E-Commerce
Also known as: Ecommerce · Online retail · DTC
E-commerce engineering covers the storefront, checkout, catalogue, payment, fulfilment, and post-purchase surfaces of online retail. The architectural pressure is the inverse of FinTech: latency-to-conversion is a measured business KPI, the catalogue is read-heavy with cache-friendly shapes, and the checkout has to be both fast and idempotent across retries. TantraDev's e-commerce work is usually a headless re-platforming — separating the storefront (Next.js, edge-cached) from the commerce layer.
In production at TantraDev.
Concepts that travel with this one.
Architecture rarely lives in isolation — these are the terms that come up in the same conversation.
Next.js
Next.js is Vercel's React framework with file-based routing, server components, route-level data fetching, and edge-runnable middleware. TantraDev ships Next.js for marketing surfaces, dashboards, and customer-facing storefronts where SEO, server-rendering, and developer ergonomics need to coexist. This site itself is a Next.js App Router build.
GraphQL
GraphQL is a query language for APIs where the client specifies what fields it needs and the server returns exactly that shape. TantraDev uses GraphQL where the client surface is varied (web, iOS, Android, an internal admin) and the over-fetch / under-fetch tax of REST starts costing real bandwidth. We default to REST for service-to-service and GraphQL at the BFF or storefront edge.
Elasticsearch
Elasticsearch is a distributed Lucene-based search engine — the de-facto choice for full-text search, log aggregation, and faceted filtering at scale. TantraDev uses Elasticsearch (or OpenSearch where licensing matters) when full-text relevance, aggregation, and near-real-time indexing all have to coexist. For pure log search the calculus is different — Loki or ClickHouse often wins on cost.
Building a system where E-Commerce is the load-bearing decision?
30 minutes on the phone, one page in your inbox — what to build, what to skip, what it will cost. You keep the audit even if we are not the right fit.