Staff Software Engineer

Join Five9 as a Staff Software Engineer to design, implement, and scale high-performance microservices using Java and Spring Boot. You will work on core backend services that power our global cloud contact center platform.

Requirements

• Design, develop, and optimize high-performance microservices using Java and Spring Boot
• Write clean, maintainable, and testable code, with a strong focus on scalability, reliability, and performance
• Take ownership of services end-to-end — from design and implementation to deployment, monitoring, and ongoing operations
• Collaborate with architects and senior engineers on system design, technical reviews, and problem-solving
• Ensure services meet SLAs, performance metrics, and security standards
• Contribute to improving CI/CD pipelines, automation, and observability to reduce manual effort and improve service reliability
• Provide technical guidance and mentorship to mid-level and junior engineers through code reviews, pairing, and knowledge sharing
• Stay current with evolving technologies and help evaluate and adopt tools that strengthen our platform

Benefits

• Health insurance
• Retirement plan
• Generous paid time off
• Flexible working hours
• Professional development opportunities
• Diversity and inclusion program