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Embedded Software Developer

Date PostedJune 9, 2026LocationShin-Yokohama, Yokohama City, Kanagawa PrefectureCompanyLightyear Japan Co., Ltd.Salary¥274,800 - ¥426,500Typeit (mainframe) - project manager it (mainframe) - application se

Job Summary

You will be responsible for the embedded control development of device driver and application layers for semiconductor manufacturing equipment controllers. The role involves refactoring software for new models and developing unique functions for various target markets. Candidates should possess strong skills in C/C++ or Windows application development.

Responsibilities

  • Embedded control development for device drivers
  • Application layer software development
  • Refactoring for new equipment models
  • Developing unique functions for target markets

Required Skills

  • Fluent Japanese (N1/N2)
  • C language or C# proficiency
  • Windows application development
  • RTOS and Embedded OS experience
  • UML modeling

Job Details

Responsibilities: - Responsible for the embedded control development of the device driver layer and application layer of software for the internal controller of semiconductor manufacturing equipment (laser equipment). - Perform refactoring for new models based on existing equipment. - Develop unique functions for multiple target markets. Working Conditions: - Working Hours: 9:00 AM - 5:30 PM (7.5 hours work / 60 minutes break). - Overtime: Approximately 17 hours/month. - Salary: Monthly salary ¥274,800 - ¥426,500 (Annual: 4.5 million to 7.5 million yen). - Bonuses: Twice a year (July and December), potential year-end bonus in September based on performance. - Annual Holidays: 129 days (Full two-day weekend system, Sundays, and public holidays). - Probationary period: 6 months. Job Requirements: - Japanese Level: Fluent (JLPT N1 or N2). - Required experience (at least one of the following): 1. Software development using C language. 2. At least one year of experience in developing Windows applications using Visual Studio. - Preferred experience (one or more of the following): 1. Software development using C#. 2. Experience with Git or Subversion (SVN). 3. Development for embedded Windows OS. 4. Development on RTOS. 5. Experience in creating design documents using modeling languages such as UML.