Jobs and Careers

Senior Backend Engineer

UKRemotefull_timeVerifiedPosted 16 Jul 2024

About the role

About PayPay

PayPay is a FinTech company that has grown to over 64M (as of June 2024) users since its launch in 2018. Our team is hugely diverse with members from over 50 different countries.

OUR VISION IS UNLIMITED_

We dare to believe that we do not need a clear vision to create a future beyond our imagination. PayPay will always stay true to our roots and realize a vision (future) that no one else can imagine by constantly taking risks and challenging ourselves. With this mindset, you will be presented with new and exciting opportunities on a daily basis and have the opportunity to grow and reach new dimensions that you could never have imagined. We are looking for people who can embrace this challenge, refresh the product at breakneck speed and promote PayPay with professionalism and passion.

(Ratio of Mid-career hires: 100% in 2020/2021/2022)

Job Description

PayPay is looking for a Senior Backend engineer to work on our P2P and Chat systems to deliver the best experience for our customers.

Responsibilities:

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.
Collaborate with front-end developers and external team members to integrate user-facing elements with server-side logic
Participate in code reviews to maintain high quality code standards and ensure security/data protection measures
Support team members by providing technical guidance and design directions
Constantly identify performance improvements and optimize the application for maximum speed and scalability
Collaborate with product managers ands other stakeholders to gather requirements and deliver features on time

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:

Excellent skills in Java, or any other generalized programming language, such as Scala, Python, or Go.
Interest and ability to learn other coding languages as needed.
Experience with SQL and NoSQL databases, along with distributed cache.
Strong fundamentals in data structures, algorithms and object oriented programming.
In-depth understanding of concurrency and distributed computing.
Experience implementing platform components such as RESTful APIs, Pub/Sub Systems, and Database Clients.
Experience with microservices.
Experience designing high traffic systems.
Degree in Computer Engineering or Computer Science or 5+ years equivalent experience in SaaS platform development.
Business of English or Japanese

Preferred Qualifications:

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