Saulo Vargas

Contributed to a complete rewrite of a cross-platform study app by unifying Windows, iOS, Android, and web codebases into a single modern frontend. Built atomic UI components from Figma specs and shipped features across a 1,120+ language platform with strict accessibility, i18n, and quality standards.

Founded and led RusticIT, delivering customer portals, SaaS platforms, internal tools, and marketing websites for international clients. Delivered 15+ projects per year across 5 countries, grew and coordinated a team of up to 7 people, and built EntrenoLibre for tournament organization, live scoring, and AI-assisted content generation.

Owned most of SmartExi's implementation for ATEX safety calculations, explosion-protection compliance workflows, and PDF certificate generation using tRPC, Prisma, and PostgreSQL. Delivered full-stack UI flows, data models, safety logic, and release automation to accelerate product readiness.

Learned Rust and Leptos to contribute to PlantMyTree, implementing image upload, gallery browsing, and plantation-growth tracking features. Contributed to Leptos-Use, an open-source Rust/Leptos utility library for the broader Leptos ecosystem.

Delivered pixel-perfect, animation-heavy features for WatchWorthy, a consumer mobile app for personalized TV and streaming recommendations. Implemented 10+ onboarding and recommendation features across Vue, Nuxt, Node.js, Sequelize, and Cytoscape.js, maintaining consistent behavior across Android screen sizes.

Built complex workflows for Canaray Voxel, including drag-and-drop tree views, anatomy organization, case navigation, and collaboration tools for dental imaging. Designed Render Tests for internal regression detection using GitLab, Slack, and Trello, and created a Chrome extension to inspect rendered-view data flow and improve debugging.

Led engineering and long-term maintenance of public-health systems used by 1,000+ internal users across healthcare and administrative areas. Consolidated 900,000+ fragmented patient records into 300,000+ unified records (67% reduction) with zero known false positives, and contributed improvements supporting ISO 9001 quality standards.

Completed a Systems Analyst education program in Olavarría, Argentina from 2014 to 2017.

Activities and societies: Built accessibility-focused software recognized with the Argentine Presidential Prize.

Earned a Technician in Personal and Professional Informatics credential in Olavarría, Argentina from 2003 to 2007.