VoIP Software (Node.js / Python) Engineer

Employment Type: Full-time

Location: Remote (Employed by Ufinity Ventures, deployed to international client)

About Us:

Ufinity Ventures is a dynamic talent solutions company supporting international clients by building high-performing remote teams in India. Professionals employed through Ufinity work directly with global technology companies while benefiting from structured HR, payroll, and compliance support.

You will be deployed to work with one of our international clients engaged in building modern, scalable software platforms and digital applications.

Role Summary:

We are seeking a VoIP Backend Developer with strong hands-on programming experience in Node.js and/or Python, combined with practical experience in VoIP technologies such as SIP, RTP, and Asterisk/Kamailio platforms.

This role requires a developer mindset, focusing on backend service development and VoIP platform integration.

Job Background

We are seeking an energetic and highly skilled VoIP Software Engineer who thrives on solving complex technical challenges and building scalable communication systems.

In this role, you will contribute to the design, development, and maintenance of SIP-based VoIP infrastructure, integrations, and backend services. You will work closely with distributed teams to deliver reliable, high-quality communication solutions used by global customers.

Key Responsibilities:

Design and develop backend services using Node.js and/or Python
Build and maintain RESTful APIs
Work with Asterisk / Kamailio / FreeSWITCH
Troubleshoot SIP / RTP / WebRTC issues
Integrate third-party APIs
Work with Linux-based environments
Optimize performance and scalability
Work with MySQL / PostgreSQL databases
Collaborate using Git workflows
Participate in debugging and production support

Mandatory Skills:

Candidates must have all of the following:

3+ years Node.js OR Python backend development
Experience with Express.js / FastAPI / Django
Hands-on experience with REST API development
Experience with Asterisk OR Kamailio OR FreeSWITCH
Strong knowledge of SIP / RTP
Experience working in Linux
Experience with MySQL or PostgreSQL
Experience with Git

Preferred Skills

WebRTC experience
AWS (EC2, S3, ECS)
Docker / Kubernetes
RabbitMQ / SQS
Grafana / Zabbix

Experience Range:

5–10 Years Total Experience

With:

Minimum 3+ years Backend Development

VoIP Backend Developer (Node.js / Python) (Remote)