Senior Software Engineer (Backend)

Rotterdam, Zuid Holland (Hybride)

Imagine; a world without private cars, traffic jams and emissions..

With the umob app, we bring our users from A to B, worry free. Jump on one of the e-scooters at the corner of your street, hop on the train and take the taxi or public bike in Paris. A oui. It was never this easy, all within one platform! umob  helps create a world where we give the streets back to our people, not to cars. We aim for a livable future, and we would like to welcome you to the team.

1 app, 1 verification. And 1 place to discover, book and pay. There is only 1 planet after all.

Let?s connect the dots. Some of our big why?s:

  • Make cities and countries more livable & sustainable.

  • Simplify and unify shared mobility across Europe; become #1 MAAS platform.

  • 1 app and 1 verification for the consumer to use taxi, (e-)bike, public- & shared-mobility, and you name it.

Impact the way the world travels as our (Backend) Software Engineer.

Ever thought about the way we travel and how we should shake things up? This is your chance to join a Technology Department that is at the forefront of doing exactly that. As our (Backend) Software Engineer, you’ll build on our umob platform, firstly for the Netherlands but soon in Europe, Asia & the US. Your work has a direct impact on the city streets. What you build today could be tested in real-life on your way home. We expect you to grow fast within umob  if you have that ambition. This role offers a unique chance to join a new technology team of A-players united by the goal of revolutionizing mobility through impactful IT solutions. Our soon to start CTO will play an important role in the interviews for this role.

Umomentum: Why join umob now?

  • Recently funded by private investors, our last round was 6 million, read more.

  • Experienced founders from GreenWheels (CEO Bibi Jorissen), GO Sharing (CCO Raymon Pouwels), KNAB bank (COO Don van Arem) and our freshly hired CTO who will officially start 1st of November.

  • Proven product/market fit and already operating.

  • STAK shares plan for every employee; we share mobility and success.

  • Fast-paced learning and growth in an environment of autonomy and responsibility.

  • A prime spot in Rotterdam from January, just 5 minutes away from Rotterdam Central Station!


Your next destination. Join our team if have the right drive & experience:

Hard skills:

  • Bachelor’s or Master?s degree in Computer Science, Information Technology, or related field;

  • 3-5+ years of experience in a Software Development role;

  • Strong (hands-on) experience in software development, systems engineering, and application architecture (our current stack is React.native, .NET, C#);

  • Experience with cloud computing (Azure is a plus), databases, CI/CD pipelines & automated testing;

Bonus points for the following experiences:

  • FullStack development, DevOps, observability and infrastructure automation.
  • Building third-party API integrations and/or SDKS
  • Functional programming.
  • Building and scaling live products.


  • Feels at home in a young, fun, yet entrepreneurial management team in an early startup with big potential;

  • Sees building a scalable platform used by a million users worldwide as most exciting challenge, you?re not afraid to build a new wing on a flying plane;

  • Excellent communication, interpersonal skills. You?re a team player while being independent as the same time;

  • Strong problem-solving and analytical skills;

  • Takes ownership and initiatives, continuous learning mentality;

  • Familiarity with Agile development methodology;

  • Bonus points: ability to mentor junior developers and expertise within the B2c/mobility domain.

If you ride with us;

  • Pay you (surprising!) + STAK options: let?s talk about this in the first conversation we?ll have, at startups things are not set in stone but the sky is also not the limit;

  • Send you to an island, camping, sunny or snowy destination for 25 days per year;

  • Pension contribution;

  • Daily healthy lunch included;

  • Allow you to work wherever, including 3 days at our Rotterdam HQ;

  • Your chance to play a big role in the early team of a future scaleup, building a new tech-team from the base up;

  • Provide you with great gear; a high-end laptop and whatever else you need to succeed #immersed?

  • Travel reimbursement for public transport & become a umob superuser; ride our shared-mobility up to ?50 per month (maximized by law);

  • Career growth opportunities, learning and personal development budget; we grow together!

  • Have fun as well. It?s not unique to have pingpong, Friday drinks and nice events but the people make all the difference!

Your turn, U-turn!

Reach out if you are interested or curious to learn more. We would rather receive your Linkedin profile and a few genuine bullet points about your interest so don?t hesitate and reach out right away. Urgent questions first? Reach out to Laura Voorsluijs (Lead Recruiter) via Whatsapp.

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