Backend Engineer

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Backend Engineer

We're looking for a senior backend engineer to join our young startup. You'll be part of a founding team that's building the next professional network by focusing on meaningful introductions and real relationships. It'll be the ride of a lifetime. All aboard!


Robert Gaal

Co-founder & CEO

Product manager at Google and founder of Wakoopa & Karma

Emiel van Liere

Co-founder & CTO

Lead mobile at the largest Dutch social network, Hyves

Esteban Garcia

Co-founder & Head of Design

Senior designer at on new product development

Camille Grotenbreg

People & Operations Manager

Operations Manager at Startupbootcamp & Innoleaps

What we offer

  • Become a founding team member
    At Cooper we're working to create a trusted professional network built on meaningful introductions and real relationships.

    It's Day 1 for us, so instead of adapting current structures and behaviors you get to come up with some yourself. You'll be part of a founding team which is not for everybody. 

    That's a big opportunity to make your mark and be responsible for your own impact. Put your flag in the ground. Take the bull by the horns. You get it.

  • Experienced fellowship
    We'll back up your experience with ours, from companies like Google, Booking or Hyves. Our CTO was an early engineer at several growing companies, so there's a lot you can pick his brain on. That includes all the stuff we messed up, horribly.

    Our team is supported by the same investors who once supported Lyft, Skype, Slack, and TransferWise, former and current team members of Apple, Facebook, Google, and Shopify, and founders of companies such as Clearbit, Framer, Mesosphere, and WeTransfer.

    What we're saying is this:

    This is not our first picnic. Or the second for that matter.

    For this role, we're looking for people who have been in those trenches. That doesn't mean you're an expert at absolute everything, and we're hoping there's still a lot we can teach you as well. 

  • Compensation for focus
    We love ramen! Just not every day.

    That means your compensation pays all the bills and keeps you focused. Our offer also includes a share in the company at a seed valuation. We determine your compensations based on market values, your previous experiences, and your performance. 

    All compensation at Cooper is completely transparent. You'll know what everyone else earns and how to take it to the next level.

  • Space to grow
    We're eager to give you the space to grow into the perfect role for you. Next to mentorship we'll support your professional growth by connecting you with mentors from our network, and giving you a budget to go to conferences or classes to level up your skills.

    Perhaps you'd like to focus on big data infrastructure. Or maybe managing the engineering team sounds like the bigger challenge. Or our mobile deployment is something you'd like to improve on. Or all of the above! 

    That's up to you. I'm only a job post, not a career advisor.

What we're looking for

  • Diverse backgrounds
    Our team needs to be as diverse as the communities and users we serve. We're encouraging people from underrepresented groups in tech to apply.

    Chat with us using the bubble on this page or email us, and we'll be happy to answer any questions you might have.

  • Experience in our stack
    For this position, we're open to backend specialists as well as allrounders. We build our apps in Node.js, React and React Native. This means that Javascript should be as familiar to you as the back of your hand, and that you've either experimented with Typescript or have a solid grasp of it already.

    We run on MySQL on AppEngine, as well as other Google Cloud Platform backends like Firebase. Some familiarity with cloud infrastructure, for instance GCP or AWS, is necessary for you to hit the ground running. Continuous integration and proper automated testing should be common to you as well. 

    In the future we also plan to delve into areas such as graph search and real-time messaging. If you have some experience with this already, that could be a plus.

  • Learning mindset
    There might be some things that the team at Cooper can improve on, but the one thing that they are experts in is how to learn fast. This is exactly what we look for in you too.

    Most of what you know comes from your passion for doing new things and learning how it all works along the way. You can direct yourself and operate independent from other teams. If it's not anyone's job, you might take it on to learn yourself a new skill and help your team at the same time.

    So don't feel like you can't apply to this role because you don't feel senior enough, you humble soul you. If you learn fast, you have a place here.

  • Obsessed with tech
    We however don't believe in fixating on a single language alone. Whatever tools are best for the job, those are what interest us. You should have a similar mindset.

    This could mean that you've been called an "all-round developer" at one point. You're not an expert on everything per se, but you do have the interest to look outside of the toolset in front of you and wonder: "Could I use a better tool for this?"

  • Team first
    We don't believe in the myth of the shy engineer, hurled up in the corner of the office, quietly being brilliant without uttering a single word.

    Engineering is a discipline that has to speak up for itself and communicate its vision, just as much as designers or product managers tend to do. 

    You have a solid set of communication skills, and aren't afraid to speak up if the conversation is going into the "cool-but-technically-impossible" zone. If this is something you're keen to work on, then a startup is the perfect place for you to do that. After all, you'll be exposed to every decision, big or small, throughout the growth of the company.

  • Not a ninja engineer, rockstar developer, unicorn hacker, or any of those
    Sorry 🤷‍♂️  

In short

  • Senior engineering role in Amsterdam
  • Compensation to keep focus, in salary and shares
  • Self-learning ability valued more than experience
  • Passion for engineering with an experience in Javascript & cloud backend
  • Lay the foundation on which the company grows
  • All the perks listed below

More of a frontend engineer?

Check out our open position for that role instead.


1. All equipment & hardware you need
2. Plan your own work hours
3. Drinks, lunch & snacks to keep your energy up
4. Subscriptions & services to get the job done
5. Health & sick days with no questions asked
6. Optional 32/36 hour contract if you need it

7. Your own debit card to spend on whatever you need
8. Work travel expenses are all covered
9. A budget to pay for your commute if needed
10. Unlimited time-off with 25 days per year encouraged
11. Yearly retreat with the team
12. An office at TQ in the heart of the city

Like painting, most software is intended for a human audience. And so hackers, like painters, must have empathy to do really great work. You have to be able to see things from the user's point of view.