Senior Full-Stack Developer – E-commerce Integrations

TechSpawn Solutions; Pune District; On-site; INR 1,200,000 - 2,400,000; Full time

Job summary

Techspawn Solutions is seeking a hands-on Senior Full-Stack Developer to build and maintain e-commerce applications and integrations connecting Shopify, Odoo, ERP, accounting, inventory and order-management systems.

This role requires more than basic website or CRUD development. You should own features across frontend, backend, APIs, databases, webhooks and background jobs.

Qualifications

• 4+ years of professional full-stack development experience.
• Hands-on with Node.js, JavaScript/TypeScript and React.
• Experience building or maintaining e-commerce or third-party integrations.
• Strong understanding of REST APIs, GraphQL, webhooks, OAuth and asynchronous programming.
• Experience with PostgreSQL/MySQL databases and Prisma or similar ORM.
• Git, code reviews and deployment workflows.

Responsibilities

• Build and maintain scalable e-commerce applications and integrations.
• Develop frontend experiences using React, React Router and Shopify Polaris.
• Build backend services using Node.js and JavaScript/TypeScript.
• Work with REST, GraphQL, JSON-RPC, OAuth and webhooks.
• Integrate commerce platforms with ERP, accounting and inventory systems.
• Implement reliable product, order, customer, inventory and fulfilment workflows.
• Handle API rate limits, retries and partial failures.
• Write tests and participate in code reviews, owning work from analysis to release.

Job description

Job Description

Techspawn Solutions is looking for a hands-on Senior Full-Stack Developer to build and maintain e-commerce applications and integrations connecting platforms such as Shopify, Odoo, ERP, accounting, inventory and order-management systems.

This role requires more than basic website or CRUD development. You should be comfortable understanding complex business workflows and owning features across the frontend, backend, APIs, databases, webhooks and background jobs.

Responsibilities

• Build and maintain scalable e-commerce applications and integrations.
• Develop frontend experiences using React, React Router and Shopify Polaris.
• Build backend services using Node.js and JavaScript/TypeScript.
• Work with REST, GraphQL, JSON-RPC, OAuth and webhooks.
• Integrate commerce platforms with ERP, accounting, inventory, fulfilment and other third-party systems.
• Implement reliable product, order, customer, inventory, refund and fulfilment workflows.
• Build background processing using Redis, BullMQ and job queues.
• Handle API rate limits, retries, duplicate events, pagination and partial failures.
• Work with PostgreSQL/MySQL and Prisma.
• Investigate production issues across applications, databases, queues and external APIs.
• Write maintainable code and tests, participate in code reviews and own work from requirement analysis through release.

Required Skills

• 4+ years of professional full-stack development experience.
• Strong hands-on experience with Node.js, JavaScript/TypeScript and React.
• Practical experience building or maintaining e-commerce or third-party integrations.
• Strong understanding of REST APIs, GraphQL, webhooks, OAuth and asynchronous programming.
• Experience with relational databases such as PostgreSQL or MySQL.
• Understanding of queues, retries, idempotency and scheduled processing.
• Ability to understand business logic and safely handle complex data flows.
• Good knowledge of Git, code reviews and deployment workflows.