SQL / Data Vault Expert (m/f/d) –| BI & Data Architecture | ASAP – 2026 - Fluent German
For a public sector client , we are seeking an experienced SQL / Data Vault Expert (m/f/d) to support Business Intelligence (BI) and Data Architecture initiatives. The role starts immediately and runs until end of 2026 , offering a long-term, high-impact engagement in a complex data environment.

Project Overview

• Start Date: ASAP
• Duration: Until end of 2026
• Industry: Public Sector
• Work Model: Hybrid (20% on-site / 80% remote)
• Project Language: German (English is a strong advantage)

Key Responsibilities – Business Intelligence & Data Architecture You will deliver high-quality BI and data architecture services , including:

• Development of SQL-based database procedures and functions
• Data cleansing, preprocessing, and data management using SQL
• Implementation and performance optimization of complex data transformations
• Relational data modeling with a strong focus on Data Vault architecture
• Ensuring data consistency, integrity, and high data quality
• Consulting stakeholders on complex business and technical topics
• Design and implementation of customized, high-quality BI solutions
• Evaluation of technical solution approaches and execution of feasibility analyses
• Analysis of complex problem statements and development of holistic concepts and studies
• Preparation and delivery of presentations for different target audiences
• Structured, goal-oriented communication of complex technical topics to internal stakeholders

Requirements – Mandatory Skills & Experience To succeed in this role, you must bring the following:

• Fluent German & English
• Expert-level Data Vault knowledge , including hands-on experience with self-developed Data Vault generators ( mandatory )
• 5–7 years of experience with Java Spring and data migration projects
• 5–7 years of professional experience in IT consulting
• Strong expertise in SQL , BI systems , and data architecture
• Completed degree in Computer Science , Business Informatics , Business Administration , or a comparable qualification (university or university of applied sciences)
• Professional demeanor with excellent communication and stakeholder management skills
• Outstanding analytical and conceptual abilities
• High proficiency in moderation, presentation, and stakeholder communication

Why This Role?

• Long-term public sector project with high stability
• Opportunity to work on complex, enterprise-scale BI and Data Vault architectures
• Flexible hybrid working model