Vacancy

Senior Data Engineer

Luxembourg Digital & IT Luxembourg On-site

TMC Luxembourg is looking for a Senior Data Expert for one of its clients.

About The Member Company

We are a global high-tech consultancy company with a team of entrepreneurial engineers, scientists, and digital experts from around the world. Together we form a fast-growing and proud community. We offer consultancy services to high-profile clients globally in diverse service areas, such as:

Technology & Engineering
Energy & Renewables
Life sciences & Pharma
Digital & IT

About this vacancy

We are looking for a Senior Data Expert with over 10 years of experience in data engineering, semantic technologies, and complex data integration. You will contribute to the evolution of internal applications by designing, extending, and optimizing tools that manage data stored in graph-based structures rather than traditional relational databases.

This position requires strong analytical thinking, deep technical expertise, and the autonomy to propose and implement robust architectural and technological solutions. You will be expected to work on both proof-of-concepts and the enhancement of production-ready tools while collaborating closely with developers, analysts, and technical leads.

What we expect from you

10+ years of experience in data engineering or software development involving semantic data, knowledge graphs, or complex data models.
Fluency in English is mandatory; French is a plus.
Advanced expertise in SPARQL is required.
Solid background in Java, especially when working with graph databases (e.g., RDF, OWL, SHACL).
Experience in creating or maintaining applications with graphDBs.
Good to have: development experience with ElasticSearch.
Capable of independently suggesting and implementing architecture or technology decisions.
Ability to create PoCs and deliver adaptive development for internal tools (ETL flows, interfaces, etc.).
Hands-on involvement in data presentation: designing filters, building UI integrations, or fetching/transforming the right data.
Exposure to front-end logic or styling is a plus (not mandatory).
Capable of managing multiple development environments and supporting CI/CD workflows.

What you can expect from us

We are truly unique thanks to our Employeneurship model which is a true innovation for the High Technology consulting business. It is the business relationship of the 21th century for high skilled technical professionals.

It is built around 5 main pillars :

You will have a permanent employment contract, offering you stability and security ;
You will get to know your market value and have a share in the profit your work generates thanks to the individual profit sharing ;
We will support you with a one-on-one coaching and trainings designed to help you develop your entrepreneurial skills ;
The competence cells structure, provides you with a strong meaningful and relevant network ;
The entrepreneurial lab : a playground for new ideas and a potential launching for start-ups.

The 5 basic principles of employeneurship

A long-term working relationship

Enjoy the security of a long-term contract and a stable source of income while getting the opportunity to work at diverse projects.

Individual profit sharing

Full transparency. That’s it. For each of your projects, you know your hourly rate, your costs, and your individual performance-based profit sharing, all in order to stimulate your inner entrepreneur.

Business cells

Our employeneurs are grouped in business cells based on their technical expertise. They are small, focused and function as high-grade knowledge networks. And as buzzing communities of close colleagues.

YOUniversity

Every employeneur drives their own career. Together, we make a plan for personal and professional growth. Receive personal coaching and an extensive training budget to keep developing yourself and deliver outperformance at our clients.