【REMOTE】Back-end Engineer

About PayPay
▼About PayPay
PayPay, a fintech company, that achieved more than 40M users within around 3 years since its launch in 2018 has hugely diversified employees who are from 40 different countries. To build "PayPay", we allied with Paytm, the biggest payment service company in India. Based on their customer-first technologies , we created and expanded the smartphone payment service in Japan.

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.

About our working style, we had introduced a new personnel system called WFA (Working From Anywhere*). At PayPay, we work fully remotely in Japan. Therefore, the working place or your living place doesn't matter. Even if you are living in a local area, the salary and benefit package will be at an international level while you enjoy working with world class colleagues. You will find such a way of working at PayPay!
*This WFA policy is applicable only within Japan.
Job Description
▼PayPay is looking for a Back-end engineer to work on our payment system to deliver the best payment experience for our customers.

• 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! Support the code you write in production.

【Tech Stack】 We select the best combination of tech at times.
| Java, Kotlin, Scala
| Spring Boot, JUnit, Reselience4j, Feign
| MySQL/AuoraDB, DynamoDB, ELK, Kafka, Redis, TiDB
| Docker, Kubernetes, ArgoCD, AWS, GCP
| GitHub, IntelliJ, Gradle, Maven, npm/yarn, Flyway, Jenkins, snyk,
| Bigquery, Kibana, Spark
| PlantUML, draw.io, miro.com
| Slack, Zoom
Qualifications
• Experience in using Java 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.
• ビジネスレベルの日本語もしくは英語(英語スキルは必須ではありません)
Preferred Qualifications
• Experience with implementing platform components such as RESTful APIs, Pub/Sub Systems, Database Clients.
• Experience with AWS services.
• Experience in working for system development in finance, payment, or similar industries
• Experience in system design, development of web system which handles massive amount of transactions or requires scalability
• Language ability in Japanese and English is a plus (We have a professional translator but it is nice to have language skills)
• Experience in microservices
Portrait of a person
▼Six elements for the ideal candidates at PayPay

【Unparalleled speed】
Discover for yourself the important things that need to be done and implement ways to reach the best results at the fastest speed possible for the organization.

【Commitment】
As a professional, commit to the growth and business goals of the organization and create impactful results by your ownership.

【Logical thinking】
Think logically and structurally to bring real communication.

【Curiosity and questioning mind】
Keep your curiosity about new things and your challenges along with a continuous questioning mind and enjoy such circumstances in a future-oriented manner.

【Problem solving】
Take a proper approach towards both explicit and potential business/organization challenges to lead solutions involving others.

【True opinion and communication skill】
Communicate your opinions to others in a flat manner to ensure mutual understanding and to keep things moving forward.
Location
Minato-ku, Tokyo, JAPAN
(Basically we work fully remotely in Japan)
PayPay Careers
• Forms of employment: Permanent Staff
• Full-remote work (stay In Japan)
• Salary: Based on experience, skills, performance and contribution.
• Salary Increase: Reviewed based on performance evaluation and PayPay's business performance.
  NOTE: In principle, you will be reviewed for a raise once in a year.
• Special Incentive : Payment based on company performance and individual contribution and evaluation (once in a year)
• Various Allowances: Overtime allowance, late-night work allowance and Work from home allowance (100,000JPY/year)
• Working Hours: In principle, from 10:00am to 18:45pm (actual working hours: 7h45m+1 hour lunch break from 12pm to 13pm in principle) NOTE: We use super flextime system which do not set core hours.  
• 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, sick/injured child care leave, family care leave and etc.
• Benefits: Social insurance (health insurance, employee pension, employment insurance and compensation insurance,) defined contribution pension system (TBC) and etc.
Hiring Process
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 resume.
Please be prepared to take code challenge after submitting your application! It takes about 1-1.5 hours max. to complete.

3. Short Interview (30min)
You will have 1 to 3 interviews with our engineers and HR.

4. Loop Interview
4 interviews will be conducted within 1 - 2 days. We will review your knowledge, Data Structure and Algorithm, Programming and System Design

5. Offer