Full-Stack Developer · SaaS Architect · AI & Payments Integration
Building production-ready, multi-tenant platforms end to end — from custom framework internals to AI models, payment orchestration, and social automation.
| Skill | Proficiency | Stack / Tools |
|---|---|---|
| Backend Development | 5/5 | PHP 8.3, custom MVC architecture, PSR-4, PDO, Redis |
| Database Design | 5/5 | MySQL 8.0, schema migrations, query optimization |
| AI Integration | 4/5 | OpenRouter, LLM routing, prompt design, SSE streaming |
| Payments | 4/5 | Stripe, PayPal, Adyen, Paymob, Fawaterk, webhook security |
| APIs & Webhooks | 5/5 | REST, signature verification, Meta Graph, TikTok |
| Frontend | 4/5 | Vanilla JavaScript, CSS, RTL bilingual UIs |
| Security | 4/5 | AES-256-CBC, Argon2id, CSRF, role-based access control |
| DevOps | 3/5 | Git, cron automation, shared-hosting & VPS deployment |
| Area | Highlights |
|---|---|
| SaaS Platforms | Multi-tenancy, subscription billing, admin consoles, monitoring, backup automation |
| AI-Powered Customer Support | AI chatbots, website widget, live chat, knowledge bases, custom agents |
| Payment Orchestration | Unified gateway layer, hosted checkout, encrypted credential vaults |
| Social Media Automation | WhatsApp (Meta), Messenger, Instagram & TikTok webhook pipelines |
| SEO & Growth | Blog, sitemaps, landing pages, knowledge hubs, multilingual content |
A multi-tenant platform that unifies AI chatbots, CRM, commerce, and payments:
- AI & Automation — OpenRouter-powered chatbot, website widget, live chat with SSE streaming, knowledge base, custom agents
- Commerce & CRM — orders, appointments, leads, interventions, subscriptions
- Social Integration — WhatsApp (Meta), Messenger, Instagram & TikTok webhooks
- Payments — Stripe, PayPal, Adyen, Paymob, Fawaterk + Cash on Delivery, signature-verified webhooks, encrypted credential vault
- SaaS Admin — businesses, users, subscriptions, AI keys, monitoring, cron, backups
- Design — framework-free PHP MVC core, Argon2id, AES-256-CBC, CSRF, full RTL/EN UI
- GitHub: @jczoz
- Open to: full-time roles, freelance contracts, and product collaborations
Building better customer conversations, one request at a time.