Back End Developer

InstaSupply

• Role : Backend Engineer (Node.js)Type : Full-time Contract (4 months)Location : Remote (India)Start Date : ImmediateCompany : InstaSupply (Construction supply + logistics platform)About the ProjectInstaSupply is building a full marketplace ecosystem for construction materials :
• Customer app
• Supplier app
• Driver app
• Admin system
• Real-time delivery tracking
• AI-powered product search
• Supplier sync with Shopify, Clover, QuickBooks and moreYou will architect and build the backend that powers the entire platform.What You Will Build
• Authentication + user roles (customer, supplier, driver)
• Product catalog, categories, inventory APIs
• Cart, checkout, pricing logic
• Order creation, transitions, and reporting
• Driver routing + live location updates
• Push notification triggers
• Webhooks + third-party integrations
• Admin API for supplier approvals
• AI search endpoints (with vector DB)
• Logs, caching, queue systemsCore Responsibilities
• Design and develop secure REST APIs
• Build scalable backend architecture from scratch
• Integrate Shopify, Clover, QuickBooks and other external APIs
• Implement real-time updates (WebSockets or equivalent)
• Work with mobile engineer to expose clean endpoints
• Ensure performance, reliability, and security
• Deploy to cloud (AWS / GCP) with CI / CDRequired Skills
• Strong experience in Node.js
• Hands-on with MongoDB or PostgreSQL
• Experience designing complex API systems
• Real-time technologies : WebSockets / Socket.io / Firebase
• System architecture, caching, queues (Redis / RabbitMQ)
• Experience integrating third-party APIs
• Strong debugging & problem-solving skills
• Solid Git disciplineBonus Skills
• Experience with Shopify / QuickBooks APIs
• Knowledge of GraphQL
• Familiarity with vector databases (Pinecone / Qdrant)
• DevOps basics (Docker, CI / CD, load balancing)
• Background in eCommerce or logistics systemsWhy Join
• Build a full product ecosystem end-to-end
• Work directly with the founder for fast decisions
• No bureaucracy, high ownership
• Ship something real in 4 monthsTo ApplySend your :
• LinkedIn
• GitHub
• 2 backend projects or APIs you have built
• Brief note on your experience with integrations