Site Reliability Engineer (AI Platform)

OpenTable; Toronto; On-site; CAD 140,000 - 190,000; Full time

Benefits offered by this job

Generous parental leave

Generous paid vacation

Paid volunteer time

Learning & development opportunities

Work from (almost) anywhere

Mental health support: therapy & Head+

Job summary

OpenTable is seeking a Site Reliability Engineer II on the Serving Platforms team to design and automate the core container stack and infrastructure powering our global applications.

You will work in a high-scale, self-hosted environment, acting as an expert in Kubernetes, Linux systems, and cloud-native automation to improve reliability, security, and efficiency across our platform.

Qualifications

• 5+ years of hands-on Linux experience (e.g., Ubuntu, CentOS) with kernel tuning, sysctl, and performance optimization.
• 3+ years using configuration management systems (Puppet, Chef, Ansible, SaltStack) in production environments.
• Proven experience building, operating, and troubleshooting bare-metal Kubernetes clusters (control plane, etcd, CNI).
• Proficiency with Go, Python, Ruby, Perl, or Bash scripting for automation and tooling.

Responsibilities

• Design, automate, and manage core container stack and infrastructure for global apps.
• Lead greenfield infrastructure projects and drive reliability, security, and efficiency.
• Own incident response, root-cause analysis, and postmortems for production issues.
• Develop self-service tooling and automation pipelines to reduce manual toil.
• Maintain high availability for Linux and Kubernetes control planes on self-hosted infrastructure.
• Collaborate with globally distributed teams to standardize platform engineering.

Skills

Linux systems

Kernel tuning

Cgroups/namespaces

System calls

Performance optimization

Go/Python scripting

Incident response/RCAs

CI/CD automation

Kafka/RabbitMQ

Public cloud (AWS/GCE/Azure)

Bare-metal Kubernetes

Observability (Prometheus/Sensu)

Distributed KV stores

Networking (IPtables/NFTables)

RPM/DEB packaging

Tools

Kubernetes

Puppet

Chef

Ansible

SaltStack

Kafka

RabbitMQ

GitHub Actions

Jenkins

CircleCI

Docker

etcd

Consul

Prometheus

Sensu

Proxmox

VMware

IPtables

NFTables

Job description

• As a Site Reliability Engineer II on the Serving Platforms team within Infrastructure Engineering, you will design, automate, and manage the core container stack and infrastructure powering our global business applications
• Operating in a high-scale, self-hosted environment, you will serve as a subject matter expert for Kubernetes, Linux systems, and cloud-native automation, directly driving the reliability, security, and efficiency of our platform
• In this role, you will collaborate with cross-functional engineering teams worldwide, lead greenfield infrastructure projects, resolve complex incidents, and build self-service capabilities that empower application developers across the organization
• Maintain, tune, and ensure high availability for the low-level Linux operating system and Kubernetes control plane across our self-hosted bare-metal infrastructure
• Architect, build, and maintain scalable container management, configuration management, and automation tools across global environments
• Investigate, resolve, and conduct root-cause analysis for complex infrastructure disruptions and performance bottlenecks at the system call level
• Participate in high-impact platform engineering projects and collaborate with globally distributed engineering teams to drive infrastructure standardization
• Participate in the team’s on-call rotation to support critical production systems and ensure operational resilience
• Develop and maintain self-service tools, automation pipelines, and robust infrastructure monitoring to eliminate manual operational overhead

Benefits

• Generous parental leave
• Generous paid vacation + time off for your birthday
• Paid volunteer time
• Enriched learning and development opportunities - leadership development & access to thousands of on-demand e-learnings
• Work from (almost) anywhere - wherever you do your best work
• Mental health and well-being - company-paid therapy sessions through SpringHealth, company-paid subscription to HeadSpace, and company-wide weeks off a year so the whole team can recharge

Qualifications

• 5+ years of hands-on Linux experience (e.g., Ubuntu, CentOS) with expertise in kernel tuning (sysctl), process management (cgroups/namespaces), system calls, and performance optimization3+ years of experience using configuration management systems such as Puppet, Chef, Ansible, or SaltStack in production environmentsProven experience building, operating, and troubleshooting bare-metal Kubernetes clusters from the ground up, including control plane, etcd, and CNI plugin managementProficiency with continuous system automation and scripting in languages such as Go, Python, Ruby, Perl, or BashDemonstrated experience responding to live service disruptions, leading root-cause analysis, and operating messaging systems (e.g., Kafka or RabbitMQ) in productionExperience operating, scaling, and monitoring AI/ML or LLM-powered services and workloads in high-concurrency production environmentsHands-on expertise with public cloud providers (AWS, GCE, or Azure) and containerized CI/CD pipelines (e.g., GitHub, Jenkins, CircleCI, Docker)Experience with distributed key-value stores (e.g., Consul, etcd, Zookeeper, Redis) and enterprise observability/alerting tools (e.g., Prometheus, Sensu)Familiarity with server virtualization infrastructure (e.g., Proxmox, VMware, Xen, OpenStack) and low-level networking concepts (IPtables/NFTables, routing, load balancing)Experience developing and maintaining OS-level software packaging (RPM/DEB) and participating in globally distributed software engineering teams