Backend Engineer

Position Overview

• Location Type: [Not Specified]
• Employment Type: [Not Specified]
• Salary: [Not Specified]

PayPay is a FinTech company with over 65 million users as of August 2024. They have a diverse team of members from over 50 countries. Their vision is "Unlimited," encouraging risk-taking and challenging themselves to create a future beyond imagination. They are seeking individuals who can embrace challenges, rapidly improve their product, and promote PayPay with professionalism and passion.

Company Information

PayPay is a FinTech company founded in 2018.

Job Description

PayPay is seeking a Backend Engineer to work on their payment system, delivering the best payment experience for their customers.

Main Responsibilities

• Design large-scale systems with high complexity to support high-throughput applications.
• Understand how to leverage infrastructure for solving large-scale problems.
• Develop tools and contribute to open source wherever possible.
• Adopt problem-solving as a way of life – always go to the root cause!
• Support the code you write in production.

Tech Stack

• Languages: Java, Kotlin, Scala
• Frameworks/Libraries: Spring Boot, JUnit, Resilience4j, Feign
• Databases: MySQL/AuroraDB, DynamoDB, TiDB
• Infrastructure: ELK, Kafka, Redis, Docker, Kubernetes, ArgoCD, AWS, GCP
• Tools: GitHub, IntelliJ, Gradle, Maven, npm/yarn, Flyway, Jenkins, snyk, Bigquery, Kibana, Spark, PlantUML, draw.io, miro.com
• Communication: Slack, Zoom

Qualifications

• 3+ years of experience in using Java under a professional environment, or excellent skills in generalized programming languages (Scala, Python, 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 3+ years equivalent experience in SaaS platform development.
• Business of English or Japanese.

Preferred Qualifications

• Experience with implementing platform components such as RESTful APIs, Pub/Sub Systems, and 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 systems that handle massive transactions or require scalability.
• Language ability in Japanese and English is a plus.