01Scattered data
Numbers you can trust
I connect ERPs, APIs and spreadsheets, validate data loads and flag delays. Teams work from traceable numbers instead of reconciling versions before every meeting.
See an example01 / LF
Leonardo Filho · Data Engineering & Analytics
Reliable data.Better decisions.
I help companies cut manual work and see what needs attention. I connect systems, automate checks and deliver reliable metrics.
Belém, Brazil · UTC−3
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LF / 0101 · For your business
Where I can make a difference
I work on projects where slow processes, unreliable numbers or limited visibility hold teams back.
02Manual workflows
Less time spent checking
I turn rules into automated checks with human review and alerts for each owner. Teams can focus on exceptions that require action.
See an example03Limited visibility
A clearer view for leaders
I build dashboards that connect finance and operations to business questions. Leaders can see changes, priorities and data health.
See an exampleHave a slow process or a metric nobody trusts? Share the context and let's explore a project.
Discuss a project02 · Applied work
Selected projects
Internal products and portfolio studies: the problem, the implementation and the business application.
Q1 / 05Illustrative data
01
Explore projectQuadra One — executive platform
An executive platform with 51 pages reading BigQuery directly, with corporate sign-in and role-based access.
AUDIT / 06Real flow · no internal data
02
Explore projectFinancial audit automation
A bot that audits ERP accounts payable against 14 rules, goes through human review and alerts each owner.
Portfolio study03
Explore projectSalifort — People Risk Lab
An interactive product that turns an attrition study into signals, scenarios and decisions worth investigating.
03 · Career
Connecting technology and operations
From software quality to data products used in everyday business operations.
Data Engineering Specialist
Quadra Engenharia
Build and operate Google Cloud pipelines that integrate ERP, APIs, files and spreadsheets into BigQuery, with idempotent loads and source-to-target validation.
Read more about this role
- Built the accounts payable audit bot: 14 rules, human review and one email per owner. Coverage grew from 2 to all 32 group companies and false positives fell from 58% to 34%.
- Develop Quadra One, an executive platform with 51 pages, corporate sign-in and role-based access, presented to more than 50 people across the company.
- Shared telemetry for 9 bots and monitoring of 53 data sources, so delays and failures surface before they reach business reports.
PythonBigQueryGoogle CloudCloud RunNext.jsTypeScriptPower BI
Data Analyst
Nexar
Structured industrial sensor and time series data for analytics and model training.
Read more about this role
- Prototyped machine learning models for early equipment failure detection.
- Delivered the analytical and visual layer of the MVP used in investor presentations.
Pythonscikit-learnMySQLTime seriesFlaskReact
Quality Analyst
Enacom Group
Analyzed system logs and performance data to identify critical bottlenecks, contributing to a 10% increase in application stability.
Read more about this role
- Automated testing and log analysis in Python, improving QA process efficiency by 30%.
- Built Power BI dashboards and quality reports to support development roadmap priorities.
PythonPower BISQLTest automation
04 · Education & learning
Building on what I know
Degrees, specializations, courses and badges that complement my hands-on work.
Education
MBA in Artificial Intelligence, Data Science and Big Data
PUCRS
B.Sc. in Computer Engineering
CESUPA
Languages
- PortugueseNative
- EnglishAdvanced C1 · EF SET 70/100
- SpanishConversational
Courses and credentials
Specialization · 2026Latest
Data Engineering, Big Data, and Machine Learning on GCP
Coursera · Google Cloud Training
View credentialProfessional certificate · 2026
Preparing for Google Cloud Certification: Cloud Data Engineer
Coursera · Google Cloud
View credentialCourse · 2026
Build Streaming Data Pipelines on Google Cloud
Coursera · Google Cloud
View credential05 · Contact
Your next project starts with a conversation.
If reports disagree, checks take hours or decisions lack clear information, tell me the context. We can define a project with a clear scope.
leonardofilho.work@gmail.comDownload resume