Driving marketplace growth with Shopify + Amazon integration
A mid-sized German electronics retailer with pan-European
ambitions was constrained by operational inefficiencies.
Outdated syncs between Shopify, Amazon, and ERP caused
overselling, cancellations, and customer frustration. Seller
performance was flagged, and leadership feared losing Buy
Box eligibility — a revenue-critical KPI.
Client: Mid-sized electronics retailer based in Germany, with a growing footprint across Europe.
Platforms: Shopify Plus and Amazon FBM/FBA.
Pain points: Inventory mismatches, overselling, and poor Buy Box performance.
How the client found us
The client initially discovered GetDevDone through a referral from a marketing agency partner we had previously supported on a Shopify migration. At that time, they were evaluating vendors for a critical Amazon integration project. What stood out for them was our commerce-specific expertise and our structured delivery model (Growth Architecture Center), which went beyond “just building APIs” and focused on long-term resilience and governance.
The challenge: growth held back by inefficiencies
The retailer faced issues common to growing European brands:
Overselling & cancellations — 12% of Amazon orders were being canceled due to outdated stock sync between Shopify, ERP, and Amazon. Negative reviews piled up, hurting seller scores.
Reputation risk — Amazon flagged their seller performance, and losing Buy Box eligibility was a looming threat.
Operational inefficiency — employees spent 15–20 hours per week manually reconciling Shopify and Amazon stock.
Limited visibility — leadership could not forecast demand reliably, leading to overstock in slow movers and shortages in best-sellers.
Design
The CEO highlighted in early conversations: “We don’t just need someone to fix an API — we need a partner who understands what these problems mean for our margin, our reputation, and our ability to scale.”
Technology solution
Every engagement began with structured discovery led by our Growth Architecture Center (GAC) — commerce strategists, CX researchers, solution architects, data analysts, and compliance experts.
The GAC conducted:
Stakeholder interviews with IT, operations, and marketplace managers.
Journey mapping of the Amazon fulfillment process from customer click → ERP → warehouse.
Risk analysis around API latency, GDPR compliance, and audit readiness.
Delivered solution
Centralized inventory orchestration using Linnworks to synchronize stock across Shopify Plus, Amazon FBM/FBA, and ERP (SAP Business One). Updates for fast-moving SKUs pushed every 2 minutes.
Data integration pipeline with Fivetran → Snowflake to unify sales, stock, and forecast data.
Dynamic repricing via Feedvisor, ensuring Amazon competitiveness while safeguarding margins.
Security & compliance layer: Datadog monitoring, Cloudflare WAF for API endpoints, GDPR audit logging.
Tech stack
Commerce: Shopify Plus
Marketplace: Amazon FBM/FBA
ERP: SAP Business One
Middleware: Linnworks
Data & warehouse: Fivetran + Snowflake
AI/Forecasting: AWS Forecast, Prophet (Python ML)
Repricing: Feedvisor
Monitoring & security: Datadog, Cloudflare WAF
Compliance: PCI DSS v4.0, GDPR
Business impact
Amazon cancellation rate reduced from 12% → 2% in one quarter.
Buy Box win rate improved by 18%, boosting marketplace visibility and sales.
Stockouts reduced by 40%, improving customer satisfaction.
Operational efficiency: saved ~15–20 staff hours weekly with automated reconciliation.
Leadership gained transparency — Snowflake dashboards now provide executives with predictive visibility across Shopify and Amazon.
Design
The COO commented after launch: “We now have full trust in our stock data. Before, we were firefighting every week. Now, I can see in one dashboard how inventory, sales, and forecasting align — and plan ahead instead of cleaning up.”
Why collaboration mattered
What the client valued most was not just the technology but how the collaboration was run:
Transparency: weekly review cycles with business + IT leaders.
Audit readiness: compliance evidence packs prepared for both GDPR and PCI DSS.
Knowledge transfer: operational staff trained to manage reconciliations and dashboards without reliance on developers.
Scalability: GAC showed a roadmap for future growth (expansion into Zalando and Walmart marketplaces).
This gave executives confidence that GetDevDone wasn’t only fixing today’s pain — but building infrastructure for long-term competitiveness.
Future growth roadmap
The client is now piloting digital twins for inventory optimization, simulating seasonal demand and logistics disruptions before they occur. Expansion into Walmart Marketplace and Zalando is planned under the same governance framework.
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