API Test Engineer (Tokyo, Japan)

Tokyo
November 18, 2025
Full Time

Job Description

API Test Engineer (Tokyo, Japan)

ST.WIN TECHNOLOGY Co., Ltd.

Company: ★Featured Company★ ST.WIN TECHNOLOGY Co., Ltd.
Location: Nihonbashi Ningyocho, Chuo-ku, Tokyo, Japan
Employment Type: Full-Time

Job Overview

Responsible for API and system integration testing for third-party game platforms. Ensure accuracy and reliability of APIs, integration with front-end/back-end, and account functionalities.

Key Responsibilities:

  • Create test plans, test cases, and test reports based on product specifications
  • Conduct API testing using Postman, Swagger; confirm parameter accuracy and return values
  • Validate integration between front-end, back-end, and member accounts
  • Log bugs, report issues, and collaborate with developers/PM to resolve
  • Test account linkage, game logic, report validation, and system enhancements

Requirements

  • 1–3+ years of experience in software or API testing
  • Proficient in RESTful API testing and tools like Postman
  • Able to independently prepare test cases and document bugs
  • Detail-oriented, responsible, and good communication skills
  • Language: Chinese (fluent in reading tech docs and communication), English (read API docs)
  • English Proficiency: Basic Communication (TOEIC 225–470)
  • Japanese: Not required

Working Hours

  • Weekdays 10:00–19:00 (1-hour break, 8-hour workday)
  • Overtime may apply depending on project

Salary & Benefits

  • Salary: Based on experience and capability
  • Transportation allowance: Up to ¥20,000/month
  • Annual bonuses & salary raises
  • Duty, overtime, travel allowances (company policy)
  • Full social insurance (employment, health, pension, accident)
  • Visa support for qualified foreign professionals
  • Career growth & training programs (domestic/international)
  • Paid holidays: weekends, national holidays, year-end
  • Sick leave, special leaves (marriage, maternity, etc.)
  • Internal events (tea, snacks, outings, parties)
  • Comfortable office with kitchen & greenery

Nearest Station:

  • 2 min walk: Ningyocho Station (Tokyo Metro Hibiya Line / Toei Asakusa Line)

Location

Photos
ST.WIN TECHNOLOGY Co., Ltd. logo

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