People Matter

Senior Site Reliability Engineer (based in Tokyo)



Software Engineering
Tokyo, Japan
Posted on Tuesday, October 24, 2023

At F5, we strive to bring a better digital world to life. Our teams empower organizations across the globe to create, secure, and run applications that enhance how we experience our evolving digital world. We are passionate about cybersecurity, from protecting consumers from fraud to enabling companies to focus on innovation.

Everything we do centers around people. That means we obsess over how to make the lives of our customers, and their customers, better. And it means we prioritize a diverse F5 community where each individual can thrive.

Role Overview:

We are looking for a Senior SRE engineer to join our team! You will participate in the design and implementation of our edge computing platform that is used to deploy global, scalable and secure applications. Your work includes, but not limited to, API definition, implementation, deployment, operational management, and debugging.

Sounds interesting? Read on!

What You'll Do:

  • Develop tooling, processes to make sure F5 services are highly available, scalable and highly performant

  • Design and deliver infrastructure solutions that will help build, deploy and handle the service components of the platform

  • Remediate security vulnerabilities in our services, platform on regular basis

  • Manage production environment by monitoring availability and alerts and promptly remediate any issues that arise in production environment

  • Investigate various open source and proprietary technologies, components, libraries, tools etc. and help build a highly available, highly scalable and easily manageable system

  • Partner with development teams to improve services on an on going basis

  • Participate in on-call rotation

  • Understand customer environment, config and usage to provide fast troubleshoot and smooth operation and commit to customer success

What You’ll Bring:

  • Great communicator with English and Japanese language proficiency (reading, writing and speaking)

  • 6+ years of experience as an SRE Developer/Operations Engineer

  • Solid understanding and hands on experience with Kubernetes

  • Provable proficiency in Go programming

  • Technical confidence and familiarity with DevOps tools

  • Solid experience with at least one of the cloud platforms (AWS, Azure, GCP)

  • Deep understanding of Linux. Prior experience as a system administrator is highly desirable

  • Hands on experience with networking, DNS, Security, Virtualization, Containers

  • BS/MS degree in Computer Science or equivalent

  • Ability to prioritize and multitask when managing complex technical issues

What You’ll Get:

Apply if you believe your own unique capabilities can contribute to the success of this role and our organization!


The Job Description is intended to be a general representation of the responsibilities and requirements of the job. However, the description may not be all-inclusive, and responsibilities and requirements are subject to change.

Please note that F5 only contacts candidates through F5 email address (ending with or auto email notification from Yello/Workday (ending with or

Equal Employment Opportunity