Java Architect - Professional Dispatch

【Position Outline/ 依頼概要】

You will join the Payment Gateway team as a Senior Engineer — a hands-on leader who delivers through execution. Your primary output is high-quality software: design documents, production code, and reliable deployments.

In addition, you will play a key role in improving overall team quality by bridging the gap between experienced engineers and the broader team. You will connect architectural intent with day-to-day implementation — staying close enough to the system design to guide direction, and close enough to the code to ensure correct execution.

【Responsibilities/ 担当業務】

■Job Responsibilities

・Lead basic design, component design, and database schema for payment system features

・Establish and maintain clear architectural guidelines and standard coding rules

・Develop, test, and deploy end-to-end production-grade Java applications reliably

・Conduct thorough system design and code reviews focusing on quality and security

・Guide team members by bridging design intent and practical codebase execution

■Requirements:

・8+ years of professional hands-on software development experience using Java

・Proven track record delivering systems in high-traffic, transaction-critical spaces

・Strong ability to independently lead architectural, component, and database design

・Solid experience in code reviews and enforcing unified engineering standards

・Ability to quickly comprehend unfamiliar codebases and analyze risks independently

・Fluent-level Japanese language proficiency

■Preferred Qualifications:

・Experience with payment gateway systems or financial integration architectures

・Proficiency with Spring (MVC/Boot), MyBatis, JUnit, and Mockito frameworks

・Familiarity with modern DevOps tools including Jenkins, Git, and Gradle

・Experience with Agile/Scrum management frameworks and team processes

・Hands-on cloud infrastructure experience working on AWS Cloud platforms

■Salary

7,500,000 JPY ～ 8,500,000 JPY

*Finish your application by filling out the required information.

We look forward to your application.