I build automation tools, API integrations, and data-intensive backends with a focus on reliability, performance, and maintainability.
My work spans enterprise system integration, ETL pipelines, and analytical tooling — always with clean and pragmatic engineering.
Universal REST-to-REST bridge with mapping, transformations, pagination, secret providers, scheduling, retry logic with DLQ, and OTel/Prometheus observability.
Repo: https://github.com/kkartas/APILinker
Schema-driven synthetic data generator + CSV/Excel validator with constraints, reports, CLI, benchmarks, and CI.
Repo: https://github.com/kkartas/ETLForge
Source-agnostic toolkit for meteorological time-series ingestion, QC, derived metrics, and ML-ready preprocessing, with optional NetCDF export.
Repo: https://github.com/kkartas/MetDataPy
Flask web app with SMA/RSI/MACD, support/resistance detection, DCA calculator, volatility indicators, fundamentals, earnings, and live market data via yfinance.
Repo: https://github.com/kkartas/Investment-Analysis-Tool
Python utilities for ERP → WooCommerce / OpenCart integration.
WooCommerce → https://github.com/kkartas/Galaxy2Woocommerce
OpenCart → https://github.com/kkartas/Galaxy2Opencart
📧 mail@kkartas.gr
🌐 https://www.kkartas.gr
🔗 https://www.linkedin.com/in/kkartas