Senior Software Engineer

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Five9

WebsiteLinkedInAll Job Openings

1001 - 5000 employees

Founded 2001

☁️ SaaS

🤖 Artificial Intelligence

📡 Telecommunications

SaaS • Artificial Intelligence • Telecommunications

Five9 is a leading provider of cloud contact center software, recognized as a leader in the Gartner Magic Quadrant for CCaaS. The company offers comprehensive tools for automating workflows and enhancing customer engagement through AI-driven solutions. Its platform integrates CRM and UC systems to provide seamless agent and customer experiences across various channels, such as voice, email, chat, and SMS. Five9 empowers businesses to elevate customer satisfaction and drive business results by delivering personalized and efficient customer service solutions.

📋 Description

• Contribute to the next generation of Five9’s modern SaaS platform enabling AI-driven customer engagement. • Design and develop highly available, scalable, and reliable microservices infrastructure. • Build and enhance Identity & Access Management (IAM) systems supporting OAuth, security tokens, SSO, federation, and customer/partner identities. • Apply cloud and open-source technologies to solve complex platform challenges. • Gain deep understanding of existing systems and contribute to architectural improvements. • Troubleshoot production issues and provide operational support across the software stack. • Collaborate with cross-functional engineering teams and drive technical excellence.

🎯 Requirements

• Strong expertise in Java, APIs, Spring Security, and Web Authentication. • Hands-on experience with SSO, SAML, OAuth, Federation, IDP, and CI/CD for identity platforms. • Ownership of production uptime, reliability, SLAs/SLOs, and incident response. • Participation in 24/7 on-call rotation for identity-related systems. • Experience in performance tuning microservices and database queries. • Familiarity with distributed databases such as CockroachDB or Cassandra. • Experience with cloud platforms (GCP preferred).

🏖️ Benefits

• 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.