{"id":3469409,"url":"https://alion.io/job/bitstar-enjinia-ruby-on-rails","title":"【開発】エンジニア（Ruby on Rails）","company":{"id":1823897,"name":"BitStar","domain":"bitstar.tokyo","url":"https://alion.io/company/bitstar","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"HERP","truth_index":{"grade":"C","score":64,"open_postings":10,"ghost_share":0.6,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-11-01T06:10:25Z"}},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Tokyo, 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Database」を中心とした開発を行うエンジニアを募集しております。\n入社後は当社CTO山下（https://www.wantedly.com/id/y2y\n）の元で開発に携わっていただきます。\n主な業務内容\n・自社サービス「BitStar System / BitStar Database」のシステムの機能設計・開発・テスト\n・2TBを超えるデータ管理システムに関する議論・連携\n・新規機能のシステム・データベース・ネットワーク設計\n具体的な業務内容\n・アジャイルチームのエンジニアとして業務\n・Ruby on Railsを用いたAPI・Batchシステム設計・開発・テスト\n・AWS上で構築されたMySQL・OpenSearch・Redisなどを含むインフラ改善\nサービス紹介\nサービス開発を中心に、企画・設計・開発・運用まで裁量広くお任せします。\nBitStar DatabaseではYouTube 2,300億 TikTok 2,600億 Instagram 1,500億 X 60億 計約6,400億 フォロワーデータからAIや機械学習を用いてデータ提供をしています。\nBitStar採用ページ：https://bitstar.tokyo/corp/career/\nRequirements\nエンターテック（エンターテインメント×テクノロジー）企業のBitStarで、「クリエイターエコノミーを支えるサービス」を一緒に創りませんか？\nBitStarの基幹システム「BitStar System」と日本最大級のソーシャルデータベース「BitStar Database」を中心とした開発を行うエンジニアを募集しております。\n入社後は当社CTO山下（https://www.wantedly.com/id/y2y\n）の元で開発に携わっていただきます。\n主な業務内容\n・自社サービス「BitStar System / BitStar Database」のシステムの機能設計・開発・テスト\n・2TBを超えるデータ管理システムに関する議論・連携\n・新規機能のシステム・データベース・ネットワーク設計\n具体的な業務内容\n・アジャイルチームのエンジニアとして業務\n・Ruby on Railsを用いたAPI・Batchシステム設計・開発・テスト\n・AWS上で構築されたMySQL・OpenSearch・Redisなどを含むインフラ改善\nサービス紹介\nサービス開発を中心に、企画・設計・開発・運用まで裁量広くお任せします。\nBitStar DatabaseではYouTube 2,300億 TikTok 2,600億 Instagram 1,500億 X 60億 計約6,400億 フォロワーデータからAIや機械学習を用いてデータ提供をしています。\nBitStar採用ページ：https://bitstar.tokyo/corp/career/\nPreferred Experiences\n・Ruby on Rails（実務経験あり） Python\n・AI・機械学習を用いたサービス開発経験\n・企画・設計・開発もできるエンジニアを目指している方\n・スタートアップで圧倒的な成長をしたい方\n・将来起業を考えている方\nWe are looking for\n・学習意欲のある方\n・スタートアップで圧倒的な成長をしたい方\n・プログラミングロジックを構築できる素地をお持ちの方\nWorking Conditions\nSalary\n未経験者：336〜800万円\n月給28万円（45時間分の固定残業代 73,100円を含む）〜\n※45時間を超えた分は別途支給\n経験者：360万〜1000万 月給30万円（45時間分の固定残業代 78,300円を含む）〜 ※45時間を超えた分は別途支給\n※ご経験に応じて応相談\nLocation\n〒150-0002 東京都渋谷区渋谷2-22-3 渋谷東口ビル 10F\nJob Type\n正社員\nWork hours\n# 勤務時間\n9:30～18:30\n※フレックスタイム制を設けており、11:00~16:00がコアタイムとなります。（一部曜日によって変動あり）\n# 休日\n・完全週休2日制\n・年間休日120日以上\n・有給休暇\n・夏季休暇（特別休暇）\n・年末年始休暇\n・慶弔休暇\n・産前産後・育児休暇（取得・復帰実績あり）\n・子ども休暇（特別休暇）\nProbation period\nあり(3ヶ月）\nBenefits\n# 賞与\n業績に応じた決算賞与あり\n# 福利厚生\n・社会保険完備\n・書籍購入支援制度\n・部内懇親会費用補助\n・社内交流ランチ費用補助\n・部活動支援制度\n・住宅手当（条件あり）\n・リファラル制度\n・屋内指定たばこ専用喫煙室あり","description_format":"text","description_chars":2140,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Influencers","Influencer Marketing"],"lifecycle":[{"event":"open","at":"2026-10-29T16:34:53Z"}],"visa":[],"liveness":{"score":60,"band":"ok","label":"Likely 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