Qiita Inc. (headquartered in Nakamura-ku, Nagoya City; CEO: Kensuke Shibata), a group company of Ateam Holdings Corporation—a corporation that develops diverse IT services through creativity and technical expertise—operates 'Qiita,' a service dedicated to recording and sharing engineering-related knowledge. Today, it announces the launch of 'Qiita Advent Calendar 2026' on Japan’s largest engineering community platform, 'Qiita,' starting October 30, 2026 (Fri). Concurrently, the company has begun accepting sponsor applications. *Note: 'Largest-scale' is expressed based on comparisons between IT Human Resources White Paper (2020 edition) and the company’s registered member count and unique user (UU) numbers within the market of online communities for engineers. Sponsor inquiry form here About 'Qiita Advent Calendar' 'Qiita Advent Calendar' is an annual limited-time article contribution event held on Qiita from December 1st to 25th, inspired by the tradition of 'Advent Calendars' used to count down the days until Christmas. First launched in 2011, this marks the 16th edition. The defining feature of 'Qiita Advent Calendar' is its focus exclusively on engineering-related information, making it a major event that brings together Qiita and the Christmas season like never before. 'Qiita Advent Calendar 2026' Schedule Official site launch: October 30, 2026 (Fri) Article contribution event: December 1, 2026 (Tue) – December 25, 2026 (Fri) Award winners announcement event: January 22, 2027 (Fri) *tentative Sponsor Benefits *partial list Creation of a gift calendar Promotional activities within Qiita Sponsor logo placement / CM broadcasting during live streams Exclusive session during live streaming Year-round display of community sponsor logo Hosting post-event gatherings featuring calendar participants, etc. Benefits of Sponsorship Gather neutral, engineer-created content Articles for sponsor calendars are contributed by Qiita users. This allows sponsors to collect authentic