NEWSLETTER

Cybozu

Tokyo

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Senior Backend Engineer, Microservices (Go)

Tokyo
Partial Remote
Full-time
January 6, 2026

Position Overview

We are seeking highly experienced backend engineers who are responsible for designing and developing backend systems for our new products. We use technologies such as OAuth2/OIDC, gRPC, Kubernetes, and distributed databases to build the backend.

As a senior backend software engineer, you will analyze the business and technical requirements, design software and systems, and implement them by collaborating with others. You will be responsible for the quality and maintainability of your code, so you must be a very good document writer and set up continuous integration systems with a good set of tests. In the early stage, you will also be responsible for running the services on Google Cloud and dealing with incidents.

Job Duties & Responsibilities

Analyze business and technical requirements to design our backend systems.
Implement the designed system yourself with good documentation and tests.
Review other backend engineers' design and code.
Collaborate with frontend engineers, product designers, and architects.
Build CI/CD pipelines.
Run and operate the backend services on Google Cloud.

Expected Knowledge, Skills, and Abilities

5+ years of experience working in development roles in B2B software engineering.
Hands-on experience in writing software in Go.
Experience with Kubernetes.
Knowledge and experience with CI/CD.
Professional English communication skills.

Additional Desirable Knowledge, Skills, and Abilities

Experience with Google Cloud, gRPC, or Istio/Envoy.
Knowledge of OAuth2, OIDC, SCIM, and SAML.
Experience in building AI features/functionalities
Experience in building and managing production services

Work Hours

Flexible working hours
Core collaboration time: Tue - Fri: 9am - midday (JST)
　・Note: This is because some teammates are in the US, we often have morning meetings from 9am - midday
Employees may determine their own start and end times, as well as break times, between 5:00 and 22:00.
Adjustments should be made to align with the team’s working style.
　・Example working hours: 9:00–18:00 (including a 60-minute break)

Location

Hybrid / In-Office (Tokyo)
We have a fantastic office in Nihonbashi, Tokyo .
In general, you can work remotely from home.
Working from the Tokyo office may be required, such as during the first three months for onboarding.

Salary Range

Salary Range（※1）: JPY 10,000,000 – JPY 12,000,000
Estimated annual salary: Base Salary (12 months) + Bonus (Base salary x 1 month x twice a year = 2 months)
Monthly salary system: Base salary is determined based on your skill set, experience, and abilities, etc.
An allowance for additional overtime（※2）is included in the base salary. 　
- However, work exceeding additional overtime agreed to between the employer and employee will be compensated separately.
Base monthly salary（※1）: JPY 710,000 – JPY 860,000
The base monthly salary breakdown as follows:
　・Base salary: JPY 540,950 – JPY 655,200
　・Allowance for additional overtime（※2）: JPY 169,050 to JPY 204,800

※Notes:
1. Depending on your skill set and experience, the amount set may be outside the above range.
2. Calculated based on 160 hours of scheduled working hours per month and 40 hours of additional overtime.

Benefits

Remote work allowance (5,000/month)
Employee stock ownership plan (company matches purchase of up to 10% of paycheck)
Skill development support/Language Learning Support (120,000 yen a year)
New tech gear (PC)
Commuter allowance
Comprehensive health and social insurance
Parental Leave
Visa sponsorship and relocation support will be provided for those who do not reside in Japan

Vacations

20 days of paid leave
5 days of Proactive Personal Leave
5 days of Family Care / Personal Sick Leave
Two days off per week (Saturday and Sunday), Public holidays in Japan

Selection Process

Document screening
Interviews (4 times, the 2nd interview is a technical interview)
Background Check, Reference check
Offer meeting

*We conduct a background check & reference check prior to the final interview.

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About Cybozu

Cybozu's purpose is to build a society brimming with teamwork. They offer the flexibility needed to work within a supportive, motivated, teamwork-driven environment.

Cybozu develops and delivers cloud-based collaboration services that enable diverse people to work together more easily and effectively. Today, they are one of Japan's most successful cloud-based companies, with four key products (Cybozu Office, Mailwise, Garoon, and Kintone) used every day by more than 175,000 businesses and nonprofit organizations worldwide.

Cybozu's Culture

To achieve their mission, Cybozu has five elements:

Embrace a common vision
Elevate individuality
Express yourself with openness and transparency
Exercise autonomy
Engage in dialogue and discussion

For more details about Cybozu's culture, please visit their site.

As Cybozu continues to expand globally, they are looking for individuals from all walks of life with unique and diverse life stories and life experiences.

They also offer comprehensive support, from visa acquisition assistance to English onboarding programs.

Global Recruitment

Cybozu's vision is to build a society brimming with teamwork.

To achieve their vision not only in Japan but across the world, they develop products for the global market. Their product development and sales teams are in the process of globalizing their operations. As part of this effort, Cybozu is seeking to hire more international members from Japan and abroad for the English-speaking team (*New Business Division) that is building next-generation groupware and workspace solutions, including advanced identity and access management, communications, collaboration, and more.

Work with Confidence

Cybozu provides support to ensure that everyone can perform and work confidently, regardless of the language they speak.

Onboarding

Cybozu offers an English onboarding program to help you understand Cybozu’s culture and ensure a seamless start. The onboarding sessions in English will help you familiarize yourself with Cybozu's culture and set up your IT equipment. You’ll also be given an office tour, and a consultation service will be at your disposal to discuss any language-related challenges.

Visa and Relocation Support

※ Relocation and visa support are available only for specific positions.
　- Please check the individual job descriptions for details.

For those who need a Japanese work visa to enter Japan, Cybozu will sponsor and provide support throughout the visa acquisition process, including covering the associated costs. If relocation to Japan is necessary for your employment, Cybozu offers comprehensive support to ensure a stress-free relocation, from the physical move to settling into your new living arrangements. Additionally, they will cover the cost of airline tickets, moving expenses, and other related costs (up to a certain amount).