Senior MERN Stack Developer I Karachi I Full-time

1 day ago


Karachi, Sindh, Pakistan CollabEZ Full time 1,200,000 - 2,400,000 per year

We're Hiring – Full Stack Back-End Developer (MERN)

Karachi | Full-Time | 3–5 Years Experience | Immediate Joining

CollabEZ is a fast-growing
software & digital solutions company
with a delivery center in Karachi. We're looking for a strong
Backend-Focused MERN Developer
to join our team and build robust, scalable systems for international projects across web, mobile, and AI-powered SaaS products.

What You'll Do

  • Design & develop
    scalable backend systems
    using
    , Express, and MongoDB
  • Build and optimize
    REST APIs & GraphQL endpoints
  • Work with
    database schemas, queries, and indexing
    for high performance
  • Integrate
    third-party APIs and payment gateways
  • Collaborate with frontend engineers (

    ) to deliver features end-to-end
  • Write
    clean, testable, reusable code
    and participate in code reviews

What We're Looking For

  • 3–5 years MERN experience
    (backend-heavy) with a degree from a reputable university
  • Strong in
    , , MongoDB, API design, authentication, security
  • Solid understanding of
    data structures, algorithms, and system design
  • Experience with
    asynchronous programming, queues, and performance optimization
  • Familiarity with
    GitHub & version control workflows
  • Bonus:
    TypeScript, Redis, message queues (BullMQ/RabbitMQ), microservices

What We Offer

  • Competitive salary (based on experience)
  • Challenging backend-heavy projects with growth opportunities
  • Collaborative team environment
  • Exposure to international projects & AI-driven SaaS products


This is an immediate joining position. Do not apply if you can't join in 3 days.

Send your CV and Cover Letter to


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