Global Maksimum – Data Engineer
May 2022 – July 2024 | Istanbul, Turkey
Provided consulting services to four companies across three different industries.
Trendyol-Ali Express (E-commerce):
- Created and delivered 100+ comprehensive reports daily utilized by domestic and global finance teams.
- Ensured timely and accurate delivery of ad-hoc information requests from diverse departments.
- Led a team of six as the most senior member on the project.
- Supplied financial data to over a dozen departments.
- Technologies: GCP BigQuery, Azkaban, Airflow, GitLab, Jira, Looker, Tableau.
BELBIM (E-payment):
- Provided precise reporting for a company with 20 million users, addressing cross-functional business inquiries.
- Established new report flows aligned with business needs.
- Led a complete overhaul of the company's Jira reporting system.
- Technologies: MS SQL, Azkaban, Vertica, DB Management Tool, Tableau.
BIST (Stock Market):
- Collaborated with Turkey's primary stock exchange, Borsa Istanbul.
- Analyzed streaming data and supported data warehousing needs.
- Technologies: FlinkSQL, Vertica, Henkan ETL Tool.
IsteGelsin (E-commerce):
- Accelerated the transformation of reporting infrastructure from AWS to a Vertica system.
- Reduced AWS costs by over 30% by migrating part of the workload to on-prem systems.
- Technologies: DynamoDB, Kafka, Azkaban, Vertica.