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Backend Engineer

PayPay株式会社

テック　記載なし　企業サイト　掲載 7/2

給与

記載なし※ 募集要項に金額の記載がありません

勤務地
記載なし
雇用形態
正社員
働き方
ハイブリッド勤務

在宅勤務あり

年間休日
記載なし

要約求人票をもとにAIがまとめたものです

Design and develop backend systems for PayPay’s payment system to deliver the best payment experience for customers. The role includes designing large-scale systems, leveraging infrastructure, developing tools, and supporting code in production. Engineers are expected to use AI/LLM-based tools in daily development workflows.

応募資格

必須

  • 4+ years of experience in using Java under professional environment, or if you are non-Java user, excellent skills in generalized programming languages, such as Scala, Python, and Go.
  • Interest and ability to learn other coding languages as needed.
  • Experience with NoSQL databases and distributed cache.
  • Strong fundamentals in data structures, algorithms and object-oriented programming.
  • In-depth understanding of concurrency and distributed computing.
  • Degree in Computer Engineering or Computer Science or 5+ years equivalent experience in SaaS platform development.
  • Business level of English or Japanese.
  • Hands-on experience with AI/LLM tools (e.g., ChatGPT, GitHub Copilot, Gemini, CodeWhisperer, or similar) in professional software development.

歓迎

  • Experience with implementing platform components such as RESTful APIs, Pub/Sub Systems, Database clients.
  • Experience with AWS services.
  • Experience in working for system development in finance, payment, or similar industries.
  • Experience in system design, development of web systems which handle massive amount of transactions or require scalability.
  • Language ability in Japanese and English is a plus (we have a professional translator but it is nice to have language skills).
  • Experience in microservices.
  • Proven track record of integrating AI-assisted development into system design and delivery.
  • Contributions to AI-related open-source projects or automation of workflows with AI is a plus.

使用ツール

JavaKotlinScalaSpring BootJUnitResilience4jFeignMySQLAuoraDBDynamoDBELKKafkaRedisTiDBDockerKubernetesArgoCDAWSGCPGitHubIntelliJGradleMavennpm/yarnFlywayJenkinssnykBigqueryKibanaSparkPlantUMLdraw.iomiro.comSlackZoom

募集要項最終確認 10/2

職種
バックエンドエンジニア
雇用形態
Full Time
給与
記載なし
給与の詳細
Annual salary paid in 12 installments (monthly)Based on skills, experience, and abilitiesReviewed once a yearLate overtime allowance※Payroll payment can be changed to digital salary payment “PayPay Paycheck” for an amount set by you
手当
Late overtime allowance
勤務地
記載なし
働き方
Hybrid Workstyle※ You will be expected to work in the office, in alignment with organizational guidelines and team objectives.
勤務時間
Super Flex Time (No Core Time)In principle, 9:00am-5:45pm + 1h break (actual working hours: 7h45m + 1h break)
休日・休暇
Every Sat/Sun/National holidays (In Japan)/New Year's break/Company-designated Special daysAnnual leave (up to 14 days in the first year, granted proportionally according to the month of employment. Can be used from the date of hire)Personal leave (5 days each year, granted proportionally according to the month of employment）＊PayPay's own special paid leave system, which can be used to attend to illnesses, injuries, hospital visits, etc., of the employee, family members, pets, etc.
福利厚生
401KTranslation/Interpretation supportVISA sponsor + Relocation support
社会保険
Social Insurance (health insurance, employee pension, employment insurance and compensation insurance)
経験年数
4年以上
掲載日
2026/07/02 21:29（92日前）
最終確認
2026/10/02 13:31（今日）

仕事内容

Job Description

  • PayPay is looking for a Backend Engineer to work on our payment system to deliver the best payment experience for our customers.

AI-First Culture at PayPay

  • At PayPay, we believe that the future of software development is AI-augmented. Every engineer is expected to actively leverage AI tools for code reviews, testing, documentation, debugging, and productivity. AI is not optional — it is a mandatory part of our daily engineering workflow. Candidates must demonstrate both experience and mindset in utilizing AI effectively to deliver high-quality systems faster and better.

Main 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.
  • Leverage AI/LLM-based tools for code development, reviews, testing, and documentation in daily workflows.

Tech Stack

  • We select the best combination of tech at times.
  • | Java, Kotlin, Scala
  • | Spring Boot, JUnit, Resilience4j, Feign
  • | MySQL/AuoraDB, DynamoDB, ELK, Kafka, Redis, TiDB
  • | Docker, Kubernetes, ArgoCD, AWS, GCP
  • | GitHub, IntelliJ, Gradle, Maven, npm/yarn, Flyway, Jenkins, snyk,
  • | Bigquery, Kibana, Spark
  • | PlantUML, draw.io, miro.com
  • | Slack, Zoom

この求人はPayPay株式会社の採用ページの掲載内容をもとに構成しています。応募条件の最新情報は募集元をご確認ください。

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