Xavier graduated from Ecole Polytechnique and Mines Paristech. After working for Jumia Travel (Rocket Internet) as MD for West Africa, he worked at the French Ministry of Finance, where he discovered open banking and how it could reshape the payments & rewards industry.

He created Joko in 2018 with Alexandre and Nicolas, with the ambition to reinvent consumers' shopping experience, from product discovery to reward and payment.

When he's not working, he tries to travel the world and eat good food as much as he can.

Hajar attended Ecole Centrale Paris and ESCP Business school. She started her career at Givenchy (LVMH) and then she decided to join the start-up and e-commerce ecosystem at Manomano to build the planning process in the ops team.

She joined Joko in 2021 to build the online business and grow the team. Her main missions are to support our partners in their growth and to hunt down the best deals for users. What drives her on a daily basis is having fun with great team members and the challenge of building a great purchasing power app for our users.

During her free time, Hajar loves to travel and work from abroad, she loves to party and shop as well

Louis joined Uber Technologies after graduating from Ecole Polytechnique and UC Berkeley. As a Data Scientist, he worked on computer vision and facial recognition problems, before switching gears and becoming a Software Engineer working on safety & video processing.

He came back to France and joined Joko in January 2022 to focus on payment systems, where he contributes to architectural decisions, backend implementations, and frontend designs, working alongside Product & Ops. Louis is incredibly motivated by Joko's technical challenges, ambitious and talented team.

Outside of work, Louis is an avid reader and always looking for restaurant recommendations

After graduating from Ecole Polytechnique and ETH Zürich, Alice enrolled in a PhD in Computational Quantum Physics. Between Paris and New York, she wrote theoretical physics papers and developed a taste for computer science by contributing to C++ libraries developed in her lab.

She joined Joko as Software Engineer in October 2020, and she holds a versatile position ranging from architecture design to frontend display all the way to the deployment in production. What drives her on a daily basis is the resolution of complex problems in a quickly changing environment, together with a brilliant and caring team.

During her free time, Alice loves to completely disconnect by doing outdoor rock climbing or reading a good novel in the sun.

Ron completed his studies at Boston College, and joined a small software team in San Francisco that soon after got acquired by American Express. Following several years as a product manager at Amex, Ron co-founded Léon & George, an indoor plant delivery startup backed by Y Combinator.

He later moved to France, and joined the product team at Joko in October 2020. Together with the tech team and the rest of the product team, he is now focused on helping to develop Joko into a word-class product.

When not at work, Ron enjoys cooking intricate meals and being out in nature.


At Joko, we leverage technology to help our users shop smarter: we help people preserve their purchasing power, buy more responsibly, and save time — all at once. Our ambition is to have a positive impact on the everyday life of hundreds of millions of consumers around the world. To achieve that, we have built an app as well as a smart browser that provide users with:

  • online and in-store cashback
  • automatically applied coupon codes
  • interest-free ‘buy now pay later’ on any shopping website
  • information on their purchases’ carbon emissions
  • and much more!

Joko was created in 2018 by Xavier, Alexandre, and Nicolas and the team has reached great milestones already:

  • 1.8m+ users
  • 1600+ merchant partners
  • €12m+ raised from leading European investors
  • 45 team members
  • €10b transactions processed to date

If you want to know more about Joko, check out this page.

What they are looking for

We are looking for people who are willing to get out of their comfort zone to reach outstanding goals. Doers who never stop learning. People who are talented, optimistic, and fun: setting the bar high and willing to give feedback, but not taking themselves too seriously.

We value talents from diverse backgrounds and experiences to create great things together. Our team is made up of various profiles (former entrepreneurs, engineers, PhDs, etc.), each with a singular path that led them to join us.

To achieve our ambition, we built Joko around 5 core values:

  • we set the bar high
  • we get things done
  • we care for others
  • we never stop learning
  • we make it fun

If these values are aligned with what you are looking for and who you are, we would love to meet you!

If you want to know more about our team, check out this page.

Good to know

Our Paris office is located in the very heart of the city, close to Strasbourg-Saint-Denis.

We believe that flexibility and trust are important parts of a company. Our work environment reflects this thanks to:

  • Flexible remote: If you live in Paris, you can work from our office or from your place with no constraints. If you live elsewhere, you can get access to a coworking space.
  • Work from anywhere: Do you want to travel to South America for a month and work from there? For up to 3 months a year, you can work from most countries in the world.

On top of that, we offer many perks such as:

  • a budget for remote work equipment
  • a Swile card for your meals
  • a premium Alan Blue health insurance
  • a budget for training to keep learning new things
  • frequent team events and the Joko house every quarter!

Joko was also awarded the B-Corp certification for our environmental achievements and commitment.

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