Central Bank Indicators Pipeline
Automated ELT pipeline that updates SELIC, IPCA and FX rates daily straight from the Central Bank API.
PythonpandasBigQuerydbt CoreGitHub Actions
Open to opportunities in Data
Gustavo Rafael
Data Migration Analyst · Omnismart
About
From the front line to data
Data Migration Analyst at Omnismart, remote from São Paulo, Brazil. I started in Tier 1 Support, grew into Tier 2, and now lead the process of migrating customers from a legacy PABX to a new platform — from requirements gathering to cutover. Along the way, I built an internal migration tracking system with PostgreSQL, Python and Streamlit, and started turning operational data into strategic Power BI dashboards. I hold a degree in Computer Science and I'm pursuing a postgraduate degree in Big Data & Analytics Intelligence, aiming to grow into Data Engineering.
Numbers
0
+Published projects
0
Automated data tests
0
+Orders analyzed
Featured Projects
Olist Payments Analytics
Layered dbt analysis over ~100k Brazilian e-commerce orders to understand payment methods and installments.
PythonpandasBigQuerydbt Core
Migration Control System
Internal system built at Omnismart to track and measure the quality of customer migrations to the new PABX.
PostgreSQLPythonStreamlitPower BI
View details →Internal case study
Earlier projects
France Export Sales Analysis
Exploratory analysis of export data focused on the French market, using Python.
PythonpandasNumPyMatplotlib
Tech Company Sales Analysis
Complete data cleaning and enrichment workflow over sales data to generate business insights.
PythonpandasNumPyJupyter
CLI Sales System
Python command-line application for product registration, inventory and sales.
Python
Experience
Aug 2026 — present
Data Migration Analyst · Omnismart
Remote, São Paulo, Brazil
- Responsible for the full customer migration process from the legacy PABX to the new platform, from requirements gathering through cutover.
- Configured VoIP environments (extensions, queues, IVRs, trunks, DIDs, routes, chatbots and satisfaction surveys) on the new PABX, ensuring service continuity and quality.
- Built an internal migration tracking system with PostgreSQL, Python and Streamlit, enabling step tracking, quality metrics and bottleneck analysis by owner.
- Assessed and measured migrated vs. existing components in the legacy environment, identifying and removing obsolete configurations from customer environments.
- Developed Power BI dashboards from the collected data, turning operational tracking into strategic indicators for migration follow-up.
Sep 2025 — Aug 2026
Tier 2 Support Analyst · Omnismart
Remote, São Paulo, Brazil
- Handled higher-complexity technical tickets, focused on VoIP and PABX infrastructure.
Apr 2025 — Sep 2025
Tier 1 Support Analyst · Omnismart
Remote, São Paulo, Brazil
- First-line support and ticket triage, starting the journey at Omnismart.
Stack
Languages
- Python
- SQL
Data & Cloud
- PostgreSQL
- BigQuery
- dbt
- pandas
- Google Cloud
- Jupyter
BI
- Power BI
- Streamlit
Tools
- GitHub Actions
- Git
- Linux
- VoIP/PABX
Education & Certificates
B.Sc. in Computer Science
Anhembi Morumbi
Completed Dec 2025
Postgraduate in Big Data & Analytics Intelligence
PUCPR
In progress
Certificates
- SQL Impressionador (Advanced SQL, 92h)
Hashtag Treinamentos · Jun 2026
- Git and GitHub
Hashtag Treinamentos · Jun 2026
- Scrum Fundamentals Certified (SFC)
SCRUMstudy · Nov 2023