José Antonio Cid Montero

Short-term freelance engagement supporting my relocation to Mainz. Key achievement: I worked with AI-assisted development (Claude) while owning architecture validation, code review and QA of all AI-generated code. I delivered backend features, PostgreSQL schema migrations (Drizzle ORM), async job pipelines (Redis + BullMQ) and Sentry observability. Contract concluded as planned upon platform delivery. Stack: TypeScript · NestJS · Next.js · PostgreSQL · Redis · BullMQ · Railway

Core backend contributor on Fuse, Zoetis' IoT platform linking veterinary lab analysers with clinical systems across 10,000+ installations; near-zero critical defects over 6 years. Key achievement: I led the Java 8→17 migration on a live system with phased, idempotent scripts — zero critical defects, adopted as team standard. I owned the MySQL/MongoDB layer (JPA/Hibernate) and HL7/ASTM/POCT integrations, and mentored two juniors. Stack: Java 17 · Spring Boot · Kubernetes · Azure AKS

I developed Java/Spring web applications for academic administration at Universitat Pompeu Fabra: a student appointment booking system for university ID card issuance and HR management tools used daily by thousands of students and staff. I automated recurring manual administrative procedures, freeing staff time for higher-value tasks. Stack: Java · Spring · Oracle

When a Bingo title required adaptation for the Norwegian regulated market — one shared draw per minute synchronised server-side for all concurrent players — I redesigned the core game logic to enforce compliance; the title was launched and certified for Norway. I also shipped multiple OGames arcade titles, implementing gameplay mechanics and performance optimisations. Stack: Java · Server-side Game Logic · Arcade Hardware

I delivered high-quality UI for two major mobile titles with tens of millions of downloads, working with UX/UI designers from prototype to global release on iOS and Android. I integrated the UI layer with backend game systems — inventory, matchmaking, in-game store, live events — developing early familiarity with client-server integration patterns. Stack: C++ · Mobile UI · iOS · Android

I designed and implemented Java ETL logic (InterSystems Caché via JDBC) for a regional public healthcare data migration (client: Servei Català de la Salut), with data validation and integrity checks across multiple hospital environments. First professional exposure to healthcare data standards and regulatory compliance — a specialisation I carried forward throughout my career. Stack: Java · ETL · JDBC · Healthcare