Try the format before launch
Explore a realistic, low-stakes engineering exercise built around investigation and judgment instead of algorithm recall.
Candidate research cohort
Help us test a technical interview that feels more like engineering.
We’re inviting a small group of software engineers to try an early Haeckl experience, work through a TypeScript service issue, and tell us what felt clear, realistic, or frustrating.
Remote · about 65–70 minutes total · applications take about two minutes
What to expect
A short, hands-on product study.
01Work through a 45-minute engineering exerciseUse a browser-based editor, terminal, logs, and tests.
02Share brief feedbackComplete a short survey and a 15-minute debrief.
03Bring TypeScript familiarityProfessional software experience is helpful; algorithm practice is not expected.
Why participate
Get an early look—and help shape what comes next.
This is a chance to experience a different kind of technical interview and put your candidate perspective directly into the product.
Talk directly with the product team
Use the debrief to discuss what felt natural, confusing, or unlike the way engineers actually work.
Influence the candidate experience
Your feedback will inform the tools, instructions, pacing, and expectations we refine for future participants.
Interested in shaping the experience?
Participation is voluntary product research. Details about data collection and your choices are available before you submit an application.