Site Reliability Engineer

Say hello to opportunities. If you’re looking to be part of what’s next in communication, you’re in the right place. At RingCentral, we believe the best customer experiences happen when humans and AI work together. Our agentic voice AI portfolio—AIR, AVA, and ACE—brings together automation, assistance, and insights across the entire conversation lifecycle. The result? More seamless, intelligent experiences for businesses everywhere. With $2.5B+ in ARR and $250M invested in R&D annually, we’re building the future of AI-powered business communications. We are seeking a Site Reliability Engineer to help operate and improve large scale communications infrastructure powering SIP based voice and media services. Our platform handles high volumes of realtime sessions globally across distributed infrastructure. You would have the opportunity to work on an experienced team that operates across SIP signaling, media processing, networking, and infrastructure.  The team deploys, monitors, and troubleshoots distributed services while contributing to the observability and automation that keeps them reliable. The work is technically challenging and contributions to tooling and process have a real impact on how the platform operates. Responsibilities Operate and maintain Linux based telephony and platform services in production Troubleshoot SIP signaling and RTP media flows, including call routing, provisioning, registration, and signaling behavior Diagnose issues across the network stack affecting realtime voice and media traffic, including analysis of packet and signaling flows Deploy and administer Kubernetes services using Helm and GitOps workflows (e.g. CI/CD, FluxCD), including tracing and debugging configuration through layered rendering pipelines Manage stateful and pinned workloads, including understanding of Kubernetes scheduling primitives such as taints, tolerations, and node affinity Monitor systems and participate in on-call incident response for production infrastructure Implement production changes using testing, rollback planning, and risk mitigation practices Contribute to automation, observability, and operational tooling improvements Coordinate with infrastructure, network, storage, and platform teams to resolve cross-domain issues and maintain highly available global services Requirements Strong background administering UNIX/Linux systems and troubleshooting via the command line Solid grasp of TCP/IP networking fundamentals including routing, NAT, load balancing, and container networking Experience supporting SIP based VoIP or realtime communications systems, with strong understanding of SIP proxies, applications, session border controllers, RTP media servers Familiarity with Git based version control systems (e.g. GitLab) and common repository workflows Experience deploying services using GitOps automation (e.g. FluxCD, CI/CD) Skilled in analyzing network traffic using Wireshark, tcpdump, or similar tools Comfortable working with observability platforms including Prometheus, Grafana, Loki, and the ELK stack Hands on experience operating containerized platforms using Kubernetes, including interaction with the Kubernetes API, container registries, and Helm-based deployments Working knowledge of persistent storage in Kubernetes (e.g. PVCs) Experience operating infrastructure in AWS or GCP, including services such as S3, EC2, CloudFront, and certificate/secret management Familiarity with change management processes and production change approval workflows Experience automating operational tasks using Python or shell scripting Preferred Experience Knowledge of FoIP signaling flows, t.30/t.38 protocols, and related troubleshooting Experience with message brokers, media routing, or session-state management in distributed systems Operating large scale distributed systems across multiple regions Familiarity with hybrid cloud/baremetal environments Exposure to infrastructure automation tools such as Ansible or Terraform Understanding of container networking and services exposure Working knowledge of Kafka, Nginx, or similar distributed platform technologies Experience managing systems designed to meet high availability targets (e.g. 99.999%+) Operating within regulated or compliance-scoped environments (e.g. PCI-DSS) Keeping current and using modern AI tooling safely and responsibly, without overreliance What We Value An SRE mindset focused on reliability, automation, and continuous improvement Self starting engineers who take ownership and use available resources to resolve problems quickly Proven experience operating production systems with a careful, methodical approach to changes Strong collaboration and clear communication across distributed teams Willingness to mentor peers and share knowledge across the organization What You'll Get An established SRE team where you'll grow alongside engineers who have operated these systems at scale for years Real ownership where your ideas for tooling, automation, and process improvements can actually get implemented, not just filed away Problems and projects that provide valuable experience: infrastructure migrations, multi-region failovers, carrier grade availability, realtime media at scale A culture that invests in doing things right over doing things fast What we offer:   Comprehensive medical, dental, vision, disability, life insurance Health Savings Account (HSA), Flexible Spending Account (FSAs) and Commuter benefits Voluntary supplemental health coverage and life insurance 401K match and ESPP Paid time off and paid sick leave Paid parental and pregnancy leave  Family-forming benefits (IVF, Preservation, Adoption etc.) Emergency backup care (Child/Adult/Pets) Employee Assistance Program (EAP) with counseling sessions available 24/7 Free legal services that provide legal advice, document creation and estate planning Employee bonus referral program Student loan refinancing assistance Employee 1:1 coaching, perks and discounts program RingCentral’s Engineering team works on high-complexity projects that set the standard for performance and reliability at massive scale. What kind of scale? Millions of users today and hundreds of millions tomorrow. This is  your chance to help imagine, develop and deliver products that raise the technological bar, and power human connections. If you’re a talented, ambitious, creative thinker, RingCentral is the perfect environment to join a world class team and bring your ideas to life.  RingCentral’s work culture is the backbone of our success. And don’t just take our word for it: we are recognized as a Best Place to Work by Glassdoor, the Top Work Culture by Comparably and hold local BPTW awards in every major location. Bottom line: We are committed to hiring and retaining great people because we know you power our success. About RingCentral RingCentral is a global leader in agentic voice AI–powered business communications, delivering an integrated platform for business phone, SMS, contact center, workforce engagement management, video collaboration, and messaging. As the communications layer connecting businesses and customers, RingCentral is the front door of business communication and is in the advantageous position to apply AI at every phase of the conversation journey — before, during, and after each interaction. Our agentic AI portfolio includes autonomous voice-first AI agents that automate calls, assist in the moment, and analyze every interaction – enabling businesses to work smarter, respond faster, and connect more meaningfully with their customers. Visit ringcentral.com to learn more. RingCentral is an equal opportunity employer that truly values diversity. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We are committed to providing reasonable accommodations for individuals with disabilities during our application and interview process. If you require such accommodations, please click on the following link to learn more about how we can assist you. If you are hired in Colorado, the compensation range for this position is between $94,850 and $135,500 for full-time employees, in addition to eligibility for variable pay, equity, and benefits. Benefits may include, but are not limited to, health and wellness, 401k, ESPP, vacation, parental leave, and more! The salary may vary depending on your location, skills, and experience.