Industry 4.0 vs Industry 5.0: The Evolution from Smart Factories to Human-Centric Manufacturing
Industry 4.0 vs Industry 5.0: The Evolution from Smart Factories to Human-Centric Manufacturing The industrial landscap...
One workspace that connects every marketplace you sell on—then keeps listings, orders, inventory, ads, and finance moving together. Prefer a custom ecommerce stack or your own SaaS? Our engineers build those too.
One workspace for the work that slows sellers down—open the live demo when you present to a client.
Live product demo
Custom integrations
Production coverage
Use our product, hire us for ecommerce engineering, or ship your own SaaS—pick the path that matches how you buy.
Since 2020, Coretech3 has shipped marketplace software—SellerGroww for sellers who want a ready workspace, custom ecommerce for brands that need their own stack, and SaaS builds for teams who want a product of their own.
Amazon SP-API and Advertising API depth sits under all three offers. We align roadmaps around measurable outcomes—inventory truth, reconciliation you can defend, and releases that roll forward safely.
Who we support
Operational rigor and Amazon domain knowledge—so integrations survive rate limits, peak season, and production audits.
Backoff, retries, idempotency, and quota budgeting designed around SP-API constraints—not bolted on after launch.
Alerts, dashboards, and incident playbooks for critical jobs—so ops teams know before sellers do.
Secure connectors to your ERP, WMS, data warehouse, or internal tools—with OAuth and token lifecycle handled.
Bulk campaign operations, bid workflows, and reporting pipelines grounded in merchant data—not spreadsheet exports.
SellerGroww for marketplace ops, ecommerce engineering for custom commerce stacks, and SaaS development when you want your own product—Amazon SP-API and Ads when those channels matter.
Six clear phases—transparent scope, predictable milestones, and engineering you can talk to.
Goals, constraints, systems map, and success metrics documented up front.
Roadmap, estimates, and phased delivery aligned with your stakeholders.
UX where it matters, APIs and automation where it counts—reviewed continuously.
Functional, integration, and performance checks before production traffic.
Controlled rollout, monitoring, and handover so ops stays calm.
Ongoing improvements, incident response, and roadmap iterations.
Outcome themes we see across Amazon automation engagements—your results depend on scope and starting point.
Inventory and financial data you can defend in audits and ops reviews
Architected for SP-API limits, retries, and idempotency under load
Fewer spreadsheets and manual listing updates across marketplaces
Monitoring, alerts, and runbooks that shorten mean time to recovery
Themes we hear from agency, seller, and SaaS partners—names withheld when teams prefer not to be quoted publicly. See portfolio vignettes →
Our Ads API rollup cut weekly reporting time dramatically—account managers finally spend the hours on strategy instead of CSV exports.
Amazon services agency · United States
Stock discrepancies between Amazon.co.uk and our ERP dropped after they rebuilt the sync with proper reconciliation—not another fragile script.
Private-label seller · United Kingdom
When feeds broke during a US peak week, turnaround was fast. That mattered more than slide decks.
Retail brand · US
Strong mix of marketplace domain knowledge and solid software practice—reviews were technical, not hand-wavy.
Marketplace SaaS · Remote
Fresh writing from our team on Amazon automation, marketplace operations, and engineering best practices.
Industry 4.0 vs Industry 5.0: The Evolution from Smart Factories to Human-Centric Manufacturing The industrial landscap...
As Amazon marketplace businesses scale, managing Catalog, Inventory, Advertising, and Orders manually becomes increasing...
Modern applications process thousands or even millions of events every day. Whether it's an e-commerce platform, a banki...
Open the live product demo, or talk with engineers about custom ecommerce stacks and SaaS builds—clear scopes, Amazon depth when you need it, and direct access to the people who ship.
