Saad Sohail

Full Stack Developer

Upwork • Freiberufler

Jan 2020 - Present • 6 yrs 4 mos

I have delivered custom web applications, enterprise SaaS platforms, scalable backend systems, REST APIs, AI-powered automation, database design, and cloud-based solutions for clients across technology, business services, real estate, sports tech, and digital platforms. My core expertise is in Node.js, NestJS, Express.js, JavaScript, TypeScript, PostgreSQL, MongoDB, Redis, Socket.IO, and AWS, with a strong focus on building secure, high-performance, and production-ready software. I have designed multi-tenant SaaS architecture, backend development workflows, third-party API integrations, webhook-based automation, authentication systems, role-based access control, payment integrations, job queues, admin dashboards, real-time applications, and scalable data pipelines. I have also developed AI integration solutions using modern LLM workflows, prompt engineering, automation logic, and business process optimization to help clients reduce manual work and improve efficiency. My freelance work has included SaaS development, API integration, backend architecture, database optimization, cloud infrastructure setup, CI/CD pipelines, real-time notifications, booking systems, CRM-style workflows, reporting systems, and custom business automation tools. I focus on clean architecture, maintainable code, performance optimization, scalability, and reliable deployment practices so clients receive software that is not only functional but also ready for growth. From project planning to implementation and delivery, I work closely with clients to understand business requirements, translate them into technical solutions, and build custom applications that improve operations, customer experience, and long-term product value. My goal in every freelance project is to deliver robust, scalable, and business-focused software solutions that combine strong engineering standards with practical results.