I seek roles building cloud-native data platforms with strong technical ownership, client collaboration, and scalable impact.
Reinaldo Duzanski Júnior
@reinaldoduzanski
Senior Data Engineer | Cloud Data Platforms (GCP, AWS, Snowflake, Databricks) | PySpark & Data Architecture
What I'm looking for
Senior Data Engineer with 7+ years building enterprise cloud data platforms on GCP and AWS. I design and implement scalable ETL pipelines (PySpark, Airflow, Databricks, Snowflake) that process millions of records daily, reduce cloud costs by 30–40%, and enable real-time analytics.
Recent highlights:
• Delivered a GCP platform serving 50+ analysts with medallion architecture (Bronze/Silver/Gold).
• Cut processing times from hours to minutes with optimized PySpark pipelines.
• Led audit data infrastructure that drove $2M+ in identified savings.
• Implemented real-time streaming for mission-critical dashboards.
Experienced in working with multicultural, global teams (USA, UK, India, China) and skilled at bridging the gap between engineering execution and business needs to deliver measurable results.
Experience
Work history, roles, and key accomplishments
Spearheaded design and implementation of a scalable GCP data platform and medallion data lake, leading ETL pipeline development with Dataproc and PySpark to improve data accessibility and streamline analytics workflows.
Senior Data Engineer
Gerdau
Jul 2022 - Mar 2024 (1 year 8 months)
Built and operated robust ETL pipelines to source and structure data from APIs and SAP tables, producing tailored reports and data marts that supported audit decision-making and analytics.
Machine Learning Engineer
ROIT
Sep 2021 - Jul 2022 (10 months)
Developed and deployed deep learning and ML solutions to automate accounting processes for Roit Bank, leading feature engineering, model training, and production deployments within an Agile team.
Acted as a liaison between clients and the bank to gather and analyze requirements, translating insights into product specifications that enabled tailored client solutions.
Java Back-End Developer
HSBC Global Technology Brazil
Mar 2013 - Jul 2015 (2 years 4 months)
Contributed to global backend software projects, collaborating with multicultural teams to deliver distributed systems and enterprise-grade services.
Java Full Stack Developer
Supremus Solutions
Jan 2011 - Dec 2011 (11 months)
Developed a commercial ERP system for small businesses, implementing modules for cash flow and inventory management to improve operational control for entrepreneurs.
Education
Degrees, certifications, and relevant coursework
Reinaldo hasn't added their education
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