Interview
Anduril FDE interview guide
Anduril FDE loops test production engineering under defense constraints: clearance timelines, air-gapped environments, hardware-software systems at the tactical edge, and calm judgment when access and accreditation dominate the critical path.
Defense-tech FDE work rewards engineers who can ship under hostile IT, long security reviews, and incomplete information — without losing the production bar. Confirm travel, clearance status, and coding expectations early with recruiting.
Interview loop matrix
| Stage | What they probe | Format | Pass signal |
|---|---|---|---|
| Recruiter screen | Clearance path, travel, coding bar, mission fit | 30–45 min call | You treat accreditation timelines as first-class risks |
| Coding / technical screen | Software fluency, debugging, systems taste | Timed or live | Correctness under incomplete requirements |
| Constrained systems design | Air-gap, offline bundles, networking, reliability | Whiteboard | Cloud assumptions discarded when environment forbids them |
| Field / mission case | Access delays, operators, thin vertical slice | Ambiguous scenario | Measurable milestone + contingency when access slips |
| Behavioral / judgment | Pressure, ambiguity, stakeholder conflict | Story-driven | Evidence-first triage; no reckless autonomy claims |
| HM / final | Leveling, field intensity fit, communication | Conversation | Clear ownership language for Day-2 operations |
Grading rubric
| Dimension | Strong | Weak |
|---|---|---|
| Constraint realism | Designs for air-gap, delayed access, and accreditation lag | Defaults to unrestricted cloud SaaS patterns |
| Systems rigor | Reliability, observability, and rollback under limited restart windows | Happy-path demos without failure modes |
| Mission judgment | Respects command authority and human gates on high-risk actions | Over-indexes on full autonomy narratives |
| Scope control | Thin vertical slice that survives ops reality | Boils the ocean across platforms and sites |
| Communication | Explains risk clearly to operators and leadership | Hand-waves politics and schedule risk |
| Field ownership | Names Day-2 owners, runbooks, and escalation paths | Stops at “we shipped the binary” |
Red flags
- Treating clearance / ATO as paperwork instead of critical-path engineering
- Proposing continuous cloud dependency in air-gapped environments
- No contingency when data access slips before a milestone
- Ignoring operator workflow and training burden
Worked field scenarios
- Air-gapped delivery: model updates must ship as approved offline bundles — design import, verification, and rollback. See air-gapped LLM playbook.
- Access delayed: promised interfaces miss the window — protect the milestone with a thinner slice and escalate with evidence.
- Autonomy ask: stakeholders want more autonomy than policy allows — define human command gates and auditable decision logs.
Cross-train with system design, behavioral judgment, and clearance FDE careers.
7-day prep plan
- Day 1–2 — Coding + constrained networking / reliability refresh
- Day 3 — Air-gap and offline artifact workflows
- Day 4 — Timed field case with access delay
- Day 5 — Behavioral: pressure + incomplete requirements
- Day 6 — Compare Anduril vs Palantir decomp styles out loud
- Day 7 — Full mock; score on the rubric
Comp context
Directional TC discussions often land around $180K–$380K. Details: Anduril FDE salary hub. Peer defense/enterprise delivery: Scale AI, Palantir.
Related hubs
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