Muhammad Saad

Full Stack Web Developer

Synnestra • Teilzeit

Nov 2024 - Present • 1 yr 6 mos

As a Full Stack Developer at Synnestra ltd, I’ve gained extensive hands-on experience in backend engineering, building scalable and maintainable systems that power modern applications. I’ve worked across both relational and NoSQL databases, including PostgreSQL, MySQL, and MongoDB, designing efficient schemas and ensuring high data integrity. On the server side, I’ve developed RESTful APIs and full-stack features using Express.js and Next.js (App Router), enabling seamless communication between the frontend and backend. I’ve implemented clean architectural patterns like 3-tier architecture (presentation, business, and data layers) and applied principles such as Dependency Injection to ensure code reusability, maintainability, and modularity. Security and authentication have been a major focus of my work. I’ve designed and implemented secure auth flows using JWTs and refresh tokens, and utilized Redis to manage short-lived tokens like access tokens and OTPs, improving both performance and user experience. From a DevOps perspective, I’ve containerized applications using Docker and managed deployments on VPS environments. I’ve also set up CI/CD pipelines to automate build and deployment workflows, enhancing both team velocity and production reliability. Operating in a fast-paced startup environment, I’ve worked closely with clients to deliver Full Stack solutions that are aligned with clients' requirements. This role has significantly deepened my expertise in backend systems architecture, authentication, and cloud-native deployments.