1 · Forward Deployed Engineer / Applied AI Engineer
The biggest cluster in the entire dataset, and the one with the least prep material written for it.
What the job actually is
You are embedded with a customer, and you write the code that makes a general model work inside their specific mess — their schemas, their auth, their compliance boundary, their idea of what "correct" means. Roughly half the work is engineering and half is consulting: figuring out what the customer actually needs versus what they asked for. The role exists because frontier models are general and enterprises are not, and that gap does not close by writing better documentation.
Titles this hides behind
Who is hiring it
OpenAI, Anthropic, Palantir, Sierra, Harvey, Glean, Scale AI, Writer, Instabase, ElevenLabs. Frequently split by vertical — financial services, public sector, healthcare and life sciences, retail, manufacturing, media and games — which is a useful signal: pick the vertical where you already speak the language. In India the same shape appears at Sarvam, Turing and Observe.AI.
How to recognise it in a JD
Look for customer-facing, onsite, travel,
stakeholder, engagement, ambiguity, and
prototype to production. If the requirements list names a vertical
industry before it names a language, you are reading an FDE posting regardless of
what the title says.
The loop
Five to eight stages across three to six weeks. At OpenAI and Palantir, roughly half the total evaluation weight sits on non-coding rounds.
Prepare like this
- Build one agent against genuinely messy data — not a clean demo dataset. Inconsistent schemas, missing fields, three date formats. The stories that land in the case study round come from having actually hit this.
- Practise scoping out loud, on a timer. Take a one-line business problem, spend 45 minutes talking through decomposition to a recording. Listen back. Most candidates fail this round by solving too early rather than by solving wrong.
- Prepare three "they asked for X, the real problem was Y" stories with the discovery moment in each, and what it cost to have found it late.
- Be able to whiteboard an enterprise integration: where the data lives, how auth flows, what happens to PII, what the latency budget is, who pays for tokens, and what runs inside their VPC.
- Know the failure modes cold — retrieval returning plausible-wrong context, tool calls failing silently, cost blowing up on retries.
Be ready for
- "A customer says the model is wrong 30% of the time. What do you do first?" They want you to ask what "wrong" means and how it was measured, before proposing anything.
- "You have two weeks and an executive demo. What do you cut?" Testing whether you scope to a demonstrable slice or promise everything.
- "The customer's data is far worse than they told us. Walk me through the conversation." Testing whether you can deliver bad news without either sugar-coating or blaming.
- "How would you know this deployment succeeded, six months from now?" Testing whether you think in outcomes or in shipped features.
Red flags in the posting
Pre-sales in disguise. If the JD never mentions a codebase, code review, or shipping, this is a solutions consultant with an engineering title and an engineering interview but not an engineering career path.
Unbounded travel. "Travel as needed" with no percentage. Ask for the number in the recruiter screen; a real answer is 20–40%, and evasion is informative.
No engineering manager in the loop. If every interviewer is from sales or customer success, your performance reviews will be too.