Senior Backend Engineer - Node.js (Onsite, Lahore, PKR Salary)

Requirements:

• 4+ years of professional backend development experience.
• Strong hands-on experience with Node.js and TypeScript.
• Experience with Express.js, NestJS, or similar Node.js frameworks.
• Strong understanding of REST API design, middleware, validation, error handling, and API versioning.
• Good knowledge of PostgreSQL or other relational databases, including schema design, migrations, indexes, transactions, and query optimization.
• Hands-on experience with TypeORM, Prisma, or similar ORM tools.
• Experience with cache management, background jobs, queues, retries, and asynchronous processing.
• Understanding of authentication and authorization mechanisms such as JWT, RBAC, OAuth, or similar.
• Experience integrating third-party APIs and handling webhooks.
• Ability to write clean, modular, and maintainable code.
• Comfortable working with Git, pull requests, and code reviews.
• Strong debugging, problem-solving, and communication skills.
• Experience with Stripe or similar payment and subscription billing platforms.
• Experience building or maintaining multi-tenant SaaS applications.
• Experience working with webhook-heavy systems, including retries, idempotency, and failure handling.
• Experience in SaaS, fintech, marketplaces, logistics, e-commerce, restaurant tech, or other operationally complex domains.
• Experience with Next.js for frontend integration or internal dashboard support.
• Basic exposure to AWS, GCP, Azure, or other cloud platforms.
• Basic understanding of Docker and CI/CD pipelines.

Responsibilities:

• Design, develop, and maintain backend services using Node.js and TypeScript.
• Build secure, scalable, and well-structured REST APIs.
• Work with PostgreSQL and ORM tools such as TypeORM or Prisma.
• Design database schemas, write migrations, optimize queries, and manage transactional workflows.
• Build and maintain background jobs, retries, and asynchronous workflows using Redis, BullMQ, or similar queue and cache management systems.
• Integrate third-party services such as payment gateways, communication platforms, cloud storage, authentication providers, and external business systems.
• Implement secure authentication, authorization, validation, error handling, and API best practices.
• Support SaaS features including role-based access control, tenant-level data isolation, and operational workflows.
• Build and maintain webhook-driven workflows with proper validation, retries, and idempotency handling.
• Collaborate with frontend engineers to define API contracts and deliver end-to-end features.
• Write clean, maintainable, testable, and well-documented code.
• Troubleshoot and debug production issues using logs and structured debugging approaches.
• Participate in code reviews, technical discussions, and continuous improvement of backend engineering practices.