Guillermo Lopez

Built and shipped Provider Subrogation pipeline features, including a worker service that processes outsourced CSV/TXT/Excel response files with auto-detected delimiters and BDD test coverage. Improved API response times ~20% using cursor-based pagination and query tuning, and reduced load times by migrating Angular 14→17 and replacing Material design with Bootstrap.

Set technical direction and project specifications for fitness technology client engagements, owning quality through pull request reviews and engineering standards. Mentored engineers and expanded the stack with Tailwind, NestJS, and Strapi while continuing to ship as an IC on API work matched to client needs.

Built responsive Angular and React front-end architectures and domain-based Node.js/Express back-end services using Sequelize. Designed and shipped REST APIs connecting client systems to third-party services, delivering features end to end from discovery through production deployment.

Reduced lead time 25% across multiple projects by escalating impediments and driving workflow changes. Led agile execution for two squads, coordinated Big Room Planning pre-work, and collaborated with Product Owners to co-design OKRs.

Built a medical profile management system and a digital consultation module integrating patient records and inventory using Angular, Node.js, and SQL databases. Designed and deployed an inventory and reporting/user management platform and a POS sales application with real-time data, including SAP integration and category-based discount logic.

Built management systems for institutional clients that cut processing times by ~30%, including advanced file management with search for faster document retrieval. Implemented event and error logging for monitoring and case tracking and designed legal workflows for notifications and subpoenas.

Developed landing pages and portal entry points to improve user access and engagement, including front ends with navigation, PDF generation, and request/process management. Built secure Node.js backends following best practices for handling confidential information.

Studied Computer Systems Engineering at UNITEC, Universidad Tecnológica Centroamericana in Tegucigalpa, Honduras.