Senior Software Engineer - AI Agentic Trust

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.

The Team

Join us at the forefront of innovation as we build the future of AI. Our team, AI - Agentic Trust, is on a mission to create the world's leading Agentic Quality Management platform. We are pioneers, thinkers, and builders, dedicated to pushing the boundaries of what's possible in artificial intelligence. Our mindset is built on a foundation of critical thinking and relentless curiosity—we question everything to ensure we build truly exceptional solutions. If you thrive in a collaborative, team-first environment where your voice is heard and your ideas can shape the future, you belong with us.

Role

As a Senior Software Engineer in the Agentic Trust team, you will be a key architect and builder of our next-generation quality management platform. Your role is to design, develop, and maintain a highly concurrent, high-throughput platform designed for massive scale on Google Cloud Platform (GCP). This isn't just a coding position; we are looking for a strategic thinker who excels at architecting complex, distributed systems and leveraging the full power of AI-assisted coding tools. You will be instrumental in delivering the core components of a system that will redefine trust and quality in AI agents.

How You Contribute

Take a leading role in the design and architecture of cloud-native, distributed systems, applying a critical eye to solve challenges of scale and concurrency.
Write high-quality, efficient, and maintainable code in Java, working with SQL and NoSQL databases within the GCP ecosystem.
Embrace and champion a "question everything" mindset, actively participating in deep discussions to explore, challenge, and refine requirements. Masterfully utilize AI-assisted coding tools (e.g., GitHub Copilot, Claude) as a core part of your development workflow, from planning and design to implementation and testing. Collaborate effectively with all stakeholders, demonstrating exceptional communication skills to align teams and drive projects forward. Foster a "team-first" culture by actively contributing, sharing knowledge, and working together to achieve collective success. Take ownership of your work, ensuring that development milestones are met and that our solutions are built to the highest standards of quality and resilience.

Skills, Competencies, and Qualifications

Required:

• Minimum of 5 years of professional experience in software engineering, with a strong focus on backend development.
• Expert-level proficiency in Java.
• Proven experience designing and building highly concurrent, high-throughput distributed systems.
• Strong understanding of architectural patterns suited for scalability and resilience, such as Event-Driven Architecture (EDA), CQRS, and the Outbox Pattern.
• Deep experience with SQL and NoSQL databases, coupled with knowledge of advanced caching strategies for performance optimization.
• Proven experience designing and building solutions on Google Cloud Platform (GCP).
• Mandatory, hands-on experience using AI coding assistants (e.g., GitHub Copilot, Claude) as an integral part of your development process.
• Strong architectural and critical thinking skills.
• Exceptional communication and stakeholder management skills.
• A collaborative, team-first mindset with a passion for discussion, exploration, and creative problem-solving.
• Bachelor’s degree (or equivalent) in Computer Science, Engineering, or a related discipline.

Desirable:

• Experience with contact centers, VoIP, or telecommunications.
• Familiarity with building and managing multi-tenant systems.
• Experience with Kubernetes and modern CI/CD pipelines.

Key Relationships

This role reports within the engineering management structure and has no direct reports.

Key stakeholders include:

• AI and Product leadership.
• Engineering and architecture teams.
• Technical leadership and senior management.
• Compliance and Information Security teams.

Benefits:

• Five9 Shares
• Bonus Scheme
• 10% Flexi Benefit
• Meal Allowance
• Medical Insurance
• Life Insurance
• 25 day Annual Leave + Public Holidays

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