Senior SRE engineer(Telco)



Senior SRE engineer(Telco)

JettyCloud looks for IT professionals on behalf of RingCentral to join its team in Sofia.

RingCentral Bulgaria is a new European branch of an American company RingCentral. JettyCloud is a software R&D center that works for RingCentral. 

RingCentral builds a high-available cloud-based contact center that combines all kinds of telephony features and many digital communication channels with customers (WhatsApp, Facebook, Twitter, email, SMS, etc.) into one service. We develop a modern and reliable product that helps companies be closer to their customers and respond to their requests as quickly and efficiently as possible


  • Support Linux-based servers and ensure smooth operation of the service.

  • Maintain telephony services and investigate related problems .

  • Participate in shifts, solve problems and incidents on the highly loaded system with an SLA of 99.999%.

  • Interact with other teams within your area of responsibility.

  • Analyze the operation of services and infrastructure and participate in projects to improve the quality of systems.


  • - Experience working with UNIX-like systems and using the CLI to troubleshoot and diagnose server problems.

  • - Experience with highly loaded systems, knowledge of fault tolerance, service monitoring, and optimization techniques.

  • - Ability to use Python/Golang/Shell to automate work and develop internal tools.

Would be a plus:

  • Understanding of networking protocols and SIP functionality.

  • Experience working with Kamailio, Apache Kafka, Nginx, and ZeroMQ technical solutions. 

  • Experience with k8s (Kubernetes), AWS cloud (Amazon Web Services) and EKS, Terraform, Ansible.

  • Experience with various monitoring systems, such as Zabbix, TICK, Elastic Stack (ELK), and Grafana.

You will get experience in:

  • Working in a high-performance team in a strong IT company.

  • Debugging Java and C++ programs using industry-standard technologies like Apache Kafka, Zookeeper, Kamailio, Nginx, etc

  • Participating in the software development process, where the Systems Reliability Engineer team plays a vital role.

  • Maintaining a worldwide distributed system.

  • Accomplishing 5-nines Service Level Agreements and having fun.


  • Well-coordinated professional team

  • Cutting edge technologies, interesting and challenging tasks, dynamic project, great opportunities for self-realization, professional and career growth

  • Additional Health and Life Insurance Package

  • Employee Assistance Program

  • 25 vacation days

  • ReBenefit Platform Account with 400BGN value monthly

Apply for job


Contact us

Write to us at or send a message to our recruiters