David Jentjens

Lead frontend development of GSPT (Global Supply Planning Tool), a React/ TypeScript application used across multiple global markets for potato supply and demand optimization. Architect scalable UI components using PepsiCo's Peacock design system, integrate REST APIs, and coordinate with distributed backend and design teams across the US and India. Deliver features end- to-end in Agile sprints with full QA ownership.

I coordinated a team of Developers and Quality Analysts responsible for geo-monitoring software used by major mining companies including Vale, Usiminas, and Anglo American. We implemented automated and manual testing pipelines covering unit, integration and e2e testing, and maintained a centralized design system to ensure consistency across all client-facing interfaces.

Here I work on both the front end and back end applications of the company, helping develop the SEO of their institutional websites using Next.js and their backend using Ruby on Rails. I also am responsible for creating and maintaining the company's design system, Solaris, which is built primarily for their React and React Native applications.