# Senior Consultant - Data & BI Engineer (Security Clearance) - Luxembourg

**Company:** [Adservio Luxembourg](null/companies/pXCnp24JhtGsk9yJzDGjbF.md)
**Location:** Luxembourg, Luxembourg
**Workplace:** hybrid
**Employment type:** Full-time
**Department:** Data

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## Description

**Adservio Luxembourg**  
Adservio Luxembourg is the Luxembourg arm of Adservio Group — 300+ consultants across Paris, Brussels and Luxembourg, 15 years serving regulated industries. We opened in Luxembourg in 2022 and work across financial services, energy and utilities, transport and mobility, insurance and the public sector. You join our Technologies & Engineering team.

**The context**  
With our team, you work for an international organisation in the defence sector, based in Luxembourg. Its logistics, procurement and operations generate data that decision-makers rely on, in a security-classified environment where data quality, traceability and access control are not negotiable. The role is full-time on-site and requires a security clearance.

**Your mission**  
You turn operational data into reliable information that people can trust and act on, while keeping it under strict control.

_Build the data flows_

-   Design and maintain data pipelines that collect, clean and integrate data from business applications
-   Model data warehouses and data marts that answer the organisation's reporting needs

_Deliver the insight_

-   Build dashboards and reports with business users, from first mock-up to production
-   Translate business questions into indicators with clear, documented definitions

_Govern and secure the data_

-   Apply data quality controls, lineage and documentation so that every figure can be explained
-   Enforce access rules and security requirements specific to classified information

**Your profile**  
_What is essential_

-   At least 5 years in data engineering or business intelligence, delivered in production
-   A valid NATO SECRET security clearance, or a dormant clearance that can be reactivated
-   Advanced SQL and hands-on experience with SQL Server and its ETL and reporting tools (SSIS, SSRS)
-   Proven delivery of dashboards with Power BI or an equivalent BI tool
-   A degree in computer science, data science or engineering

_What makes the difference_

-   Python for data processing and automation
-   Experience with data governance or data quality frameworks
-   Previous work for an international organisation or in a defence environment

**Languages**  
Required: fluent professional English · Asset: French, German or any other language

**What you find with us**  
**A tribe.** You join our data & AI tribe: senior peers, peer reviews and shared technology watch.  
**Recognised expertise.** Subject Matter Expert is a real status with us: other consultants and group clients come to our experts.  
**Regulated environments, across sectors.** Your work sits where compliance is not optional and failure is not acceptable. Our data and AI work runs across energy, transport, insurance and the public sector, and governance patterns travel from one to the other.  
**A practice still being built, with a clear path.** Our Luxembourg office opened in 2022 and is backed by a group of 300+ consultants: what you help set up becomes the way we work. Our grade framework is explicit, with an expert track if you prefer depth over management.

**The process**  
Application → HR conversation → Technical interview with your future peers → Feedback and decision. Whatever the outcome, you will get an answer.