Five9

Senior AI Software Engineer - Backend

Five9
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3 hours ago
Bengaluru, IndiaSenior
H1B Sponsor

Responsibilities

  • Develop scalable, highly available backend platforms and microservices using Java, Spring Framework, Spring Boot, and cloud PaaS technologies.
  • Build and scale backend services and data pipelines that transform customer conversations into insights.
  • Integrate AI and LLM services, including prompt design, structured output, evaluation, and cost and latency management.
  • Use message buses, cloud functions, noSQL databases, Kubernetes, and other PaaS components to support scalability, reliability, and operability.
  • Participate in requirements analysis and feature grooming, and communicate architecture and implementation decisions clearly.
  • Own production code through on-call support, troubleshooting, and uptime responsibilities.
  • Develop automated test cases and apply design patterns and separation of concerns in distributed systems.
  • Work collaboratively within an Agile/Scrum team while following application and data security best practices.

Requirements

  • 5+ years of software development experience.
  • High proficiency in Java, Spring Framework, Spring Boot, and REST API design.
  • Hands-on experience building AI-powered products or services with practical LLM integration.
  • Experience designing and implementing scalable, event-driven microservices and distributed systems.
  • Experience with PaaS-hosted relational and noSQL databases such as MySQL, BigQuery, DataStore, and Redis.
  • Experience with public cloud technologies, Kubernetes, noSQL databases, and message buses.
  • Experience with automated testing tools such as JUnit.
  • Experience with operational code ownership, including on-call support, troubleshooting, and uptime.
  • Strong understanding of security best practices for protecting applications and data.
  • Experience working within an Agile/Scrum team and strong written and verbal communication skills.
  • Reactive programming experience, large-scale data processing and analytics, speech recognition, natural language processing, and contact center software experience are preferred or advantageous.
  • Familiarity with AI coding tools such as Claude Code is preferred.

Tech Stack

AzureDatabricksGoogle BigQueryGoogle Cloud PlatformJavaJUnitKubernetesMySQLRedisSpring Boot
Five9

About Five9

1,001-5,000 employees

Five9 provides a comprehensive suite of CX solutions, powered by Five9 Genius AI, to elevate customer experiences that deliver better business outcomes in the era of The New CX. The New CX redefines how brands connect with customers through seamless and efficient AI-driven journeys that anticipate and meet each customer’s unique needs. Our unified cloud-native offering enables AI and human agents to create hyper-personalized customer experiences, so every customer interaction is more connected, effortless, and personal. Trusted by 3,000+ customers and 1,400+ partners globally, Five9 brings together the power of our AI, our platform, and our people to drive AI-elevated CX.

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