Rechenzentrum der Finanzverwaltung NRW (RZF) Tech Stack

Digital tax administration platform for German federal finance authority

Government Administration Düsseldorf 501–1,000 employees Founded 1957 Government Agency

RZF operates Germany's tax filing and processing backbone for North Rhine-Westphalia, serving ~1,000 employees across tax data processing, assessment generation, and IT infrastructure for regional finance offices. The tech stack spans Java, COBOL, PostgreSQL, and Kafka alongside legacy Windows/Office tooling — a typical government IT profile — but the active project list reveals a significant modernization push: cloud infrastructure rollout, SIEM/SOC implementation, ML/LLM development, and IT architecture redesign. Hiring velocity is accelerating in engineering and security roles, pointing to pressure to move from batch tax processing toward real-time compliance and fraud detection.

Tech Stack 18 technologies

Core StackJava Linux Kafka Puppet PostgreSQL COBOL Windows PowerShell VB.NET Outlook Word OneNote Excel Git Spring Boot IntelliJ IDEA Gradle JPA

What Rechenzentrum der Finanzverwaltung NRW (RZF) Is Building

◆Challenges

Implementing hybrid multi-cloud infrastructure
Neuausrichtung unserer it-architektur
Complex scan software deployment
Speeding up tax return processing
Intelligently supporting audit processes
Detecting fraud structures
Ensuring compliance with data protection
Digitalizing state services
Ensuring compliance with information security standards
Integrating security requirements into development

▲Active Projects

Ki-cloud-inkubator
Cloud implementation project
Hybrid multi-cloud infrastructure rollout
Siem and soc implementation
It service continuity management
Neuausrichtung unserer it-architektur
Ml and llm application development
Ki-strategie implementation
Konsens
Modernizing existing applications

Hiring Activity

Accelerating9 roles · 6 in 30d

Department

Engineering

Security

Seniority

Mid

Senior

Lead

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About Rechenzentrum der Finanzverwaltung NRW (RZF)

Rechenzentrum der Finanzverwaltung NRW (RZF) is the IT operations center for North Rhine-Westphalia's tax authority. The organization operates the digital tax filing portal (ELSTER), processes incoming tax returns, generates assessment notices, manages tax software development, and provisions hardware and software to all regional finance office workstations. With roots dating to 1957 and based in Düsseldorf, RZF coordinates with counterpart IT centers in other German states on common digital services. Current operational focus spans tax data throughput optimization, audit support automation, and fraud detection — alongside a parallel modernization track involving cloud migration, security infrastructure hardening, and AI-driven process support.

HeadquartersDüsseldorf

Company Size501–1,000 employees

Founded1957

Hiring MarketsGermany

Frequently Asked Questions

What technology stack does RZF use?

Primary languages: Java, COBOL, VB.NET, PowerShell. Data layer: PostgreSQL, Kafka. Development: Spring Boot, Gradle, JPA, Git, IntelliJ IDEA. Infrastructure: Linux, Windows, Puppet. Productivity: Outlook, Word, Excel, OneNote.

What projects is RZF working on?

Active initiatives: cloud infrastructure and multi-cloud rollout, SIEM/SOC implementation, IT architecture redesign, ML/LLM application development, AI strategy implementation, and modernization of existing applications. Core pain points: tax return processing speed, hybrid cloud complexity, fraud detection, and audit support automation.