Acerca de Daniel
Generalist software engineer. I'm passionate about computing in all its facets, with a particular fondness for low-level systems — the terminal, databases, and developer tooling. Across my career I've worked in multiple industries, giving me a panoramic view of what it takes to build complex systems. I see communication as a fundamental tool for planning and clearing bottlenecks, and I focus on concrete, high-impact objectives that demand collaboration across multiple stakeholders.
Español
Bilingüe o nativo
Inglés
Bilingüe o nativo
Francés
Nociones
Japonés
Nociones
Acepta trabajo presencial
San Sebastián (hasta 50 km)
Experiencia
- UpworkSenior Software Engineeroctubre de 2023 - junio de 2026 (2 años y 8 meses)
- Co-designed and built an internal Claude Code plugin that migrated entire microfrontends to new design styles. Its validation process successfully migrated 80% of the platform to a new presentation in one month with minimal engineering resources.
- Led frontend development of the Boosted Jobs and Ad Credits features, Upwork's core monetization features, in Nuxt 3, Vue.js, and GraphQL. Upwork's SEC 10-K filings cite these as a major driver of Marketplace take-rate growth from 13.8% to 18.0% on $662M revenue.
- Migrated critical data-fetching from a legacy PHP monolith to GraphQL with Apollo, eliminating N+1 queries and cutting average API response times by 20%; raised test coverage from 40% to 90% with a Cypress end-to-end (E2E), Jest, and Vitest strategy the frontend guild still uses.
- Tecnologia UrbanaLead Software Engineerenero de 2023 - diciembre de 2023 (11 meses)
- Coordinated a team of three developers to build a real-time traffic monitoring system processing 1080p video from 50 cameras across 5 cities. We built the graphical interface with Next.js and NestJS and a Go pipeline carrying the camera feeds to the NestJS platform — the Go service processed the raw video on the server with OpenCV and sent the processed results to our NestJS backend.
- LantumSenior Software Engineerjunio de 2021 - enero de 2023 (1 año y 7 meses)London, UK
- Redesigned the billing system while preserving its core logic, cutting support tickets by 50% — the reports were tied to traffic-congestion issues and locks blocking access to resources with cyclic dependencies.
- Shipped drag-and-drop shift scheduling across web (React, TypeScript) and mobile (React Native) with availability management and conflict detection. 30,000+ National Health Service (NHS) workers use it to manage their rotas.
- Replaced polling across 3 client apps with a GraphQL real-time subscription layer. Live shift availability, no page refresh needed.
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Formación
- Developer, Information TechnologyHack Academy2015Developer, Information Technology
- Bachelor of Science in PsychologyUniversidad Metropolitana (VE)2015Bachelor's Degree, Psychology