Next.js developer for reliable product systems
I use Next.js as an application platform, not only a page renderer. That means making deliberate server and client boundaries, protecting data access, keeping bundles and rendering work under control, and designing deployment behavior alongside the product architecture.
What the work covers
Capabilities applied together, with the exact trade-offs documented in each case study.
App Router architecture
Server and Client Components, route handlers, layouts, caching boundaries, metadata, and feature-oriented code organization chosen around real workflows.
Authentication and data
NextAuth/Auth.js, RBAC, tenant-aware Prisma access, PostgreSQL migrations, validated API boundaries, and transactional business operations.
Performance
Image delivery, code splitting, package tree-shaking, route-scoped assets, rendering choices, and Core Web Vitals treated as product constraints.
Delivery
Vercel and container deployments, CI gates, health verification, environment discipline, and production migrations that can move forward safely.
Relevant case studies4
Real systems, responsibilities, architectural decisions, constraints, and outcomes.
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
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
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
Prompt Copilot
Cross-Surface AI Prompt Manager
- Period
- Feb 2026 - Mar 2026
A cross-surface prompt-management ecosystem — a Next.js 15 dashboard, a Chrome MV3 extension, and a VS Code extension on one Prisma/PostgreSQL API — that lets developers organise, version, and one-click-insert reusable AI prompts into ChatGPT, Claude, Gemini, Perplexity, and the IDE.
- Chrome MV3
- VS Code Webview
- Self-referencing hierarchies
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.
- TypeScript Best Practices for Clean, Maintainable CodePractical TypeScript best practices for strict configuration, runtime validation, discriminated unions, safe errors, and maintainable API boundaries.
- REST API Design Principles That Stand the Test of TimeLearn how to design APIs that developers love to use and are easy to maintain.
Common questions
- Which Next.js architecture do you use?
- Recent work uses the App Router with explicit Server and Client Component boundaries. The exact choices vary by product, and the linked case studies record them per system.
- Can Next.js support complex SaaS and commerce workflows?
- Yes, when authorization, transactions, background work, cache behavior, and deployment constraints are designed explicitly. DynaPOS, Total Supply, Samwoostore, and Prompt Copilot demonstrate different versions of that architecture.
- Do you optimize existing Next.js applications?
- The work includes App Router migration, route-scoped heavy assets, dynamic code splitting, image delivery, database indexing, and deployment changes. Any optimization starts with measured bottlenecks rather than a generic checklist.