Node js developer

Key Responsibilities

Backend Development & Architecture

• Design and develop scalable backend services using Node.js.
• Build microservices for telephony, call routing, ACD, WebRTC signaling, IVR workflows,

message queues, and real-time events.

• Implement RESTful APIs, WebSocket-based services, and internal service-to-service

communication.

Real-Time Processing (Telephony)

• Work on telephony-related modules
• Call logs flow
• ACD engine
• WebRTC signaling
• Real-time call events
• Agent state transitions
• Event-driven routing systems
• Optimize latency and concurrency for real-time voice systems.

Data Handling & Optimization

• Build and optimize Elasticsearch queries (aggregation, nested, scroll, bulk, time-series

handling).

• Work with MongoDB for high-volume document operations.
• Implement caching layers using Redis, TTL strategies, and pub/sub patterns.
• Handle millions of records efficiently with optimized indexing & data models.

Queues, Streaming & Event-Driven Architecture

• Implement and manage high-throughput queues using RabbitMQ or Kafka.
• Build producers/consumers for telephony workflows (call events, call states, CDR

processing, agent events).

• Interprocess Communication (IPC) & System Programming
• Implement multi-process Node.js apps (cluster mode, worker threads, child processes).
• Strong hold on OS concepts: file descriptors, sockets, event loops, buffers, concurrency

models.

• Write efficient socket-based programs for internal signaling.

Performance, Reliability & Scalability

• Optimize code for low latency & high throughput.
• Build retry handling, persistence queues, circuit breakers, and fail-safe mechanisms.
• Work on large-scale log processing pipelines.

Telephony Domain Responsibilities

• Understand call flows, SIP/WebRTC basics (optional but preferred).
• Work on modules like call routing, IVR, call state machine, events pipeline.
• Collaborate with telephony/VoIP teams for API integrations.

Monitoring, Debugging & DevOps Collaboration

• Work with DevOps for CI/CD, scaling microservices, and containerization (Docker).

Required Skills & Qualifications

Core Technical Skills

• Node.js (3+ years) with strong fundamentals (events, async, memory, cluster, streams).
• Elasticsearch (indexing, nested fields, aggregations, time-series queries).
• MongoDB (schema design, indexing, pipelines).
• Redis (cache, pub/sub, streams).
• RabbitMQ / Kafka (message queues, routing, consumer groups).
• WebSockets & real-time event systems.
• IPC, socket programming, networking basics.
• Excellent command over algorithms, patterns, data structures, and backend architecture.

Must-Have Knowledge Areas

• Event-driven systems.
• API performance optimization.
• Large-scale data handling.
• Fault-tolerant distributed systems.
• High-concurrency systems.
• Memory management and Node.js internals.
• Working with large JSON data, micro-batching, and queue-based processing.

Good to Have / Preferred

• Experience with Telephony: SIP, RTP, WebRTC signaling, Asterisk/Freeswitch basics.
• Knowledge of microservices architecture & containerization (Docker).
• Experience in building SaaS or CPaaS platforms.
• Exposure to distributed locks, rate-limiting, throttling strategies.

Pay

Up to ₹1,800,000.00 per year

Benefits

Paid sick time

Provident Fund

Ability to commute/relocate

Jaipur, Rajasthan: Reliably commute or planning to relocate before starting work (Preferred)

Experience

Node.js: 4 years (Required)

Work Location

In person