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Languages

  • Hungarian - native
  • Italian - B2
  • English - C1



Skills

  • Git & GitHub
  • PostgreSQL
  • Data Warehouse
  • ETL/ELT
  • Power BI, DAX
  • AWS, ec2, s3, Glue
  • Redshift, RDS/Aurora
  • DQ, TestRail, Jira
  • CI/CD, Jenkins, Docker


Contact

Address:

Budapest, Hungary

Phone:

+3630 440 5018

Email:

balazsarva1982@gmail.com

Email me

Profile

About Me

I am a dedicated Data Engineer, currently seeking a Junior Data /Integration/Visualization/Quality Engineer position. My background has strengthened my discipline, adaptability, and problem-solving skills. I am passionate about building reliable data systems and continuously improving my knowledge through real-world projects and collaboration.

Qualification

  • Master Degree - University of Technology and Economics - 2007

Projects and code snippets

Stock prices Cancer prediction OkCupid Delivery mob app Rock-paper-scissors Ciphers Blackjack Beat Mix

Working Experience

  • Oct 2025 – June 2026: EPAM Systems (Data Engineering Program)
    Focused on PostgreSQL (DDL/DML/DCL/TCL) and advanced data warehouse concepts. Built a DWH project following the Inmon approach (3NF core + data mart layers), covering database modeling, ETL concepts, and initial/incremental loading. Worked with performance and consistency topics (indexing, VACUUM, MVCC, isolation levels) and implemented database objects such as functions/procedures, cursors, and partitioning.
    Gained hands-on experience with AWS services: launched and managed EC2 instances, used S3 for data storage and transfer, and performed data ingestion and transformation with AWS Glue and Glue Catalog. Executed complex SQL queries in Athena, Aurora, and Redshift, and migrated data from S3 to Redshift via Glue pipelines. Configured Bastion Host for secure Redshift access. Developed and automated ETL/ELT processes, and worked with data quality, monitoring, and reporting using Power BI. Supplemented with Python scripting for automation and data processing.
  • 2023 – 2025: Full-time Student & Courier
    Dedicated myself to full-time studies in Python development, software engineering, and data science. Alongside my studies, I worked as a courier, which helped me further develop my time management, reliability, and problem-solving skills.
  • 2019 – 2023: Courier
    Worked as a courier, where I developed strong organizational skills, resilience, and the ability to adapt quickly to changing situations.
  • 2014 – 2017: Sales Manager, CNW Rendszerintegracios Zrt.
    Managed IT hardware and software sales for existing partners. Built and maintained client relationships, negotiated contracts.
  • 2011 – 2014: Sales Manager, ICT Europe Finance Zrt.
    Proactively participated in developing the company’s sales processes. Signed 15+ cooperation agreements for accounting and tax advisory services.