CDN Platform Reliability Engineer

Computer Futures is recruiting a CDN Platform Reliability Engineer for a long-term contract opportunity with a leading global technology company in Tokyo.

You will join a multicultural Platform Reliability Engineering team responsible for mission-critical CDN, gateway, external proxy, and security services supporting high-traffic platforms across the organization.

This is a hands-on production role for an engineer who can operate reliable, traffic-facing infrastructure and troubleshoot across Linux, Kubernetes, CDN, proxy, networking, automation, monitoring, and security layers.

Responsibilities

• Operate and improve production CDN, gateway, caching, external proxy, and security services
• Develop and maintain Ansible playbooks and configuration-management automation
• Support Chef cookbooks or comparable server-configuration workflows
• Ensure consistent and reliable server configurations across environments
• Build, maintain, and optimize CI/CD pipelines
• Integrate automated testing, deployment, and monitoring into CI/CD workflows
• Manage production Linux, Docker, and Kubernetes environments
• Configure and manage Squid or comparable proxy technologies
• Monitor service availability, latency, traffic, caching, and infrastructure health
• Troubleshoot incidents across CDN, proxy, Linux, Kubernetes, DNS, networking, and security
• Conduct root-cause analysis and implement preventive improvements
• Maintain high availability, performance, security, and SLA standards

Required experience

• 5+ years of professional experience in DevOps, Site Reliability Engineering, Platform Engineering, Linux Engineering, or Infrastructure Engineering
• Hands-on experience using Ansible for configuration management and automation
• Strong Linux or Unix production-server administration experience
• Production experience with Kubernetes or OpenShift and Docker
• Experience building or materially improving CI/CD pipelines using Jenkins, GitLab CI/CD, CircleCI, GitHub Actions, or similar tools
• Hands-on experience with Squid or comparable proxy technologies, such as Nginx, HAProxy, Envoy, or Varnish
• Experience with monitoring and logging tools such as Prometheus, Grafana, ELK, Elasticsearch, Datadog, Splunk, or Dynatrace
• Strong understanding of networking, DNS, HTTP traffic, system security, and infrastructure troubleshooting
• Production incident response and root-cause analysis experience
• Business-level English

Candidates must also have meaningful production experience in at least one of the following areas:

• CDN or content-delivery infrastructure
• Edge or globally distributed infrastructure
• Proxy, gateway, caching, or load-balancing services
• DNS, traffic routing, or high-volume network services

Experience with Akamai, Fastly, Cloudflare, Amazon CloudFront, Google Cloud CDN, or another CDN platform would be particularly relevant.

Scripting experience with Python, Bash, or Go, along with exposure to AWS, Azure, or GCP, is highly desirable. Experience with CDN security, WAF, DDoS protection, TLS, or certificate management would also be advantageous.

We are looking for someone who has personally operated, automated, monitored, scaled, or troubleshot production infrastructure. Basic CDN usage for static website delivery or experience limited to running existing deployment pipelines will not be sufficient.

Position details

• Workplace: Hybrid, 4 days in the office 1 day WFH
• Working hours: 9:00 to 17:30, Monday to Friday
• Contract: Initial two months followed by three-month renewals, Long-term engagement
• Working language: English
• Japanese: Not required
• Visa sponsorship: Available
• Relocation support: Not provided
• Salary: Competitive

Candidates currently based outside Japan are welcome to apply but must be prepared to arrange and fund their own relocation.

Overseas applicants should have a genuine, well-researched interest in working in Japan and a realistic understanding of the local technology job market, compensation levels, living costs, and renewable contract structure.

This is not a remote position.

Please apply with an English CV clearly describing your hands-on responsibilities across CDN or traffic-facing infrastructure, Linux, Kubernetes, Ansible, proxy management, networking, and production incident response.