Sylvester Mwinzi

I’m a backend focused software engineer with over 5 years of experience designing and scaling APIs, real time systems, and full stack applications. My strongest tools are NestJS, React, PostgreSQL, WebSockets, and Docker, and I enjoy building solutions that are not only reliable and secure but also performant and business ready.

I’ve delivered solutions that cut downtime by 25%, reduced build times by 20%, and shipped 10+ custom systems with a 95% on time delivery rate. My portfolio includes school and attendance management systems, messaging platforms, and AI powered recommendation apps—all built with a focus on clean architecture, usability, and measurable impahttps://sylvester sila.netlify.app/ct.

I’m also AI ready: experienced in prompt engineering, LLM integrations, LangChain, RAG, CrewAI, and vector databases, enabling me to craft intelligent, adaptive solutions. I thrive on tough problems, stay adaptable in fast moving environments, and bring a go getter mindset to every proje