Business by training, engineer by trade.

Analytics & Data Engineer

Becall Group · Be Call Digital unit · Spain · BPO and contact centre

I design, deploy and run the data systems that the reports, the operation and the clients depend on: I integrate dialers, client CRMs and ad platforms, build the data layer, model Power BI as code and keep the B2B integrations running in production. Clients: Repsol, Eni Plenitude, ASISA, Club Internacional del Libro, EDP, Finetwork, Vodafone, MásMóvil, Jazztel, ADT, Verisure, Segurma, Gana Energía and LoJack.

• Merged 5 or more duplicated Power BI reports into one configuration-driven model (45 tables, 187 measures) with dynamic RLS and incremental refresh: onboarding a project went from republishing to adding a row.
• Optimised the dialer's MariaDB server with evidence-based diagnosis: the critical view went from over 90 s to 10 s and 1.38 million pointless statements a day were removed.
• Built a unified CRM in Python for some 11 clients: −54% rows read per day, and sales that never reached the CRM down from 22% to 1%.
• Delivered the complete integration with Club Internacional del Libro (SFTP, near-real-time REST API and Power BI) with 511 tests and 43 of 43 records accepted on the first delivery.
• Deployed a webhook receiver for the partner Ignium with the outbox pattern and allowlist-based privacy: about 3 ms response time and 0 errors at launch.
• Optimised the integration worker for Eni Plenitude's web service from 106 s to 0.3 s per cycle.
• Closed the marketing loop by sending real sales to Meta through the Conversions API, so campaigns optimise for customers rather than leads.
• Automated the web CRMs of Repsol, Plenitude, Finetwork, Gana Energía and ADT with SSO, OTP, MFA and anti-bot protection: reliability from 30% to 90% or more.
• Automated the reconciliation of 18 months of commission self-invoices with a 93–97% match.
• Attributed 90.6% of ASISA's policies to their originating call and delivered EDP's B2B dashboard in 4 days.
• Migrated the reports from Nextiva/BigQuery to OCM/MariaDB preserving 341 measures, and led the rollout of Notion in the area.
• Created a framework of AI skills for Power BI development with Claude Code, adopted in daily work.

Business Intelligence Analyst

Viscofan · São Paulo, Brazil · International training placement (ICEX Vives)

• Automated solutions to keep sales, finance and market intelligence informed.
• Import intelligence reports used by management in strategic decisions.
• Optimisation of ETL processes to guarantee data quality and availability.
• Design and management of interactive Power BI dashboards.
• Training employees in data analysis with Power BI.

Research collaborator

University of Las Palmas de Gran Canaria (ULPGC) · University Institute of Cybernetics, Business and Society

• Research for scientific papers on technology and business.
• Extraction, cleaning and preparation of datasets for analysis.
• Data analysis to identify patterns and draw actionable conclusions.