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Job ID : 1566565 Date Updated : November 25th, 2025

SWE/SRE: Build from Scratch at Japan's Fastest-Growing SaaS!

Location Tokyo - 23 Wards
Job Type Permanent Full-time
Salary 6 million yen ~ 12 million yen

Work Style

Flex Time

Job Description

Company Overview:

We are actively looking for a Software and Site Reliability Engineer who can implement scalable, reliable, and reusable systems for a rapidly growing B2B SaaS sales-tech startup in Japan with strong financial momentum. Our co-founders come from leading global companies and were recognized on the Forbes 30 Under 30 Asia List. Our team is proudly global, with members with backgrounds from top tech companies such as Google, Microsoft, Indeed, and LINE. You'll join a global, ambitious, and fast-moving team where your ideas truly shape the future.

 

Who you are:

We are looking for a highly collaborative professional who:

  • Manages and Evolves: Is an experienced engineer capable of owning the technical health and strategic evolution of our Amazon EKS platform.
  • Designs for Scalability: Transforms intricate infrastructure into simplified, well-defined, and self-service building blocks for the broader team.
  • Drives Quality: Acts as a champion for robust operational practices, including advanced testing, smooth rollout strategies, and ensuring production readiness across all services.
  • Collaborates for Performance: Partners effectively with product engineers to proactively integrate and elevate standards for system availability, comprehensive observability, and service performance.

 

Why you should apply:

  • High Impact & Innovation: Drive the creation of entirely new products and own the opportunity to build systems from scratch.
  • Accelerated Career Growth: Access abundant leadership training and career development programs while continually expanding your skillset in a challenging, fast-paced setting.
  • Global & Diverse Team: Work alongside international colleagues in a welcoming environment where both English and Japanese are part of the daily conversation.
  • Ultimate Flexibility: Benefit from a Hybrid work model and fully flexible work schedules to optimize your work-life balance.

General Requirements

Minimum Experience Level Over 3 years
Career Level Mid Career
Minimum English Level Business Level
Minimum Japanese Level Business Level
Minimum Education Level Associate Degree/Diploma
Visa Status No permission to work in Japan required

Required Skills

Requirements:

  • 4+ years of production SRE/Platform/Infrastructure experience.
  • Proven ability to run and scale Kubernetes (Amazon EKS) effectively in a production setting.
  • Comprehensive AWS knowledge (networking, data services, compute, etc.).
  • Skilled in automation via Infrastructure as Code (IaC), ideally with Terraform or AWS CDK.
  • Mastery of observability concepts (metrics, logging, tracing, SLOs).
  • Strong background in computer science, including algorithms and software design.
  • Hands-on coding experience in languages like Go, Python, or Java.
  • Fluency in English or Japanese.

Job Location

  • Tokyo - 23 Wards

Work Conditions

Job Type Permanent Full-time
Salary 6 million yen ~ 12 million yen
Industry Internet, Web Services

Job Category