Vorstellungsgespräch-Fragen für Backend-Entwickler 2026

Entwirft APIs, Datenbanken und die Logik hinter der Anwendung.

Häufige Fragen

1. 1. Walk me through a technical system you designed end-to-end. What architecture decisions did you make and why?

   Antwortleitfaden: Frame your answer as context, constraints, alternatives you rejected and a measurable outcome. Speak in metrics (latency, cost, throughput) and acknowledge real trade-offs.

2. 2. Describe the last tough code review you received. How did you process it and what changed in how you write code?

   Antwortleitfaden: Show openness to feedback. Cite the specific observation, what you refactored and the habit you adopted to avoid the pattern going forward.

3. 3. Tell me about a critical production bug that you fixed. How did you isolate it, what tools did you use and what came out of the post-mortem?

   Antwortleitfaden: Walk through detection (alerts, logs, metrics), the first hypothesis you validated and the safeguard you added so it cannot recur silently.

4. 4. When you have to choose between shipping speed and technical quality, how do you balance it?

   Antwortleitfaden: Avoid the political answer. Give a concrete example with explicit trade-offs: business deadline, accumulated tech debt, risk of the change and why you yielded.

5. 5. Why are you interested in this role specifically and not another at similar seniority?

   Antwortleitfaden: Connect three dots: what the company does, the technical problem that excites you and the skill you want to deepen over the next 12-18 months.