Hire the Best Data Modeling Specialists
in Brazil

More than 3,000 reviews on G2
Rating is 4.5 out of 5.
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of Upwork by G2 peer reviewers
Caio B.

Tatui, Brazil

$15/hr
5.0
6 jobs

Data Analyst & Power BI Specialist | Transforming Data into Actionable Insights Hi there! I’m a passionate and detail-oriented Data Analyst and Power BI Developer with 2 years of hands-on experience in data analysis, visualization, and business intelligence. As a university student, I’ve dedicated the past two years to mastering data analysis tools and building a strong portfolio of projects that showcase my ability to turn raw data into meaningful insights. I specialize in creating interactive dashboards, data visualizations, and analytical reports that help businesses make data-driven decisions. Whether it’s cleaning messy datasets, building dynamic Power BI dashboards, or uncovering hidden trends, I’m here to help you unlock the full potential of your data. What I Offer: ✔ Data Analysis & Insights: From exploratory data analysis to uncovering key trends, I help you understand what your data is telling you. ✔ Power BI Dashboards: I create visually appealing, interactive dashboards that make complex data easy to understand and act upon. ✔ Data Cleaning & Transformation: I ensure your data is accurate, consistent, and ready for analysis. ✔ Excel Solutions: From pivot tables to custom formulas, I can handle all your Excel needs. ✔ Data Storytelling: I turn data into compelling stories that drive decision-making and business growth. Tools & Technologies I Use: ➤ Power BI (Power Query, DAX, Data Modeling) ➤ Excel (PivotTables, Charts, Formulas) ➤ SQL (Data Querying and Manipulation) ➤ Python (Pandas, NumPy for Data Analysis) Why Work With Me? Attention to Detail: I take pride in delivering accurate and insightful analyses. Client-Focused: I work closely with you to understand your goals and deliver solutions that align with your needs. Quick Learner: As a student, I’m constantly learning and adapting to new challenges, ensuring I bring fresh ideas to every project. Let’s Grow Together! By hiring me, you’re not just getting a freelancer—you’re investing in my education and growth as a data professional. Your support helps me continue learning and improving, allowing me to deliver even better results for you in the future. SPECIAL OFFER PRICE - As new profile on upwork i'm charging less, help me build my profile. Ready to turn your data into actionable insights? Let’s work together to drive your business forward!

  • Data Modeling
  • Python
  • Microsoft Power BI
  • Microsoft Excel
  • SQL
  • Data Analysis
  • Data Analytics
  • Data Manipulation Language
  • Data Cleaning
  • Data Extraction
  • Data Analytics & Visualization Software
  • Data Visualization
  • Dashboard
  • Microsoft Power BI Data Visualization
  • Microsoft Power BI Development
Paulo O.

Sao Paulo, Brazil

$60/hr
5.0
99 jobs

I am a Top Rated Plus freelancer on Upwork and ranked in the top 3% of all freelancers world-wide in my ability to develop reliable Power BI dashboards, Microsoft Fabric data platforms, and automated reporting systems that leadership can trust. I have provided support services to 90+ clients, made $500K+ on Upwork, and received 50+ five-star ratings for helping businesses to turn messy, disconnected and complex data into clear dashboards, scalable data models and reporting environments that are ready for decision-making. I have more than 14 years of experience in Business Intelligence, Data Analytics, SQL, and Microsoft technologies, and specialize in Power BI and Microsoft Fabric solutions that are not limited to just a visualization. My interests are in establishing the solid groundwork for the reporting system: clean data models, optimized SQL layers, reliable pipelines, solid DAX logic, row-level security, and dashboards providing answers to real business questions. When people want me to assist them, they typically ask me questions such as: Why are our Power BI reports slow, unreliable or difficult to maintain? How to make our reporting model scalable? How to transition to a structured Power BI or Fabric reporting system? How can we tie systems such as NetSuite, QuickBooks, Dayforce, Shopify, Klaviyo and Dynamics 365 together in a single report layer? How to provide leadership with accurate KPIs without manual copy/paste each week? How do we get the reporting, alerts, approvals and data refreshes automated throughout the business? Being a Power BI and Fabric expert, I lead organisations to create reporting systems that are fast, structured and scalable, and not just report dashboards that will impress the first day of use. Core Expertise: ✔️ Power BI & DAX Executive dashboards, KPI reports, financial reporting, operational analytics, HR dashboards, sales reporting, complex DAX measures, row-level security, star schema design, report optimization, and semantic model cleanup. Bulkier data sets and reporting structures have been reimagined to make dashboards faster, lighter and easier to maintain. ✔️ Microsoft Fabric & SQL Warehouse Data pipelines (end to end), SQL warehouse, stored procedures, fact and dimension tables, reporting layer, dataflows, data structures in Lakehouse or Warehouse and company-wide datasets. Establish organized structures to facilitate reporting uniformity among teams, departments, and locations. Optimize the data structure and its performance for the application.Optimize the data structure and application performance. Fresh star schemas, optimized SQL queries, repeatable reporting layers, better refresh performance, smaller dataset size, and enhanced data governance. My mission is to ease your reporting environment to scale, audit and maintain. ✔️ Power Automate Automating workflows, notifications in Teams, Adaptive Cards, scheduling jobs, approval flows, API calls, email notifications, and report automation. If you still manually have to move data between systems, I can usually get this automated for you. ✔️ Power Apps Inside apps to enter, approve, inspect, monitor operations, and replace paper or manual spreadsheets. Develop apps that interface with SQL, SharePoint, Dataverse, and other business systems. ✔️ Integrations & APIs Experience seamless integration of data from NetSuite, QuickBooks, Dayforce, Klaviyo, Shopify, Dynamics 365, REST APIs, Excel, SharePoint, SQL databases and more. I can normally import that data into your reporting system if it's available via an API, connector, database, or export. Industries I have worked across include energy, oil & gas, banking, pharma, manufacturing, e-commerce, medical devices, HR analytics and operational reporting amongst others. 💬 Client Feedback ⭐⭐⭐⭐⭐ I have to say “Paulo has been an essential partner in developing our Power BI reports. His technical skills and deep understanding of data visualization allowed us to turn complex data into clear, insightful, and user-friendly dashboards. He was responsive to feedback, quick to implement changes, and often went above and beyond to suggest improvements that added real value to the final product.” I'm in Brazil (GMT-3) and overlap with US business time. I have the opportunity to work with American and international clients on a daily basis and, as such, I do not ever have to worry about communication, documentation, or business context. Your situation is too complex to deal with on your own, so if you're looking for a Power BI, Microsoft Fabric, or reporting automation partner who can help, reach out to me and give me a quick description of your situation. I will be honest about what I'm not good at and what is the next best steps.

  • Data Modeling
  • Microsoft Power BI
  • Data Visualization
  • Data Analysis
  • Microsoft Excel
  • SQL
  • Microsoft Power BI Data Visualization
  • Business Intelligence
  • Microsoft Power BI Development
  • Dashboard
  • Microsoft PowerApps
  • Microsoft Power Automate
  • Office 365
  • Microsoft SharePoint Development
  • Microsoft SharePoint
  • Automation
  • API Integration
  • API
  • Artificial Intelligence
  • Microsoft Azure
Isadora B.

Passos, Brazil

$10/hr
5.0
8 jobs

I turn messy data into clear decisions — and I make sure your clients actually understand them. With hands-on experience in SaaS environments, I combine strong technical skills with a real client-facing background. I've worked with production databases, built dashboards that drove retention decisions, and supported B2B clients through onboarding, troubleshooting, and day-to-day success. What that looks like in practice: — Built Power BI dashboards integrated with Google Sheets for a SaaS startup monitoring a 50+ client B2B portfolio, enabling proactive churn prevention — Ran complex SQL queries in production environments to investigate incidents and validate data integrity — Managed full client lifecycle in GoHighLevel: onboarding flows, CRM automations, lead nurturing and follow-up — Analyzed Shopify store performance across international markets — identifying regional sales patterns, return issues, and sourcing better suppliers on AliExpress — Integrated tools via Zapier (GHL, Stripe, Notion) to eliminate manual steps in commercial processes What I bring to your project: 📊 Data & Analytics — SQL (CTEs, Window Functions), Power BI (DAX, modeling), Python (Pandas), Google Sheets 🤝 Customer Success & SaaS Support — onboarding, relationship management, CSAT 90%+, process documentation 🔄 Automation & Integrations — GoHighLevel, Zapier, CRM workflows 🗄️ Data Engineering — ETL pipelines, AWS (Glue, Athena, S3), data cleaning and validation If you need someone who understands both the data and the people behind it — let's talk.

  • JavaScript
  • Python
  • Linux
  • Docker
  • PostgreSQL
  • CSS 3
  • HTML5
  • SQL
  • Microsoft Power BI
  • AWS Lambda
  • Amazon EC2
  • Amazon S3
  • Snowflake
  • Microsoft Azure
Tiago S.

Cascavel, Brazil

$45/hr
4.6
5 jobs

Clients say if feels like having a team member who never sleeps-WORKFLOWs run automatically, reports are ready on time, and Customer inquiries get instant, intelligent responses via integrated ChatBot. "Quem não arrisca, não petisca" ( "Nothing ventured, nothing gained" ) Smart Automation takes Courage, but the Payoff is Worth it. I build AI-driven CRM and ERP system that Automation Workflows, streamline operations, and turn business data into action. From sales automation, inventory management, and finance workflows to Real-Time dashboards and AI assistants, I deliver efficient, reliable, and User-Friendly Solution. Tools & Stack: Odoo, HubSpot, Salesforce, React, Node.js, Python, PostgreSQL, AI integrations

  • CRM Software
  • CRM Automation
  • ERP Software
  • SaaS Development
  • AI Chatbot
  • Python
  • API Development
  • React
  • Node.js
  • Odoo
  • HubSpot
  • Salesforce
  • PostgreSQL
  • AI Agent Development
  • iOS
  • Android App
  • Mobile App
  • Data Analysis
  • Data Engineering
  • Financial Model
Renan D.

Porto Feliz, Brazil

$35/hr
5.0
3 jobs

I help data‑driven companies turn messy, legacy data into AI‑ready foundations and intelligent agents. In the last years I have: - Designed full‑stack AI agent ecosystems using LangGraph (workflow orchestration, REST APIs, Databricks SQL). - Improved a WhatsApp real‑estate chatbot by implementing Text‑to‑SQL with LangChain and PostgreSQL views (more accurate answers, less manual support). - Built Microsoft Fabric Lakehouse architectures (30+ tables) and semantic layers ready for analytics and AI. Led large‑scale data migrations (100M+ records) from SAP HANA and Oracle into modern Lakehouse architectures. What I can do for you: - Design and implement AI agents and chatbots (customer support, operations, analytics copilots) using LangGraph, LangChain and LLM APIs. - Build RAG and Text‑to‑SQL systems on top of your data warehouse / lakehouse (Fabric, Databricks, SQL Server, PostgreSQL, DynamoDB). - Prepare your data for AI (Medallion architecture, Lakehouse design, semantic models, streaming ingestion). - Migrate and modernize legacy data (SAP, Oracle, on‑prem SQL) into cloud‑native, AI‑friendly platforms on Azure or AWS. Tech stack: - Python (advanced, multiprocessing, Pydantic), SQL, PySpark and a little Javascript - LangGraph, LangChain, Azure OpenAI / OpenAI, Databricks, Microsoft Fabric - Databases: Oracle, SAP HANA/ECC, PostgreSQL, SQL Server, DynamoDB, Aurora If you need to make your data usable by AI or build agents on top of it, I’d be happy to discuss your project. Also Certified Fabric, Azure, Oracle

  • Data Modeling
  • Data Extraction
  • ETL
  • ETL Pipeline
  • Data Mining
  • Python
  • Microsoft Power BI
  • SQL
  • Git
  • Microsoft Azure SQL Database
  • Data Lake
  • Data Engineering
  • Azure Service Fabric
  • Data Warehousing & ETL Software
  • Databricks Platform
Tiago P.

Sao Paulo, Brazil

$65/hr
5.0
4 jobs

I fix data that teams stopped trusting. If your scraper broke, your reports do not match, or your pipeline fails every time the source changes, that is the work I do. I make the data come in clean, get checked, and stay reliable. I have worked with data for 19 years, mostly in banks, finance, and telecom, where a wrong number has real consequences. One example: a vendor changed a CSV layout with no warning and broke a bank's reports silently, no error, just wrong numbers. I rebuilt that pipeline so it could never fail silently again. On Upwork so far: - Web scraping and data aggregation, 400+ hours, sports results from many sources - Cleaning messy data into AI-ready datasets - Data architecture for business-critical reporting - 4 projects, all with 5-star public reviews What I can do for you: - Build or fix web scrapers (Python, Selenium, Playwright, APIs) - Build or repair ETL and data pipelines - Clean and validate datasets for AI, BI, or analytics - Model and tune SQL - Prepare clean reporting data for Power BI and dashboards I use AI to work faster, but I test and own every line I deliver. Tell me your data source or the workflow that broke, and I will tell you the fastest way to fix it.

  • Data Modeling
  • Web Scraping
  • Python
  • Data Scraping
  • ETL
  • Data Extraction
  • dbt
  • SQL
  • Data Cleaning
  • API Integration
  • PostgreSQL
  • BigQuery
  • Selenium
  • Data Analysis
  • Microsoft Power BI
  • Microsoft SQL Server
  • Machine Learning
  • Cloud Database
  • C#
  • JavaScript

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