Daniyal K.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Your backend shouldn't be the reason your business slows down. I help startups and growing businesses build backend systems that actually work payment flows that don't break, APIs that connect your tools, and automations that save your team hours every week. With 7+ years of backend experience, I've helped clients go from "this keeps crashing" to "we just onboarded 500 users without a single issue." Here's what that looks like in practice: 💳 Payment & Billing Problems Solved Struggling with failed payments, complex subscription logic, or connecting your checkout to your backend? I've built and integrated: ✔ Stripe: subscription billing, webhooks, Connect accounts, failed payment recovery ✔ PayPal: checkout flows, recurring billing, IPN handling ✔ SagePay / Opayo: server & form integration, 3DS2 compliance ⚙️ Automation & CRM - Your Tools, Connected Tired of manual data entry between your tools? I build automations that do the work for you: ✔ GoHighLevel (GHL): workflows, sub-accounts, custom API connections ✔ Zapier & Make: multi-step automations, CRM sync, webhook pipelines ✔ End-to-end process automation: from lead capture to invoice, zero manual steps 📡 Social & Ad Platform Integrations Need your app to talk to Facebook or Google? I've done it: ✔ Facebook API: Login, Graph API, Ads API, Pixel integration, Webhooks ✔ Google API: OAuth2, Google Ads, Analytics, Calendar, Drive integrations ✔ Seamless auth flows, token refresh logic, data sync between platforms 🏗️ SaaS & Backend Architecture Building a product from scratch or inheriting a messy codebase? I design systems that are clean, documented, and ready to scale: ✔ SaaS platforms multi-tenant architecture, subscription logic, role-based access ✔ REST API design & third-party integrations ✔ Database architecture MySQL, MongoDB, Elasticsearch ✔ Background jobs, queues, webhooks, and event-driven systems Got a backend problem? Broken payments, disconnected tools, or a system that won't scale - I fix it. Let's talk