed the DevOps role by managing the cloud infrastructure on AWS (EC2, Load Balancers), and integrated critical high-level features including secure payment gateways (Stripe Connect), real-time WebSocket communication (Stream.io), and an interactive assistant powered by Gemini AI, delivering a secure, high-performance platform.
Designed and developed an automated identity verification engine built as a RESTful API (interactively documented with Swagger). The system utilizes OpenCV and Artificial Intelligence models for real-time image processing and facial recognition, seamlessly and securely integrating with physical access control platforms.
Participated as a Technical Analyst in the design and structuring of a comprehensive restaurant management system. I was responsible for requirements gathering, relational database modeling, and software architecture design. My approach ensured the project's technical feasibility by translating operational needs (such as reservations and inventory) into clear development specifications.
Engineered a scalable Progressive Web App (PWA) for advanced time planning and activity tracking, utilizing Next.js 14 (App Router), TypeScript, and Prisma ORM. Designed a highly secure and modernized user experience featuring NextAuth with custom session lifetime logic, real-time password strength heuristics, and global API middleware for automated 401 expiration handling. Built a cohesive, accessible interface using custom Tailwind CSS design system tokens, Zod for schema validation, and Framer Motion for smooth transitions, delivering an installable, offline-capable architecture equipped with custom health-check monitoring.
Independently designed and developed a comprehensive full-stack web application enabling users to create, customize, and manage interactive digital event invitations. Built entirely from scratch using Next.js (App Router), React, and TypeScript, the platform features a robust admin dashboard with real-time desktop and mobile previews, dynamic UI block editing, and secure authentication via NextAuth. Engineered seamless third-party integrations, utilizing AWS S3 for scalable media storage and the Spotify API for playlist synchronization, while efficiently managing guest RSVPs and complex relational data using Prisma ORM.
Node.js and Express backend with authentication, administrative structure, and backend/frontend coordination under Scrum.
ID card generation app for association members using Python, OpenCV, Tkinter, and MySQL.
Keep a downloadable resume always available while the portfolio highlights experience, stack, and featured projects.
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