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Nestor R.

Nestor R.

Power BI, Data Visualization, Dashboards | Excel Expert & VBA

Most BI projects fail for the same reasons — dashboards no one opens, reports built by hand every Monday, and data spread across five tools that don't talk to each other. I help teams fix that. I build dashboards people actually use, automate the reports that eat your week, and turn scattered data into something you can decide on. WHAT I CAN HELP WITH → A Power BI or QuickSight dashboard that loads fast and answers the questions your team is actually asking → Moving messy Excel reporting into something automated and trustworthy → Building a clean SQL data model behind your dashboards so numbers stop disagreeing → Product and conversion analytics setup (Mixpanel, GA4) so you finally see where users drop off → A second pair of eyes on an A/B test, funnel, or KPI structure that doesn't feel right → Migrating legacy Tableau or Excel dashboards into Power BI or Amazon QuickSight WHAT I DO → Dashboard development → Power BI, Amazon QuickSight, Tableau, Looker Studio → Data modeling → DAX, Power Query (M), star schema, calculated measures → SQL Queries → PostgreSQL, Amazon Redshift, AWS Athena, Oracle, SQL Server, MySQL, BigQuery → Product analytics → Mixpanel, event tracking, funnel analysis → Reporting automation & Data Analysis → Python (Pandas, NumPy, Matplotlib), Power Automate, Make, Zapier, Excel → Executive reporting → KPI scorecards, drill-downs, mobile-ready layouts → Data cleaning & ETL → multi-source integration, validation, refresh schedules INDUSTRIES I WORK WITH Banking, fintech, telecom, digital products, e-commerce, and SaaS. If your data lives in AWS, a SQL database, an ad platform, or a spreadsheet someone refuses to give up, I can probably work with it. HOW I WORK Short discovery call or chat to understand what decisions the dashboard needs to support. A working draft within the first week so we iterate on something real instead of a spec. Documentation and a short handover so your team isn't dependent on me to keep using it. TOOLS Power BI • Amazon QuickSight • Tableau • Looker Studio • SQL (PostgreSQL, Redshift, Athena, Oracle, SQL Server, BigQuery, MySQL, ) • DAX • Power Query (M) • Python (Pandas, NumPy) • Mixpanel • GA4 • Power Automate • Make • Zapier • Excel • Google Sheets Send me a message and tell me what you're trying to solve. Happy to take a look and tell you honestly if I'm the right fit.

🇪🇸Madrid, Spain$17/hr100% JSS5.00 (3)Since Jul 2020

Earnings and projects

MRR
$0

Last 6 months ÷ 6

World#373,109 / 412k
🇪🇸Country#3,702 / 4,023
Revenue, last 30 days
$0
Total earnings
$1.3k

Billed in all: $1.3k

World#373,109 / 412k
🇪🇸Country#3,702 / 4,023
Per project
$255
Projects, last 6 months
0
World#209,850 / 412k
🇪🇸Country#1,967 / 4,023
Projects in all
5
80% fixed20% hourly
World#266,042 / 412k
🇪🇸Country#2,530 / 4,023

Earnings, last 30 days

$1.3kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$1,300$1,320$1,340$1,360Oct 8Oct 23Nov 7

Skills