Software Engineer II – C++, SIP

Five9; Tamil Nadu; Hybrid; INR 1,500,000 - 2,500,000; Full time

Job summary

Five9, a leading cloud contact center software provider, is seeking a Software Engineer II in India to join our Global Voice Team. You will work on high-performing, scalable services that form the foundation of Five9’s next-generation platform, combining your expertise with new learnings to craft bespoke solutions for customers and partners.

You will participate in an Agile Scrum team with DevOps practices, write clean code and tests, and contribute to real-time communications and AI-enabled

Qualifications

• 3+ years of professional software development experience.
• Experience in C/C++ and real-time communications.
• Experience with SIP, RTP and media protocols.

Responsibilities

• Participate in an Agile Scrum team that practices DevOps
• Write clean, well-documented code and tests
• Deliver code as part of a solution in the public cloud
• Develop and enhance Media Server for real-time AI integrations

Skills

C/C++

SIP/RTP

Cloud platforms

CI/CD

SRE basics

Communication skills

Tools

AWS

Azure

GCP

Docker

Kubernetes

Job description

Join us in bringing joy to customer experience. Five9 is a leading provider of cloud contact center software, bringing the power of cloud innovation to customers worldwide.

Living our values everyday results in our team-first culture and enables us to innovate, grow, and thrive while enjoying the journey together. We celebrate diversity and foster an inclusive environment, empowering our employees to be their authentic selves.

Join us in bringing joy to customer experience. Five9 is a leading provider of cloud contact center software, bringing the power of cloud innovation to customers worldwide.

Living our values every day results in our team-first culture and enables us to innovate, grow, and thrive while enjoying the journey together. We celebrate diversity and foster an inclusive environment, empowering our employees to be their authentic selves.

Our Global Voice Team is looking for a committed, experienced Software Engineer II who is passionate about creating high-performing, scalable, and resilient mission-critical services that form the foundation of Five9’s next-generation contact center platform. You will have the opportunity to combine your existing expertise with new learnings, crafting bespoke solutions that serve our customers and partners.

Responsibilities:

• Participate in an Agile Scrum team that practices DevOps
• Write clean, well-documented code and corresponding tests
• Deliver your code as part of an overall solution running in the public cloud
• Develop and enhance our Media Server to support real-time integrations with Large Language Models (LLMs) and other AI services

Required Skills:

• 3+ years of professional experience in software development, including experience in C and/or C++
• Hands-on experience developing software for real-time communications signaling and media protocols (e.g., SIP, RTP)
• Ability to methodically troubleshoot complex systems
• Excellent communication and organizational skills, with a strong sense of ownership

Technical Skills:

• Modern C++ (C++17+)
• RTP/SIP, audio codecs, SIP/SDP
• ASR/TTS integration
• AI APIs
• Cloud platforms (AWS, Azure, GCP)
• CI/CD
• Containers
• Site Reliability Engineering (SRE) principles
• AI/ML and Large Language Models (LLMs)

This role is hybrid and requires 3 days a week in office.

Five9 embraces diversity and is committed to building a team that represents a variety of backgrounds, perspectives, and skills. The more inclusive we are, the better we are. Five9 is an equal opportunity employer.

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