Open to opportunities

Damian Marquez

@damianmarquez

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Full Stack Developer and AI Engineer building scalable SaaS and LLM-powered products end to end.

Uruguay

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What I'm looking for

I’m seeking a Full Stack or AI Developer role at a growth-stage startup or product team. I want to build scalable software, collaborate with talented engineers, and keep pushing the boundary of applied AI.

I’m a Full Stack Developer specializing in scalable web applications and AI-powered products. I ship end-to-end work—from architecture and backend APIs to production-ready UIs—with a bias toward execution and clean, maintainable code.

I designed and built GymFlow, a multi-module SaaS for gym operations including member management, attendance tracking, and subscription billing from a single dashboard. I implemented real-time business logic and a scalable, multi-tenant-ready architecture, delivering a fast, mobile-responsive UI optimized for daily staff productivity.

I also built ExamGen AI, an LLM-driven exam generator using GPT-4o to automatically produce questions, answers, explanations, and rubrics from any topic syllabus. With embeddings-based deduplication, one-click PDF export, and a modular FastAPI backend deployed with Docker, I integrate OpenAI and REST APIs into products users rely on.

Experience

Work history, roles, and key accomplishments

Freelance Full Stack

Damian Marquez Freelancer

Built end-to-end SaaS and AI-powered products independently, including GymFlow (multi-module gym management with real-time attendance and subscription billing) and ExamGen AI (GPT-4o exam generator with embeddings-based deduplication). Delivered production-ready UIs and Dockerized backends with clean, maintainable TypeScript/Python code.