Muhammad U.

🚀 I build production-ready SaaS platforms, custom marketplaces, automation systems and cloud-deployed web applications — with a focus on booking, payment, subscription, CRM, admin dashboard and operational workflows. With 10+ years of full-stack software engineering experience, I help startups and businesses build new products, extend existing platforms, complete complex MVPs and solve production-critical issues using Ruby on Rails, Node.js, React/Next.js, Stripe, GoHighLevel and DevOps across Alibaba Cloud, AWS and Google Cloud Platform (GCP). WHAT I CAN HELP YOU WITH • SaaS platforms, startup MVPs and custom web applications • Marketplace, booking, scheduling and multi-role user workflows • Stripe payments, subscriptions, refunds, platform fees and credit systems • CRM systems, admin dashboards, messaging and third-party API integrations • GoHighLevel / LeadConnector Voice AI and lead automation workflows • Ruby on Rails, Node.js, React, Next.js and Angular application development • Replit and Lovable MVP debugging, completion and production readiness • DevOps, Docker, Kubernetes, CI/CD and cloud deployment on Alibaba Cloud, AWS and Google Cloud Platform (GCP) CUSTOM SAAS & MARKETPLACE DEVELOPMENT I recently worked on a heavily customized coaching marketplace built on top of Sharetribe. While Sharetribe provided the base platform, most of my work involved custom product engineering, including: • Booking, cancellation, scheduling and multi-role workflows • Stripe payments, refunds, subscriptions, fees, credits and checkout logic • Messaging and inbox improvements, reviews, revenue reporting and admin controls • Calendar and timezone fixes, booking identification, support features and production debugging This experience is relevant to SaaS products and marketplaces involving customers, service providers, transactions, subscriptions and operational workflows. GOHIGHLEVEL, VOICE AI & CRM AUTOMATION I also work with GoHighLevel (GHL) and LeadConnector Voice AI. In an insurance-focused AI agent project, I have been implementing and testing: • Inbound and outbound call workflows, AI agent routing and qualification logic • Lead capture, CRM/contact-field automation and appointment workflows • Transcript, recording and workflow troubleshooting DEVOPS, CLOUD ARCHITECTURE & PRODUCTION DELIVERY My portfolio includes architecture diagrams and project work involving Alibaba Cloud, Amazon Web Services (AWS) and Google Cloud Platform (GCP). My DevOps experience includes: • Alibaba Cloud ACK/Kubernetes environments, ingress, networking and managed infrastructure • AWS and GCP architecture and deployment planning for scalable web applications • Docker, Kubernetes, CI/CD, SSL/domain configuration and production deployments • PostgreSQL, MongoDB, Redis and Elasticsearch/Kibana environment support • Production troubleshooting, performance improvements and release support CORE STACK Ruby on Rails | Node.js | Express | NestJS | React.js | Next.js | Angular | PostgreSQL | MySQL | MongoDB | REST APIs | GraphQL | Stripe | Sharetribe | GoHighLevel | Alibaba Cloud | AWS | GCP | Docker | Kubernetes | CI/CD I can join an existing product, understand its business workflows, diagnose difficult application or infrastructure issues and deliver stable, production-ready improvements. Building a SaaS platform, marketplace, booking system, AI automation workflow or cloud-deployed application? Let’s discuss how I can help.