Software Engineer II – C++, SIP
Five9
Salary not disclosed
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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.
Five9 is committed to providing reasonable accommodations for qualified individuals with disabilities throughout the application and interview process. If you need assistance or an accommodation due to a disability, please contact us at accommodations@five9.com to request an accommodation. Requests will be handled confidentially and in accordance with applicable law.
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
Five9's Global Voice Team is building the next generation of their cloud contact center platform, and this role focuses on the real-time communications layer that powers it. As a Software Engineer II, you'd work within an Agile DevOps team developing and enhancing the Media Server—work that increasingly involves integrating AI services and large language models into voice communications. You'll write production C++ code (C++17+) that handles SIP, RTP, and related signaling protocols, then deploy it to public cloud infrastructure with a strong emphasis on reliability and scalability.
The role expects solid foundational experience: at least three years building software with C or C++, plus hands-on work with real-time communications protocols. Beyond that core, you should be comfortable troubleshooting complex distributed systems, writing well-tested code, and operating within cloud and containerized environments. Familiarity with SRE principles, CI/CD pipelines, and modern AI/ML concepts—particularly LLM integration—will help you contribute meaningfully from day one, though the job description suggests these are areas where you can grow alongside the team.
This is a hybrid position based in Chennai, requiring three days per week in office. It suits someone with strong C++ fundamentals who's ready to deepen expertise in voice protocols and cloud-native development while working on systems that directly impact customer experience at scale.
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Pay for this role
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