# Senior Consultant - .NET Microservices Developer

> Adservio Luxembourg · Luxembourg, Luxembourg (Hybrid) · Full-time · Posted 2026-10-28

**Workplace:** hybrid

**Department:** Dev

## Description

**Adservio Luxembourg**  
Adservio Luxembourg is the Luxembourg arm of Adservio Group, 300+ consultants across Paris, Brussels and Luxembourg, and 15 years serving regulated industries as a group. Our Luxembourg office opened in 2022 and works across financial services, energy and utilities, transport and mobility, insurance and the public sector: wherever compliance is not optional and failure is not acceptable. You join our Technologies & Engineering team.

**The context**  
With our team, you work for a financial institution in Luxembourg that is moving its core applications to an event-driven, cloud-native architecture, while its established integration and batch layers stay in service. Under DORA, operational resilience sits under direct supervisory scrutiny: every service you ship has to be observable, recoverable and auditable.

**Your mission**  
You build the services that let your client evolve its applications quickly without trading away reliability.

_Build the services_

-   You design and develop microservices from specification to production, and own their quality through unit tests and peer review.
-   You implement the event flows and the read and write models behind them.

_Keep data fast and consistent_

-   You tune queries and stored procedures for performance under production load.
-   You design the document stores that sit alongside the relational core.

_Ship and run_

-   You automate build, test and deployment through the team’s pipelines.
-   You diagnose production issues across services, integration layers and scheduled jobs.
-   You work in Scrum with product, QA and operations, and adjust as priorities shift.

**Your profile**  
You have built and run distributed systems in production, not only read about them.

_What is essential_

-   Strong C# expertise on .NET Core and .NET Framework, with unit testing built into the way you code.
-   Microservices delivered in production on Microsoft Azure (mandatory), containerised and released through CI/CD pipelines in Azure DevOps, with Git.
-   Hands-on Event Sourcing, CQRS and event-driven architecture with Azure Event Hub or Kafka.
-   Advanced SQL Server (performance tuning, stored procedures) and a NoSQL store such as Azure Cosmos DB.
-   Strong problem-solving and debugging skills, and practice of Agile/Scrum delivery.

_What makes the difference_

-   Elastic Stack (Elasticsearch, Kibana, Logstash) or a similar observability suite.
-   IBM Integration Bus or a similar enterprise service bus, and an enterprise scheduler such as Automic.
-   Knowledge of the banking sector.

**Languages**  
Required: fluent English, written and spoken.

**What you’ll find with us**  
**A tribe of senior peers.** You join our development tribe: senior engineers, peer code reviews and shared technology watch.  
**Expertise as a recognised status.** Our Subject Matter Experts are named as such, and are called on by fellow consultants and by clients across the group.  
**Regulated environments, across sectors.** This assignment is anchored in financial services, but our engineering work runs across energy, transport, insurance and the public sector, and resilience patterns travel. You will not stay a single-sector consultant.  
**A practice still being built, with a clear path.** Our Luxembourg office opened in 2022 and is taking shape now, backed by a group of 300+ consultants. What you help put in place becomes the way we work. Our grade framework is explicit, with an expert track for those who choose depth over management.

**How we hire**  
Application → Conversation with HR → Technical interview with your future peers → Feedback and decision. Whatever the outcome, you will hear back from us.

## Apply

[Apply at Adservio Luxembourg](https://apply.workable.com/adservio-belux/j/C8C918412F/apply)

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