Senior SRE - VOIP

We are looking for an experienced Senior Site Reliability Engineer— someone who takes ownership, solves problems independently, and treats production systems with care and respect.

You’ll join a team that keeps business-critical telephony and communication services running with 99.999% availability. We need someone who not only reacts to incidents but also anticipates them — who improves systems, automates routine tasks, and helps shape how the team works.

Key Responsibilities:

• Support and maintain Linux-based servers and telephony services in production.
• Investigate and resolve incidents in a high-load, distributed environment.
• Participate in on-call shifts and ensure the stability of systems under strict SLAs.
• Analyze service performance, reliability, and architecture bottlenecks; propose improvements.
• Work with development teams to safely deliver and validate changes before production deployment.
• Contribute ideas and help evolve team processes, automation, and monitoring practices.

Requirements:

• 8+ years of Strong hands-on experience with UNIX/Linux systems, with deep proficiency in CLI-based diagnostics, system administration, and production troubleshooting at scale.
• Good understanding of networking protocols or SIP.
• Strong hands-on experience with Kubernetes (k8s) and containerized environments.
• Proven track record of working in production environments, with a careful and methodical approach to changes (testing before deployment, rollback planning, risk mitigation).
• Understanding of high-availability systems, fault tolerance, and performance optimization.
• Experience automating tasks with Python, Golang, or Shell scripts.
• Mindset of an SRE: you treat operations as an engineering discipline and continuously look for ways to make systems more reliable and efficient.
• Good command of English (B2 or higher) — ability to communicate effectively with distributed international teams (both written and spoken).

Would be a plus:

• Deep expertise in one or more areas (please highlight your strengths in your application).
• Hands-on experience with Kamailio, Apache Kafka, Nginx, ZeroMQ.
• Experience with AWS/EKS, Terraform, and Ansible for deployment and infrastructure automation.
• Experience with CI/CD pipelines (e.g., GitLab CI, Jenkins, ArgoCD).
• Knowledge of monitoring stacks like Zabbix, TICK, ELK, Grafana.

What you’ll get:

• Work in a strong, experienced SRE team that maintains global infrastructure across multiple regions.
• Hands-on experience debugging Java and C++ applications in large distributed systems (Kafka, Zookeeper, Kamailio, Nginx, etc.).
• Opportunity to influence how the team works — your ideas for tools, automation, or process improvements will be heard and implemented.
• Real experience achieving five-nines availability (99.999%) in production.
• Continuous learning, complex technical challenges, and a supportive environment.