Principal Software Engineer

Remote OK - Anywhere in Japan
Full-time
June 25, 2024

We are looking for a Principal Software Engineer to work on our various systems which need high scalability, reliability and availability. These challenges require creative thinking and a deep understanding of how software and platform work.

Our ideal candidate is an ace problem solver and a learner at heart. You should have a very high degree of comfort in a programming language of your choice. We offer a flexible work schedule and you get your choice of tools (both hardware and software) and most importantly, the opportunity to work on tough problems with the brightest minds around you. So, if challenges excite you, and you're ready for a big one, let us know.

Responsibilities:

Design, develop, test, deploy, maintain and improve software and core platform
Lead technical aspects for multiple projects through hands-on execution and guidance of other engineers
Provide architectural blueprints and technical leadership.
Provides input and guidance during all phases of programs to solve challenging technical issues.
Build common platforms to support different business vertical application systems
Develop tools and contribute to open source wherever possible
Adopt problem-solving as a way of life – always go to the root cause!

Experience:

Solid foundation in designing, implementing, and maintaining a large-scale distributed system.
Experience in developing distributed platform systems such as Messaging Platforms, Pub/Sub Systems, Databases, Distributed Computing Frameworks, and Schedulers.

Tech Stack:

Our technology stack may vary based on project needs. Currently, we utilize:

Programming Languages: Java, Kotlin, Scala
Frameworks and Tools: Spring Boot, JUnit, Resilience4j, Feign
Databases: MySQL/AuroraDB, DynamoDB, ELK, Kafka, Redis, TiDB
Deployment and Orchestration: Docker, Kubernetes, ArgoCD, AWS, GCP
Development Tools: GitHub, IntelliJ, Gradle, Maven, npm/yarn, Flyway, Jenkins
Data Analytics: BigQuery, Kibana, Spark
Diagramming Tools: PlantUML, draw.io, miro.com
Communication: Slack, Zoom

Qualifications:

Degree in Computer Engineering or Computer Science or 7+ years equivalent experience in software development
Strong fundamentals in data structure, algorithm, operating system and object-oriented programming
Deep understanding of concurrency, distributed computing, large-scale system, messaging and algorithm
Software development experience in one or more general-purpose programming languages
Interest and ability to learn new technology stacks as needed

Preferred Qualifications:

Experience in working for system development in finance, payment, or similar industries
Experience with AWS services
Contribute to open-source projects
Language ability in Japanese and English is a plus (We have a professional translator but it is nice to have language skills)

Portrait:

Experience: Demonstrated experience designing and implementing large scale, high performance, micro-service based architectures utilizing new concepts and technologies where appropriate.
Ownership: A mentoring approach to owning, managing and improving the technical aspects of a large scale system end to end.
Communication: The ability to clearly and logically communicate your choice of technology and architectural decision based on its implementation strengths and limitations.
Commitment: As a professional, commit to the growth and business goals of the organization and create impactful results by your ownership.
Curiosity: Foster a development culture that explores new ideas knowing that we learn even from the ones that fail.

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About PayPay

PayPay, a fintech company that achieved more than 47M users within around 3 years since its launch in 2018 has hugely diversified employees who are from 40 different countries.

Our biggest competitor is "cash". We are seeking for people who can accept this challenge positively, brush up the product at a tremendous speed that other companies could never achieve, and who are passionate about promoting and spreading such a financial life platform in a short time along with professionalism.

PayPay’s policies during COVID-19 are as follows:

PayPay has been transitioning to remote work to ensure employees safety during the pandemic, and we’ll continue this even after it subsides.
While we’re open to considering engineers looking to relocate to Japan, travel restrictions have made it difficult to give a clear timeframe for relocation.
Until COVID-19 is settled and we're ready to issue visas, you can start working remotely from abroad.

Japanese Language Policy
At PayPay, there is a mixture of Japanese and English spoken. Around 80% of their product team’s discussions happen in English, and they have technical interpreters and translators on staff to facilitate any translation necessary. Some members can speak both English and Japanese, but some can only speak either English or Japanese.

PayPay doesn’t have an official shared language, but in practice English tends to be the primary language used for internal communications and technical discussions like code reviews.

Instead of requiring that everyone be able to speak a specific language, PayPay expects an ability to communicate with mutual respect and a drive to ensure that you’re understood. The product team values proactive communication highly.
Visa Sponsorship
PayPay sponsors visas for applicants from overseas.
Paid Leave
- Days Off: Saturdays and Sundays. National holidays. Year end holidays from December 29th to January 4th.
- Holidays: Annual paid leave, congratulatory or condolence leave, maternity leave and etc.
Benefits
🌎 Translation/interpretation support (EN<>JP)

🧡 Support for translation or other administrative tasks in Japanese

👍 Support from bilingual PIC for engineers

🇯🇵 Free Japanese lessons on company time

🏠 Work from home allowance (100,000JPY/year)

💻 PC and phone are given (based on the company’s regulations)

👩‍🎓 Training Program: We have various training programs for different kinds of needs

💜 Social security/insurance benefits included

💛 Defined contribution pension system (TBC)

🏥 Health insurance

🚃 Transportation coverage (up to ¥150,000/mo)
Engineer Interview Process
Engineering Jobs

1) Application Review (1-2 weeks)
We review your profile based on your submitted materials

2) Code challenge (online)
We send you a code challenge after reviewing your resume. Please be prepared to take code challenge after submitting your application! It takes at most 3-4 hours to complete

3) 1 - 3 Interviews (online)
You will have 1 to 3 interviews with our engineers and HR
Work style
PayPay has introduced a highly unique “Working From Anywhere at Anytime” (WFA) HR system.

They work fully remotely, so as long as you’re in Japan you can generally live and work from wherever you want. Of course, there may be times you’re asked to come to the office for teambuilding and other activities (typically 1-2 times a month).

This system enables members to receive salary and benefits relative to a world-class city and work with world-class peers without actually having to live in a city. By changing how people at PayPay work, the system aims to provide a stimulating environment that enables members to build an amazing product that’s beloved by its users.

※ Currently, remote work is limited to within Japan. There is no support for working from abroad at this time.

Work hours
- In principle, from 10:00am to 18:45pm (actual working hours: 7h45m＋1 hour lunch break from 12pm to 13pm in principle)
  ※ We use super flextime system which do not set core hours and also we may have overtime work based on business needs.