Damian Marquez
@damianmarquez
Full Stack Developer and AI Engineer building scalable SaaS and LLM-powered products end to end.
What I'm looking for
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.
Education
Degrees, certifications, and relevant coursework
Damian hasn't added their education
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Availability
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Portfolio
github.com/DevDamianMarquezJob categories
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