Qureos

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Senior Backend Developer

Karachi, Pakistan

We Are Hiring Senior Backend Developer
Are you passionate about building scalable backend systems, managing real-time communication, and working with cutting-edge IoT technologies? Join LIMI AI as a Senior Backend Developer and take ownership of backend architecture, APIs, and integrations that power our next-generation platforms.

What You Will Do:

*Architect, develop, and maintain backend services with Node.js and Express.js.
*Build and optimize REST APIs and real-time pipelines with WebSocket and Socket.io.
*Model and manage data across MongoDB, PostgreSQL, and MySQL.
*Implement smooth deployments with CI/CD pipelines (GitHub Actions).
*Scale distributed services with Docker, Nginx, PM2, and Redis.
*Integrate IoT ecosystems via MQTT, EMQX, and ThingsBoard.
*Ensure reliability, scalability, and performance through monitoring and optimization.

What We Looking For:

*Proven experience as a Backend Developer (5+ years, with 2+ years in senior/lead roles).
*Strong expertise in Node.js, Express.js, REST APIs, WebSocket.*Hands-on with relational & non-relational databases (PostgreSQL, MySQL, MongoDB).
*Solid grasp of Dockerized deployments, Git workflows, and CI/CD.
*Familiarity with Nginx, PM2, Redis for performance and scalability.
*Bonus: Experience with IoT protocols (MQTT) and brokers (EMQX, ThingsBoard).
*Strong problem-solving skills and debugging mindset.
*Ability to mentor and collaborate across teams.

Job Type: Full-time

Pay: Rs60,000.00 - Rs170,000.00 per month

Work Location: In person

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