Sr Software Engineer - AI Cortex team | India

Confirmed live in the last 24 hours

Five9

India, Bengaluru

On-site

Posted March 30, 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.

Role Purpose

As a Senior Software Engineer on the Cortex Management Team at Five9, you will design, develop, and maintain backend software solutions supporting the company’s AI initiatives. This role focuses on building scalable, reliable, and high-performance backend systems that power end-to-end platform capabilities.

You will be responsible for backend architecture, service design, implementation, testing, and documentation. Working closely with product owners and key stakeholders, you will translate requirements into robust backend services and APIs. The role also involves deep technical exploration of emerging technologies and partnering with product teams to bring innovative ideas into production.

In addition, this position plays a key role in mentoring other engineers and driving backend engineering best practices across Five9.

How You Contribute

Leverage strong expertise in programming languages, frameworks, and development methodologies to solve complex backend and distributed-systems challenges.
Write high-quality, efficient, and maintainable backend code by following best practices and contributing to core services, APIs, and platform capabilities.
Troubleshoot and resolve complex production and architectural issues by identifying root causes and implementing scalable solutions.
Ensure development stays on track, deliverables meet milestones, and solutions align with business and platform objectives.
Collaborate closely with cross-functional teams including product managers, backend development teams, frontend engineers, and quality assurance to ensure alignment on requirements, functionality, and delivery.
Follow and contribute to engineering processes, service documentation, technical specifications, and API contracts.
Ensure development stays on track, milestones are met, and the project aligns with business objectives.