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Lead Full Stack Engineer | Java & React

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Onsite

Lead Full Stack Engineer | Java & React

Michael Page

Lead Full Stack Engineer | Java & React

Skills

Mobile DevelopmentReactNodeTypescriptJavaReact NativeSpring BootRedisGraphQLGitHubJavascript

2 months ago

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Important information


Contract type:

Temporary

Salary:

¥7,000,000 – ¥8,500,000 / year

Location:

Tokyo, Japan

Work mode:

Onsite

Published on:

7 September 2026

What they need


  • Lead architecture and development of large-scale customer platforms
  • Work across web and mobile technologies with strong autonomy

企業情報 Our client is a leading enterprise in the digital services and telecommunications sector, operating large-scale consumer platforms and investing heavily in modern technology solutions. The organization offers the opportunity to work on high-impact products within an international and innovation-driven environment.

職務内容

  • Lead the design, development, and maintenance of scalable web and mobile applications.
  • Develop customer-facing solutions using React.js, React Native, Spring Boot Java, and Redis.
  • Build reusable front-end components and shared libraries to accelerate future development.
  • Translate UI/UX designs and wireframes into high-quality, maintainable code.
  • Design robust system architectures, data structures, and database models.
  • Manage APIs, server-side integrations, and application environments.
  • Optimize applications for performance, security, scalability, and reliability.
  • Collaborate closely with Product Managers, Designers, and Engineering teams to deliver new product features.
  • Promote engineering best practices, code quality standards, and development efficiency.
  • Provide technical guidance and mentorship to other developers where required.

理想の人材

  • 7-10 years of professional software development experience.
  • Strong expertise in JavaScript and TypeScript.
  • Hands-on experience with React.js and its core principles.
  • Experience developing mobile applications using React Native.
  • Strong back-end development experience with Spring Boot Java and Redis.
  • Solid understanding of RESTful APIs and modern authentication/authorization mechanisms.
  • Experience with state management frameworks such as Redux or MobX.
  • Knowledge of JSON Web Token (JWT) and related security practices.
  • Experience using Git and modern software development workflows.
  • Strong analytical and problem-solving capabilities.
  • Bachelor's degree in Computer Science, Engineering, or a related discipline, or equivalent practical experience.

Preferred Qualifications

  • Experience with GraphQL.
  • Familiarity with Node.js or other server-side technologies.
  • Understanding of Agile development methodologies.
  • Contributions to open-source projects or an active GitHub portfolio.

条件・待遇

  • Long-term project engagement with business-critical systems.
  • Opportunity to influence architecture and technology decisions.
  • Exposure to large-scale, high-traffic digital platforms.
  • Collaborative international working environment.
  • Opportunity to work alongside experienced engineers on challenging, high-impact projects.

Contact: Serena Wu Quote job ref: JN-082026-7091355

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