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From internal operational infrastructure to publicly available enterprise SaaS, we design, engineer, and operate specialized technology platforms that automate complex workflows.
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eSellerOps — The FBA Operating System
Deterministic Financial Modeling & Reverse Sourcing Engine for Amazon FBA Wholesale & Arbitrage
eSellerOps is our flagship SaaS operating system developed and operated under Stupers International Inc. It replaces synthetic estimates with true-profit deterministic modeling, exact Amazon Selling Partner API (SP-API) fee calculations, per-seller ASIN gating verification, and live Keepa market data.
Key Technical & Operational Pillars
True Landed Cost EngineComputes FBA fulfillment fees, referral percentages, storage costs, and prep fees with zero approximations
Live Keepa & SP-API IntegrationDirect real-time pipeline checking ASIN restrictions (getListingsRestrictions) and exact fee schedules (getMyFeesEstimate)
Reverse Sourcing Storefront CatalogExtract, analyze, and cross-reference competitor storefronts and supplier price list CSVs in seconds
Enterprise Data ProtectionIsolated cloud PostgreSQL clusters with Row-Level Security (RLS) and AES-256 / TLS 1.3 encryption standards
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