Supply Chain interview prep.

Trained on demand planner / supply planner / S&OP lead / customer-service lead / deployment planner / co-man manager / supply chain manager / director-of-supply-chain interviews across snacks, beverages, dairy, frozen, packaged grocery, confectionery, bakery, meat, alt-protein.

What interviewers look for

  • Can the candidate run a credible CPG S&OP cycle - demand, supply, finance / trade-spend integration, executive S&OP?
  • Do they understand retailer service mechanics - OTIF, OSA, perfect order, fine + chargeback economics?
  • Are they fluent in promo + new-item planning - lift modelling, cannibalisation, phase-in / phase-out?
  • Can they manage SKU complexity - tail rationalization, cube + density, slow-mover discipline?
  • Do they think commercially - trade-spend, working capital, days-on-hand at retailer, gross-to-net?
  • Are they grounded in food safety + cold chain - FSMA, HACCP, FEFO, recall readiness, shelf-life management?
  • Can they navigate cross-functional with sales, marketing, finance, R&D, quality, co-mans + 3PLs?
  • Long-game fit - planner / senior / manager / director / VP supply chain trajectory?

Behavioural questions to expect

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

    What it tests: Story arc - quantitative / analytical training + plant / co-man / retailer exposure + concrete S&OP or service work. Interviewers screen for candidates whose path lands on CPG supply chain as deliberate, not default - tangible product, retailer pace, promo + new-item complexity matter to them.

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

    What it tests: Planning + retailer + commercial rigor. Can the candidate walk problem framing -> data -> action -> sustained outcome cleanly across sales, finance, brand, plant, co-man stakeholders.

  3. Why CPG food + beverage supply chain vs industrial, retail-side, or consulting?

    What it tests: Authentic alignment - tangible product on shelf, retailer service pace, promo + new-item rhythm, brand-finance-plant intersection.

  4. Why supply chain specifically vs sales, brand, finance, or operations roles?

    What it tests: Specificity. Generic 'I like analytics' or 'supply chain is hot post-COVID' fails.

  5. Why this firm?

    What it tests: Real homework - category portfolio + channel mix + recent strategic moves + supply chain culture + tooling - not 'great brand'.

  6. What's your read on our brand portfolio and channel mix?

    What it tests: Industry literacy - category + brand mix, channel concentration, shelf-stable vs refrigerated vs frozen split, where the supply chain team likely focuses.

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

    What it tests: Engineering + maturity awareness - S&OP / IBP cadence, planning tooling, network footprint, recent co-man / network / sustainability moves.

  8. Walk me through how you'd run or improve an S&OP / IBP cycle for a multi-brand CPG business.

    What it tests: S&OP fluency + commercial instinct - can the candidate frame the cadence, integrate trade-spend + brand plan, identify common failure modes, and tie demand signal to supply + financial commitment.

Technical concepts to master

S&OP / IBP + demand planning fundamentals (CPG)

S&OP vs IBP (CPG flavour)
S&OP = monthly demand + supply alignment cycle (5-step cadence); IBP (Integrated Business Planning) = S&OP extended with financial + brand + trade-spend horizon + scenario planning.
Statistical forecast + commercial overlay
Statistical baseline (Holt-Winters, ARIMA, ML / gradient-boosted) plus commercial overlay (sales + RGM + brand + promo + new-item) - rarely good alone in CPG.
MAPE + bias + FVA + promo forecast accuracy
MAPE = mean absolute percent error (accuracy); bias = systematic over / under-forecast; FVA = forecast value-add; promo forecast accuracy = lift forecast vs actual.
Demand sensing - POS + syndicated data
Use POS scanner data (retailer DEX / 852, Nielsen, Circana / IRI) to sense demand sooner than shipments - improves lead-edge forecast.

Retailer service + OTIF + perfect order

OTIF (On-Time + In-Full)
Standard retailer service metric - % of cases / orders delivered on the scheduled appointment window + at full ordered quantity.
Perfect order
% orders meeting all four conditions - on-time + in-full + damage-free + correct documentation + correct invoice.
On-shelf availability (OSA) + voids
% time SKU is available at shelf during store hours; voids = SKU authorized but not on shelf; out-of-stocks = SKU temporarily missing.
Fines + chargebacks + deductions
Retailer charges for service failures - OTIF fines (per case), administrative chargebacks (per occurrence), invoice deductions (% or $).

Promo + new-item + SKU complexity

Promo lift + cannibalisation
Lift = promoted volume / baseline volume; typical TPR (Temporary Price Reduction) 1.5-3x, display 3-5x, feature + display 5-10x for snacks / beverage. Cannibalisation = volume stolen from own SKUs or pull-forward.
New-item launch + phase-in
New-item ramp - initial pipeline fill, retailer authorisation count, distribution build curve, velocity ramp; typical 6-12 month build for full distribution.
Phase-out + EOL discipline
End-of-life management - sell-through plan, retailer notification, alternate-SKU offer, residual inventory + packaging disposition, plant changeover.
SKU rationalization + Pareto tail
Pareto curve typical 80 / 20 - top 20% of SKUs drive 80% of revenue; tail = bottom 50-70% of SKUs at low velocity + margin contribution.

Cold chain + shelf-life + food safety

Shelf-life + days-on-hand discipline
Each SKU has stated shelf-life (e.g. 30 / 60 / 180 / 365 days); retailers require a minimum % remaining shelf-life at receipt (typical 60-75% for shelf-stable, higher for refrigerated).
Cold chain integrity
Refrigerated (~2-8 deg C) + frozen (~ -18 deg C and below) products require unbroken temperature control - plant, transport, DC, retailer DC, retailer store.
FSMA + food safety modernisation
FDA Food Safety Modernization Act (2011) - preventive controls (Rule 117), produce safety (Rule 112), traceability (Rule 204, effective 2026), foreign supplier verification.
HACCP + SQF + BRC
HACCP (Hazard Analysis Critical Control Point) - mandatory food safety methodology; SQF (Safe Quality Food) + BRC (British Retail Consortium) - GFSI-recognized certification standards.

Practical drills

  • You're planning a 4-week feature + display promo on a snack SKU. Baseline weekly volume = 100K cases. Expected lift factor 6x (display + feature). Cannibalisation from own SKUs estimated 15% of incremental, pull-forward 10% of incremental. SKU has 180-day shelf life; retailer requires 75% remaining at receipt. Plant produces in 50K-case batches with 2-week lead time. Calculate net incremental cases, pipeline build, and post-promo residual risk. Show your numbers.
  • A $3B CPG snacks + beverages business with 8 brands + 4 plants + 6 co-mans runs a broken S&OP - demand review dominated by sales overlay (bias persistently +8%), supply review focused on weekly OTIF fire-fighting, finance integration absent, no executive S&OP. MAPE 35% at brand-month, retailer OTIF 91% (vs top mass-retailer 98% standard), days-on-hand 72 at plant + 18 at retailer DC, fines + chargebacks running $25M / year. CSCO asks you to redesign. Walk me through your approach + 12-month roadmap.
  • Your top retailer (representing 25% of revenue) has just notified you that OTIF performance on your snacks portfolio has dropped from 96% to 89% over the past quarter. Fines + chargebacks have spiked to $4M / quarter (vs $1M baseline). The retailer category manager is escalating + threatening shelf-space reduction. Walk me through how you'd diagnose + recover + structure the customer-team partnership.

Smart-question anchors

  • Supply chain org - centralised vs BU-led, CSCO presence + reporting line, central vs BU talent paths
  • S&OP / IBP maturity - cadence, executive S&OP teeth, tooling roadmap (Kinaxis / o9 / Blue Yonder / Anaplan)
  • Retailer service posture - OTIF trajectory, top-retailer scorecard standing, fine + chargeback governance
  • Promo + new-item rhythm - innovation rate, RGM + trade-spend integration, launch + EOL discipline
  • Working capital + days-on-hand - cash-conversion-cycle trajectory, retailer DOH targets, recent cash-out programs

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