Selected Case Studies

Production Work Across Web, Mobile, and SaaS.

A curated portfolio of real projects shipped for e-commerce, healthcare, SaaS, and mobile products.

Main Project

Flagship Delivery

Healthcare Web Platform

Flagship Project

Bilingual Healthcare Operations Platform

A production-oriented BG/EN medical system combining a public website, secure patient portal, and role-restricted admin CMS in one architecture.

Key Capabilities

  • Timezone-aware booking lifecycle with real-time slot validation (Europe/Sofia)
  • Temporary reservation windows, automatic expiration release, and patient-side cancellation flows
  • Protected appointment requests with Turnstile + transactional email notifications
  • Google Calendar synchronization and dashboard visibility for upcoming/past/cancelled bookings
  • Localized CMS workflow for Bulgarian and English blog content

Core Stack

Next.js 15React 19TypeScriptTailwind CSSSupabaseResendGoogle Calendar APICloudflare Turnstile
Technical Breakdown

This is a full-stack healthcare platform built for real operational use. The public experience and patient portal are connected to secure, database-backed workflows, while administrative users manage localized content through permissioned tooling.

From an engineering perspective, the project includes locale-aware middleware, structured SEO metadata with JSON-LD, robots/sitemap generation, server actions, API routes, and security-oriented Supabase access patterns.

The result is a complete digital practice system covering discovery, booking, verification, communication, and multilingual publishing in one maintainable Next.js codebase.

Portfolio

Additional Completed Projects

E-commerce Platform

Production

Decorio.bg

A Bulgarian-market e-commerce platform with modular catalog architecture, variant-aware product rendering, and local checkout operations.

Core Stack

Next.js 14React 18TypeScriptTailwind CSSApp RouterSupabaseResendCloudflare Turnstile

Key Capabilities

  • Data-driven product architecture using structured JSON + BigCommerce-compatible service layer
  • Variant-aware product pages with swatches, synchronized images, and transliterated URL option parameters
  • Cookie-based cart persistence, server-action cart mutations, and automatic bundle/quantity discounting
  • Courier-first checkout flow (Econt/Speedy) with office/locker/address modes and API/widget lookups
  • Technical SEO foundation: canonical metadata, JSON-LD, dynamic OG, sitemap/robots automation
Technical Breakdown

Decorio.bg is optimized for catalog-heavy rendering while preserving dynamic behavior for search and checkout. It combines static generation for content pages with live transactional workflows for commerce-critical interactions.

The order-request pipeline is tuned for local logistics and payment requirements, including personalized-product rules, anti-bot validation, persistence, and notification automation.

The platform is designed for long-term maintainability with clean URL rewriting, strong content standards, and operational playbooks for internal product uploads.

Proxy SaaS Platform

Production

Proxy-legion

A full-stack mobile proxy SaaS combining acquisition pages, subscription billing, customer dashboard tooling, and secure gateway infrastructure.

Core Stack

Next.js 15React 19TypeScriptTailwind CSSSupabaseStripeRedis

Key Capabilities

  • Authentication flow with email/password + Google OAuth
  • Subscription lifecycle automation with Stripe webhooks and reconciliation jobs
  • Secure proxy gateway tokens, IP rotation controls, and per-device rate limits
  • HTTP/HTTPS + SOCKS5 gateway support with real-time subscription validation
  • Security hardening: strict headers/CSP, CAPTCHA, verified-email enforcement
Technical Breakdown

The platform joins product marketing and infrastructure operations into one consistent system. Users can onboard, subscribe, manage accounts, and control proxies without switching tools.

Backend services automate device assignment, billing synchronization, anti-abuse controls, and operational consistency, while Redis caching supports low-latency gateway checks.

SEO and growth instrumentation were included from the start through structured data, sitemap/RSS generation, and analytics integrations.

Marketing + Enrollment Platform

Production

Reels Formula

A multilingual conversion-focused platform for an online Reels training product with plan-based enrollment and payment handoff.

Core Stack

Next.js 15 (App Router)React 19TypeScriptTailwind CSSnext-intlVercel Analytics

Key Capabilities

  • Localized RU/EN/UK experiences via locale-prefixed routing and dynamic translation loading
  • Full funnel architecture: hero, program, pricing, case videos, FAQ, author, and checkout navigation
  • External payment handoff integrated with Whop
  • Technical SEO: hreflang alternates, JSON-LD Course schema, dynamic OG/Twitter image generation
  • Event pipeline with dataLayer tracking for CTA, navigation, plans, and locale behavior
Technical Breakdown

The project was built for discoverability and conversion, balancing content depth with fast mobile performance.

Its modular structure allows fast iteration on offer packaging, message hierarchy, and campaign-level landing enhancements.

The result is a scalable enrollment frontend prepared for international audiences and ongoing optimization loops.

iOS Mobile App

Shipped

Carbook Footprint Tracker (iOS)

A mobile-first vehicle logging app focused on personal driving footprint tracking, service records, and usage analytics.

Core Stack

SwiftSwiftUIFirebase AuthCloud FirestoreFirebase Analytics

Key Capabilities

  • Vehicle profile management with mileage, fuel, and maintenance timelines
  • Carbon/footprint-oriented tracking based on trip and fuel behavior
  • Cloud-synced records using Firestore with low-friction data entry
  • Dashboard views for trends, usage patterns, and service history visibility
  • Scalable backend foundation for adding reminders, notifications, and future reporting modules
Technical Breakdown

This project focused on making logging fast enough for daily use while preserving useful long-term data for trend analysis.

Firebase enabled rapid delivery with secure authentication, real-time sync, and analytics instrumentation for product decisions.

The architecture was designed to support future growth into richer ownership and sustainability workflows.

Android Mobile App

Production

Android Native + Controlled Web Fallback App

An Android app combining native Kotlin modules with WebView bootstrap and strict security controls for session-safe hybrid delivery.

Core Stack

KotlinJetpack ComposeMaterial 3Navigation ComposeRetrofitOkHttpMoshi

Key Capabilities

  • Native-first module architecture with controlled WebView fallback paths
  • NextAuth cookie-session compatibility + CSRF header strategy
  • Retrofit networking with interceptor pipeline and typed serialization
  • HTTPS-only transport, host restrictions, blocked admin routes
  • Safe external intent handoff for out-of-scope destinations
Technical Breakdown

The app balances the performance and UX advantages of native Android with pragmatic fallback handling for web-delivered flows.

Authentication and networking were structured to align with existing NextAuth session models while maintaining mobile-grade safeguards.

This made it possible to preserve product velocity without compromising route controls, transport security, or user-session integrity.