Walk me through your background + your path into supply chain.

What it tests: Story arc - quantitative / analytical training + plant + supplier exposure + concrete S&OP or sourcing work. Interviewers screen for candidates whose path lands on industrial supply chain as deliberate, not default.

Tell me about a supply chain project you've owned end-to-end.

What it tests: Planning + supplier + plant rigor. Can the candidate walk problem framing -> data -> action -> sustained outcome cleanly across cross-functional stakeholders.

Why industrial supply chain vs consulting, finance, or consumer / retail supply chain?

What it tests: Authentic alignment - tangible product, plant-floor stakes, long lead-time + capital-intensive supplier base, engineering + commercial intersection.

Why supply chain specifically vs operations, engineering, finance, or commercial roles?

What it tests: Specificity. Generic 'I like analytics' or 'I like supply chain because it's important' fails.

What it tests: Real homework - product / plant footprint + recent strategic moves + supply chain culture + tooling - not 'great brand'.

What's your read on our product portfolio and plant footprint?

What it tests: Industry literacy - product mix, plant geography, manufacturing mode, recent capex, where the supply chain team likely focuses.

Tell me what you understand about our supply chain organization and recent strategic moves.

What it tests: Engineering + maturity awareness - S&OP / IBP cadence, planning tooling, supplier strategy, recent nearshoring / dual-source / cost-out programs.

Walk me through how you'd run or improve an S&OP cycle for a multi-plant business.

What it tests: S&OP fluency + cross-functional instinct - can the candidate frame the five-step cadence, name the data flows, identify the common failure modes, and tie demand signal to supply commitment.

Supply Chain interview prep.

Trained on planner / buyer / S&OP lead / materials manager / category sourcing / plant supply chain manager / director-of-supply-chain interviews across capital equipment, industrial components, MRO, machinery, motion + fluid power, electrical, building products.

What interviewers look for

Can the candidate run a credible S&OP cycle - demand review, supply review, integrated reconciliation, executive S&OP?
Do they understand inventory mechanics - safety stock formula, ABC / XYZ segmentation, working-capital impact?
Are they fluent in supplier strategy - dual-sourcing, should-cost, RFQ, qualification, NPI ramp?
Can they walk plant materials flow - MRP, kanban, lineside, milk-run, kitting - not just planning math?
Do they think commercially - PPV, productivity, VAVE, total cost of ownership beyond unit price?
Are they grounded in supply continuity + risk - Tier-N mapping, geopolitical, tariffs, force majeure?
Can they navigate cross-functional with engineering, operations, finance, commercial, quality?
Long-game fit - planner / senior / manager / director / VP supply chain trajectory?

Behavioural questions to expect

Walk me through your background + your path into supply chain.
What it tests: Story arc - quantitative / analytical training + plant + supplier exposure + concrete S&OP or sourcing work. Interviewers screen for candidates whose path lands on industrial supply chain as deliberate, not default.
Tell me about a supply chain project you've owned end-to-end.
What it tests: Planning + supplier + plant rigor. Can the candidate walk problem framing -> data -> action -> sustained outcome cleanly across cross-functional stakeholders.
Why industrial supply chain vs consulting, finance, or consumer / retail supply chain?
What it tests: Authentic alignment - tangible product, plant-floor stakes, long lead-time + capital-intensive supplier base, engineering + commercial intersection.
Why supply chain specifically vs operations, engineering, finance, or commercial roles?
What it tests: Specificity. Generic 'I like analytics' or 'I like supply chain because it's important' fails.
Why this firm?
What it tests: Real homework - product / plant footprint + recent strategic moves + supply chain culture + tooling - not 'great brand'.
What's your read on our product portfolio and plant footprint?
What it tests: Industry literacy - product mix, plant geography, manufacturing mode, recent capex, where the supply chain team likely focuses.
Tell me what you understand about our supply chain organization and recent strategic moves.
What it tests: Engineering + maturity awareness - S&OP / IBP cadence, planning tooling, supplier strategy, recent nearshoring / dual-source / cost-out programs.
Walk me through how you'd run or improve an S&OP cycle for a multi-plant business.
What it tests: S&OP fluency + cross-functional instinct - can the candidate frame the five-step cadence, name the data flows, identify the common failure modes, and tie demand signal to supply commitment.

Technical concepts to master

S&OP + demand planning fundamentals

S&OP vs IBP: S&OP = monthly demand + supply alignment cycle (5-step cadence); IBP (Integrated Business Planning) = S&OP extended with financial + strategic horizon + scenario planning.
Statistical forecast methods: Holt-Winters (level + trend + seasonality), ARIMA (autoregressive integrated moving average), Croston (intermittent demand), ML (gradient-boosted / neural) - chosen by demand pattern.
MAPE + bias + FVA: MAPE = mean absolute percent error (accuracy); bias = systematic over- or under-forecast; FVA = forecast value-add (does each step improve accuracy or destroy it).
MRP / MPS / BOM: MPS (Master Production Schedule) = approved production plan; MRP (Material Requirements Planning) = explodes MPS through BOM (Bill of Materials) to order requirements.

Supplier strategy + should-cost

Dual-source vs single-source vs sole-source: Dual-source = two qualified suppliers per part (resilience + leverage); single-source = chose to use one of multiple available; sole-source = only one supplier exists.
Should-cost analysis: Build-up of part cost = material + labor + overhead + SG&A + margin, benchmarked vs current quote to expose negotiation lever.
RFQ + RFP + RFI discipline: RFI (Request for Information) = market sensing; RFQ (Request for Quote) = price + terms for defined spec; RFP (Request for Proposal) = solution-oriented (commercial + technical).
Supplier qualification - PPAP / FAI: PPAP (Production Part Approval Process, AIAG standard) = 18-element supplier approval package for production parts; FAI (First Article Inspection) = dimensional + functional verification before mass production.

Inventory + working capital mechanics

Safety stock formula: Safety stock = z * sigma * sqrt(L), where z = service-level factor (1.65 at 95%, 2.33 at 99%), sigma = demand variability standard deviation, L = lead time. Extended to include lead-time variability.
EOQ + lot-sizing: EOQ = sqrt(2 * D * S / H), where D = annual demand, S = order setup cost, H = annual holding cost per unit. Trade-off between order cost + holding cost.
DOS + DSI + CCC: DOS (Days of Supply) = inventory $ / average daily COGS at SKU / category level; DSI (Days Sales of Inventory) = balance sheet equivalent; CCC (Cash Conversion Cycle) = DSI + DSO - DPO.
Lean inventory levers - kanban / VMI / JIT: Kanban = visual signal-based replenishment (two-bin, electronic); VMI (Vendor-Managed Inventory) = supplier replenishes to agreed levels; JIT = sequenced lineside delivery.

Supply continuity + risk + trade

Tier-N mapping + transparency: Tier-1 = direct suppliers; Tier-2 = their suppliers; Tier-N = sub-tier mapping for critical components / commodities. Mapped via supplier questionnaire, third-party tools, on-site visits.
Geopolitical + concentration risk: China + Taiwan concentration in electronics, rare earth, magnets; Russia / Ukraine in nickel, neon, palladium; Mexico in components; single-country dependency = risk.
Tariffs + trade - Section 301 + USMCA + CBAM: Section 301 (US tariffs on China imports, 7.5-25%+); USMCA (US-Mexico-Canada agreement, rules of origin for tariff-free); CBAM (EU Carbon Border Adjustment Mechanism, carbon tariff on imports).
Nearshoring / reshoring / friend-shoring: Nearshoring = moving supply closer to consumption market (China -> Mexico for US); reshoring = back to home country; friend-shoring = to geopolitically-aligned countries.

Practical drills

You manage a category with $50M annual COGS, current DOS of 60 days, target service level 98%. Lead time averages 6 weeks with 1-week std deviation. Weekly demand averages $1M with $200K std deviation. Recalibrate safety stock + project working capital release if you move target service to 97% + reduce lead-time variability to 0.5 weeks via supplier-development. Show your numbers.
A $2B industrial OEM with 6 plants runs a poorly-functioning S&OP - demand review skipped most months, supply review focused on weekly fire-fighting, no executive S&OP, plant managers sandbag the supply plan. MAPE running 35% at family level, OTIF stuck at 88%, inventory 75 DOS. CSCO asks you to redesign. Walk me through your approach and 12-month roadmap.
Your company sources $80M of machined components and electronic sub-assemblies from China, with 12-week ocean transit + 6-week supplier lead time. Recent tariff increase to 25% on Section 301 list adds $20M COGS. CSCO asks whether to nearshore to Mexico, dual-source US, or stay + absorb. Walk me through how you'd structure the decision and what additional data you'd need.

Smart-question anchors

Supply chain org - centralized vs plant-led, CSCO presence + reporting line, central vs plant talent paths
S&OP / IBP maturity - cadence, executive S&OP teeth, tooling roadmap (Kinaxis / o9 / enterprise ERP IBP)
Supplier strategy + recent moves - nearshoring, dual-source program, supplier consolidation, supplier-development
Working capital + inventory targets - DOS / DSI / CCC trajectory, recent cash-out programs
Cost-out + productivity culture - VAVE program maturity, annual productivity target, PPV governance

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