Oscar Bermejo

Senior Data & Automation Specialist · Sr BI Engineer at Amazon · Founder
Netherlands obermejo@live.com +34 616 13 73 76 LinkedIn

7+ years building and owning analytics and automation systems for large-scale, operational environments. I help established companies modernize reporting, automate operational workflows, and introduce pragmatic AI solutions to reduce cost, improve reliability, and speed up decision-making.

2024 — Present
Project
cityleaks.io
Founder & Developer
AI-powered restaurant discovery platform (web + mobile) · 0 → 5,000+ MAU
  • Designed, shipped, and operated the full stack end-to-end — product, data, and infrastructure
  • Designed event tracking architecture across web & mobile, enabling reliable funnel and retention analysis
  • Integrated Strands + Bedrock agents for data enrichment and context-aware recommendations
Python, FastAPI, React, PostgreSQL, Redis, SQL, LLM APIs, RAG, AWS, Analytics
Jun 2020 — Present
Work
Amazon
Sr Business Intelligence Engineer — Analytics & AI Products
EU & Japan Operations · 200+ sites · Multi-region · Mission-critical KPIs
  • Owned data quality, reliability, and validation for high-stakes operational reporting
  • Designed and maintained production data pipelines using Python, SQL, Spark, Airflow
  • Led architecture of analytics products used daily by operators, managers, and executives
  • Built AI-powered monitoring systems (AWS Bedrock) reducing operational response time by 50%
  • Led analytics implementation for a new operating model, enabling a 50% increase in operational volume while reducing costs
  • Partnered with engineering, operations, and finance teams to eliminate root causes of reporting and process inefficiencies
  • Mentored analysts & engineers; set data quality standards and review gates for production analytics systems
2018 — 2019
Education
Master in Data Analytics
BData Institute
Nov 2018 — Nov 2019
Work
SDG Consulting
Business Intelligence Consultant
  • Delivered end-to-end BI solutions (ETL, modeling, dashboards) for enterprise clients
  • Defined data models, governance, and reporting standards for enterprise clients
  • Introduced SAP Analytics Cloud as a new strategic platform; recognized by SAP as top project
2013 — 2017
Education
Engineering in Industrial Technologies
Universitat Politècnica de Catalunya

Skills

Core Capabilities
Data Platform Design Process Automation Reliability Engineering Operational Dashboards AI Monitoring & Forecasting Event Tracking & Analytics
Technical
SQL Python Airflow dbt PostgreSQL AWS LLM APIs RAG APIs & Backend Spark
Delivery & Leadership
Roadmap Ownership Stakeholder Alignment Systems-first Mindset End-to-end Delivery

Languages: Spanish (Native) · Catalan (Native) · English (Fluent) · French (Intermediate)

Interests: Skiing · Building products · AI