Hassaan S.
Full-Stack Developer | Node.js, Express, NestJS, Supabase, Firebase
🤖 𝐀𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 (𝐂𝐮𝐬𝐭𝐨𝐦 𝐀𝐈 𝐌𝐨𝐝𝐞𝐥𝐬, 𝐍𝐋𝐏, 𝐆𝐞𝐧𝐞𝐫𝐚𝐭𝐢𝐯𝐞 𝐀𝐈), 📱 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 (𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞), ⚙️ 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 & 𝐀𝐏𝐈𝐬 (𝐍𝐨𝐝𝐞.𝐣𝐬, 𝐄𝐱𝐩𝐫𝐞𝐬𝐬.𝐣𝐬, 𝐍𝐞𝐬𝐭.𝐣𝐬, 𝐑𝐄𝐒𝐓, 𝐆𝐫𝐚𝐩𝐡𝐐𝐋), ☁️ 𝐃𝐞𝐯𝐎𝐩𝐬 & 𝐂𝐥𝐨𝐮𝐝 (𝐀𝐖𝐒, 𝐀𝐳𝐮𝐫𝐞, 𝐆𝐂𝐏, 𝐃𝐨𝐜𝐤𝐞𝐫), 🗄️ 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 (𝐏𝐨𝐬𝐭𝐠𝐫𝐞𝐒𝐐𝐋, 𝐌𝐨𝐧𝐠𝐨𝐃𝐁, 𝐅𝐢𝐫𝐞𝐛𝐚𝐬𝐞, 𝐒𝐮𝐩𝐚𝐛𝐚𝐬𝐞) I’m Hassaan Siddiqui, a full-stack developer with 5+ years of experience building scalable web and mobile applications. I’ve worked with startups and businesses to turn ideas into production-ready products, combining strong engineering fundamentals with modern technologies. My focus goes beyond just development — I help define, architect, and scale solutions that are reliable and future-ready. From AI-powered features to robust backend systems, I ensure everything works seamlessly together. Here’s how I can help you: 🤖 𝐀𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 – Build intelligent systems using custom AI models, NLP, and generative AI. From chatbots to workflow automation, I create solutions that make your product smarter and more efficient. 📱 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 (𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞) – Develop high-performance, cross-platform mobile apps with clean UI and seamless API integrations for both iOS and Android. ⚙️ 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 & 𝐀𝐏𝐈𝐬 – Design and develop scalable backend systems using Node.js, Express.js, and Nest.js. I build REST & GraphQL APIs, handle authentication (OAuth, JWT), integrate third-party services, payment gateways (Stripe, PayPal), and implement secure, optimized business logic. ☁️ 𝐃𝐞𝐯𝐎𝐩𝐬 & 𝐂𝐥𝐨𝐮𝐝 – Deploy and manage applications on AWS, Azure, and GCP. I set up CI/CD pipelines, serverless architectures, and containerized environments using Docker for smooth and reliable delivery. 🗄️ 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 – Design and manage databases using PostgreSQL, MongoDB, Firebase, and Supabase. I handle schema design, data modeling, query optimization, indexing, migrations, and data security. If you’re looking for a developer who can take ownership, communicate clearly, and deliver scalable, high-quality solutions — let’s connect and build something impactful
Earnings and projects
Last 6 months ÷ 6
Read daily since Nov 4, under 30 days
Billed in all: $89,639$90k
$9.9k in the last 6 months
Across 8 contracts
Earnings, last 30 days
Tracked from Nov 4, 2026.
Skill rankings: Top 2% in Web & Mobile Design Consultation
Ranked by MRR among everyone on Upwork with the skill.
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