Cristiano is available for hire
Hire CristianoCristiano Savino
Verified Expert in Engineering
Software Developer
São Paulo - State of São Paulo, Brazil
Toptal member since June 18, 2020
Bio
For the past 25 years, Cristiano has worked as an independent consultant with startups and established companies in the US, UK, Canada, and Latin America. He specializes in dealing with enterprise systems based on Oracle/EBS for companies such as Unilever, Oracle, and Edenred. Cristiano also has solid skills in system/data analysis, BI, reporting, integration, and Oracle EBS (GL, AP, AR, HR, OM).
Portfolio
SAV'N Systems
MySQL, Python, PL/SQL, Oracle EBS, SQL, Microsoft Power BI, Microsoft SQL Server
Measured Analytics and Insurance, INC
SQL, Microsoft Power BI, DAX, Power Query
Crissoft Consultoria
PL/SQL, Oracle EBS, SQL
Experience
- SQL - 20 years
- Oracle - 20 years
- Oracle E-Business Suite (EBS) - 20 years
- Oracle RDBMS - 20 years
- MySQL - 8 years
- Python - 7 years
Availability
Part-time
Preferred Environment
MySQL, Python, PL/SQL, Oracle
The most amazing...
...project was creating a database algorithm to clone large database systems into consistent, reduced subsets so it can generate multiple development environments.
Work Experience
Owner | Team Leader
2008 - PRESENT
SAV'N Systems
- Acted as a data engineer since 2021, creating ETL routines using Python, Airflow, and SQL. Provided BI Panels with Power BI for POs. Worked as DBRE, generating workloads with Terraform and optimizing AWS Costs.
- Served as a data analyst for the client HomeRefill from 2017-2021 and created reports, BI routines (ETL), and dashboards.
- Developed MVP features to enhance HomeRefill's company process; worked with MySQL and Python.
- Created a database algorithm for Edenred (2015-2016) to clone large database systems into consistently reduced subsets so that it can generate multiple development environments.
- Supported an Oracle EBS with a team (GL, AP, AR, FA). Performed enhancements as a business and system analyst for CWT (2009-2015).
- Created several integrations between the business travel agency and customers using mainly Microsoft SQL Server and procedures.
- Performed a business and system analysis for CWT (2012-2014). This was for an integration project with VALE, the biggest CWT customer then, and several other projects related to Oracle ERP and business travel.
Technologies: MySQL, Python, PL/SQL, Oracle EBS, SQL, Microsoft Power BI, Microsoft SQL Server
BI and Analytics Lead (via Toptal)
2023 - 2023
Measured Analytics and Insurance, INC
- Engineered and executed a comprehensive ETL process using Microsoft SQL Server, enhancing data integration and accessibility for key business operations.
- Transformed complex datasets into actionable insights, streamlining data analysis processes and significantly improving operational efficiency.
- Developed multiple interactive dashboards using Microsoft Power BI, leveraging dataflows to provide near-to-real-time insights and drive data-driven decision-making.
Technologies: SQL, Microsoft Power BI, DAX, Power Query
Owner | Team Leader
2001 - 2008
Crissoft Consultoria
- Hired and managed a team of 12 for the client Ticket and Editora Abril. This team designed and developed all data conversion and interfacing routines between legacy systems and Oracle EBS (AP, AR, GL, OM, HR, Contracts, and TeleSales).
- Tailored and created a management solution that was fully integrated with Oracle GL for the client Editora Abril; was also responsible for evaluating company financial results.
- Planned and implemented the interface mechanism between Oracle and SQL Server (legacy platform) using Oracle Transparent Gateway for the client Ticket.
Technologies: PL/SQL, Oracle EBS, SQL
Oracle Consultant
1998 - 2001
Oracle do Brasil
- Developed most database technical migration scripts. This included the single instance project which consolidated 11 Latin America EBS instances (from several countries) into a single instance in the US.
- Contributed to the chart of accounts standardization projects in Latin America for the General Ledger module.
- Worked for a data migration team in the UK and was responsible for migrating internal Oracle EBS installations related to single instance projects.
Technologies: AP, Oracle EBS, SQL
Oracle EBS Consultant
1997 - 1998
Unilever
- Supported and developed custom routines for the Oracle General Ledger module.
- Upgraded Oracle EBS from version 10.5 to 10.7 which mitigated problems related to the millennium bug.
Technologies: PL/SQL, Oracle EBS General Ledger, Oracle EBS, SQL
Oracle Consultant
1995 - 1997
Unicanco (Bank Institution)
- Developed back-end routines to consolidate management information data and make it available for corporate managers.
Technologies: PL/SQL, Oracle, SQL
System Analyst
1994 - 1995
Companhia Paulista de Seguros
- Designed and implemented a functionality responsible for migrating insurance agents data between different branches/databases; this involved complex recursive database engine since the data model contained hundreds of tables.
Technologies: Shell Scripting, Oracle Forms, PL/SQL, Oracle, SQL
System Analyst
1992 - 1994
Banco Nacional
- Gathered business requirements, designed and developed a sales supporting module using PL/SQL and Oracle Forms.
- Maintained several modules related to a foreign trade platform using PL/SQL, Pro*C, and Oracle Forms.
Technologies: PL/SQL, Oracle, SQL
Experience
Sony WebSynopsis
https://spewebsynopsis.comThis is Sony's internal portal for partners, which provides information on programs (movies and series) and also the logic to perform local reporting to Ancine (the Brazilian regulatory entity for films).
Dashboard for Supermarket Refill Company
Created a dashboard in Power BI to display SKU sales per region using geolocation.
SKUs could be grouped into categories so that suppliers could use this data for marketing campaigns. According to the circle size on the map, for each SKU and category, it is possible to track the most selling items by region.
SKUs could be grouped into categories so that suppliers could use this data for marketing campaigns. According to the circle size on the map, for each SKU and category, it is possible to track the most selling items by region.
Dashboard for School Rankings
Built this dashboard, based on public data related to High School National Exam, ENEM (source INPEP), to display several types of school rankings.
Used by pedagogy's consulting team to improve each school, according to dashboard data.
Used by pedagogy's consulting team to improve each school, according to dashboard data.
Education
1992 - 1994
Bachelor's Degree in Computer Science
Mackenzie Presbyterian University - São Paulo, Brazil
Skills
Libraries/APIs
Pandas, NumPy
Tools
Oracle E-Business Suite (EBS), Microsoft Power BI, Oracle Forms, Oracle EBS General Ledger, Git, Jupyter, Terraform, Apache Airflow, Power Query
Languages
SQL, Python, Python 3
Storage
Oracle RDBMS, MySQL, MongoDB, PL/SQL, Microsoft SQL Server
Paradigms
ETL
Platforms
Apache Kafka, Oracle, Docker, Linux
Other
PL/SQL Tuning, Oracle EBS, AP, Shell Scripting, Performance Tuning, DAX
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