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Mechanical Engineering Intern



Paris, France
Posted on Wednesday, January 24, 2024

We are looking for a Mechanical Engineering intern to work with our Hardware team on designing, prototyping, testing and assembling robotic systems.

Internship, 6 months, full-time (35h/week), in-office (Gentilly, 94250) with a possibility of partial remote

Salary: 1000€/month

Start date: flexible


What will I do?

You will own a very diverse range of projects, develop your operational and analytical skills and get experience working at an ambitious tech startup. The main projects for this internship are:

  • Design highly specialized and complex robotic systems
  • Prototype your design
  • Test the prototypes
  • Assemble the first iteration of the released design
  • Document it
  • Party to celebrate having done all that



  • Fluent English & French
  • Hands-on prototyping experience (such as 3D printing, CNC, manual machining etc.)
  • Experience in CAD (portfolio is required)


What are the benefits?

  • Swile restaurant tickets (8€/ticket, 1 ticket per day worked, 50% paid by Cala)
  • Public transport subscriptions (Navigo, Veligo, Imagine R, Velib, etc., 50% of the monthly cost paid by Cala)
  • Health insurance (Alan, 50% of the monthly cost paid by Cala) Also,
  • Joining an impactful project in a start-up
  • Project ownership & autonomous work
  • Transparent growth & promotion opportunities
  • Flexible schedule and control of how you organize your day
  • Working in a large and comfortable 3-stories house fully owned by Cala that includes a big kitchen, free snacks & drinks, in-house canteen, shower, patio, games, and a pool
  • Fully equipped workshop for all your mechanical desires
  • All the hardware and software you need for work

Now, more details 👋

What's the company name?

Cala [ˈkɑːlə]

What's the company besides the name?

We are a food tech start-up driven by a team of 30 ultra-talented people working on creating fully autonomous cooking robots and managing revolutionary restaurants.

Same sentence, but shorter: we are making cool robots and selling great food.

Why even do all this?

Our mission is to make high-quality food more accessible.

The fast-food industry has done everything to reduce its food costs to cope with increasing real-estate and labor costs. We do the opposite — we use the productivity gains from our robots to:

  • invest in high-quality locally sourced ingredients
  • prepare them carefully in insanely good and infinitely customisable recipes
  • and serve them in a delightful customer-centric experience.

The hardware team is crucial for delivering this product to our customers.

What are our values?

  • We optimise for long-term, positive, measurable impact

We shy away from bullshit metrics and virtue signalling and instead focus on having an impact.

  • We practice proactive transparency

We use transparency as the cornerstone of trust we build with our customers and the responsibility we build with our team.

  • We use rational thinking

We use first-principle thinking to make informed decisions and deconstruct the status quo.

  • We move step by step

We take Gall's law to heart: "All complex systems that work evolved from simpler systems that worked" and build failure and iteration as part of the process.

  • We get hands-on

We move exceptionally fast by doing by approaching every problem by asking "Can we do it ourselves?".

Who will I work with?

Our hardware team consists of 5 amazing people: Ylan Richard as Head of Hardware (also the CEO), Julien as Lead Engineer, Anthony as Senior Electrical Engineer, Fabien as a Mechanical Engineer, and Imane as Supply Chain Engineer. You would be tutored by Fabien and work closely with the whole team. Also, you will work with Oussama, our Embedded Developer, Adrien, our Mechatronics Engineer, and Alexis, our Electronics Engineer.

They are all really cool.

What are the hiring criteria?

The amount of relevant experience and availability.

What is the interview process?

  • 1 hour call with Natalia, our Head of Talent. It can be done over the phone or via Google meets, and the goal is to confirm basic requirements and answer any of your questions [also, Natalia is the one writing this job post, so if you dislike it, you can use this opportunity to complain about it].
  • Technical call with Fabien, our Mechanical engineer. It’s a more in-depth call regarding your technical knowledge, experiences and preferred practices.
  • In-office visite to meet the team, get an inside view of how we work and do a quick case-study.
  • Reference call
  • Offer :)