Junior (1–3 years) · Module B
API Security: HMAC Signatures & Rate Limiting
Proving a request wasn't tampered with, and designing sane throttling.
What this session covers
- HMAC proves integrity and authenticity: hash the payload plus a shared secret, send the hash, let the receiver recompute and compare.
3 more key points, the audio walkthrough and the diagram are in the full session, which unlocks with any paid plan.
What junior FDE interviews look for
Junior Forward Deployed Engineer interviews go deeper on integration fundamentals — REST API design, OAuth2, webhooks, data mapping and SQL — and add customer-facing scenarios such as running a technical discovery call or handling pushback on what your API can do.