KARAA
KAMARAN

Centralized platform consolidating digital cards into one ecosystem — distribution to sellers, POS systems, and end users via API. Integrates with smart cards and e-wallets. Backend REST API powering both mobile and web clients across the entire Cardhouzz ecosystem.

Middleware layer sitting between card processors and core banking — handling authorization routing, clearing, and settlement flows. Built ledger sync mechanisms ensuring consistency between system state and external processors. Plus AI-powered KYC for compliant onboarding.

A production-style fintech backend — wallet management, money transfers, and an immutable double-entry ledger. Split into independently-deployable Spring Boot microservices (database-per-service) with a transfer saga over Kafka using the outbox pattern. Exercises the genuinely hard parts: correctness under concurrency, idempotency, atomic money movement, and an auditable append-only ledger. Still in progress — built up phase by phase.

Merchants send a link. Customer pays. Visa, Mastercard, international — via SMS, WhatsApp, email. No API integration needed on the merchant side.

Event management with role-based access, ticketing APIs, advanced search. Built to handle scale from day one — caching, query optimization, the works.

Full-text Elasticsearch search with filtering. Product catalog, order tracking, high-volume user interactions without performance degradation.

Real-time power and generator data across industrial sites. Overlap detection logic, live aggregation — environments that can't afford mistakes.

Corporate website for a 17-year-old construction company in Erbil — building, renovation, architecture, and electrical services. Custom CMS, multilingual (English, Kurdish, Arabic), SEO-optimized, fully mobile responsive.

Visual portfolio builder for developers — drag-and-drop section management, live preview, and one-click publishing. GitHub integration auto-imports repos. Your entire portfolio lives in one JSON object — export as a self-contained HTML+CSS file anytime.

QR-based digital business profile platform. Each business gets a QR code that opens a mobile-first public page — info, click-to-call, Google Maps, social links, and a discount gallery. Trilingual (EN / AR / KU) with full RTL, JWT auth with refresh-token rotation, and an S3-ready storage layer. Managed end-to-end from an admin dashboard.