Job Description

Do you want to join a Fin-Tech company to start new career in Japan?

Require only English.

■ Job Title: Backend Engineer

■ Company Overview

Recently provide CashFlow Card, give users with more accessible and convenient fintech services that were previously not possible with credit cards and credit services by integrating with the CashFlow payment platform. We are looking for professionals who are passionate about refining our products at an overwhelming speed that no other company can match, and promoting the spread of cashless payments in Japan and the financial life platform that uses them. 

■ Your Role and Responsibilities 

We are seeking backend engineers to construct, or reconstruct, robust services with a keen focus on scalability and maintainability.
CashFlow Card aims to revolutionize the credit card industry, simplifying payments from two distinct perspectives:

• Enhance the credit card experience: We have numerous functionalities in the pipeline to enhance our product, including integration into the CashFlow ecosystem as CashFlow Card is part of the CashFlow Group.

• (Re-)design our systems architecture: We aim to reassess and enhance the background operations to support a superior user experience. This involves tackling complex design challenges to ensure optimal performance.

• Assist in designing, implementing, and delivering large-scale, intricate systems, collaborating closely with product managers, frontend engineers, and other team members.

• Utilize infrastructure effectively to address large-scale challenges.

• Contribute to the team's collective knowledge by sharing insights, engaging in code reviews, and offering feedback to maintain and uphold best practices.

• Prioritize triaging, debugging, and resolving product issues or other incoming inquiries efficiently.

• Embrace problem-solving as a fundamental approach – always aim to identify and address root causes. Take responsibility for supporting the code you develop in production.

• Back-end services:
o Main implementations are in Spring Boot, with a mix of Java 11/Spring Boot 2 and Java
17/Spring Boot 3.
o Some legacy systems are written in Java EE.
o Testing is done with JUnit and Mockito
o Deployment relies on AWS ECS
o CI/CD is handled by AWS CodePipeline

• Infrastructure
o All our services run in AWS
o Infrastructure is managed by AWS CloudFormation
o AWS CloudWatch is used for observability

• Coding environment: GitHub, IntelliJ, Gradle

• Documentation & Project management: Confluence, Miro, JIRA

• Communication: Slack, Zoom, Office 365

■ Experience and Qualifications

• Proficient in utilizing Spring Boot within a professional setting.

• Proficiency with both RDBMS and NoSQL databases, as well as distributed cache systems.

• Solid understanding of data structures, algorithms, and object-oriented programming principles.

• Extensive knowledge of concurrency and distributed computing.

• Hold a degree in Computer Engineering or Computer Science, or possess equivalent experience of 5+ years in SaaS platform development.

• Fluent in English for business communication.

■ Additional Preferred Qualifications

• Proficiency in implementing platform components such as RESTful APIs, Pub/Sub Systems, and Database Clients.

• Proven experience in designing systems for high-traffic applications with scalability as a key consideration.

• Hands-on experience with microservices and event-driven architecture.

• Previous exposure to working in multicultural environments.

• Conversational Japanese is advantageous.

■ Good Reasons to Join

•Full remote everywhere in Japan.

• Super Flex Time (Core Time: 12:00pm ~ 3:00pm JST)

• In principle, 9:00am ~ 5:30pm (actual working hours: 7h30m + 1h break)

• Every Sat/Sun/National holidays (In Japan)/New Year's break/Company-designated Special days
Paid leave:

• Annual leave (up to 16 days in the first year, granted proportionally according to the month of employment. Can be used from the date of hire)

• Social Insurance (health insurance, employee pension, employment insurance and compensation insurance)

• 401K

■ Salary 

• Monthly salary

• Reviewed twice a year

• Bonuses paid twice a year (April and October) according to the company's performance and
the individual's evaluation

• Overtime allowance, Late overtime allowance, Commuting and transportation expenses, Work
style support allowance