Backend Engineer

Job Description

PayPay Securities, as an important part of PayPay’s financial ecosystem, has launched “Point Management” with over 20 million users and “PayPay Asset Management, the first initiative in Japan that enables asset management on a payment application. Now that the business foundation of the financial ecosystem is finally in place, we intend to expand our business to change the structure of asset management in Japan, with the main target being those who have not yet started asset management or were not interested in it before.

To achieve our goal, PayPay Securities is preparing to bring in technical talents not only from Japan but also globally, just as we have done with PayPay’s product division. As a Backend Engineer, you will be collaborating with engineers, designers and QAs, and working in an environment where you can be one of the founding members to build up a new organization within PayPay Securities.

※ Please note that you cannot apply or be selected in parallel with PayPay Corporation, PayPay Card Corporation and PayPay Securities Corporation.

Highlights of the opportunity :

Be part of the team to build up a new organization and environment

Develop skills in making business plans from a high perspective, through the high-level coordination with departments and affiliated companies within PayPay Group to support the top management’s decision

Gain experience in a company that aiming to be the pioneer in the market to provide a brand new Mobile Securities services, which never had before during the era of Financial reformation

Able to utilize PayPay’s services and user base

Responsibilities :

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 :

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