SEIDO
Workflow Automation & Software Engineering Portfolio
Explore SEIDO workflow automation, system architecture, security and custom software reference implementations.
Engineering evidence
Secure SaaS Starter KitA production-ready authentication and authorization system designed to serve as the secure foundation for enterprise SaaS applications.API Security GatewayA high-performance reverse proxy equipped with an intelligent policy engine and WAF-lite capabilities to protect internal microservices.Security Headers & CSP GeneratorAn automated toolset for generating, testing, and deploying strict Content Security Policies and HTTP security headers.Vulnerability Triage DashboardA centralized dashboard for engineering teams to ingest, score, and prioritize security vulnerabilities using a custom CVSS-like matrix.Internal Admin Dashboard TemplateA highly extensible, production-ready admin panel designed for internal operations, featuring strict RBAC and comprehensive audit trails.Event-Driven Order/Invoice MicroserviceA highly scalable microservice architecture utilizing Domain-Driven Design and the Outbox Pattern to guarantee reliable message delivery.Multi-tenant SaaS ArchitectureA comprehensive architectural implementation demonstrating strict tenant isolation, scalable database design, and tenant-aware routing.Coffee Shop WebsiteModern coffee shop website built with React, TailwindCSS, and modern web technologies. Featuring online ordering, menu showcase, and customer engagement features.Restaurant WebsiteEmber & Oak — a wood-fired restaurant site with menu showcase, slide-over online ordering, and a reservation booking flow. Built with React, Vite, and TailwindCSS.E-commerce StoreFORM — a curated design-objects store with filterable catalog, inventory-aware stock badges, a slide-over shopping bag, and a mock secure checkout. Built with React, Vite, and TailwindCSS.SaaS Landing PageCadence — a high-converting landing page for a workflow-automation SaaS, with an animated product mockup, bento feature grid, scroll-triggered stat counters, and a monthly/annual pricing toggle.Corporate WebsiteMeridian — an editorial corporate site for a strategy & brand consultancy, with services, a four-step approach, case-study results, partner team profiles, testimonial, and a contact flow. Built with React, Vite, and TailwindCSS.Premium Bulgarian Honey StoreRHODOPE — a premium D2C e-commerce store for raw, single-origin Bulgarian mountain honey. Varietal catalog with tasting notes and stock badges, slide-over basket with mock checkout, and provenance storytelling. Built with React, Vite, and TailwindCSS.Analytics DashboardHelios — a product-analytics dashboard with KPI cards and period deltas, an interactive multi-metric chart, a 7/30/90-day range filter that recomputes everything, plus a live-searchable, multi-column-sortable transactions table. Built with React, Recharts, and Tailwind.AI Chat AssistantLumina — a polished AI chat interface with simulated token streaming and a stop control, full markdown rendering, copyable code blocks, an auto-titled conversation sidebar and model picker. Built with React, react-markdown, and Tailwind.Kanban Project BoardFlowboard — a drag-and-drop Kanban board (dnd-kit) with reordering within and between columns, a rotated drag overlay, inline card creation, labels and priorities, all persisted to localStorage. Built with React and Tailwind.Realtime Crypto DashboardSatoshi Terminal — a realtime trading dashboard with a simulated market engine streaming live prices for nine assets: animated chart, sparkline watchlist, depth-bar order book and a trades feed that prints as the price moves. Built with React, Recharts, and Tailwind.Appointment Booking SystemLumé — an online booking flow for a spa/salon: a 4-step wizard (service → date & time → details → confirmation) with a 14-day picker, a realistic time-slot grid with taken/disabled slots, and a live summary. Built with React, Vite, and Tailwind.Invoice & Quote GeneratorQuota — a back-office tool for small businesses: an invoice/quote builder with editable line items, automatic subtotal/tax/total calculation, an invoice⇄quote toggle, and a print-ready preview (real Save-as-PDF). Built with React, Vite, and Tailwind.Real Estate ListingsAbode — a boutique estate-agency site with filterable, sortable property listings (area, type, beds, price), saveable favourites with a live count, and a detail modal with stats and agent contact. Built with React, Vite, and Tailwind.Fitness Studio & Class BookingPULSE — a strength & conditioning studio site with a weekly class schedule you can book from (spots decrement, full classes waitlist), a booked-count tracker, and membership tiers. Built with React, Vite, and Tailwind.Lightweight CRMCoil — a small-team sales CRM: KPI row with a weighted forecast (value × stage probability), a pipeline-by-stage funnel, a searchable/sortable deals table with inline stage changes, and a deal drawer with an activity timeline. Built with React, Vite, and Tailwind.QR Menu & Table OrderingTabl — a mobile-first scan-to-order experience for restaurants: categorised image menu, animated add-to-cart with a slide-up cart sheet, and a live kitchen status (Received → Preparing → Ready). Built with React, Vite, and Tailwind.Job BoardRoster — a curated job board with keyword/location search, type/team/remote filters, a master–detail layout (full-screen sheet on mobile), saveable jobs, and an apply modal with confirmation. Built with React, Vite, and Tailwind.