Offre d'emploi Internship - R&D - Ind. Investment: Flexibility & Risk Mgmt F/M

The operations research team of Air Liquide R&D works on diverse optimization and simulation methods to support decision-making on key operational and strategic business objectives.

This internship focuses on developing a decision support framework for strategic capital investment in industrial energy systems, specifically addressing market volatility and future uncertainty for risk-averse decision-makers. An example application is optimizing electric boiler or heat storage sizing for an existing natural gas-fired cogeneration plant. The methods could be extended to hydrogen and oxygen production and storage integrated systems.

The main tasks are:

* Formulate a two-stage robust optimization (2-stage RO) model to capture the investment decision (e-boiler / heat or power storage sizes) and subsequent operational decisions under price uncertainty.
* Implement and solve the bilevel optimization problem, exploring techniques such as the Column-and-Constraint Generation (C&CG) and compared to alternative decomposition methods.
* Quantify the value of generating a cost-robustness Pareto front, and comparing it with deterministic and stochastic optimization methods to provide clear, actionable insights for decision-makers.

* Final year engineering student / Master 2 in computer science or applied mathematics.
* Strong background in applied mathematics: optimization, operations research, and MILP modeling.
* Good programming skills: Scientific Python (NumPy, SciPy, etc.), and OR modeling frameworks (e.g., Pyomo). Familiarity with robust optimization concepts and solvers (e.g., HiGHS, Gurobi, CPLEX) is a plus.

Additional Information

Air Liquide has been awarded the Happy Trainees label.

The internship will be carried out at Campus Innovation Paris, Air Liquide's R&D center in France located in Loges-en-Josas (1, Chemin de la Porte des Loges).

* Geographical location: France / Ile de France / 78 - Les loges
* Desired start date: Early 2026
* Duration of the internship : 6 months