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Updated 2025-07-08
Activated 2025-07-08

Java Backend Engineer
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Company Name

★Featured Company★ST.WIN TECHNOLOGY Co., Ltd.

Job Type IT (PC, Web, Unix) - Web Application SE
IT (PC, Web, Unix) - Game Development Engineer
IT (PC, Web, Unix) - Programmer
Industry Software Vendor
Location Asia Japan Tokyo Chuo

Job Description ■Work with project managers to complete the implementation of third-party game integration and related business requirements.
■Design and develop data processing logic, back-end integration services, and system architecture based on product requirements.
■Create and maintain integration API modules to improve the stability and performance of third-party game connections.
■Assist with game connection testing, and verify and debug processes such as login, deposits and withdrawals, result returns, and matching.
■Analyze and optimize existing system modules, and help build a high-availability and high-scalability service architecture.
■Create technical documentation and assist in providing technical support and knowledge transfer to other team members.
Company Info ST.WIN TECHNOLOGY Co., Ltd. has an excellent development team, which is the most important core of talent for the company and the source of product quality. Our logo is a combination of the shape of the initial letter "C" of St.Win and the image of a person, expressing St.Win's corporate philosophy of "human-centered".

St.Win Technology is an information technology research and development center with investment from overseas companies, and has been successful overseas in recent years. In 2016, the excellent development team took on a new form, using our core technology to provide customers with the planning, construction and development of high-transaction network trading platforms, supporting the development of their core trading business, and winning high praise and trust from many customers.

We attach great importance to the growth of each employee, and through an open and flexible management style and delegation of authority management, we provide an environment where employees with high self-management capabilities can freely demonstrate their abilities and grow. As our business expands, we are expanding our team in regions such as Taiwan and the Philippines, and welcome the participation of talented people who have a desire for challenges, international thinking, and a penchant for teamwork and innovative ideas.
Working Hours Monday to Friday 10:00 to 19:00 (60 minute break, 8 hours of actual work)
*Overtime may occur depending on the project situation.
Job
Requirements		 [Requirements]
■3+ years of Java system development experience, familiar with Java 8/11/21.
■Familiar with Spring Framework/Spring Boot, and experience in microservice development is preferred.
■Familiar with JPA/MyBatis/JUnit/RESTful API.
■Familiar with RDBMS, experience in Oracle 11g/12c or other database development and optimization.
■Familiar with SQL writing and performance tuning of database queries.
■System architecture design ability and modular thinking.
■Experience with API integration and third-party integration, able to quickly understand documentation and implement interface processes.
■Language skills
Chinese: Ability to listen, read, and write. Ability to read technical documents fluently and communicate in business situations.
English: Ability to read English API documentation. Ability to communicate with others in simple English.
English Level Minimum Communication Level (TOEIC 225-470)
Japanese Level None
Chinese Level Business Conversation Level
Salary JPY - Japanese Yen JPY 6000K - JPY 10000K   
Other Salary
Description		 ■Full social insurance (employment, industrial accident, health, welfare pension)
■Support for applying for a work visa (for talented overseas talent)
■Training system
■Annual salary increase, bonus
■Full transportation allowance (up to 20,000 yen per month)
■Job allowance, overtime allowance, business trip allowance, etc. (provided according to company regulations)
■Career development support system: Domestic and international training system, qualification acquisition support system, professional growth opportunities throughout the year.
■Irregular company events (e.g. Christmas, year-end party, afternoon tea, outdoor excursions, etc.)
■Irregular afternoon tea, snack corner, free coffee and drinks
■Irregular team building
Holidays Two-day weekend: Saturday, Sunday, and public holidays.
Year-end and New Year holidays
Annual paid leave
Sick leave
Special leave:
Maternity leave
Childcare leave
Celebration and condolence leave
Menstrual leave
Medical check-up leave
Job Contract
Period		 full-time employee
Nearest Station ★New Office★ 3-11-7, Nihonbashi Ningyocho, Chuo-ku, Tokyo THE CORNER Nihonbashi Ningyocho 4F The new office is equipped with a kitchen and a large meeting room. The natural environment makes it a very pleasant working environment. Tokyo Metro Hibiya Line, Toei Asakusa Line "Ningyocho Station": About 2 minutes on foot from Exit A5 Tokyo Metro Hanzomon Line "Suitengumae Station": About 7 minutes on foot Toei Shinjuku Line "Bakuroyokoyama Station": About 7 minutes on foot Toei Shinjuku Line "Hamacho Station": About 8 minutes on foot Tokyo Metro Hibiya Line "Kodenmacho Station": About 8 minutes on foot
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