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Backend Engineer / バックエンドエンジニア (Core Banking System)

PayPay

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861 open backend roles across 275 companies are on ApplySarthi right now, most of them in Bengaluru (92), Delhi NCR (24), Pune (14).

What backend roles keep asking for: AWS (46%), System design (43%), Python (41%), Kubernetes (36%), Java (35%), Observability (30%), PostgreSQL (24%), GCP (22%) — counted across their open postings here.

Remote Backend Engineer jobs · AWS jobs · Java jobs · Microservices jobs · REST APIs jobs

PayPay has 82 open roles listed here.

Counted across 14 company job boards, updated as roles open and close.

Preparing for this interview

Interviews for backend roles keep coming back to AWS, System design, Python, Kubernetes. Practise those questions before you sit with PayPay.

Questions you are likely to be asked

  1. Why do you want to join PayPay?
  2. What is your experience with Java? Tell me one thing you learned the hard way.
  3. How would you design an API for a feature you have worked on?
  4. What do you do when a production issue happens on your code?
  5. Walk me through a system you built. How was it designed, and what would you change now?

Prep Sarthi gives you a free mock interview: an AI interviewer asks you questions like these out loud, from your own CV and this job, and shows your score and your weakest answer.

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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.

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.
※ Please note that you cannot apply or be selected in parallel with PayPay Corporation, PayPay Card Corporation and PayPay Securities Corporation.

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か国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。

OUR VISION IS UNLIMITED_

我々は自分たちの想像を超える未来を創るためにあえて明確なビジョンは必要ないと考えています。常にDay1であるスタンスを忘れずに、誰もが想像できないようなビジョン(未来)を実現していくのがPayPayです。
この壮大なビジョンに前向きに取り組み、他社に真似できない圧倒的なスピードでプロダクトを磨き上げ、日本のキャッシュレス決済、またそれを使用した金融ライフプラットフォームとしての普及を一気に推進することにプロフェッショナルとして情熱を持って取り組み、自ら課題発見し、周囲と協力して新しい価値創出を共に推進する仲間を募集します。

※ PayPay株式会社へご応募いただく際にはPayPayカード株式会社、PayPay証券株式会社へ併願応募はご遠慮いただいております。ご了承ください。

 

▼関連コンテンツ

【PayPayが仕掛ける金融革命】米国ナスダック上場は通過点/デジタル金融プラットフォームに進化/決済・投資・貯蓄・保険などすべてPayPay/内製でシステム開発する理由/グローバル標準の金融サービス

 
 

Job Description

About the Organization/Team・組織/チームについて

PayPay Bank is responsible for developing the financial infrastructure that supports the financial services of the PayPay Group.
Our team is driven by our in-house engineers, from the design and development of the core system to its operation.

Our role is not just to develop functions, but to:

Because it is a new organization, you can proactively participate in technology selection and the creation of development culture.

※ After joining the company, you are expected to be seconded to PayPay Bank as a member of the above project.

PayPay銀行は、PayPayグループの金融サービスを支える金融基盤の開発を担っています。
私たちのチームは、コアシステムの設計・開発から運用までを自社エンジニアが主体となって推進しています。

単に機能を開発するだけではなく、

までが私たちの役割です。

新しい組織だからこそ、技術選定や開発文化づくりにも主体的に関わることができます。

【Engineering for New Bank Project】Recruiting Factbook

※入社後に上記プロジェクトメンバーとしてPayPay銀行への出向を予定しています。

 

Background of Recruitment・募集の背景

At the PayPay Group, we are accelerating the evolution of financial services across payments, banking, cards, and securities.

The banking system that forms the foundation for this requires more than ever:

To continue meeting these technical demands, we are broadly recruiting not only engineers with experience in financial system development but also backend engineers with experience in large-scale web services and platform development.


PayPayグループでは、決済・銀行・カード・証券を横断した金融サービスの進化を加速しています。

その基盤となる銀行システムには、これまで以上に

が求められています。

こうした技術的な要求に応え続けるため、金融システム開発の経験を持つエンジニアだけでなく、大規模Webサービスやプラットフォーム開発の経験を持つバックエンドエンジニアも広く募集しています。

 

Job Responsibilities・具体的な業務内容

Design of highly reliable financial infrastructure

Design with a view of the entire system

Continuous improvement


高信頼な金融基盤の設計

システム全体を見据えた設計

継続的な改善

 

Attractiveness of This Position・本ポジションの魅力

[Tech Challenges]
In this position, you will face technical challenges unique to financial systems.

Opportunity to be involved in the modernization of financial infrastructure
While maintaining the reliability of the financial system cultivated over many years, we will advance architecture improvements and feature expansions.

Mission-critical system development
Because it is a financial system where downtime is not permitted, you can experience design and implementation that consider high availability, performance, and fault tolerance.

Ability to design the entire system
You will be involved in the design of not only implementation but also:

Scale unique to the PayPay Group
You will be involved in system development that supports the financial services of the entire PayPay Group, not just the bank itself.

【Tech Challenges】
このポジションでは、金融システムならではの技術課題に向き合います。

金融基盤のモダナイゼーションに携われる
長年培われた金融システムの信頼性を維持しながら、アーキテクチャの改善や機能拡張を進めます。

ミッションクリティカルなシステム開発
停止が許されない金融システムだからこそ、高可用性・性能・耐障害性を考慮した設計・実装を経験できます。

システム全体を設計できる
実装だけでなく、

まで含めた設計に携われます。

PayPayグループならではのスケール
銀行単体ではなく、PayPayグループ全体の金融サービスを支えるシステム開発に携われます。

 

Project Examples・プロジェクト事例

 

Required Experience/Skills・必要な経験/スキル

 

Desired Experience/Skills・あると望ましい経験/スキル

 

Desired Candidate Profile・求める人物像

PayPay 5 senses

 

Related position in PayPay Group

 

Working Conditions 

Employment Status

Office Location

Work Hours

Holidays

Paid leave

Salary

Benefits

 

待遇・条件

雇用形態

勤務地

勤務時間

休日

休暇(法定休暇および会社福利厚生)

給与

ベネフィット


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Listed on greenhouse · posted 2025-07-11. ApplySarthi collects openings and links to application pages; the role is advertised by PayPay, not by us.