Tools, ideas and data in one place

Practical software for
technical work.

I build Python applications, data pipelines and AI-assisted workflows that make complex technical processes faster, clearer and easier to operate.

End-to-endFrom requirement to working application
Hands-onTechnical field and laboratory experience
AI-enabledDaily agentic development workflow
Outcome-ledAutomation that removes repetitive work

How I structure AI work

Example of a small,
controlled workflow.

This staged example shows the pattern: define, build, challenge, correct and verify. It supports the portfolio; it is not the portfolio itself.

Diagnostic system / P01

Defining scope / Coordinator

ACCEPTANCE / WARNING >= 30 MIN / HUMAN AUTHORITY

Selected work

Useful systems,
not isolated demos.

Representative work without exposing client names, internal details or employment history.

01

Python / Automation

Technical workflow applications

Desktop applications that turn calculations, measured data and repetitive reporting into reliable daily tools.

Days of manual work reduced to minutesPython / GUI / Data processing / PDF reports
02

Data / Machine Learning

Business data analysis system

A complete analytical pipeline covering data collection, preparation, custom model training and validation.

One system from raw input to evaluated outputPython / ML / Feature pipelines / Validation
03

Agentic AI

AI-assisted code review

A structured review workflow for finding defects, proposing improvements and combining leading AI provider APIs.

Repeatable implementation and verification loopLLM APIs / Agent workflows / Python

Capabilities

One profile across
software and reality.

I build software around real technical processes — from measurement and diagnostics to data analysis and automation.

FPV racing drone, dark blue model aircraft, diagnostic equipment, soldering station and software development workspace
BuildMeasureDiagnoseAutomate
01

Python applications

Desktop tools, calculation workflows, automation and report generation.

02

Data and machine learning

Data preparation, analytical pipelines, model training and practical validation.

03

AI development workflows

Daily work with Codex and Claude Code, multi-agent review and leading model APIs.

04

Technical diagnostics

Hands-on measurement, equipment diagnostics and interpretation of real-world data.

Building systems for the real world

I understand the process
behind the data.

My background combines Python development with diagnostics, servicing and measurement of electrical, microscopic and medical equipment. I now apply that perspective to automation, data analysis and AI-assisted software engineering.

This changes how I build: I look for unreliable inputs, unclear decisions, missing traceability and failure modes before treating a model output as an answer.

Python application developmentData processing and analysisTechnical measurementEnglish and Czech

Have a process worth improving?

Let's turn it into
a working tool.

jan.prejzek@gmail.com +