Job details

Modelica building/HVAC modelling expert

Company details

Established in 1999, 3E is an independent technology and consulting company in renewable energy and energy efficiency. The company offers expert technical guidance and due diligence services, covering the whole project lifecycle. 3E also has a track record in advising corporate and public authorities on sustainable energy technology, policy and markets. Additionally, it offers a suite of software services that enhance the performance of renewable energy plants, facilitate the implementation of smart grids and assess the energy efficiency improvements in buildings. 3E combines in-house innovation, partnerships with leading R&D centers, and a thorough understanding of practical industry needs to continuously offer high performance, cost-effective energy services and products.

3E expertise covers:

  • Solar: PV & thermal power
  • Wind power: on & offshore
  • Sustainable buildings & sites
  • Power grids and markets

Its clients include renewable energy project developers and investors, energy utilities, architectural offices, suppliers in the construction markets, maintenance companies, financial institutions and regional and international public authorities.

3E’s international team operates from Brussels (HQ), London, Paris, Toulouse, Istanbul, Delhi and Cape Town and has a project track-record of over 15 years in over 40 countries.


3E developed disruptive AI software ( that reduces energy consumption and CO2 emissions in office buildings up to 40%. When deployed over large volumes of buildings, SynaptiQ will have an important impact on realizing climate change ambitions.

Our solution applies self-learning algorithms to the collected data (building monitoring data, user feedback, weather forecast data, energy market data) and automatically and continuously optimizes specific control parameters of the building.

To do so, we use Modelica low-order building models in combination with Model Predictive Control algorithms.

To grow this venture and continuously improve our product, we are looking for a Modelica building/HVAC modelling expert. Key aspects of your role will be:

  • To work in collaboration with our technical team, extending our Modelica building/HVAC library and finetuning the existing models;
  • To analyse building model performance, quantify performance improvement potential and development effort and suggest prioritization of development;
  • To improve numerical properties of models and processes with regard to automation and scaling
  • To contribute to the further general development and increase in performance of the product.


  • Building/HVAC modelling expert
  • Very good knowledge of Modelica, experience with open-source (JModelica or OpenModelica) or commercial Modelica tools
  • Good level of Python and the scientific eco-system (pandas, scipy, statsmodels, scikit-learn, …)
  • Experience with parameter estimation, state estimation and Model Predictive Control (MPC) is definitely a plus
  • Knowledge of git, linux, shell scripting, docker is a plus
  • Research background but with a very pragmatic mindset
  • Able to cope with strict timing and deadlines
  • Flexible and start-up mentality
  • Professional proficiency in English. Working proficiency in Dutch and French is a plus


3E offers a unique opportunity to further develop yourself

  • … while applying MPC to real-world buildings to improve user comfort, save energy and reduce CO2 emissions
  • … in a company/team with an ambitious growth plan, providing a service disruptive to the current market
  • … with the potential to grow into a leading role in the SynaptiQ product development
  • … in a small team of top-level experts in HVAC, building simulation, web technology, embedded in a dynamic SME with a team of 100 employees active in more than 40 countries


  • Attractive salary package in line with your level of experience, including group insurance, hospital insurance, meal vouchers, representation allowance and company mobile phone
  • 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 over 40 countries worldwide, colleagues of 20 nationalities

  • Placed on:Fri 22 June 2018
  • Location: Brussels


Kalkkaai 6 Quai à la Chaux
1000 Brussels



For more information:
at the number: +32 (0)2 229 28 94
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