Senior Site Reliability Engineer (SRE)

Tokyo
Remote OK - Anywhere in Japan
Full-time
March 12, 2024

About KOMOJU

KOMOJU (by Degica) is the leading cross-border payment gateway for Japan. We power payments for companies like the video game distribution platform Steam and the popular mobile app TikTok. Today, we help thousands of merchants by providing them with the payment infrastructure they need through developer-friendly APIs to integrations on popular platforms like Shopify and Wix; we help our merchants grow in all markets they are expanding.

About the position

KOMOJU platform connects thousands of merchants payment requests to a large number of payment gateways. In the SRE team, we are responsible for each of our merchants successfully creating payment transactions with the large number of payment gateways that we support. Our platform connects with the largest payment gateways in Japan, such as all the major credit card acquirers, PayPay, all the convenience store payments, LinePay, MerPay, and much more. Our team is responsible for keeping the platform up to handle the payments reliably. In this senior SRE engineer position, you will get a unique opportunity to work on many technologies, ranging from specialized payment-related technologies to developing our cloud-native services on AWS. As credit card transactions are a large portion of Degica’s payments, you will be closely working with our accounting and business departments as well, collaborating and coordinating with them on various projects.

Responsibilities

Actively participate in improving and maintaining our AWS infrastructure
Implement monitoring and alerting to the system
Implementing and maintaining the CICD pipeline
Troubleshooting and debugging the system
Improving developer productivity with tooling
Securing the system and adhering to compliance

Requirements

Experience with AWS cloud platform
Experience with IaC tools Terraform or Cloudformation
Knowledge of Linux administration and networking protocols
Working knowledge of one or more programming languages, such as Ruby, Python, or Go
Experience with Docker containerization and its orchestration tools like ECS
Experience with monitoring tools such as DataDog, New Relic, Prometheus, etc.
Knowledge of RDBMS such as MySQL and PostgreSQL
Experience in working with CICD tools such as GitHub Actions, Jenkins, Circle CI, etc.

Good to have

Strong communication skills to work closely with outside companies and various departments inside the organization
Knowledge of TCP/IP and other networking protocols
Experience with AWS Direct Connect

Benefits

At Degica, we embrace remote work while also offering office space for those who prefer in-person collaboration
10 days of regular vacation, an additional 5 days of summer, and 5 days of winter vacation
Paid birthday holiday
Budget for self-learning allowance to ensure our employees’ skills remain current
Language training for Japanese

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About KOMOJU

KOMOJU (by Degica) is the leading cross-border payment gateway for Japan.

KOMOJU powers payments for leading companies, including the video game distribution platform Steam and the popular mobile app TikTok. Today, the company supports thousands of merchants by providing robust payment infrastructure—ranging from developer-friendly APIs to integrations with widely-used platforms like Shopify and Wix—enabling businesses to scale effectively in new markets.

In terms of engineering, KOMOJU fosters a developer-centric and inclusive culture. The team is committed to continuous improvement through regular self-evaluation and values individuality, recognizing the unique strengths that each engineer brings to the organization.

As KOMOJU grows, its development processes evolve accordingly. The engineering culture is largely self-organizing, with each engineer enjoying significant ownership over their projects. This environment empowers engineers to showcase their strengths while continuing to develop professionally.

Japanese Language Policy
With around half of KOMOJU’s total members (and around 90% of engineers) coming from outside Japan, teams generally use English for written communication(e.g. Slack, Github).

Verbal communication is also primarily in English.

However, quite a few people can speak both English and Japanese fluently, so Japanese may be spoken at times during meetings, especially when they involve teams other than engineering.

Overall, the language spoken depends on the team. The dev team uses mostly English, but the HR team (for example) speaks primarily Japanese.
Visa Sponsorship
KOMOJU sponsors visas for candidates living outside of Japan. KOMOJU also helps out with relocation (searching for apartments etc.) but they don’t have a formal policy for this. The support offered depends on each individual case. They do always pay for flight tickets to Japan in the case that someone moves from abroad.
Paid Leave
KOMOJU offers a generous vacation policy. In line with standard practices in Japan, employees begin with 10 days of paid time off (PTO) in their first year, with the number increasing in subsequent years based on Japanese labor law.

In addition to this, KOMOJU provides 5 extra vacation days during the summer and another 5 days for year-end holidays.

Employees also receive a day of birthday leave each year. Altogether, this adds up to 21 vacation days annually, not including Japanese public holidays. KOMOJU also offers maternity leave, paternity leave, and sick leave.
Benefits
💻 New tech gear

👩‍🎓 Skill development support

💛 Support for attending conferences

📕 Learning Budget

👶 Parental Leave

👩‍🏫 Language Learning Support

💜 Social security / insurance benefits included

🏥 Healthcare insurance

💚 Pension insurance

🚃 Commuter allowance

🛂 Visa and PR sponsorship

👍 Motorized sitting / standing desks when working from the office

🍱 Free office lunch twice a week
Engineer Interview Process
Engineering Roles

KOMOJU aims to keep their hiring process thoughtful and efficient. Typically, it involves 3–4 stages depending on the role:
- Initial Screening
- Take-home Exercise
- Technical Interview (Team Interview)
- Final Interview with Leadership
Throughout the process, the team evaluates technical skills and looks for alignment with team culture and potential for long-term growth.
Work style
KOMOJU operates as a remote-first company while placing a strong emphasis on personal connections and close collaboration. The company maintains an office in the Kichijoji area of Tokyo, which employees are welcome to visit for in-person collaboration and company events, such as weekly lunches provided at no cost.

Team members have the flexibility to work from anywhere within Japan, as well as up to three months per year from abroad. KOMOJU also offers flexible scheduling, allowing employees to set their own hours as long as they are available during the company’s core hours, Monday to Friday from 10:00 to 15:00 JST.