Hiroshi Iwasaki

Led end-to-end development for multiple platforms: a guest-facing hotel & travel booking site (Next.js + TypeScript + Tailwind) with a fast search and checkout, a Node.js/Express backend with PostgreSQL on AWS RDS, Stripe payments, and AWS SES for confirmations; built a calendar availability engine with Redis caching to keep searches under 200ms; containerized services with Docker and deployed on AWS EKS; developed a hotel admin dashboard for bookings, pricing, and refunds. Also delivered a property rental platform (Nuxt 3 + Pinia frontend, FastAPI backend with MongoDB, image uploads via S3/CloudFront), an escrow payment and real-time WebSocket messaging, and a serverless event & seminar booking flow with Lambda + SQS for refunds and notifications.

Built a staffing & outsourcing management platform with a candidate matching dashboard (React + Redux) used by 200+ recruiters; Django REST Framework backend on Azure App Service; implemented a nightly batch job to auto-generate invoices from validated timesheet data with audit trails; added RBAC so clients, candidates, and admins see appropriate data. Also developed an invoice & expense management SaaS with a Vue 3 + Nuxt frontend, a FastAPI backend with MongoDB, Azure Blob Storage for receipts, and a BullMQ + Redis batch ingestion pipeline to process receipts via OCR, plus a multi-step approval workflow with exportable tax reports.

Contributed across three product lines: a job matching & recruitment platform (React frontend, Node.js + Express backend with MySQL on GCP), an AI-assisted resume scorer, and a subscription membership platform (Vue.js frontend, Node.js backend on GCP). Implemented an AI resume matching service, resume parsing, in-app messaging, and interview scheduling; built a bulk-order and B2B payment system with per-user permissions and Stripe-based billing, plus delivery integrations and an analytics dashboard for admins.