András Hatvani

Senior Software Architect · AI Transformation Consultant

Vienna, Austria

I architect enterprise systems with 25+ years of experience, specialising in legacy modernisation, microservices, and cloud-native platforms. I pioneer AI-assisted and agentic coding practices, helping midsize enterprises integrate AI tooling into their development workflows. Currently I'm leading Wiener Wohnen's multi-product platform modernisation with Kafka Streams, Kubernetes, and agentic development practices.

hu — native de — C2 en — C1 B.Sc. Software & Information Engineering — TU Wien

AI Tooling & Agentic Coding

Pioneer use of Claude Code, GitHub Copilot, and local LLMs to accelerate enterprise development

Regulatory Delivery

Error-free EU FMD implementation in 3 months; zero tolerance for compliance failure

Legacy Modernisation

Transformed monolithic enterprise systems into cloud-native microservice architectures

Enterprise Architecture

25+ years designing distributed systems for Austria's largest public sector organisations

See projects →

Projects

Wiener Wohnen Kundenservice GmbH

Housing Management Platform

Jan 2020 – present

Long-term architecture responsibility for multiple products at one of Europe's largest housing administrators — over 220,000 apartments in Vienna.

Microfrontend and streaming modernisation accelerated by agentic coding with Claude Code and GitHub Copilot.

Kafka Kubernetes Kotlin Spring Boot

Pharmosan Handelsgesellschaft m.b.H.

ERP Modernisation & FMD Compliance

Jan 2018 – Dec 2019

Complete technical transformation of a regulated pharma ERP under time pressure — Java 6→12, JBoss→Spring Boot, and microservice redesign.

Error-free EU FMD implementation in 3 months, with zero production outages during the regulatory deadline.

Spring Boot AMQP Java Oracle

ÖBB – Österreichische Bundesbahnen

Ticket Shop System

Aug 2015 – Dec 2017

End-to-end architecture and delivery of the ticketing system for Austria's national rail vending machines.

Cross-team coordination and performance optimisation delivered within strict hardware constraints imposed by Xerox terminals.

Spring Boot Angular Xerox HW integration Java

Experience

Software Architect

Wiener Wohnen Kundenservice GmbH via openDEVS

Jan 2020 — present

  • Long-term architecture responsibility across multiple products (BMP, BEF, SMP, BPKD, BIT)
  • Pioneer use of agentic coding with GitHub Copilot and Claude Code
  • Microfrontend development with Piral & React (TypeScript)
  • Microservices with Kafka Streams, Spring Cloud Stream, Kotlin, Kubernetes
  • Introduced WebFlux and Kotlin Coroutines
  • Migrated from annotation-based to functional Spring Cloud Stream
  • Continuous infrastructure modernisation

Enterprise Architect & Team Lead

Pharmosan Handelsgesellschaft m.b.H.

Jan 2018 — Dec 2019

  • Full technical transformation of a regulated pharma ERP: Java 6→12, JBoss→Spring Boot
  • Strategic architecture decisions and AMQP-based microservice design
  • Error-free EU FMD (Anti-Falsification Directive) implementation in 3 months
  • Austrian POS security regulation (Registrierkassensicherheitsverordnung) compliance
  • Order processing performance improvement by orders of magnitude
  • Test management, CI setup, and developer team coaching

Software Architect & Lead Developer

ÖBB – Österreichische Bundesbahnen

Aug 2015 — Dec 2017

  • End-to-end architecture and delivery of the Ticket Shop System for national rail vending machines
  • Spring Boot + Angular 2 + Xerox hardware integration
  • Cross-team coordination across route calculation, order management, and hardware teams
  • Performance optimisation for hardware-constrained Xerox kiosk terminals
  • Development standards and knowledge management

Skills

AI & Agentic

Claude Code GitHub Copilot LM Studio Anthropic API RAG

Languages

Java Kotlin TypeScript JavaScript Swift SQL

Backend

Spring Boot Spring Cloud Stream WebFlux Kotlin Coroutines JavaEE jBPM Camunda Hibernate

Frontend

React Angular Piral (Microfrontends)

Streaming & Data

Kafka Kafka Streams Apache Storm Zookeeper

Cloud & Infra

Kubernetes Docker Helm Argo CD

CI/CD & SCM

GitHub GitLab Bitbucket Jenkins Bamboo

Databases

PostgreSQL MS SQL Oracle MySQL DB2 Cassandra

Architecture

Microservices Event-driven Domain-Driven Design SOA

Methods

TDD Scrum Kanban Clean Code Agile Coaching

Get in touch

github.com/andrashatvani linkedin.com/in/andrashatvani

hatvani.io · 2026