Shabbos Mode

Shabbos Mode

Marketplace automation that pauses and restores seller listings for Shabbat and Jewish holidays across four platforms at once.

4
Platforms automated
100%
Execution reliability

E-commerce merchants selling across multiple major marketplaces needed a reliable way to automate listing dormancy during Shabbat and Jewish holidays without risking listing ranking or inventory sync errors.

Build a central scheduling platform that calculates accurate holiday zmanim (sundown times) by geolocation and automatically switches merchant listings to paused and active states across Amazon, Walmart, eBay, and Etsy.

Location:🇺🇸 USA
Development time:3 MONTHS
Cooperation period:ACTIVE MAINTENANCE

Services used

E-Commerce ToolingProcess AutomationAPI IntegrationsPython/Django

Project Team

LEAD ENGINEER • DJANGO BACKEND DEVELOPER • MARKETPLACE API SPECIALIST • QA ENGINEER

Work Approach

Automated astronomical time calculation
Rate-limited resilient API dispatch

Automated astronomical time calculation

Integrated high-precision astronomical algorithms to determine accurate local sundown and candle lighting times for every seller time zone.

Rate-limited resilient API dispatch

Engineered queuing systems with exponential backoff and rate-limit buffering for Amazon SP-API, Walmart Marketplace API, eBay Trading API, and Etsy API.

Technical Architecture

Core Automation Engine

Core Automation Engine

Backend: Python & Django with Celery task queues
Scheduler: Redis & RabbitMQ event orchestrator
APIs: Amazon SP-API, Walmart Marketplace API, eBay API, Etsy API

Results

Complete Operational Peace of Mind

Complete Operational Peace of Mind

Sellers completely eliminated manual weekly listing adjustments, preventing listing penalties and missed order fulfillments.

Results showcase
4
Platforms automated
100%
Execution reliability
0
Manual hours needed

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