Pro practice

Database Reliability Engineer (Fintech) practice interview

Database performance, high availability, recovery, safe schema changes and incident response for financial workloads. Practise the 5 questions interviewers ask for this role with follow-ups. Paid plans add scored feedback on every answer.

Practise with Pro

A Pro practice interview, on the Pro plan from ₦5,000 a month billed yearly, or on Premium.

Mid level
20 minutes
5 questions
Scored feedback on paid plans

About the role

This interview focuses on databases that support balances, payments and other critical fintech records. The panel is looking for measured performance work, tested recovery, safe production changes and calm decisions when data integrity or availability is at risk.

How to prepare

Review query plans, indexing, locks, replication lag and connection management.
Prepare a recovery design with clear recovery objectives and restore testing.
Practise explaining an online schema change and backfill strategy.
Revisit monitoring for storage, latency, replication and failed backups.
Prepare an incident example that includes both technical action and stakeholder communication.

Common mistakes

Assuming a successful backup job proves that restoration will work.
Failing over without considering replication lag and possible data loss.
Adding indexes or constraints to large live tables without testing lock behaviour.
Tuning queries before checking evidence from plans and database metrics.

What to expect

A real first-round interview

5 questions the way interviewers ask for this role, with follow-ups when an answer needs more.

Spoken, like the real thing

Speak your answers in your browser or the free desktop app, with live captions. You can ask the interviewer to repeat anything.

Scored on 4 areas

The things this interview weighs most. With a paid plan, your report shows how you did on each one.

A private report

On Plus, Pro and Premium: every answer scored, your strongest lines quoted and what to say differently next time. Interview creators never see it.

A Pro practice interview, on the Pro plan from ₦5,000 a month billed yearly, or on Premium. Practise with Pro

Engineering