Software Development Engineer

Date PostedJune 9, 2026LocationChiba, Osaka, Tokyo, JapanCompanyLightyear Japan Co., Ltd.SalaryJPY 4000K - JPY 9000KTypeit (pc, web, unix) - project manager it (pc, web, unix) - business application se

Job Summary

The Software Development Engineer will handle requirements definition, design, implementation, and testing across diverse sectors like aerospace, automotive, and clean tech. Candidates will work on varied projects ranging from AWS-based web apps to generative AI integration. This role is open to foreign nationals and offers a stable environment with 126 annual holidays.

Responsibilities

  • Requirements definition and system design
  • Implementation, testing, and system release
  • Maintenance and operations support
  • Project management and team collaboration

Required Skills

  • Proficiency in Java, C#, C/C++, Python, or JS/TS
  • Minimum 1 year software development experience
  • Strong collaborative problem-solving skills
  • Japanese language proficiency (N3-N1 level)

Job Details

■ Responsibilities You will be responsible for requirements definition, basic design, detailed design, implementation, testing, release (system migration), and maintenance/operation in software development. The development process will vary depending on the work environment. ■ Industries you will be responsible for System development for various clients, mainly in the defense, aerospace, automotive, telecommunications, clean tech, and healthcare sectors. [Expected Projects] * Planning, requirements definition, design, and development of services deployed by telecommunications carriers * ADAS application evaluation and design review: evaluation review in simulation, generation of test cases for evaluation, environmental design, and evaluation execution * Software development for systems that realize clean energy and reduction of emissions of environmentally harmful substances * Development of redundant configurations for reservation management web applications (AWS) * PoC and environment construction, and function modification projects related to the use of generation AI [Employment Conditions] * Full-time employee (no fixed term) * Probationary Period: 3 months * Working Hours: 9:00 AM to 6:00 PM (8 hours work, 1 hour break) * Holidays: Complete two-day weekend (Sat/Sun), national holidays, summer and New Year holidays (126 annual holidays) * Benefits: Social insurance, corporate pension, commuting allowance, asset building savings, side job system, maternity/childcare/nursing care leave. [Required Conditions] * Approximately 1 year or more experience in software development using: Java, C#, C, C++, Python, Javascript/TypeScript (Vue.js, React, Node.js) * Experience working collaboratively to solve problems [Preferred Experience and Skills] * Industry domain knowledge (Automotive, Clean Tech, Healthcare, Manufacturing, Construction, Public Sector, Finance, etc.) * Experience developing RPA tools or low-code applications * Experience negotiating with clients in system development * Experience in instructing and guiding members and project management