TechFlow Solution Co., Ltd.

Built production-grade web platforms and enterprise services with strong focus on marketplace workflows, microservice-style backend APIs, and scalable frontend architecture. This page summarizes role ownership, project tracks, technology stack, and concrete delivery outcomes.

Role: Full Stack Developer

Apr 2025 - PresentFull Stack Developer2 project tracks

Company Snapshot

Apr 2025 - Present

Role

Full Stack Developer

Overview

Built production-grade web platforms and enterprise services with strong focus on marketplace workflows, microservice-style backend APIs, and scalable frontend architecture.

Project Tracks

2 items

Each track below highlights project context, implementation scope, core technology, and key results.

Project name

E-commerce Marketplace Platform

Scope

Multi-vendor commerce platform for buyers, sellers, and admin operations.

Summary

Built core marketplace capabilities across buyer, seller, and admin domains, including onboarding, KYC, RBAC, storefront routing, and product lifecycle workflows.

Stack

Next.jsNestJSTypeORMAnt DesignBootstrap 5Tailwind CSSCloudflareGoogle Maps API

Detail

  • Built end-to-end responsive UI and REST APIs for auth, profile, store management, and product modules.
  • Implemented dynamic storefront subdomain routing and DNS configuration via Cloudflare.
  • Integrated DBD company data for automated company detail prefill during onboarding.
  • Designed and implemented KYC review workflow with status tracking and admin approval/rejection.
  • Added role-based access control with role/permission management for secure operations.
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Project name

Media Service (File Management API)

Scope

Centralized file management service for internal systems including image processing and secure delivery.

Summary

Developed a shared media API platform with secure S3 delivery, image transformation pipelines, and production-grade API standards for internal service integration.

Stack

Node.jsTypeScriptHonoAWS S3SharpPrismaPostgreSQLZodSwagger/OpenAPIJest

Detail

  • Developed centralized media APIs for upload, retrieval, and access control used across internal services.
  • Integrated AWS S3 with pre-signed URLs and expiration policy for secure file access.
  • Implemented automatic image processing and multi-size variant generation using Sharp.
  • Stored file metadata with Prisma + PostgreSQL to improve query and asset management workflows.
  • Added request validation via Zod, API documentation via Swagger/OpenAPI, and unit tests via Jest.
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