Sprend’s technical challenge is actually a cooperation test

Algorithmic puzzles have their place, but they don't tell us how we'll work together. Here is why our final interview revolves around a real-world bug, and why we are really just answering one question: ‘Do we enjoy working together?’

If you are an experienced developer, you've likely gone through your fair share of technical tests. While whiteboard algorithms and generic take-home assignments can be useful for establishing a baseline of knowledge, they often miss the most important part of senior engineering: the day-to-day reality of the job.

At Sprend, we take a different approach.

If you’ve made it past our agency partners and their rigorous (?) DNA screening – which you can read about in How we partner with agencies – I already know you can write code. My final test is about something much deeper: Can we solve real problems together, and do we actually enjoy the process?

  I thought you said nobody ever looks inside this legacy module!  - said one bug to the other
  I thought you said nobody ever looks inside this legacy module! – said one bug to the other

The Sprend Challenge

When we reach the final stage of our hiring process, which takes a couple of days, we invite you into our actual world. I will give you a real bug that currently exists (or recently existed) in the Sprend codebase. (If you want a head start on what you'll be looking at, check out The Sprend tech stack).

Your task is practical:

  1. Set up the local development environment.
  2. Reproduce the bug.
  3. Solve it.
  4. Step through the code with me and explain your fix.

What I'm actually testing

Yes, I want to see how you navigate an unfamiliar codebase. But the code is secondary. What I am really testing is your communication.

When you hit a roadblock setting up the environment, do you silently struggle for hours, or do you ask a sharp, targeted question? When you step through the JavaScript with me, can you articulate your thought process clearly? When we debate a different approach to the fix, can we do it with low ego and high standards?

This test is a two-way street. It is your opportunity to look under the hood of Sprend. You get to (some of) the codebase, and how I communicate as a founder and fellow developer. It’s a mutual audition.

Iron sharpens iron

I’ve been in this industry long enough to know a universal truth: Great developers don’t want to work for managers; they want to work with other great developers. I realise that if I am going to ask you to treat testing as non-negotiable, to dig for the absolute root cause of a bug, and to communicate transparently, I have to prove to you that I do the exact same thing.

When you join the Sprend team, you are not joining an assembly line. You are joining a partnership. This mutual audition is how we ensure you'll succeed in our culture – to understand the full philosophy behind this, I recommend reading about being a developer at Sprend.

What you can expect from me:

  • I will pair program with you. Not to micromanage, but for problems that benefit from doubling up on engineering power.
  • I will shield you from artificial urgency. I meant it when I said we have a ‘no-deadlines’ culture. I will never ask you to push garbage code just to hit an arbitrary launch date.
  • I will leave my ego at the door. If your pragmatic technology choice is better than mine, yours wins.
  • I will obsess over the user with you. We leave the codebase cleaner than we found it, every single day. If you are a developer who takes immense pride in your work, who wants to understand exactly what is going on, and who wants to work alongside someone who feels the exact same way – we should talk.
  • I will generate images with Gemini. But only funny ones.
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