Mihai Vîrză

Data Engineer at Self-employed

Led the data layer for an AI-driven product, designing and implementing a Medallion architecture for both structured and unstructured data. Built scalable data pipelines in Azure Databricks with PostgreSQL integration, developed ingestion frameworks, managed vector databases for AI workflows, and implemented automated CI/CD pipelines. Architected production-grade data environments focusing on performance, security, and scalability, and contributed to AI model data preparation and feature engineering.

ETL DevOps Engineer at ING Bank

Part of a scrum squad (6-8 people) delivering in 3-week sprints. Built a Data Lake using IBM Infosphere Suite (Datastage, Administrator) with Oracle databases. Responsibilities included data analysis and physical modeling, maintaining versioning models, developing data products for mortgages, monitoring production flows, solving production incidents, onboarding new data, SDLC involvement, and Azure deployments; contributed to Oracle performance improvements in small groups.

ETL Datawarehouse Developer at Societe Generale

Developed ETL jobs to feed the Datawarehouse, ensured development and bug fixing, participated in acceptance testing and validation, worked in an Agile/Scrum team, ensured architectural and operational standards, maintained evolutive and corrective maintenance, and designed data warehouse processes using IBM Datastage; performed query tuning and wrote triggers, procedures, functions, and packages.

ETL Datawarehouse Developer at Coface Technologies

Designed and engineered high-performing, scalable enterprise data warehouses and datamarts; responsible for data warehouse design, build, migration, and ETL using IBM Datastage; integrated MongoDB with Datastage workflows; created DEV/TEST environments; defined data mappings and transformations; maintained data models and data quality; participated in SDLC and code reviews.

Oracle Developer at Deutsche Bank

Developed an anti-money laundering application using Oracle and SAS technologies; optimized database performance through query tuning and high-cost SQL reduction; collaborated with BAs and DBAs; utilized SAS Management Console and SAS Enterprise Guide for data management and reporting; conducted code reviews to ensure quality and reliability.

Support Software Engineer at Inter Data ABS

Delivered testing and technical support for strategic software projects; designed testing strategies (test plans, cases, automated scripts); supported CI processes; served as primary technical contact for two strategic customer accounts; conducted trainings and provided consultancy; performed patch and release management and database maintenance including PL/SQL optimization.