Renato AragónSenior Data Engineer & Data Architect
Azure Databricks · AWS · PySpark · Python · SQL · GenAI
Senior Data Engineer, Data Architect and Technical Lead with 14+ years designing enterprise data platforms, ETL/ELT pipelines, and cloud-native architectures in regulated and high-volume environments. Hands-on engineer who also takes on product ownership, data governance and alignment with business teams and executive stakeholders, across architecture, automation and analytics. Founder of several SaaS products in production in Brazil and Portugal.
Legal resident in Portugal · Available for B2B & employment contracts · EU
Contact
Results
What I actually deliver
Monthly billing reconciliation
Before
12 days
After
Real-time dashboard
Partner onboarding signature
Before
8 hours / signature
After
8 seconds
Internal report generation
Before
2 business days
After
Under 2 minutes
Daily tax authority emails
Before
1,500+ reviewed manually
After
Automated ingestion + tracking
Revenue data visibility
Before
No real-time financial data
After
Live P&L + payroll + ledger
Technical
Core Expertise
Architecture
Cloud-native Data Platforms · Lakehouse · Distributed Processing · Platform ModernizationLeadership
Technical Lead · Product Ownership · Architecture Decisions · Cross-functional AlignmentCloud Platforms
Azure Databricks · Azure Data Factory · Azure DevOps · AWS Glue · EMR · Athena · S3 · Lambda · Step Functions · RDS · OCIData Engineering
PySpark · Python · pandas · SQL · Apache Iceberg · ETL/ELT · Lakehouse · Incremental ProcessingBackend & Integration
Python · PostgreSQL · Next.js · REST APIs · HubSpot API · Microsoft Graph · GenAIInfrastructure
Terraform · Docker · CI/CD · Azure DevOps · GitHub ActionsGovernance & Ops
Data Quality · Lineage · Deduplication · Schema Evolution · DashboardsDatabases
PostgreSQL · MySQL · SQL ServerWork history
Experience
Hiscox
(via B2B Contract)OngoingJun 2026 to PresentSenior Data Engineer
- Enterprise data engineering in an international, regulated insurance environment.
- Build and modernise reliable data solutions with Azure Databricks, Azure Data Factory, PySpark, Python, pandas and SQL Server.
- Deliver through Azure DevOps with a strong focus on data quality, maintainability, evidence-based validation and controlled releases.
Aragón Dataguard
Ongoing2013 to PresentFounder, Lead Data Engineer & Data Architect
- Designed cloud-native data platforms and automation systems for clients across Brazil and Portugal, translating operational requirements into scalable technical solutions.
- Led end-to-end technical delivery: architecture, ETL design, cloud infrastructure, and client-facing stakeholder alignment.
- Also built and operates a portfolio of proprietary SaaS products in production: PsycoHub (digital practice for psychologists), NutriPro (nutritionists), Sola Beauty (beauty professionals), Dockly (agency project management), and LaboraHub (talent marketplace for Portugal & Spain).
- Stack: Python · PostgreSQL · AWS · Next.js · AI integrations.
BMW Group
(via B2B Contract)2024 to 2026Senior Data Engineer
- Owned the ingestion into the BMW Cloud Data Hub (CDH), building and running PySpark jobs on AWS Glue and EMR.
- Implemented complex PySpark transformation layers for large-scale automotive and operational datasets.
- Contributed to a cloud migration from OCI to AWS, mapping Oracle Cloud Infrastructure services to their AWS equivalents (Object Storage → S3, Data Flow → Glue/EMR, Autonomous Data Warehouse → Athena) and re-platforming the associated pipelines.
- Applied Apache Iceberg transactional patterns: upserts, schema evolution, and time travel.
- Supported scalable infrastructure patterns using Terraform and cloud-native orchestration.
- Collaborated within regulated enterprise environments with governance and analytics stakeholders.
AG Capital Group
(via B2B Contract)Oct 2023 to Feb 2026Coordinator
- Led evolution of centralized analytics and operational platform across 14+ integrated systems, 8 business units, and 324 daily users.
- Architected ETL pipelines integrating financial systems, CRM (HubSpot API), fiscal authorities (Receita Federal), and Microsoft Graph.
- Led the full migration of the AWS-based data lake to OCI (Oracle Cloud Infrastructure), re-architecting storage, ingestion, and processing layers with no disruption to daily operations.
- Developed governance mechanisms: audit layers, deduplication strategies, real-time P&L integrated with accounting ledger and payroll.
- Reduced operational effort by over 40% through platform modernization, cloud-native automation, and GenAI integration for commercial teams.
- Acted as Technical Lead, Coordinator and architecture reference: coordinated cross-functional teams across engineering, analytics and business units, mentored engineers and pushed the business units to decide with data.
Bachelor's in Business Administration · UDESC (Universidade do Estado de Santa Catarina), BrazilPostgraduate in Big Data & Analytics · UNISUL, Brazil (in progress, 2024-2026)Portuguese: Native · English: C1 · Spanish: IntermediateLegal resident in Portugal, authorized to work in Portugal and the European Union under B2B or employment contracts.
Social proof
What colleagues say
“Renato has an exceptional ability to manage conflicts and deliver high-quality solutions under challenging deadlines. His rational approach was fundamental for communication between the technical and business teams. An exceptionally talented and dedicated professional whose skills were invaluable to the success of our projects.”
Carlos Henrique Oliveira
Software Engineer · Itaú Unibanco
“Renato has the gift of empowering his team to perform and realize their potential. He is always attentive to the team's wellbeing and ready to help. I had the opportunity to learn a lot about strategic management thanks to his immense analytical vision and ease of communication.”
Gabriel Ratão
Data Engineer | Spark | Big Data
“Renato is a reference in leadership, with a sharp eye for company strategy, without losing his human perspective for each person on the team. He always motivates team members to find solutions to daily challenges while providing support and knowledge to overcome them.”
Carlos Escanhoela Júnior, Ph.D.
Data Analyst | Power BI | Python | BI
“Renato quickly becomes part of the brain of the company and supports critical and fundamental decisions for business success. A professional with enormous technical capacity, vast experience across different business perspectives, who leads a team with great empathy and performance.”
Mario Hidetatsu
Network Engineer | DevOps | SecOps
“Renato has an exceptional ability to manage conflicts and deliver high-quality solutions under challenging deadlines. His rational approach was fundamental for communication between the technical and business teams. An exceptionally talented and dedicated professional whose skills were invaluable to the success of our projects.”
Carlos Henrique Oliveira
Software Engineer · Itaú Unibanco
“Renato has the gift of empowering his team to perform and realize their potential. He is always attentive to the team's wellbeing and ready to help. I had the opportunity to learn a lot about strategic management thanks to his immense analytical vision and ease of communication.”
Gabriel Ratão
Data Engineer | Spark | Big Data
“Renato is a reference in leadership, with a sharp eye for company strategy, without losing his human perspective for each person on the team. He always motivates team members to find solutions to daily challenges while providing support and knowledge to overcome them.”
Carlos Escanhoela Júnior, Ph.D.
Data Analyst | Power BI | Python | BI
“Renato quickly becomes part of the brain of the company and supports critical and fundamental decisions for business success. A professional with enormous technical capacity, vast experience across different business perspectives, who leads a team with great empathy and performance.”
Mario Hidetatsu
Network Engineer | DevOps | SecOps
Let's work together
“You've seen what I build, for clients and for myself. Let's talk about what I can build for you.”
I'm available for remote B2B contracts across the EU. If you're building or modernising a data platform, reach out directly.