Co-founded a company that develops a group-buying marketplace for streetwear in Brazil. Engineered a scalable marketplace backend in Django/Python integrating 25+ brands across 5 e-commerce platforms (Shopify, WooCommerce, etc.), synchronizing inventory, stock, and media for over 5,000 products. Reaching 30k+ users via mobile apps (Flutter/Dart).

Leading the development team, enabling millions of “turfs” annually (user-generated shares). Enforced performance standards in a Node.js backend, keeping p95 <= 100ms. Over 3 years, grew mobile app’s weekly active users by 475% through iterative improvements to UX, performance, and feature set.

Collaborated with PhDs in building a large-scale and data-intensive Java application for Maven vulnerability analysis. Developed the plugin to identify vulnerable call chains in transitive dependencies. Analyzed over 100k+ Maven artifacts in TU Delft’s largest computer managed by Kubernetes.

Developed mobile apps in Flutter for a production planning software for factories in the Netherlands, Germany and Belgium. Supported development of the frontend (React) and backend (Django) for OccaSee production planning software. Maintained and extended OccaJuice (.NET), a solution linking OccaSee with SAP business management software.

With support of Google, launched a university club aimed to create a community of students interested in software technologies. It was the very first DSC in the Netherlands. Built & led a core team of 4, organized 6 events, and grew community to over 50+ members.