Denis Shiriaev

AI-powered professional headshot generator serving users across Europe and North America. The platform transforms casual selfies into professional portraits for LinkedIn, CV, and social media in under 30 seconds. Architected a microservices backend with 6 independent services using Node.js/Fastify, with PostgreSQL for persistent storage and RabbitMQ for asynchronous job queuing. Built an ML pipeline proxy via LiteLLM to orchestrate requests across multiple image generation models, with face detection preprocessing for consistent output quality. Implemented real-time progress streaming via Server-Sent Events, eliminating polling overhead. Designed a credit-based payment system with Stripe integration supporting three tiered packages (Starter, Professional, Executive). Deployed on Kubernetes with Helm charts, CI/CD via GitHub Actions, and enterprise-grade secrets management. Monitoring stack includes VictoriaMetrics and Grafana dashboards with structured logging via VictoriaLogs. Supports 10 languages with GDPR-compliant 30-day automatic data retention and end-to-end encryption.

Mobile-first Progressive Web App for saving and organizing YouTube videos, built as a personal project for my wife. The application registers as a Web Share Target on Android, allowing users to share YouTube links directly from the YouTube app's share menu into their personal collection. Architected with React Router 7 for full-stack SSR, Prisma ORM for database access, and PostgreSQL for persistent storage. Implemented drag-and-drop reordering using @dnd-kit with a responsive grid layout optimized for mobile (3 columns) and desktop (7 columns). Integrated deep-linking via YouTube's URI scheme to open videos directly in the native YouTube app, with web fallback for non-Android devices. Deployed on Kubernetes with Helm charts and GitHub Actions CI/CD. Features Google OAuth authentication, dark/light theme matching OS preferences, and a minimalist design philosophy — no algorithms, no recommended feeds, just the content you choose to save.

B2B dropshipping platform engineered for Collective Agency, a top-rated Shopify Expert firm based in Orange County, California. The platform serves as a marketplace connecting Shopify store owners with wholesale suppliers, automating the entire product-to-delivery pipeline. Architected a real-time synchronization engine using Shopify API webhooks and Socket.IO, enabling instant inventory updates across 1000+ connected stores at peak load. Built an event-driven backend with Node.js/Express, MySQL for persistent data, and Redis for caching, session management, and pub/sub messaging between services. Integrated ShipStation and USPS API for fully automated order fulfillment — from label generation to tracking updates — eliminating manual processing overhead. Implemented Stripe-based subscription billing with metered usage tracking for supplier access tiers. Designed an AngularJS admin dashboard with Bootstrap 4 for multi-supplier catalog management, bulk product editing, real-time order status monitoring, and analytics. Deployed with PM2 process manager and Let's Encrypt SSL on a custom domain.

Personal productivity dashboard integrating with Asana's API for weekly task visualization. Built a kanban-style interface with drag-and-drop reordering, allowing users to arrange their weekly priorities with persistent ordering per user. Implemented OAuth authentication via Passport.js for secure Asana account linking. The backend used Node.js/Express with MongoDB for session storage and user preferences, while the frontend featured Jade templates with jQuery for interactive card manipulation. Included user activity analytics and logging to track productivity patterns over time. Built with Pixel Perfect design approach for a polished, responsive interface.

Enterprise-grade web scraping platform for media monitoring and content intelligence. Automated data collection from 100+ international news sources with multi-language support, intelligent pagination handling, and anti-bot bypass techniques.