Hi, I'm Rafael Ignaulin
Data Engineer
Data Engineer with 5 years of experience delivering measurable impact at global leaders like Nike and Inter&Co. Proven track record of building and optimizing data platforms that reduced processing times by orders of magnitude, unlocked real-time analytics, and empowered business teams to make faster, data-driven decisions.
About Me
Data Engineer with 5 years of experience delivering measurable impact at global leaders like Nike and Inter&Co. Proven track record of building and optimizing data platforms that reduced processing times by orders of magnitude, unlocked real-time analytics, and empowered business teams to make faster, data-driven decisions. Holder of 13+ certifications recognizing technical excellence and business impact.
Education
Bachelor in Computer Science
Unochapecó
2020 - 2023
Student honor medal: Average best grades for computer science during the entire course in 2023.
Languages
English: C2 (Proficient)
Portuguese: Native
Key Achievements
- ✓Optimized multi-terabyte scale pipelines, reduced Spark jobs execution time by 95%
- ✓Led data projects impacting 40MM+ customers
- ✓Improved end-to-end measurement time from weeks to minutes
- ✓Created data products generating dashboards with trillion+ filter combinations
- ✓Migrated data platforms to modern cloud architectures
Professional Experience
Senior Data Engineer
Nike
Jan 2024 - Present
- •Leading a data project to dynamically measure new Nike app features. Created a multi-dimensional, scalable data product that can handle multiple analytics use cases in a centralized structure.
- •Developed a complex automation process to measure multiple AB Tests efficiently. Improved end-to-end measurement time from weeks to minutes.
- •Optimized multi-terabyte scale pipelines, reduced Spark jobs execution time by 95%, leveraging advanced internal Spark concepts.
- •Created a data product that can generate dashboards with more than a trillion combinations of filters, by using advanced array data structures permutations. Used in combination with AI Agents in the consuming layer.
- •Migrated a data platform from hybrid cloud to Databricks, following best practices in the new Lakehouse platform, ensuring reliability and flexibility for the engineering team.
Data Engineer Lead
Inter & Co
Jan 2023 - Present
- •Leading a data project and a team of multiple members with impact to more than 40MM customers, by generating custom customer segmentation based on multiple metrics from different data sources.
- •Real Time analytics project using Spark on K8s and with custom integration to Kafka and DynamoDB.
Data Engineer
PagSeguro/PagBank
2020 - 2023
- •Built and maintained data pipelines processing millions of transactions daily
- •Implemented data quality frameworks ensuring high reliability standards
- •Collaborated with cross-functional teams to deliver data-driven insights
Featured Projects
A selection of impactful data engineering projects I've led and contributed to at Nike, Inter&Co, and other organizations.
Dynamic Nike App Feature Measurement
Nike
Created a multi-dimensional, scalable data product that can handle multiple analytics use cases in a centralized structure for measuring new Nike app features.
Impact: Enabled real-time measurement of app features with centralized analytics
AB Test Automation Platform
Nike
Developed a complex automation process to measure multiple AB Tests efficiently, reducing measurement time dramatically.
Impact: Improved end-to-end measurement time from weeks to minutes
Multi-Terabyte Pipeline Optimization
Nike
Optimized multi-terabyte scale pipelines using advanced Spark concepts and best practices.
Impact: Reduced Spark jobs execution time by 95%
Trillion-Combination Dashboard System
Nike
Created a data product that can generate dashboards with more than a trillion combinations of filters using advanced array data structures permutations, integrated with AI Agents.
Impact: Enabled unprecedented dashboard flexibility with AI-powered insights
Cloud Migration to Databricks
Nike
Migrated a data platform from hybrid cloud to Databricks, following best practices in the new Lakehouse platform.
Impact: Improved reliability and flexibility for the engineering team
40MM+ Customer Segmentation Platform
Inter & Co
Leading a data project and team generating custom customer segmentation based on multiple metrics from different data sources, impacting 40MM+ customers.
Impact: Enabled personalized experiences for 40MM+ customers
Real-Time Analytics on Kubernetes
Inter & Co
Real-time analytics project using Spark on K8s with custom integration to Kafka and DynamoDB.
Impact: Enabled real-time analytics for business-critical decisions
Technical Skills
Comprehensive expertise across the modern data engineering stack, from distributed processing to cloud infrastructure.
Programming Languages
Data Processing
Orchestration
Streaming & Messaging
Cloud Platforms
Infrastructure as Code
BI & Visualization
The Value I Bring
What sets me apart as a data engineer and the value I bring to organizations.
Performance Optimization
Reduced processing times by 95% through advanced optimization techniques and deep understanding of distributed systems.
Scalability & Architecture
Designed and built systems handling trillions of data combinations and millions of daily events with high reliability.
Leadership & Team Impact
Led cross-functional teams and data projects impacting 40MM+ customers, driving measurable business outcomes.
Modern Cloud Expertise
Expert in cloud migrations, modern data architectures (Lakehouse), and infrastructure-as-code practices.
Real-Time Capabilities
Built real-time analytics platforms enabling faster, data-driven decision making for business teams.
Certified Excellence
Holder of 13+ professional certifications across AWS, Databricks, Azure, and Oracle, demonstrating commitment to continuous learning.
isTech
Freelancing & Data Solutions
Providing expert data engineering services, cloud solutions, and consulting for businesses looking to leverage their data effectively.
Visit isTech →Data Engineering
Design and build scalable data pipelines, ETL processes, and data warehouses.
Cloud Solutions
AWS, Azure, and Databricks implementations and migrations with best practices.
Consulting
Data strategy, architecture design, and technical leadership for data teams.
Freelancing
Flexible engagement models for short-term projects and ongoing support.
Why Choose isTech?
Expert in modern data stack (Spark, Databricks, Kafka, Airflow)
13+ professional certifications (AWS, Databricks, Azure)
Proven track record at Fortune 500 companies
End-to-end data solutions from design to implementation
Certifications & Credentials
12 professional certifications demonstrating commitment to continuous learning and technical excellence across cloud platforms and data technologies.
Apache Airflow
Astronomer Certification DAG Authoring for Apache Airflow 3
Astronomer
Astronomer Certification for Apache Airflow 2 Fundamentals
Astronomer
AWS
AWS Certified Cloud Practitioner
Amazon Web Services Training and Certification
AWS Certified Solutions Architect – Associate
Amazon Web Services Training and Certification
AWS Certified Solutions Architect – Professional
Amazon Web Services Training and Certification
AWS Partner: Accreditation (Business)
Amazon Web Services Training and Certification
AWS Partner: Technical Accredited - Training Badge
Amazon Web Services Training and Certification
AWS Data Engineer Associate
Amazon Web Services Training and Certification
Azure
AZ-305: Designing Microsoft Azure Infrastructure Solutions
Microsoft
Databricks
Databricks Data Engineer Professional
Databricks
Oracle
Oracle Infrastructure Foundations Associate
Oracle
Oracle Cloud Data Management Foundations
Oracle
Global Perspective
Passionate traveler who has explored 10 countries across Europe, bringing a global perspective and cultural awareness to my work. Travel has cultivated strong communication skills, adaptability, and the ability to work effectively in diverse, remote teams.
Let's Connect
Interested in discussing data engineering, collaboration opportunities, or just want to chat? Feel free to reach out.