Four years of commercial development — from event-driven integrations for energy distribution to systems used by the Czech Ministry of Justice.
The intensive retraining programme that got me into professional development. Java and object-oriented design, relational databases, version control in Git — and above all teamwork on shared projects and mutual code review, which taught me more than the syntax ever did.
Three and a half years on enterprise systems for public administration and the energy sector. I started on the backend — integration logic over Apache Kafka and asynchronous event processing for Landis+Gyr and Transelectrica. I gradually moved to a fullstack role on the eSpis and eISIR project for the Czech Ministry of Justice: REST and SOAP services per XSD and WSDL contracts, query optimization over DB2, the Elastic stack, unit and integration tests, and Angular frontend support. Alongside that I built an HR integration for Sconto CZ/SK running as an Azure Function.
Java backend microservices and an Angular frontend for IDC’s AI platforms. IDC TechMatch is built on matching algorithms connecting technology buyers with vendors; IDC Quanta brings sixty years of IDC research straight into e-mail and Claude AI over MCP. On top of that: AWS (EKS, Lambda), Kubernetes with ArgoCD and Pulumi, MongoDB, PostgreSQL and Redis, an AI layer in LangChain, LangGraph and Azure OpenAI with Langfuse, GitLab CI/CD and Prometheus and Grafana monitoring.
Some of these run inside companies and government systems, so there is no public link — but the technology is real.
A team of agents on my own server, commanded by one master: a security audit, client-website checks and lead collection overnight, a Telegram briefing in the morning, Czech voice control during the day. Nothing is sent without approval. The same build I offer as AI automation.
A platform that brings sixty years of IDC research and market data straight into the tools people already work in — e-mail and Claude AI over MCP. Every answer is traceable back to its source.
AI platform connecting technology buyers with vendors. Java backend microservices, matching algorithms and an Angular frontend.
Digitalization for the Ministry of Justice. Spring Boot backend, REST and SOAP services per XSD/WSDL contracts over DB2.
Java application as an Azure Function. HR system integration, data transformation and synchronization to directory services.
Distributed integration over Apache Kafka. Asynchronous event processing, REST API and a React frontend.
Refactoring of a legacy Java system focused on readability, stability and maintainability. Analysis and bug fixing.
Programmer I — the official Oracle certification covering the Java language, collections, streams and exception handling.
Daily work with Claude Code, OpenAI Codex and Gemini CLI — not as a gimmick, but as a genuine speed-up of routine work.
IT service management certification — how an application not only gets built but keeps running reliably: operations, change, incidents and support.
The specific systems I worked on are listed under projects; client websites are under websites.