Adi User

Designed and maintained event-driven data pipelines using Kafka for real-time streaming into MongoDB, with RabbitMQ integrated for automated notifications. Architected and developed a multi-PSP payment gateway using NestJS/Fastify microservices, integrating providers via RESTful APIs with webhook signature verification, queue-based retry logic, and event-driven processing across MongoDB and Postgr

Engineered FastAPI Python backend for Telegram domain monitoring, applied Dependency Injection, used Motor/MongoDB for user management and real-time alerts, and implemented blacklist scraping with rotating proxies. Automated content workflows with Python scrapers, built Directus CMS sites, and designed Node.js/Express APIs with Docker using Domain-Driven Design.

Built a web app for tracking land routes and calculating distances using Google Maps APIs for real-time navigation and visualization. Developed a scalable PHP backend to manage multi-step forms and automate 500+ monthly maintenance emails, boosting client communication efficiency by 30%.

Developed responsive websites and applications using HTML, CSS, JavaScript, and PHP. Collaborated with UX/UI designers to implement visually appealing, user-friendly designs, and integrated Next.js, WordPress, GraphQL, and REST APIs to create custom headless WordPress backend, improving site speed by 40% and data retrieval efficiency by 30%.

Bachelor of Science in Civil Engineering from the Polytechnic University of Tirana, completed in September 2019.