PayPay
Backend Engineer
You will design and build complex, large-scale systems for high-throughput payment applications. You will use infrastructure to solve scalability challenges, investigate root causes, support your code in production,…
Backend Engineer Core Banking and Product Features
Develop and operate Java and Kotlin backend applications for a core banking system renewal project, including architecture, infrastructure, performance, monitoring, and reliability work. The role includes secondment to…
Backend Engineer / バックエンドエンジニア (Core Banking System)
Develop and operate backend applications for a next-generation core banking system using C and Java. Design reliable, stable, and high-performing systems; select architecture and middleware; apply infrastructure to…
Cloud Platform Engineer
You will architect and build robust, scalable, stable, and cost-efficient AWS infrastructure for a cloud-based payment system. You will design infrastructure that supports maintenance, patching, upgrades, and regional…
Cloud Platform Engineer DB Specialist
Operate and improve database services for mission-critical systems by monitoring, configuring, upgrading, scaling, backing up, migrating, troubleshooting, documenting, and evaluating database tools. Responsibilities…
Customer Support Business Transformation Planning Specialist
Redesign merchant and user customer-support operations with AI assistance. Identify AI use cases from inquiry data and workflows, design AI-enabled processes and automation, define KPIs, measure results, and drive…
Data Engineer
You will design, build, and operate scalable data ingestion, processing, integration, governance, and lakehouse platforms. You will improve performance, cost efficiency, reliability, observability, and security while…
Frontend Engineer
You will build web features that change how people use and manage their finances and business. You will work with product managers, designers, and technical teams to implement features. You will share knowledge, review…
Full Stack QA Engineer
You will develop test scenarios and detailed test cases for functional and non-functional requirements across mobile, web, and API products. You will prepare test data, tools, and environments; execute automated and…
Principal Software Engineer
You will design, develop, test, deploy, maintain, and improve software and core platforms. You will lead the technical execution of multiple projects, provide architectural direction, solve complex technical issues,…
Product Designer
Design end-to-end user experiences for PayPay Bank consumer and corporate apps, web services, and mini-apps. Collaborate with product managers, engineers, and senior designers to develop features, create UX flows and…
Product Manager
You will work closely with engineers and product designers to develop new features and improve existing banking services with a user-first approach. You will translate business requirements into detailed product…
Senior Data Science Engineer / Senior Machine Learning Engineer (Applied Insights)
Own the end-to-end design, implementation, evaluation, and maintenance of production machine learning models for prediction, recommendation, and anti-fraud use cases. Lead architectural decisions, analyze and visualize…
Site Reliability Engineer (Bilingual SRE)
Improve the reliability, availability, scalability, resilience, and performance of production systems by developing monitoring and notification tooling, integrating telemetry and alerting platforms, investigating…
UX Writer
Work under the support of a Senior UX Writer and collaborate with engineers, product managers, and designers to create, edit, proofread, and propose clear Japanese UX copy for app and web-service interfaces, guide…
Cloud Infrastructure Engineer
About PayPay Securities PayPay is a FinTech company that has surpassed 69 million users (as of May 2025) in 6 years since its launch in 2018, is rapidly expanding its business scale as a payment platform used by…