• Full-time

Publication date: 2026.11.04

[Recruitment agency/Tokyo] IT/App Engineer

  • System Engineers / Infrastructure Engineers / Web Engineers / Game Developers
  • Tokyo
  • Salary: JPY 5,000,000 - 9,000,000
【紹介会社/東京】IT/アプリエンジニア
職種Position System Engineers / Infrastructure Engineers / Web Engineers / Game Developers
会社概要Company profile As a "digital creator production company," we aim to establish the social standing of engineers through solving our clients' challenges and through our own products, as a group of true professionals.
 Our company is not simply a staffing company for engineers. Through our Digital Talent Business, Contract Development Business, and Content Property Business, we create work opportunities and career opportunities for engineers, both inside and outside the company.

 Many talented engineers gather at our company, and by clustering our talent, we maintain stable business with more than 300 companies at all times, including major companies such as the Bandai Namco Group, the Recruit Group, and the Rakuten Group.

 Since our listing in 2014, along with the increase in the number of employees, we have steadily achieved growth in our business performance, and in the near future we aim to list on the Tokyo Stock Exchange Prime Market. Going forward, by participating in even better clients and projects, we can enhance the track record of our engineers.
仕事内容Job description The work you will be asked to take on is application engineering, covering the development, operation and maintenance, and release of Android and iOS apps.
・Development, operation and maintenance, and release of iOS apps
・Development, operation and maintenance, and release of Android apps
・Planning, design, prototyping, and development of newly added features
・Proposals for improving UIUX
・System design and development of new apps
・Improving app speed and error and crash rates, etc.
Our company maintains stable business relationships with a wide range of companies, including industry-leading top companies such as CTC, SCSK, Sky, 帝人, アクセンチュア and シャノン, across both IT and web fields.
As members of our production company, our employees take part in projects for each client company and can acquire a wide variety of skills and know-how that cannot be gained by staying at one company for many years!
応募資格Requirement ■12 months of development with Swift, Kotlin, Andoroid Java, and Flutter
■6 months of experience in native app development, operation, and release
日本語力Japanese level Business
雇用形態Employment type Full-time
勤務エリアLocation Tokyo
勤務時間Working hours 9:30-18:30 / 10:00-19:00
想定年収Salary JPY 5,000,000 - 9,000,000
条件・待遇Condition [https://www.e-xtreme.co.jp/career/environment/benefits/](https://www.e-xtreme.co.jp/career/environment/benefits/)

[Age]
58 years old or under
[Salary]
Monthly salary: 333,000 yen ~ 600,000 yen
Annual salary: 5,000,000 yen ~ 9,000,000 yen
*Includes fixed overtime pay
[Employment type]
Full-time employee or contract employee
*Determined at the time of job offer according to the individual's preference and career history
Previous employment, experience, and abilities are favorably considered, and will be determined according to company regulations.
For full-time employees, after joining (salary revision once a year), performance will be fairly evaluated and determined according to company regulations.
[Working hours]
In the case of Extreme Head Office: 9:30 ~ 18:30 (break time 12:30 ~ 13:30, actual working hours 8 hours)
*May differ depending on the assigned project (e.g., 10:00 ~ 19:00, break time 1h, etc.)
[Number of hires]
Approximately 10 people
Estimated annual salary: 5,000,000 yen ~ 9,000,000 yen
*Employment type: Full-time employee or contract employee (determined at the time of job offer according to the individual's preference and career history)
Employment type: Full-time employee
[Work location]
"Tokyo and its surrounding areas"
Head office in Ikebukuro, or assigned project (client) sites in Tokyo and surrounding regions
*If the client has a remote work system, we may ask you to work remotely.
選考についてProcess Entry
↓
Document Screening
Screening will be conducted based on the entry information you submitted, your résumé, and your work history.
※For designers, the portfolio is also included.
↓
Interview (1–2 rounds)
Candidates who pass the document screening will be interviewed by our interviewers, either in person or via WEB.
↓
Offer (conditions notice will be sent)
For those who accept, we will arrange a session to explain the onboarding process.
※Required documents and other materials will be provided at the onboarding explanation session.
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