Senior web developer (Japanese language not required)

Yudai Humanity Co., Ltd.

Job Overview

  • 採用企業タイプ 直接採用
  • 業種 インフォメーションテクノロジー
  • 英語レベル ビジネスレベル
  • 日本語レベル 特に必要無し
  • 国内の応募者に限定? 海外
  • ビザスポンサーシップ Yes



  • Frontend Experience
  • At least 4 years of focused JavaScript experience
  • Experience building complex, scalable web apps and APIs
  • Backend Experience
  • Strong Node.js experience
  • Confident in using backend infrastructure like MongoDB, Redis, Apache/Nginx, AWS, SQL technologies

General Skills and Best Practices

  • Advanced problem-solving and debugging skills: Deep experience in writing testable code
  • Adept at using profiling, logging, and browser tools for debugging
  • Adept at identifying and resolving feature edge cases
  • Well-versed in various types of web frameworks
  • Comfortable contributing to engineering-related infrastructure (CI/CD, Docker/Kubernetes, CM Tools)
  • Track record of high quality code review

It would be good if you have:

  • At least two years of React experience
  • Typescript experience
  • Previous team lead experience
  • Experience refactoring/migrating a large project
  • Experience making a real-time SPA (single page app) using websockets
  • Experience deploying, scaling cloud Infrastructure
  • Previous experience in implementing web security against XSS, query injections, CSRF, brute force attacks, etc.
  • Conversational Japanese language ability

And bonus points if you have:

  • Experimentation with deep learning, AI systems
  • SEO experience


Senior Web Developer

We are looking for a talented Senior Web Developer with strong work experience in Angular, React, and Express/Node.

  • Is a self-starter that thrives on interesting challenges
  • Puts the customer first, not the technology
  • Embraces Agile development methodologies
  • Is a data-driven decision maker
  • Knows how to communicate effectively with non-technical employees
  • Is a considerate team player

Salary: 6M~9M

Working time: 10am~7pm

Working place: Tokyo, Chyoda-ku.

🏥 Health insurance and pension
💹 Stock options with a Silicon Valley style vesting schedule
☕️ Free coffee and breakfast
Paid leave

Engineer Interview Process:

  • Initial phone screen
  • Interviews with engineers (which may include a coding interview)
  • Coding project (apparently this is mandatory for remote interviewers but optional interviewees already in Tokyo)

For Frontend developer positions, they normally require 4 years of Javascript experience and experience working on complex, scalable web apps. They use Javascript on the backend as well and so they require strong Node.js experience. They also value being able to write testable code and being able to work with various types of web frameworks and CI/CD systems.

イメージ ギャラリー



  • 合計求人数 18 Jobs
  • 住所 Japan, 東京都新宿区新宿2−10−6
  • 業種 人材紹介・派遣


私たち、株式会社雄大ヒューマニティーは、日本で言われてきた『三方よし』... Yudai Humanity Co., Ltd.


[email protected]