Treehouze

Founding Engineer

Berlin, Germany full-time Mid Salary not listed
full-time Mid level Technology & IT Curated
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About the role

The Role
You’ll work directly with the founders and take ownership of major parts of the product from idea to production.
You will:
Build and ship core product experiences end-to-end across mobile, backend and data.

Turn ambiguous product problems and user needs into simple, pragmatic technical solutions.

Help define technical direction and make decisions around architecture, tools and frameworks.

Own features from initial idea through implementation, release and iteration.

Integrate external services and improve reliability and performance as the product grows.

Use AI development tools extensively to increase speed without lowering the bar for engineering quality.

Help establish the technical foundations and engineering standards we need as Treehouze grows.

What We’re Looking For
We care much more about what you have built and owned than titles, degrees or a specific number of years of experience.
You could be a strong fit if you:
Have shipped real software products and owned meaningful projects end-to-end.

Are a strong generalist who can move comfortably across frontend, backend and product problems.

Have strong engineering fundamentals across APIs, databases and modern software architecture.

Think like a product engineer: you care about users and outcomes as much as the code itself.

Can translate ambiguity into technical decisions and move quickly without waiting for detailed specifications.

Make pragmatic trade-offs and know when something needs to be robust versus simply needs to work.

Use modern AI coding tools as part of your everyday workflow and understand their limitations.

Communicate clearly, challenge assumptions and take responsibility for the outcome.

Experience with consumer or mobile products, early-stage startups, or having built something of your own is a strong plus.
English fluency is required. German is useful, but not required.
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Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Mid
Technology & IT Founding Engineer Technology Mid level full-time

Likely questions

  1. Tell us about work you have done that is close to the Founding Engineer role.
  2. How would you approach your first 30 days at Treehouze?
  3. Which of Founding, Engineer and Technology have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you handle busy days, changing priorities, or pressure at work?

Prepare before the call

  • A recent example that proves your experience with Founding, Engineer and Technology.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Founding Engineer role because I can bring practical experience in Founding, Engineer and Technology, learn the team quickly, and contribute to the outcomes Treehouze needs from this hire.

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