Mariusz Duda
From: United States of America
Location: Nashville, US
On Useme since 21 July 2026
About me
Senior Full-Stack/AI Developer with expertise in AI, automation, and modern web technologies. I build scalable, high-performance applications from concept to deployment, helping businesses streamline operations and launch reliable products.
SKILL SET: AI/LLM integration, AI automation, machine learning, React, Next.js, TypeScript, Vue.js, Node.js, Python, FastAPI, PHP, chatbot & bot development, image processing, Shopify, PrestaShop, PostgreSQL, MySQL, MongoDB, AWS, Docker, CI/CD, REST APIs, GraphQL, Git, Linux, and cloud deployment.
I write clean, maintainable code, communicate clearly, and deliver solutions on time. Whether you need a custom web application, AI-powered platform, automation workflow, e-commerce solution, or backend API, I'm committed to building software that is scalable, secure, and easy to maintain.
CV / Résumé
May 2022 - Now
Senior Full-Stack & AI Engineer
Comcast
Architected and led development of AI-powered assistants and LLM-driven automation workflows adopted across multiple internal product teams. Designed scalable full-stack applications with React, Next.js, Node.js, and Python, supporting high-traffic
Feb 2018 - Now
Lead Full-Stack Developer
Skelia
Led a team of full-stack developers delivering custom web applications and automation tools for international clients. Developed AI-assisted chatbot and workflow automation solutions integrated with modern LLM APIs.
May 2014 - Now
Full-Stack Developer
NextBig Technology
Built and maintained scalable web applications using React, Node.js, and Python for a range of client projects. Developed REST APIs and integrated third-party services, payment gateways, and e-commerce platforms (Shopify, PrestaShop).
Portfolio
Serverless AI Chatbot Platform
I designed and built a complete end-to-end serverless AI chatbot platform from scratch using AWS cloud-native services.
DocIntel AI
Built an AI document intelligence platform using OCR, RAG, LLMs and pgvector. Automated document ingestion, semantic search, and question answering with cited sources. Designed and developed the entire system end-to-end.
AI Real-Time Translator
Built a macOS-native real-time audio translation plugin designed for live audio environments, integrated directly into Waves SuperRack and Dante-enabled systems.