Shaik Sajid Hussain

Built 5 healthcare portals (Patient, Doctor, Diagnostics, Operations, Admin) as the sole engineer — handled everything from system design to deployment. Set up Razorpay for payments across appointments, diagnostics, and subscriptions — platform has processed Rs. 2 Lakhs+ so far. Automated CI/CD with Docker + Jenkins reducing deployment time by 60%; configured Nginx reverse proxy with SSL and caching — APIs respond under 200ms. Maintained 99.9% uptime using Prometheus and Uptime Kuma for monitoring across all services. Optimized image loading with AWS S3, next/image, lazy loading, and CDN caching — Lighthouse 95+, page load under 1.5s. Integrated WhatsApp Business API and Meta Business Suite for automated patient notifications, appointment reminders, and marketing campaigns. Built AI workflows using n8n with OpenAI and Claude APIs for patient engagement, lead follow-ups, and campaign content generation. Used Puppeteer to automate report generation and browser-based task workflows — saved hours of manual work weekly. Handled all SEO — structured data, meta tags, sitemaps, and Core Web Vitals improvements.

QubiNest LMS — Built a multi-tenant LMS with course management, live sessions, and role-based access. Integrated Razorpay for subscription billing with auto-retry on failed payments. Fixed slow database queries using indexing and batching — cut average DB response time by 55%. Added WebSocket notifications for real-time course activity updates. CTI Systems — Built the corporate website for a Luxembourg-based industrial company with 60+ years of experience and 1000+ global installations. Vidyantra — Built a school management SaaS covering attendance, fees, exams, timetables, and staff communication using React.js, TypeScript, Express.js, Prisma, PostgreSQL. Corporate Website — Rebuilt with React.js, Tailwind CSS, GSAP — Lighthouse 95+, page load under 1.5s, bounce rate down 25%.