Job Description :

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 :

- Strong experience with UNIX/Linux systems and using the CLI for troubleshooting.

- 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.