Application Engineer (Credit Card Service)

Job Type
7,000,000 JPY – 10,000,000 JPY per year
Japanese Level
English Level
Advanced (TOEIC 860)
Start Date


A large Internet service company is hiring a Application Engineer (Credit Card Service).

The Financial Service Development Section is the tech team to develop the various services for Fintech Business in the group.


In this position, Application Engineers develop the product for Fintech Business that produces business value directly deploying the data science development result to the production as production ready API.

They develop core components of the APIs or Data Pipeline for generating Machine Learning Model.

They will get experiences to construct high performance, high availability and high scalability system developing real-time system processing requests from 100 million of site users.

And they collaborate closely with specialists in several fields in Fintech company such as Fraud Detection Specialist, Data Analyst or Data scientist.



- Design, Develop and Operate DataPipeline

- Design, Develop and Operate API

- Design, Develop and Operate service monitoring and configuration management system


【会社概要 | Company Details】

Our client is a large global Internet service company that has enjoyed sustained growth as they continue to expand their business in various new areas and industries. This is a great opportunity to work in a diverse and international environment in Japan. Our client actively strives to be an equal opportunity employer, and they have many female and foreign nationals in upper management positions. Their brand has also gained global recognition as they sponsor some of the world's most famous sports teams. Our client prides themselves in providing a comfortable working environment for their employees. Engineers are welcome to choose their own setup (Windows/Mac, etc.); whatever makes them comfortable! Free meals are also provided at the company cafeteria. Their chefs work to create exciting new menus and dishes, so employees never get tired of the food!
【就業時間 | Working Hours】
Flex (7.5 hours a day with core time 11:00-15:00)
*When there is Asakai (usually Monday morning), the core time is 8:00-12:00
【休日休暇 | Holidays】
Saturday, Sunday, and National Holidays, Year-end and New Year Holidays, Paid Holidays, Other Special Holidays
【待遇・福利厚生 | Services / Benefits】
各種社会保険完備(厚生年金保険、健康保険、労災保険、雇用保険)、 屋内原則禁煙(屋外に喫煙所あり)、 通勤交通費支給等
Social insurance, No smoking indoors allowed (Designated smoking area), Commutation Fee covered up to 20,000 JPY per month, Free breakfast, lunch and dinner, Casual clothes is acceptable

Required Skills

- Development experience using one of the following languages (Golang, Java, C++, Scala, Kotlin, Node.js, or Python)

- Software development experience (and consistent development experience in requirements definition, specification formulation, implementation, testing, release, and maintenance operation)

- Development experience with systems based on Microservice architecture

- Skills in dependency management, development with awareness of maintenance and additional requirements, and ability to write accurate test code

- Ability to design and implement high performance, high availability and high scalable system

- Ability to problem solve and troubleshoot after deploy

- Ability to collaborate with the team, and work efficiently with stakeholders in the organization

Preferred Skills

- Computer science or related educational background

- Development experience in Kubernete

- Experience in Agile and scrum development

- Experience in architecture design, such as server, DB, network, etc.

- Experience in operation of relational or nonrelational DB

- Experience in log aggregation or visualization platform construction using tools such as ELK stack

- Experience in CI/CD Pipeline construction using tools like Jenkins

- Experience in distributed tracing system using tools like Zipkin

- - Experience in monitoring system construction for Microservices using tools like Prometheus and Grafana