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JanTeske06/README.md

Hi, I'm Jan! 👋

Founder of Teske Systemtechnik | Senior Python Engineer

I specialize in rescuing, optimizing, and automating business-critical systems for enterprise clients. I don't just write scripts. I build reliable, strictly typed engineering solutions that reduce cloud costs, automate complex workflows, and handle deep legacy data.


Track Record & Focus

I believe in proving skills through measurable business impact, not just theory.

  • Enterprise Automation: Building zero-downtime, fail-safe data acquisition pipelines (Playwright).
  • Cloud Optimization: Auditing and downscaling AWS/Kubernetes infrastructure (proven 75% cost reduction).
  • Deep Data & Legacy Systems: Reverse engineering outdated backends (ODBC/SQL) and parsing complex structures (AST, Binary/Hex, messy APIs).
  • Engineering Standard: 100% Type Hinting, modular architecture, and rigorous pytest coverage.

(20+ successfully completed enterprise projects, delivered under direct B2B contracts)


Core Tech Stack

  • Languages & Core: Python 3.x (Expert), SQL, CLI Architecture
  • Automation & Scraping: Playwright, Advanced ETL Pipelines
  • Cloud & DevOps: AWS, Kubernetes, System Architecture
  • Data Engineering: Pandas, Regex, Binary/Hex Parsing, API Integration

Let's Connect

If you are looking for an engineer who values correctness over shortcuts and delivers predictable ROI, let's talk.

Pinned Loading

  1. math_engine math_engine Public

    A secure, AST-based mathematical expression evaluator that prevents code injection (RCE) by avoiding Python's unsafe eval() function.

    Python 1

  2. teske-systemtechnik teske-systemtechnik Public

    HTML