Back End Engineer

2 weeks ago

Islamabad, Islamabad, Pakistan Proto IT Consultants Full time 900,000 - 1,200,000 per year

We are seeking an experienced backend engineer to design and develop secure RESTful APIs and handle integrations with major platforms. The ideal candidate is strong in
with TypeScript
,

, and
PostgreSQL with Drizzle ORM
, and has hands-on experience with
session-based authentication
and
OAuth
.

Responsibilities

  • Build and maintain RESTful APIs with proper validation, error handling, and documentation.
  • Design scalable database schemas and queries using PostgreSQL + Drizzle ORM.
  • Implement secure session-based authentication with OAuth providers (Google, Microsoft/Outlook).
  • Integrate with external APIs: Google, Outlook/Microsoft, Stripe, WooCommerce, Amazon, ShipBob, ShipStation, AfterShip and ChatGPT.
  • Manage webhooks, retries, rate-limiting for third-party integrations.
  • Write tests (unit/integration).
  • Ensure system security, reliability, and performance.

Requirements

  • 2-3 years of backend development experience with and TypeScript.
  • Strong expertise in and REST API design.
  • Proficiency in PostgreSQL and ORMs (Drizzle ORM preferred).
  • Solid understanding of session-based auth, OAuth 2.0 flows.
  • Proven experience integrating with at least several of the listed third-party platforms.
  • Strong knowledge of API security, scalability, and monitoring best practices.

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