Kulcsár Balázs
Senior Database Engineer
Budapest Metropolitan Area Hungary
Summary
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RockstarKulcsár Balázs is a Senior Database Engineer with over 20 years in software development, DevOps and sysadmin roles, and more than a decade focused on PostgreSQL and high-volume production systems. Based in Budapest, he designs and operates resilient AWS RDS/Aurora and on-prem clusters, leads major database migrations and upgrades, and has built custom tools such as a vacuum scheduler and a CloudWatch-driven log analysis platform to meet strict SLAs. His background spans FinTech data engineering—contributing to Alpaca’s marketstore integrations—and end-to-end machine learning trading systems, giving him a rare blend of deep database internals, performance tuning and data-pipeline experience. Socialized in the startup scene, he combines independent problem-solving with architectural leadership, often introducing high-impact changes like zero-downtime RDS→Aurora migrations and Liquibase adoption.
11 years of coding experience
17 years of employment as a software developer
English, Hungarian
Github Skills (8)
data-ingestion10
json10
go10
caching8
database7
databases7
golang6
trading6
Programming languages (1)
Github contributions (5)
alpacahq/marketstore
Oct 2020 - Nov 2020
DataFrame Server for Financial Timeseries Data
Role in this project:
Back-end Developer
Back-end DeveloperContributions:29 reviews, 31 commits, 6 PRs in 1 month
Contributions summary:Kulcsár primarily contributed to the `contrib/polygon` directory, focusing on data ingestion and processing for financial timeseries data. Their work involved implementing functionality to dump JSON replies from the Polygon API and integrating features for backfilling trades and quotes. The user also made changes to the `api` package, including the ability to read data from a cache, demonstrating involvement in both data retrieval and storage strategies. Overall, their contributions were centered around enhancing the data pipeline and integration with external financial data sources.
pythonhuobifinancial-analysisforex-tradingfinancial-timeseries-data
alpacahq/balages_stuff
Sep 2020 - Oct 2020
Contributions:3 pushes, 1 branch in 21 days
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