Our Interview Process

Applying for a job at CarbonChain? Here's what to expect if you're invited for interview.

Thanks for your interest in working at CarbonChain. To help you prepare for the interview process, we've put together some guidance notes on what to expect. Depending on the role you're applying for, some details may differ, but many ingredients will be the same.

If you haven't yet applied for a career at CarbonChain, browse our open roles here.

What are we testing for?

We’re trying to evaluate whether you’ll be a high performer at the role you’re applying for, and whether you’re a good cultural fit with our values. These are:

  • People, product, planet
    We invest time, trust and transparency in each other, so we can build the best product for the planet
  • Think Gigatonne
    We're not here to count grams of carbon. The climate crisis requires us to aggressively decarbonize. Dream big and act bold.
  • Customer traction, climate action
    We make an impact by helping our customers reduce their emissions. We seek customers who can have a large impact on global emissions.
  • Bias for action
    We move quickly. Good now is better than perfect later.
  • Own the hot potato
    We take ownership of tough problems and solve them. We bottom things out if we need to.
  • Be Curious
    We rely upon the diverse expertise of the team to solve hard problems, and everybody has things to learn. We are curious about new possibilities and act to explore them.

Throughout the process, you can expect to be asked questions which evaluate how well you’ve exhibited these values in your previous roles and projects. We love to hear about specific examples where you’ve really embodied these principles.

The process

☎️ Initial phone screen

If your cover letter and CV look like you might be a good fit for CarbonChain, the process will begin with a phone screen.

This will be a 30 minute interview to learn more about your background, and to assess cultural fit. We will select a single CarbonChain value and dive deep on that value with a question about your past work experience.

Ahead of this interview we recommend that you refresh your memory of your CV and any other material you provided to us, such as LinkedIn or Github pages.

This interview is also a great opportunity for you to ask questions and build your understanding of CarbonChain and the role.

🤓 Technical task

After the phone screen, the next stage is a technical task. This might be a take-home or a live exercise depending upon the role.

We’ll typically ask you to complete the test in the week after the phone screen, but we appreciate that everybody has their own constraints. We’re happy to fit in around your timelines. We expect it to take 2-5 hours.

In all cases, the kind of things we’re looking for are:

  • Does the work achieve the outcome we were looking for?
  • Can you clearly communicate what you’ve done? When challenged, can you defend choices you’ve made?
  • What’s it like to work with you? How do you take feedback and think things through with your potential colleagues?
  • How well do you understand the context of the task you’re doing? How much have you figured out about the domain?

For many roles, we’ll address these questions in a separate review session, also online. In those cases, we’ll ask you to expand upon the solution you submitted, to get a feel for what it’s like to pair program with you.

🤝 In-person panel

If you get to the final round, congratulations! You’ll be invited to an in-person round of interviews at our London office (LABS Triangle, Camden Lock Market).

This round typically consists of 3 or 4 interviews (over the course of about half a day). You'll meet our co-founders (Adam and Roheet) and one or two team members with whom you would work a lot if you got the job.

In this round you can expect more focus on whether you’re a strong cultural fit with our values (see above).  In a series of one-to-one interviews you'll be asked questions that give you the opportunity to demonstrate how you’d fit into the team, what your aspirations are, and how well you’d interact with people in different roles within the organization. We encourage you to use different examples in each interview. Your examples will be discussed among the panel when making the final decision.

We’ll try and schedule the interview so you can either join us for lunch (let us know if you have preferences - we’ll order veggie by default) or a pint at the pub across the road.

Next steps

We do our best to meet and evaluate the outcome of the full interview process within 24 hours. Everybody who has been involved in the interview process will contribute their thoughts on the strengths and weaknesses we observed during the process.

Hopefully we’ll then be in touch to extend an offer 🙌🏼

Once you’ve accepted an offer

We’ll ask you to provide 3 references, at least one of which is a direct manager.

We’ll give each of these a 10 minute call to get a better understanding of what you’re like to work with, and how we can set you up for success at CarbonChain.


Do you want to help accelerate the transition to a net-zero economy? We’re looking for brilliant engineers, designers and data scientists to join our team.

Current Vacancies