Trinity Do Co. Ltd

Trinity Do Co. Ltd (株式会社トリニティ・ドゥ) is a Japanese software development company headquartered in Sapporo, Hokkaido, with additional offices in Tokyo and Fukuoka. Its core business is contract (commissioned) software development: design, implementation, and testing across the full system development lifecycle. The company positions itself as an engineering-oriented development partner rather than a packaged-product vendor, taking on projects from clients in the electronics, semiconductor, education, payments, and public-sector domains. According to its official website, Trinity Do's track record spans both engineering and business systems. On the engineering side, it has worked on image simulator development in C++ and C# since January 2017, cashless payment system development in C++ and Python since April 2018, and wearable-sensor system development in C++, C#, and JavaScript since April 2021. On the business and public-sector side, it has developed a public assistance (livelihood protection) system in C# since October 2014, municipal infrastructure development and maintenance in Java since April 2016, and welfare system development in JavaScript and Python since April 2019. It has also developed internal systems for an educational institution, Hokkaido University, using Java and JavaScript. Its listed major clients as of March 31, 2023 include Sony Group Corporation, Sony Semiconductor Solutions Corporation, Hokkaido University (National University Corporation), QUADRAC Co., Ltd., Peacemind Technology Co., Ltd., Aines Co., Ltd., Seiko Solutions Inc., GVE Co., Ltd., and Kyocera Corporation. This client mix indicates a focus on long-term, recurring contract relationships, with several projects running continuously for years. The company operates from three locations: the Sapporo head office in KDX Sapporo Kitaguchi Building, Kita 7-jo Nishi 4-17-1, Kita-ku, Sapporo, Hokkaido; a Tokyo office in Marutomo Tokyo Building, 3-2-2 Iwamotocho, Chiyoda-ku, Tokyo; and a Fukuoka office in Yaesu Hakata Building 803, 2-18-30 Hakata Ekihigashi, Hakata-ku, Fukuoka. It recruits new graduates and publishes employee interviews on its website, suggesting an active graduate hiring program. Wikidata classifies Trinity Do as a videogame tools creator, which is consistent with its engineering-simulation and graphics-related contract work, though its official materials emphasize general commissioned software development rather than game products. The company is privately held; no parent company or stock listing is indicated in the available evidence.

Trinity Do Co. Ltd is a Japanese contract software development company headquartered in Sapporo, Hokkaido. The available evidence does not state a founding year, but its project record shows continuous operations from at least October 2014, when it began developing a public assistance (livelihood protection) system in C#. This project is listed on its official website as ongoing, indicating a long-term client relationship in the public-sector domain. In April 2016, the company began municipal infrastructure development and maintenance work in Java, again listed as ongoing. In January 2017, it started engineering-oriented image simulator development in C++ and C#, reflecting a move into graphics and simulation work. In April 2018, it added cashless payment system development in C++ and Python, aligning with the broader Japanese shift toward cashless payment infrastructure. In April 2019, it began welfare system development in JavaScript and Python, and in April 2021 it started wearable sensor system development in C++, C#, and JavaScript. The company has also developed internal systems for Hokkaido University using Java and JavaScript, indicating a relationship with the education sector. Its major clients as of March 31, 2023 include Sony Group Corporation, Sony Semiconductor Solutions Corporation, Hokkaido University, QUADRAC Co., Ltd., Peacemind Technology Co., Ltd., Aines Co., Ltd., Seiko Solutions Inc., GVE Co., Ltd., and Kyocera Corporation. These relationships span electronics, semiconductors, payments, and public-sector domains. Trinity Do operates from a Sapporo head office and additional offices in Tokyo and Fukuoka. It recruits new graduates and publishes employee interviews on its website, including interviews with employees who joined in 2019 and 2022. Wikidata classifies the company as a videogame tools creator, which is consistent with its engineering-simulation and graphics-related contract work, though its official materials emphasize general commissioned software development. The company is privately held, and no parent company or stock listing is indicated in the available evidence.

• Began developing a public assistance (livelihood protection) system in C# (ongoing as of the official website).

• Began municipal infrastructure development and maintenance in Java (ongoing).

• Began engineering-oriented image simulator development in C++ and C# (ongoing).

• Began cashless payment system development in C++ and Python (ongoing).

• Began welfare system development in JavaScript and Python (ongoing).

• Began wearable sensor system development in C++, C#, and JavaScript (ongoing).

• Major clients as of March 31, 2023 included Sony Group, Sony Semiconductor Solutions, Hokkaido University, QUADRAC, Peacemind Technology, Aines, Seiko Solutions, GVE, and Kyocera.

Engineering-oriented contract software development partner for electronics, semiconductor, education, payments, and public-sector clients, with long-running multi-year projects.

• Image simulator development

  Engineering-oriented image simulator development using C++ and C#, ongoing since January 2017.

• Cashless payment system development

  Cashless payment system development using C++ and Python, ongoing since April 2018.

• Wearable sensor system development

  Wearable sensor system development using C++, C#, and JavaScript, ongoing since April 2021.

• Public assistance system development

  Public assistance (livelihood protection) system development using C#, ongoing since October 2014.

• Municipal infrastructure development and maintenance

  Municipal infrastructure development and maintenance using Java, ongoing since April 2016.

• Welfare system development

  Welfare system development using JavaScript and Python, ongoing since April 2019.

• University internal system development

  Internal system development for Hokkaido University using Java and JavaScript.

1. 1株式会社トリニティ・ドゥ 公式サイトtrinity-do.co.jp
2. 2Trinity Do Co. Ltd - Wikidatawikidata.org