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.
Senior Software Engineer in AI - Front End React/Redux, Java
Five9 is a leading provider of cloud software for the enterprise contact center market, bringing the power of the cloud to thousands of customers and facilitating more than three billion customer interactions annually. Five9 has led the cloud revolution in contact centers, helping organizations transition from legacy premise-based solutions to the cloud. The cloud contact center market has become the hot space for innovation in real-time communications, and is the tip of the spear for the application of Artificial Intelligence. Five9 has led the charge with its Genius AI platform. Five9 offers a high-energy environment with lots of room for personal and professional growth. Our innovative AI team is seeking a talented and experienced Senior Full Stack Software Engineer to join our Voice of Customer (VOC) team. AI experience is required for this role - you will work hands-on with AI technologies from vendors like Azure, OpenAI, Google, Databricks, IBM, and Amazon, and continue to build on some of the hottest skills on the market. An ideal candidate for us is an experienced engineer who is passionate about building high performance web platforms and applications, a brilliant problem solver and a creative self-starter.
Voice of Customer (VOC) is Five9’s AI-powered customer insights product. Every day, contact centers handle enormous volumes of voice and chat conversations that hold the clearest signal about what customers actually want - and almost none of it gets read. VOC applies AI to those conversations at scale to surface why customers are reaching out, how those reasons cluster and shift over time, and where the business should act. The result is a set of insights and analytics that CX and operations leaders use to make decisions, with the ability to trace any insight back to the conversations behind it.
Key Responsibilities:
- Implement UX designs by working with UX Designers on a day-to-day basis, using React/Redux based framework.
- Build the customer-facing insights experience for VOC - interactive dashboards, charts, and drill-down views over AI-generated insights.
- Be part of an agile team to develop a scalable, highly available application platform using modern PaaS platforms such as GCP.
- Participate and contribute to requirements analysis and grooming.
- Understand how to leverage PaaS components, such as CDN, noSQL databases when developing software in order to achieve scalability, reliability, and operability.
- Ability to build custom widgets for dashboards developed using Google Looker Studio plugins is a plus, but not required.
- Document and communicate clearly architecture and implementation solutions.
- Have ownership of your code in production, including on-call, troubleshooting.
Key Skills:
- 5+ years software development experience (mandatory).
- React/Redux focus.
- Highly proficient in JavaScript and Java.
- Hands-on experience building AI-powered product interfaces - presenting model output to users and supporting human review and correction of it.
- Experience building data-heavy or analytics interfaces - charts, dashboards, filtering, and large result sets.
- Experience with PaaS hosted relational and no-SQL databases.
- Desirable, but not required, experience with custom widget development using Google Looker Studio.
- Experience in operational code ownership - on-call, troubleshooting, uptime.
- Experience in applying modern UI design patterns and separating concerns in a distributed system.
- Familiarity with vibe coding using different AI tools like Claude Code.
- Must have experience working within an Agile/Scrum team.
- Positive, self-motivated and enthusiastic attitude with a strong sense of ownership.
- Strong pro-active communication skills, both verbal and written.
- AI skills in speech recognition and natural language processing are a plus but not required.
- Experience in contact center software is a plus but not required.
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.
Skills Required
- 5+ years of software development experience
- Highly proficient in JavaScript and Java
- Strong experience with React and Redux
- Hands-on experience building AI-powered product interfaces
- Experience presenting model output to users and supporting human review and correction
- Experience building data-heavy or analytics interfaces with charts, dashboards, filtering, and large result sets
- Experience with PaaS-hosted relational and NoSQL databases
- Experience with operational code ownership, on-call support, troubleshooting, and uptime
- Experience applying modern UI design patterns and separating concerns in distributed systems
- Experience working within an Agile/Scrum team
- Familiarity with AI coding tools such as Claude Code
- Positive, self-motivated, enthusiastic attitude and strong sense of ownership
- Strong proactive verbal and written communication skills
- Custom widget development using Google Looker Studio plugins
- AI skills in speech recognition and natural language processing
- Experience in contact center software
Five9 Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Five9 and has not been reviewed or approved by Five9.
-
Healthcare Strength — Employer-paid employee premiums, multiple plan options, and broad coverage across medical, dental, vision, disability, FSAs, and EAP are emphasized as core elements of the package. These features position healthcare as a standout component of total rewards.
-
Equity Value & Accessibility — Equity grants and an ESPP are highlighted as meaningful parts of total compensation. Feedback suggests these stock components can materially enhance overall pay when company performance is favorable.
-
Fair & Transparent Compensation — Public job postings include salary ranges and company materials describe formal peer benchmarking of pay. These practices indicate structure and visibility around compensation decisions.
Five9 Insights
What We Do
Five9 is an industry-leading provider of cloud contact center solutions, bringing the power of cloud innovation to more than 2,000 customers worldwide and facilitating billions of customer engagements annually. The Five9 Intelligent Cloud Contact Center provides digital engagement, analytics, workflow automation, workforce optimization, and practical AI to help customers reimagine their customer experience. Designed to be reliable, secure, compliant, and scalable, the Five9 platform helps increase agent and supervisor productivity, connects the contact center to the business, and ultimately deliver tangible business results including increased revenue and enhanced customer trust and loyalty
