Senior Backend Engineer - Cortex| IND

Job Description

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

Responsibilities

• 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, other 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 that the development stays on track, milestones are met, and the project aligns with business objectives.

Required Skills and Qualifications

• 5+ years of industry experience in Java backend development.
• Strong proficiency with server side technologies, including:
  • REST API design and implementation
  • Microservice architectures
  • Backend frameworks such as Spring Boot
  • Databases (SQL, NoSQL, Redis)
• Hands on experience designing and implementing scalable, high performance microservices that expose REST APIs.
• Experience solving complex problems that span multiple services, products, or distributed systems.
• Solid understanding of security best practices and the ability to implement measures to protect applications and data.
• Ability to work both independently and as part of a collaborative engineering team.
• Strong commitment to delivering high quality, performant, and scalable backend solutions on time and within scope.
• Proven ability to mentor other developers through direct guidance and code reviews.
• Bachelor’s degree (or equivalent) in a relevant discipline.

Desirable Qualifications

• Experience with Google Cloud Platform (GCP), Kubernetes, Build tools (Gradle preferred) and CI/CD pipelines (Gitlab preferred)
• Experience with Event Driven messaging systems
• Experience with Contact Centre technologies, including IVR, Virtual Agents, VoIP, and telecommunications service providers.
• Experience with AI Development Tools (Claude preferred)

Key stakeholders

• Service owners and their teams
• Technical leadership and senior management
• Engineering teams