Backend Engineer [Node.js, Dialer/Telephony/IVR] - Gurugram - In-Office 5 Days - Immediate Joiner

Company Description Sirius Lync is dedicated to delivering high-quality IT training, consulting, and services to a global audience. The organization focuses on enabling strong career paths for individuals entering the IT field as well as experienced professionals seeking advancement. By emphasizing excellence and practical skills, Sirius Lync supports continuous professional growth and development. Team members contribute to meaningful career-shaping initiatives while working with diverse learners and clients.
Title: Backend Engineer [Node.js, Dialer/Telephony/IVR] - Gurugram - In-Office 5 Days - Immediate Joiner
Location: Gurugram - In-Office 5 Days - 1 Position
Experience: 3-8 Years
Notice Period: Immediately available or within 15 days only. Delhi NCR preferred.
Key Skills: Node.js, Backend Development, Dialer, IVR, CPaaS, Telephony APIs, SIP, Voice APIs, PostgreSQL, Redis, Contact Center, Auto Dialer, Predictive Dialer, Voice Bot, RESTful APIs
About the Role:
As a Backend Developer specializing in dialer and telephony systems, you will be responsible for designing, developing, and maintaining the core backend components of our omnichannel dialer platform.
Key Responsibilities:
- Build RESTful APIs using Node.js
- Optimize PostgreSQL + Redis data flow
- Develop and maintain backend services using Node.js for omnichannel dialer platform
- Integrate telephony APIs to enable outbound and inbound calling, SMS, and other communication channels
- Design and implement IVR flows, call routing, and automation features
- Optimize call handling, queuing, and agent management for high concurrency and reliability
- Collaborate with frontend, product, and engineering teams
- Ensure platform scalability, security, and performance
- Monitor system performance, troubleshoot issues, and implement improvements
- Stay updated with latest telephony and communication technologies
Ideal Candidate:
- 3+ years backend dev with strong Node.js for scalable apps, microservices, REST APIs[Mandatory]
- Min 1+ years hands-on working on Dialer, Telephony, IVR, Contact Center, Auto/Predictive Dialer, Voice Bot, or CPaaS products[Mandatory]
- Hands-on developing & maintaining backend services for calling platforms - inbound/outbound workflows, call mgmt, tracking, agent mgmt[Mandatory]
- Exp integrating telephony APIs, SIP-based systems, Voice/Call/SMS APIs[Mandatory]
- Strong understanding of IVR design, call routing logic, automation workflows, queues, agent assignment, escalation[Mandatory]
- Strong database exp with PostgreSQL and preferably Redis for caching/session/queue/real-time[Mandatory]
- Domain - CPaaS, Contact Center, Telephony, Communication Platforms, Voice Tech, Conversational AI, Voice Bot, Customer Engagement, Unified Communications, or SaaS product[Mandatory]
- Candidates immediately available or can join within 15 days[Mandatory]
- Delhi NCR willing to relocate to Gurugram preferred[Mandatory]
- Preferred - AWS/Azure/GCP
Perks: Cutting-edge comm tech, collaborative env, competitive salary, high impact in telecom domain.
Interview Process: HR Screening > 1 Machine Task + Technical Round > CEO
Contact:
PJ Aravind Babu
+91 7075318723 / 8951154488
PJ@Siriuslync.com / PJ.Itrecruiter@gmail.com
https://whatsapp.com/channel/0029Vb8qoU5Fy72HMaSEoT2I

Work arrangement
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