Sonu Shahuji

Full Stack Engineer with 6 years of experience working on scalable web applications using Node.js, React.js, JavaScript, TypeScript, Next.js, PostgreSQL, and AWS.

Currently working as a Founding Engineer at Aerem Solutions, a solar fintech startup. I joined at an early stage and got the opportunity to make foundational decisions around the tech stack, database design, and CI/CD setup to help deliver the MVP. Over time, the platform has grown to monitor 500+ solar plants, serve 200+ B2B customers, and process 2M+ daily IoT data points.

Handling this scale led to one of my proudest engineering achievements: completely re-architecting our ETL data pipeline for solar energy telemetry. Originally, processing a standard 15-minute data cycle for 5,000 plants took 12 hours to complete. Through aggressive performance optimization, I slashed that execution time down to just 28 milliseconds while scaling the load to 10,000 plants (30,000+ inverters). Today, that pipeline is so efficient it has the capacity to process data for over 30 million plants within a single 15-minute SLA.

Before Aerem, I spent close to 3 years at Cimpress India (National Pen), a global e-commerce platform serving users across 20+ countries. I worked across the full stack — contributing to product features, building REST APIs, and setting up React storefronts with a focus on performance and reliability.