• Develop and operate the Backend Application system for PayPay Securities product (PHP, Java, SpringBoot, Kotlin, MySQL/AuroraDB)
• Design large scale systems with high complexity to support our high throughput applications
• Understand how to leverage infrastructure for solving such large scale problems
• Develop tools and contribute to open source wherever possible
• Adopt problem solving as a way of life – always go to root cause!

Qualifications :

• 3-5 experience in developing Backend Application for company products
• Experience in using Java/PHP under professional environment, or if you are non-Java user, excellent skills in generalized programming languages, such as Scala, Python and Go.
• Interest and ability to learn other coding languages as needed.
• Experience with NoSQL databases and distributed cache.
• Strong fundamentals in data structures, algorithms and object oriented programming
• In-depth understanding of concurrency and distributed computing
• Degree in Computer Engineering or Computer Science or 5+ years equivalent experience in SaaS platform development
• Business level in either English or Japanese (JLPT N1)

Preferred Qualifications :

• Experience with implementing platform components such as RESTful APIs, Pub/Sub Systems, Database Clients
• Experience with AWS services
• Experience in system design, development of web system which handles massive amount of transactions or requires scalability
• Experience with Microservices
• Experience in working for system development in securities, finance, or similar industries
• Experience in developing inhouse Product/Service