Job details

DeltaQ | Full Stack Developer - DevOps Engineer

Our Company

This vacancy is not for 3E itself but for a future spin-off, being DeltaQ. See more below for the details!

DeltaQ is a Belgian technology company, operating from the centre of Brussels, which developed a software solution that learns to predict the behaviour of a building (in a context of comfort and energy use) and leverages these predictions to automatically and optimally steer the energy systems.

DeltaQ improves comfort while maximizing energy and CO2 savings and allows operational teams to turn their attention to added value work as opposed to repetitive tasks and constant fine-tuning.

When deployed over large volumes of buildings, DeltaQ will deliver an important contribution to realizing the world’s ambition in the fight against climate change.

What you will be doing

To grow this venture, we are looking for a talented Full Stack Developer / DevOps Engineer to support our team.
The ideal candidate enjoys dealing with mission-critical systems, complex workflows, data analytics and cloud computing.

You will have the opportunity to display and further develop your skills in the following areas:

  • Design, implement, and automate the deployment of scalable infrastructure
  • Monitor and troubleshoot operational or data issues
  • Operate and maintain internal SQL and NoSQL databases
  • Maintain our GraphQL APIs and internal Python libraries
  • Back-end development on our modelling services and front-end development for our web applications
  • Design and implementation of UI features on our dashboard

Our ideal candidate

  • Master degree in engineering/IT or equivalent through experience
  • At least 3 years of experience in a software development, operations or DevOps role
  • Excellent Full Stack programming skills (knowledge of multiple programming languages is a plus, we mainly use Python and JavaScript/React)
  • Affinity with modern development methods, such as agile development, automated testing and distributed or micro services architectures
  • We value experience or interest in the following:
    • containerization, clustering and cloud-native technologies (e.g. Linux, Docker, Kubernetes)
    • cloud providers and deployments• IT/devops/operations automation, IT networking, industrial protocols
    • data wrangling, scientific Python, machine learning or AI modelling
    • Experience in the building or energy sectors
  • Eager to learn and able to contribute valuable input to architectural and technology decisions
  • Team player with good communication skills
  • Fluent in English

What we offer in return

DeltaQ offers a unique opportunity to further develop yourself in a company with an ambitious growth plan, providing a service disruptive to the current market. You will be working in in a small, engaged team with top level experts in real estate, energy efficiency in buildings and web technology.


  • Attractive salary package in line with your level of experience, including diverse extra-legal benefits
  • Sustainable transport: Easy access with public transport, 100% reimbursement of public transport fare
  • A flexible work environment: flexible working hours, telework, flex desk policy, etc.
  • An international environment: projects in different European countries, colleagues with diverse nationalities

Interested? Send your CV + motivation to or through LinkedIn!
If you apply here your CV will also be transmitted to the correct person.

  • Location: Brussels - Belgium


Kalkkaai 6 Quai à la Chaux
1000 Brussels

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