E-commerce development from catalogue to operations
E-commerce engineering connects a fast storefront to the less visible systems that make it dependable: catalogue modelling, pricing, inventory, roles, media delivery, order state, audit logs, deployment, and operational tooling. The work below covers both sides of that boundary.
What the work covers
Capabilities applied together, with the exact trade-offs documented in each case study.
Catalogue and discovery
Product and category schemas, stable slugs, indexed queries, customer segmentation, responsive media, and interfaces designed for quick browsing.
Orders, stock, and money
Order lifecycles, inventory movements, transactional updates, tiered pricing, decimal precision, returns, reconciliation, and payment integration.
Administration and access
Role-based operations, validated forms, audit and performance logs, customer management, content workflows, and secure authentication recovery.
Performance and delivery
Modern image formats, long-lived media caching, database indexes, code splitting, container builds, CI/CD, and health-verified releases.
Relevant case studies3
Real systems, responsibilities, architectural decisions, constraints, and outcomes.
Samwoostore
E-Commerce Platform
- Period
- Sep 2025 - Dec 2025
A full-stack Next.js e-commerce platform for Samwoo with a role-based admin dashboard, Google Cloud Storage media, operational logging, and a containerized CI/CD path to a self-managed Nginx VPS.
- App Router RSC
- Prisma index migrations
- RBAC
DynaPOS
Multi-Tenant SaaS POS Platform
- Period
- Apr 2026 - Jul 2026
A multi-tenant point-of-sale codebase for nine retail and service business types, with scoped roles, FIFO/WAC inventory, local billing, a large BDD specification catalogue, and a SHA-pinned self-hosted delivery path.
- QA automation
- Multi-tenant SaaS
- SHA-pinned delivery
Total Supply
Multi-Role Supply-Chain Platform
- Period
- Nov 2025 - Jan 2026
A multi-role supply-chain platform that lets customers order food and request cleaning or IT-support services, while six coordinated staff roles fulfil and track every job end-to-end through dedicated dashboards.
- RBAC with JWT claims
- OAuth 2.0 / OIDC
- Serverless Postgres
Related engineering notes3
The principles and implementation patterns behind the project work.
- Improving Next.js LCP: A Measured Production Case StudyA production Next.js LCP case study: isolate the real render delay, remove above-the-fold animation gates, compare repeated Lighthouse runs, and state the limits honestly.
- REST API Design Principles That Stand the Test of TimeLearn how to design APIs that developers love to use and are easy to maintain.
- Testing React Apps Without False ConfidenceA boundary-first React testing guide grounded in a 2,117-scenario audit: build reliable unit, integration, and browser tests without false-green results.
Common questions
- Can you build the storefront and the operational backend?
- Yes. Samwoostore combines storefront, administration, API, media, logging, and deployment; DynaPOS and Total Supply add deeper inventory, role, fulfillment, and accounting workflows.
- How do you approach e-commerce performance?
- Start with measured customer paths, then address image delivery, render and bundle cost, caching, database query plans, and third-party scripts without weakening correctness or observability.
- How is inventory consistency handled?
- The exact model depends on the product, but reliable systems use explicit stock movements, transaction boundaries, stable units and precision, idempotent operations, and an audit trail rather than updating a single quantity optimistically.