Energy Team Intern

EPYR
EPYR

Intern

Paris

EUR 1,700-1,700 / month

Posted on Sep 19, 2026
Apply now

One-line pitch

Join Epyr’s Energy team to build AI-powered software and production tools that help operate, analyze, and scale industrial decarbonization in the real world.

About Epyr

Epyr is a French climate-tech company on a mission to decarbonize industrial heat — one of the largest, hardest-to-abate sources of CO₂ emissions in Europe.

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We develop next-generation Thermal Energy Storage systems that convert low-carbon electricity into reliable, high-temperature industrial heat. Our ambition is simple: make clean heat cheaper, more flexible, and more scalable than fossil fuels.

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Founded by experienced entrepreneurs and energy/climate leaders, Epyr operates at the intersection of:

  • Energy markets — spot, intraday, flexibility, grid services

  • Industrial systems — high-temperature processes, reliability constraints, deployment at scale

  • Software & quantitative modeling — optimization, simulation, pricing, dispatch algorithms

  • Climate impact — direct contribution to European industrial decarbonization

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We are building for people who want to solve real-world physics, economics, and systems problems.

Role: AI & Software Development Intern — Energy Team

Why this internship matters

The Energy team relies on software to run real analyses, support operational decisions, and make the team faster every week.

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As an intern, your mission will be tech-first: build and improve internal tools used in a professional environment, connected to real production systems and live operational needs. You will also help identify where AI can create leverage for the team — from analysis automation to workflow acceleration and better knowledge access.

What you will do

Depending on your profile and the team’s priorities, your work may include:

  • Build and improve internal software tools used by the Energy team in day-to-day work

  • Contribute to AI-powered workflows, assistants, automations, or analysis tools that make the team more efficient

  • Work on Python-based services, notebooks, data pipelines, APIs, dashboards, and internal applications

  • Connect prototypes to real production constraints: reliability, usability, documentation, maintainability, and deployment

  • Investigate AI tools and use cases, test them pragmatically, and turn the useful ones into team workflows

  • Support energy-related analyses when needed, without being expected to be the “energy market expert”

What makes this internship different

This is not a generic “energy transition internship.” It is a software-builder role inside a deeptech company, with real users, real data, and real production constraints.

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You will get:

  • Real ownership — your tools can become part of the team’s daily operating system

  • Production exposure — work beyond toy prototypes, with reliability, deployment, and maintainability in mind

  • AI leverage — identify and build practical AI use cases that save time and improve decision quality

  • High learning density — software, data, AI, energy systems, and climate-tech scale-up

  • Close collaboration with operators — direct feedback from the Energy team and other internal users

  • A strong potential path to full-time — for exceptional interns, the internship can convert into a permanent role

Profile we are looking for

Must-have

You are likely a final-year student or gap-year student from a top engineering school or quantitative university program, such as École Polytechnique, Mines Paris, CentraleSupélec, Ponts,

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You have:

  • Strong quantitative and analytical skills

  • Solid foundations in applied mathematics, physics, engineering, economics, energy systems, or computer science

  • Good Python skills, or the ability to become productive quickly

  • A structured problem-solving approach

  • Strong written and oral communication in French and English

  • Genuine interest in energy transition, industrial systems, and climate impact

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Nice-to-have

  • Experience with electricity markets, optimization, operations research, statistics, or time-series analysis

  • Knowledge of power systems, renewables, storage, flexibility, or energy regulation

  • Experience with Python data libraries, optimization packages, or simulation tools

  • Previous internship in energy, strategy consulting, trading, quantitative research, industrial engineering, or climate tech

  • Taste for messy real-world problems where the best answer is not in the textbook

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Soft skills

We value people who are:

  • Rigorous without being slow

  • Autonomous without being isolated

  • Curious enough to challenge assumptions

  • Pragmatic enough to ship useful work

  • Comfortable with ambiguity and fast iteration

  • Excited by a demanding, mission-driven team environment

What success looks like

What success looks like

By the end of the internship, a strong candidate will have:

  • Built or improved software tools used by the Energy team

  • Turned at least one AI use case into a practical workflow or prototype

  • Shipped work that is documented, maintainable, and usable by non-developers

  • Developed a strong understanding of how software and AI can support industrial decarbonization operations

  • Earned the trust to take on larger responsibilities — potentially as a full-time team member

Practical details

  • Location: Paris

  • Team: Energy

  • Start date: April to June 2027

  • Duration: 6 months, end-of-studies internship

  • Language: French and English

  • Internship allowance: €1,700 / month

  • Benefits: Meal vouchers, public transport contribution or Sustainable Mobility Package

Apply now
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