Hüseyin Tunay Çelik
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Engineering case study / Full-stack

PazarPilot.

One workspace. Multiple marketplaces.

My contributionSolo product development · Nest2Move
Project statusInternship build · integration clients implemented

01 / The problem

What needed solving.

Selling across Trendyol and Hepsiburada means coordinating listings, stock, orders and shipping across separate systems. PazarPilot brings those operations into a shared workspace.

02 / How it fits together

  1. 01Trendyol / Hepsiburada
  2. 02Marketplace adapters
  3. 03Orders + stock + rules
  4. 04Operations panel

03 / Engineering decisions

01

Make a marketplace an adapter

Each channel sits behind a shared adapter interface. I implemented REST clients with OAuth token refresh and retry logic for listing and order synchronisation across two marketplace platforms; adding a channel does not require a rewrite of the product.

02

Connect the operational details

The panel combines listing management, orders, stock locations, inventory movements and stock overview. A shipping carrier API supports shipment creation, label generation and status tracking.

03

Surface exceptions

A rule engine raises alerts for critical stock, cross-channel price mismatches and sync failures. The intent is to help the operator find issues that need attention.

04 / Where it stands

Built during the six-month Nest2Move internship, with Docker and Docker Compose environments. Marketplace API clients and shipping workflows were implemented; production seller rollout has not been verified for this case study.

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