React developer for complex product interfaces
My React work focuses on interfaces that carry real operational state: dashboards, permissions, multi-step workflows, offline behavior, data-heavy forms, and reusable component systems. The goal is a UI that stays predictable as the product grows.
What the work covers
Capabilities applied together, with the exact trade-offs documented in each case study.
Component architecture
Feature-aligned components, shared primitives, clear ownership of state and effects, and design-system decisions that reduce inconsistency without hiding product intent.
Typed state and data
TypeScript, Redux Toolkit, RTK Query, TanStack Query, runtime validation, and explicit DTO-to-domain boundaries for safer change.
Workflow and access UX
Role-segmented navigation, permission gates, forms, uploads, resilient authentication, optimistic or cache-aware updates, and accessible interaction patterns.
Confidence in change
Unit, integration, and end-to-end testing applied to critical paths, with performance and maintainability considered alongside feature delivery.
Relevant case studies5
Real systems, responsibilities, architectural decisions, constraints, and outcomes.
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
PharmaConnect
Telehealth & Prescription Platform
- Period
- Jan 2025 - Apr 2025
A multi-surface telehealth system connecting appointments, consultations, prescriptions, notifications, clinical notes, and AI-assisted functions through NestJS, Next.js, Expo, and MySQL.
- GPT-4o Vision extraction
- Additive AI merges
- Zoom OAuth
Internify
Intern Tracking System
- Period
- Jun 2024 - Sep 2024
A React/Vite/TypeScript student recruitment portal for the ITS Batch 21 program, with a multi-round company application flow for students and a CSV-driven admin dashboard for managing the student roster.
- React + TypeScript
- SPA routing
- Vite tooling
X-POS
Cross-Platform Point-of-Sale App
- Period
- Feb 2026 - Feb 2026
A cross-platform (iOS / Android / web) point-of-sale app for electronics-retail staff to ring up sales, manage stock, and process returns, with role-based access spanning cashier through super-admin.
- Cross-platform POS
- Refresh-token rotation
- RBAC
RAG Release
Digital Publishing Capstone
- Period
- Sep 2024 - Sep 2025
A digital-publishing capstone that prototypes a role-oriented manuscript workspace and authentication foundation while documenting a broader marketplace architecture that remains partially implemented.
- 28-route workspace
- Authentication service
- 80-page SRS
Related engineering notes3
The principles and implementation patterns behind the project work.
- 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.
- Building Scalable Design Systems with React and TailwindA comprehensive guide to creating maintainable design systems that scale with your team and product.
- TypeScript Best Practices for Clean, Maintainable CodePractical TypeScript best practices for strict configuration, runtime validation, discriminated unions, safe errors, and maintainable API boundaries.
Common questions
- Do you build both React web and mobile interfaces?
- Yes. The evidence includes Next.js and Vite web applications as well as React Native and Expo products such as X-POS and Attendify.
- How do you manage complex client state?
- State is separated by ownership: local interaction state stays local, server state uses query and cache tools, and cross-product state is introduced only where several surfaces genuinely share it.
- How do you keep a React codebase maintainable?
- I use typed boundaries, feature-oriented organization, reusable primitives, predictable data flow, and tests around the paths whose failure would matter to users or operations.