Backend Engineer at PayPay

PayPay is seeking a Backend Engineer to enhance its payment system and provide optimal payment experiences for its vast user base. This role involves designing complex, large-scale systems that support high-throughput applications. The engineer will leverage infrastructure to tackle large-scale challenges, contribute to open source projects, and adopt problem-solving methodologies to identify root causes.

The Backend Engineer will work with a tech stack including Java, Kotlin, and Scala; Spring Boot, JUnit, Reselience4j, and Feign; MySQL/AuroraDB, DynamoDB, ELK, Kafka, Redis, and TiDB; Docker, Kubernetes, ArgoCD, AWS, and GCP; GitHub, IntelliJ, Gradle, Maven, npm/yarn, Flyway, and Jenkins; Bigquery, Kibana and Spark.

Responsibilities:

• Design large-scale systems with high complexity.
• Leverage infrastructure for solving large-scale problems.
• Develop tools and contribute to open source.
• Adopt problem solving as a way of life.
• Support the code written in production.

Requirements:

• 3+ years of experience in Java or proficiency in languages like Scala, Python, or Go.
• Interest and ability to learn other coding languages.
• Experience with NoSQL databases and distributed cache.
• Strong foundations in data structures, algorithms, and object-oriented programming.
• Understanding of concurrency and distributed computing.
• Degree in Computer Engineering or Computer Science or equivalent experience in SaaS.
• Business level English or Japanese.

PayPay offers:

• Remote work opportunity within Japan.
• Super Flex Time (no core time).
• Comprehensive social insurance.
• 401K.
• Translation/Interpretation support.
• VISA and relocation support.