Focus
Focus helps school teams record incidents, spot patterns, manage follow-up and ask questions in Portuguese. It brings the web app, PostgreSQL data, dashboards, alerts and AI into one workflow.
View case studyData Analyst · Data Engineer · Applied AI
I build data products that turn operations into decisions
Hi! I'm Davi. I build dashboards, data systems, and AI tools that solve real-world problems and make everyday work simpler.
End-to-end deliveryLIVE
BUILDEnd-to-end product workSQLReliable data modelsAIMonitored AI workflowsBIInteractive reporting
Focus · Flagship product
From school incidents to timely intervention
Focus helps school teams record incidents, spot patterns, manage follow-up and ask questions in Portuguese. It brings the web app, PostgreSQL data, dashboards, alerts and AI into one workflow.
4role-specific experiences
2AI providers with fallback
PDF + XLSXoperational exports
E2Econfigured browser tests
Working case study
Selected work
Projects across analytics, engineering and AI
Choose an area to see the problem, what I built, the decisions I made and what I would improve next.
Showing 4 projects.
Job Hunter Agent
A Python workflow that gathers remote data jobs, removes duplicates, evaluates fit with several AI providers, prepares tailored documents and sends the strongest matches to Telegram.
View case studyBattery Lifecycle
An interactive Power BI report that helps operations teams review battery life, compare consumption with historical averages, inspect individual devices and plan maintenance by location.
View case studyExcel Automation Lab
Six practical Excel builds covering invoice creation, email preparation, filtering, fuel tracking, text extraction, reporting and an educational game.
View case studyOne delivery loop
Analyze, engineer and automate
Good analysis depends on reliable data. Useful automation depends on both.
01
Analyze
Understand the question, define the right measures, explore the data and explain the result clearly.
Power BIExcelPythonForecastingKPI design
02
Engineer
Build the data model, access rules and transformations that move information reliably from source to product.
SQLPostgreSQLRLSAPIsPipelines
03
Automate
Connect models and agents to real workflows with fallbacks, checks, monitoring and useful outputs.
LLM workflowsPythonGeminiGroqAgents
See it work
See the work in action
Explore the Focus case study or watch the Excel workflows move from source records to a finished output.
PRODUCT CASE STUDY
Next.js + PostgreSQL + AI
Focus School Intelligence
See how the product connects school workflows, data, analytics and AI.
View case study
Excel + VBA
Email Automation
Turns source records into formatted PDF invoices and prepares email delivery.
Watch video
Excel + VBA
Fuel Control System
Guided data entry, editing, validation, and a management dashboard.
Watch video
Why this range matters
I work from the business question to the finished tool
I started with Excel and Power BI, then expanded into SQL, Python, data models, applications and AI. That background helps me understand the question, prepare the right data and build something people can actually use.
01Start with the decision, not the chart.02Make assumptions and data boundaries visible.03Build for the person who has to use the result.
Explore my GitHubLet's connect
Looking for someone who can analyze the problem and build the solution?
Message me on WhatsApp for a quick conversation or connect with me on LinkedIn to discuss data analysis, data engineering or applied AI roles.