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