Site Reliability Engineer (Core backend team)

Technology Stack:

AWS, Kubernetes (EKS), Aurora RDS (PostgreSQL/MySQL), Kafka, Argo CD, Prometheus, Jenkins, GitLab CI, Terraform, Ansible, Python, Java, Ruby.




Site Reliability Engineer (Core backend team)

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. 

As a Site Reliability Engineer, your prime responsibilities are related to a tight work with engineering's teams on product improvement in observability, reliability, and scalability. 

Key Responsibilities:

  • Tight work with the engineering and architecture teams on identifying resilience gaps, and building & executing a roadmap for their resolution

  • Onboarding of K8S microservices to the GitOPS-based CI/CD process and push microservices migration from semi-manual GitOPS releases to the fully-automated zero-downtime CI/CD process

  • Implement SLI/SLO for K8S microservices and build the process to follow them. Identify observability gaps, and execute a roadmap for their mitigation

  • React to production issues as an on-call engineer, participate in the RCA process, and write runbooks & automation to mitigate possible issues in the future

  • Develop, test, execute & support disaster recovery plans for mission-critical services and sub-systems

  • Capacity planning & cloud infra cost optimization

  • Implement security & compliance requirements


  •  3+ years of technical experience in the same or similar role supporting large-scale and high-load production systems

  • Experience in the development and support of public cloud infrastructure

  • Hands-on experience in running HA applications and development of the CI/CD process in Kubernetes

  • Proven programming skills in Python, Go or similar

  • Good knowledge of Linux environment, TCP/IP, network routing, DNS

  • Familiar with SRE principles, DevOps practices, and modern cloud-native landscape

  • Accuracy, attention to details, ability to follow processes

  • Good communication skills with English level intermediate or above


  • Experience working with contact centers, VoIP solutions;

  • Ability to read and troubleshoot Java code if needed;

  • Experience in SQL/NoSQL DB's or attitude to develop skills in this field. 


  • 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