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RayDraw Art

@raydrawart

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Full Stack Developer who built an exam management system with Django, RBAC, and PostgreSQL.

Cuba

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At the University of Computer Sciences, I led end-to-end development of an Exam Management System for faculty proficiency evaluations and awards. I implemented Django role-based access control and tuned PostgreSQL queries, reducing response time by 40%.

I also built Moogle!, a C# and Blazor vector search engine, and developed Aprense, a marketplace with recurring Stripe subscriptions. My work spans backend and frontend development, from information retrieval to listing search and filters.

Experience

Work history, roles, and key accomplishments

Full Stack Developer

University of Computer Sciences

Jan 2024 - Jul 2024 (6 months)

Led end-to-end development of an Exam Management System used by the faculty for proficiency evaluations and awards. Designed and implemented Role-Based Access Control (RBAC) authentication system using Django, ensuring 100% data integrity for academic records.

Django PostgreSQL ORM RBAC CSV Web Development

.NET / Blazor Developer

University of Computer Sciences

Aug 2023 - Dec 2023 (4 months)

Built a vectorial search engine from scratch using C# and Blazor, implementing the classic Vector Space Model for Information Retrieval. Programmed custom tokenization algorithms and linear algebra operations (TF-IDF, cosine similarity) to rank documents by relevance.

Lead Developer

Aprense

Built a full-stack marketplace platform for private class listings using Next.js (frontend and API routes). Implemented authentication system, listing management with search and filters, and complete Stripe integration for recurring subscriptions.

Next.js Stripe TypeScript Authentication API Routes Search Filters