API Integration Developer (Entry Level) practice interview
Building and troubleshooting secure API connections for payment initiation, verification and transaction status updates. Practise the 5 questions interviewers ask for this role with follow-ups. Paid plans add scored feedback on every answer.
Free with an Intaviu account: 320 credits a month, at 10 credits a minute of practice. Private: interview creators never see them.
- Junior
- 15 minutes
- 5 questions
- Scored feedback on paid plans
About the role
This interview tests how you connect software to payment and financial services through APIs. The panel is looking for sound HTTP knowledge, careful handling of credentials and transactions, and a methodical approach to integration faults.
How to prepare
- Revise HTTP methods, status codes, headers, JSON payloads and common authentication methods.
- Practise tracing a failed request through client logs, API logs and webhook delivery records.
- Learn why idempotency, timeouts and retry rules matter when money is moving.
- Prepare an example of an API you built, consumed or tested and explain your contribution.
- Review how to keep secrets and sensitive customer data out of source control and logs.
Common mistakes
- Treating every successful HTTP response as proof that the financial transaction completed.
- Suggesting blind retries without considering duplicate charges or transfers.
- Ignoring authentication, signature checks or sensitive information in logs.
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.
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