Senior C++ Software Engineer - Global Voice | India

Job Openings: Full-Time Jobs | Five9

Apply to this job
India, Bengaluru Until 8/21/2026 H-1B sponsor history First posted April 29, 2026 Last posted April 29, 2026
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 Senior Software Engineer who is passionate about creating high-performing, scalable, and resilient mission-critical services that are the foundation of Five9’s next-generation contact center platform. You will have the opportunity to combine what you already know with new learnings, crafting a bespoke solution that serves our customers and partners.


Key Responsibilities

  • Participate in an Agile scrum team which practices DevOps.
  • Write clean and well-documented code and 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

  • 5+ years of professional experience in software development, with some being written in C and/or C++.
  • Hands-on experience writing software for real-time communications signaling and media protocols (SIP, RTP, etc.).
  • Ability to methodically troubleshoot complex systems.
  • Excellent communication and organizational skills, along 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
  • SRE principles
  • AI/ML, LLMs

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. 


View our privacy policy, including our privacy notice to California residents here: https://www.five9.com/pt-pt/legal.  

Note: Five9 will never request that an applicant send money as a prerequisite for commencing employment with Five9.

About this role

Summary

Develop and enhance real-time communication services, integrate AI, and contribute to cloud-based contact platform.

Job title

Senior C++ Software Engineer - Global Voice

Experience level

5+ years

Industry

software

Location requirements

Bengaluru, India; remote work not specified.

Salary

Not specified

Visa sponsorship

H-1B sponsor history

Management role

No

Skills & keywords

Required skills

C++17+SIPRTPAI APIscloud platformsCI/CDcontainers

Preferred skills

None specified

Specializations

C++17+real-time communicationcloud platformsAI/MLmedia protocols
Locations

Structured locations inferred from the posting.

Bengaluru, Karnataka, India

Work arrangement unknown City