Backend Engineer Comparison

Transcript

1. Please refrain from reproducing or copying the text, images or other content of this document without permission. Copyright (C) PayPay Card Corporation. All Rights Reserved. PayPay vs PayPay Card Comparing Backend Engineering Roles Choosing Your Next FinTech Challenge in Japan
2. 公開 2 Copyright (C) 2023 PayPay Card Corporation. All Rights Reserved. CONFIDENTIAL © PayPay Card Corporation 2 Introduction: PayPay and PayPay Card PayPay Register Users 69 million (as of May 2025) PayPay, a FinTech company that has surpassed 69 million users (as of May 2025) in seven years since it launched in 2018, is a payment platform used by more than one out of every two smartphone users in Japan (*1). PayPay Card Active Members 13 million (as of Dec 2024) PayPay Card changed its company name from YJ card in October 2021, to provide users with more accessible and convenient FinTech services that have not been possible with credit card services, by integrating with PayPay payment platform. In October 2022, it became a wholly owned subsidiary of PayPay Corporation. ※1 総務省統計局「人口推計－2020年（令和2年）8月報－」および総務省「令和2年通信利用動向調査」の「1.情報通信機器の保有状況」を基に、当社にて算出
3. 公開 3 Copyright (C) 2023 PayPay Card Corporation. All Rights Reserved. CONFIDENTIAL © PayPay Card Corporation 3 Introduction: Why This Comparison? Understanding Nuances Explore the distinct opportunities within two closely related, yet different, FinTech entities Strategic Career Choice Identify which role best aligns with your engineering aspirations and desired impact Exciting FinTech Landscape Both offer impactful contributions to Japan's rapidly evolving cashless society
4. 公開 4 Copyright (C) 2023 PayPay Card Corporation. All Rights Reserved. CONFIDENTIAL © PayPay Card Corporation 4 Direct Comparison: Key Differentiators Massive Scale & Continuous Expansion Primary Value Prop ・Optimizing performance for 69M+ users ・Evolving core infrastructure for future growth ・Adapting approaches across product lines ・Direct societal impact in Japan ・Broad FinTech ecosystem challenges ・Cultivating deep expertise across domains Pioneer & Build from Scratch ・Architecting next-gen services from scratch ・Driving seamless evolution via new features ・Shaping development rules and team culture ・Deep specialization in credit/core banking ・High ownership in building critical products ・Rapid delivery and tangible product impact Engineering Focus Ideal for engineers seeking broad influence and complex infrastructure challenges at hyper-scale Ideal for engineers passionate about greenfield development, deep domain expertise, and shaping new systems Impact & Specialization Role Type Alignment
5. 公開 5 Copyright (C) 2023 PayPay Card Corporation. All Rights Reserved. CONFIDENTIAL © PayPay Card Corporation 5 Backend Engineer Overview: PayPay Massive Scale & Continuous Expansion • Powering Japan's leading payment app, serving over 69 million users, integral to Japan's social infrastructure. • Optimizing performance and ensuring reliability as critical social infrastructure • Continuously evolving underlying infrastructure by strategically investing in both product enhancements and core technical advancements to support future growth • Our approach adapts across product lines and their unique features, offering the chance to cultivate deep expertise in distinct domains Core Engineering Challenge • Designing and supporting large-scale, high-throughput payment systems • Tackling complex architectural challenges with high reliability demands Key Responsibilities • System design for massive scale • Leveraging infrastructure for complex problem-solving • Developing internal tools and contributing to open source • Ensuring robust production support
6. 公開 6 Copyright (C) 2023 PayPay Card Corporation. All Rights Reserved. CONFIDENTIAL © PayPay Card Corporation 6 Backend Engineer Overview: PayPay Card Pioneer & Build from Scratch / Deep FinTech Specialization & High Impact • Revolutionizing credit services by integrating with the extensive PayPay platform • Architecting next-gen services: building the next iteration of services from scratch by integrating critical migrations directly into new feature development • Seamless evolution through creation: designing and building future-proof systems, with service transitions seamlessly driven by the development of innovative new features • Significant ownership: engineers have the chance to shape development rules and the team's culture in a new organization Core Engineering Challenge • Building and re-architecting existing services for superior scalability and maintainability • Innovating within the core banking system context Key Responsibilities • Designing, implementing, and delivering robust systems • Understanding infrastructure for problem-solving • Contributing through knowledge sharing and code reviews • Troubleshooting product issues