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Builds and operates scalable data pipelines and platforms for a fast-growing fintech company, using modern tools like Databricks, Spark, and AWS to support banking services and fraud detection.
Designs, builds, and secures AWS-based cloud infrastructure for a fast-growing fintech platform, automating deployments and ensuring high availability for payment and banking systems.
Own the end-to-end product lifecycle for banking operations at PayPay Bank, redesigning processes like account opening and KYC to improve efficiency, compliance, and user experience.
Lead the development of financial products at a fast-growing Japanese fintech company, collaborating with engineers and designers to build and improve banking features for 70M+ users.
Build and maintain the core banking backend in C and Java, designing high-performance, reliable microservices for a rapidly growing fintech platform with 70M+ users.
Designs and maintains AWS-based cloud infrastructure for PayPay’s payment systems, ensuring scalability, security, and cost efficiency while automating deployments for developers.
PayPayについて/About PayPay 2018年にサービスを開始してから約8年でユーザー数7500万人を突破したフィンテック企業であるPayPayは約50の国と地域から集まった多様なメンバーで構成されています。 AIを含む最新技術とデータを駆使し、圧倒的なスピードでサービス開発と事業成長を実現します。…
Senior Data Science Engineer or Senior Machine Learning Engineer at PayPay builds and deploys ML models for fraud detection, recommendations, and insights, using Python, SQL, and cloud tools in a hybrid Tokyo office.
Leads financial planning and analysis for PayPay’s fintech growth, building budgets, forecasts, and management reports while driving profitability and strategic initiatives in a hybrid role.
Creates clear, user-friendly Japanese microcopy and communications for PayPay’s fintech apps and web tools, collaborating with designers and engineers to improve UX.
About PayPay PayPay is a FinTech company that has grown to over 75M (as of August 2026) users since its launch in 2018. Our team is hugely diverse with members from over 50 different countries.…
Designs and maintains highly available, scalable microservices on Kubernetes and AWS to ensure flawless FinTech service for 70M+ users, using observability tools and incident response.
Senior Product Manager at PayPay drives high-impact fintech product strategy, monetization, and execution for 70M+ users, collaborating with cross-functional teams in a hybrid Japan-based role.
Designs banking experiences for PayPay Bank’s 10M+ users, leading UX/UI for apps, web, and mini-apps while collaborating with product managers and engineers to ship features and improve user journeys.
Design end-to-end UX/UI for PayPay’s fintech apps, focusing on payments and money-management features while collaborating with engineers and product managers.
Designs banking apps and services for PayPay Bank, focusing on user experience across mobile, web, and mini-apps using Figma and Adobe tools.
Principal Software Engineer at PayPay designing and scaling high-performance distributed systems for a 75M+ user fintech platform using Java/Kotlin/Scala, Kubernetes, and AWS/GCP.
Designs and executes automated and manual tests for PayPay’s fintech apps and APIs, using tools like Appium, Playwright, and AI assistants to ensure quality and reliability of banking and payment systems.
Build and maintain web frontend features for Japan’s leading payments app using TypeScript, Vue.js/React, and modern DevOps tooling.
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