Jânio Ribeiro
Senior Data QA Engineer | Data Engineer
Salvador,BA
Summary
Senior Data QA & Data Engineer with over 17 years of experience delivering scalable, reliable, and high-performance data solutions across complex enterprise environments. Strong background in Data Quality Engineering, QA Automation, and large-scale data processing, working with global teams in healthcare, maritime logistics, media, public sector, and e-commerce. Proven track record of measurable impact. Designed and optimized high-volume ingestion and validation pipelines in Databricks (Python / PySpark), reducing processing time from 16 hours to 45 minutes. Built proactive API validation mechanisms for government healthcare systems, detecting undocumented structural changes in real time and preventing critical production failures. Core technical stack: Azure Databricks, Azure Data Factory, PySpark, SQL, Delta Lake, Great Expectations, Salesforce & SFMC APIs, REST/SOAP testing, Selenium (.NET), RestAssured (Java), Cypress, CI/CD with Azure DevOps, Jenkins, and GitHub. Strong experience in ETL validation, data migration, pipeline testing, and cloud-based architectures. International mindset and collaboration-driven professional. Known for reliability, ownership, and clear communication with both technical and business stakeholders. Holder of a valid US B1/ B2 visa, open to global collaborations, remote roles, or onsite engagements.
Overview
19
19
years of professional experience
1
1
Certification
Work History
Data QA Specialist | Data Engineer
B. J. V. Tecnologia, Construção
11.2023 - Current
- Responsible for ensuring data integrity, reliability, and scalability across enterprise-grade data platforms, acting in a hybrid Data Quality Engineering and Data Engineering role within global, high-volume environments.
- Key achievements and responsibilities:
- Designed, built, and optimized end-to-end data pipelines using Azure Data Factory and Databricks (Python / PySpark), processing hundreds of millions of records across Azure Data Lake, Unity Catalog, and Oracle.
- Automated data quality validations with Great Expectations and PySpark, covering schema checks, null constraints, deduplication, and business rules, significantly improve validation consistency and reduce manual effort.
- Implemented performance and scalability optimizations, including incremental loading, deduplication strategies, and efficient partitioning, ensuring reliable execution of large-scale pipelines.
- Integrated and validated external APIs, including Salesforce Marketing Cloud (SFMC) and Adobe Analytics, guarantee accurate and compliant data ingestion and exchange.
- Collaborated closely with global data engineers, analytics teams, and business stakeholders, ensuring data solutions aligned with business rules, regulatory requirements, and reporting needs.
- Through this combined role, I consistently deliver end-to-end, production-ready data solutions, balancing robust data quality practices with scalable data engineering architectures that generate real business impact.
Data QA Engineer
Avenue Code
05.2023 - 05.2025
- Ensured data integrity, reliability, and consistency across enterprise-scale data pipelines, supporting analytics and business-critical decision-making in complex cloud environments.
- Key achievements and responsibilities:
- Validated large-scale data platforms using Databricks, Azure Data Lake, Azure SQL, and Unity Catalog, ensuring accuracy across data lakehouse and BI layers.
- Automated data quality checks with Great Expectations, Python, and PySpark, improving validation efficiency, consistency, and reusability.
- Executed data migration and data warehouse validations, including scenario-based testing to guarantee correctness in high-impact business domains.
- Partnered with data engineers and business stakeholders to enforce business rules, data contracts, and regulatory constraints.
- Validated integrations with Salesforce Marketing Cloud (SFMC), ensuring reliable and accurate data exchange across systems.
- This role strengthened my ability to deliver robust, business-aligned data quality solutions in complex, high-volume environments.
Data QA and Sr QA Engineer
CI&T
07.2022 - 05.2023
- Contributed as a hybrid Data Quality Engineer and QA Engineer, supporting enterprise projects involving ETL validation, data migration, and application testing across distributed, cloud-based systems.
- Key achievements and responsibilities:
- Validated data pipelines and ETL processes, ensuring data accuracy, completeness, and compliance with business rules across multiple sources and systems.
- Designed and executed test plans and test cases, covering regression, exploratory, smoke, and scenario-based testing for complex applications.
- Collaborated closely with development teams on debugging, issue triage, and definition of test strategies aligned with system architecture and data flows.
- Defined and improved QA processes, promoting test automation, CI/CD integration, and quality-driven agile delivery.
- Analyzed test results and provided actionable feedback, contributing to faster release cycles and higher software reliability.
- Technologies & tools:
- Databases & Data: PostgreSQL (PgAdmin), Kafka, Kibana
- Automation: Webdriver.io, Cypress, SpecFlow
- CI/CD & Collaboration: Azure DevOps, Jenkins, GitHub, Bitbucket, Jira (Xray), Docker, Slack, Microsoft Teams
- This role strengthened my ability to embed quality into agile, cross-functional environments, bridging data validation and application testing while working with global teams.
Senior QA Engineer
FSA Soluções Tecnológicas Aplicadas
04.2021 - 03.2023
- Played a key role in ensuring the quality of web and desktop applications, contributing to the establishment and continuous improvement of QA practices across the software development lifecycle.
- Key achievements and responsibilities:
- Designed and executed comprehensive test plans, performing both manual and automated testing to ensure functional stability and system reliability.
- Led test automation initiatives, increasing test coverage and significantly reducing regression cycles.
- Defined and improved QA processes and workflows, embedding quality standards across development teams.
- Analyzed test results and provided actionable feedback to developers and stakeholders, accelerating issue resolution and improving release quality.
- Validated APIs and services, ensuring reliability and correctness across REST and SOAP integrations.
- Technologies & tools:
- API & Services: REST, SOAP, Postman, SoapUI
- DevOps & CI: Azure DevOps, Jenkins, Git, GitHub
- This role strengthened my ability to drive scalable QA strategies, mentor teams, and deliver high-quality software in complex, enterprise environments.
Quality engineering
INR Tecnologia da Informação
10.2018 - 03.2021
- Played a key role in ensuring the reliability and stability of mission-critical healthcare systems used by hospitals across Brazil.
- Key achievements and responsibilities:
- Designed and implemented an automated monitoring solution for the Brazilian Ministry of Health’s SOAP-based API, performing daily structural and schema validations.
- Detected undocumented API changes in real time, preventing system failures and ensuring continuity of essential hospital operations.
- Enabled proactive incident response, significantly improving system stability and operational readiness in highly regulated healthcare environments.
- Executed comprehensive test strategies including regression, exploratory, heuristic, empirical, and performance testing for web and integration systems.
- Led QA process improvements and test automation initiatives, strengthening QA standards, efficiency, and quality culture across teams.
- Technologies & tools:
- C#, Selenium, Java, Cucumber, REST & SOAP Web Services, RestAssured, MySQL, Postman, Jenkins, Azure DevOps, Git/GitLab, Maven, JUnit, IntelliJ IDEA, Jira, Slack
- This role reinforced my ability to deliver proactive quality solutions in high-risk environments, where system reliability directly impacts healthcare operations and patient services.
Quality Assurance / Quality Control
CADIC Brasil Geoprocessamento
12.2012 - 10.2018
- Contributed to quality assurance and data control activities supporting projects related to data collection, geoprocessing, and operational reporting.
- Key achievements and responsibilities:
- Defined and executed test plans and test cases for desktop applications and REST APIs, with strong focus on manual testing and functional validation.
- Validated data accuracy and consistency, performing data analysis, extraction, and reporting using SQL Server scripts.
- Supported project coordination and monitoring, including delivery tracking and follow-up reporting.
- Handled and validated data collected via proprietary GIS tools, ensuring data completeness and usability for business reporting.
- Provided operational support for database and server environments, including Microsoft SQL Server administration and Windows Server backup routines.
- Technologies & tools:
- Microsoft SQL Server 2008 R2 / 2012 R2, REST APIs, GIS tools, Windows Server 2008 R2 / 2012, SQL scripting
- This role built a strong foundation in quality control, data validation, and operational reliability, supporting my career development in Quality Engineering and Data Quality.
Systems Analyst
CompNet
03.2011 - 11.2012
- Worked as a Developer and Systems Analyst supporting public safety and police management systems, combining software development, data modeling, BI solutions, and system administration.
- Key achievements and responsibilities:
- Analyzed and developed police management systems, supporting operational and strategic decision-making for public safety organizations.
- Designed and implemented Business Intelligence solutions using Microsoft SQL Server Analysis Services (SSAS) and Integration Services (SSIS).
- Modeled databases and data warehouses, ensuring data consistency, performance, and scalability.
- Administered SQL Server databases and Windows Server environments, supporting system availability and data reliability.
- Represented the company at national and international public safety events (e.g., Interseg), presenting data collection and sampling applications to senior public safety officials.
- Defined and executed test plans and test cases for desktop applications and REST/SOAP APIs, ensuring system quality and reliability.
- Technologies & tools:
- Microsoft SQL Server 2008 R2, SSIS, SSAS, Windows Server 2003 / 2008 R2, Java, REST & SOAP APIs
- This role provided a strong foundation in systems analysis, data architecture, and enterprise-quality practices within highly regulated public-sector environments.
Systems Analyst
WBS
05.2007 - 03.2011
- Started my career as a Developer and Systems Analyst, building a strong foundation in system analysis, software development, data integration, and enterprise application support.
- Key responsibilities and contributions:
- Analyzed business requirements and designed systems, contributing to application architecture and technical documentation.
- Developed applications using .NET (C#, ASP.NET) with Microsoft SQL Server and Oracle databases.
- Participated in the design and development of project management and feasibility systems, including WBSNet and EVTE platforms aligned with PMI best practices.
- Supported system integrations with SAP, Microsoft Project, and Primavera, working with SQL Server and Oracle databases.
- Executed application testing and quality validation, ensuring functional stability and data consistency.
- Developed reports and dashboards using Crystal Reports to support project and financial analysis.
- Technologies & tools:
- C#, ASP.NET (.NET Framework 1.1 / 2.0), Microsoft SQL Server 2000/2005, Oracle 9i XE / 10g, SAP (integration), Crystal Reports
- This experience established my technical and analytical foundation, enabling my long-term growth into Quality Engineering, Data Quality, and Data Engineering roles.
Education
Bacharel em Sistemas de Informação - Information Technology
Universidade Estácio De Sá
Salvador, Bahia, Brazil06-2009
Bacharelado em Engenharia - Engenharia Civil
Estácio
Salvador, Bahia, Brazil12.2021
MBA em GESTÃO DA TECNOLOGIA DA INFORMAÇÃO - Administração e Gerenciamento de Computação/Tecnologia da Informação
Universidade Salvador
Salvador, Bahia, Brazil12.2019
Skills
- Azure (Databricks, Data Factory, Data Lake)
- Salesforce
- ETL
- Data Validation
- Data Integration
- Data Engineer
- Data QA Engineer
- Data Analysis
- Software Engineers
- C# Developer
- API Integration
Certification
- Como Melhorar
- Foco
- Introdução à Ciência de Dados: Conceitos Básicos
- Lean Six Sigma Foundations
Languages
English (Professional Working)
Portuguese (Native or Bilingual)
Spanish (Professional Working)
Accomplishments
- Collaborated with a team of 10 in the development of the Maritime Transportation Sector.
Timeline
Data QA Specialist | Data Engineer
B. J. V. Tecnologia, Construção
11.2023 - Current
Data QA Engineer
Avenue Code
05.2023 - 05.2025
Data QA and Sr QA Engineer
CI&T
07.2022 - 05.2023
Senior QA Engineer
FSA Soluções Tecnológicas Aplicadas
04.2021 - 03.2023
Quality engineering
INR Tecnologia da Informação
10.2018 - 03.2021
Quality Assurance / Quality Control
CADIC Brasil Geoprocessamento
12.2012 - 10.2018
Systems Analyst
CompNet
03.2011 - 11.2012
Systems Analyst
WBS
05.2007 - 03.2011
Bacharel em Sistemas de Informação - Information Technology
Universidade Estácio De Sá
Bacharelado em Engenharia - Engenharia Civil
Estácio
MBA em GESTÃO DA TECNOLOGIA DA INFORMAÇÃO - Administração e Gerenciamento de Computação/Tecnologia da Informação
Universidade Salvador