{"id":35254,"state":"published","closed_at":0,"company_name":"bengo4.com","company":{"id":9223,"name":"弁護士ドットコム株式会社","user_name":"bengo4.com","company_name":"bengo4.com","number_of_employee":441,"number_of_developer":90,"icon_url":"https://d3bpwnzencusk5.cloudfront.net/uploads/company/icon/9223/2fdbe7f05d9b6b333b26616c6ac0fc9d.png","avatar_url":"https://d3bpwnzencusk5.cloudfront.net/uploads/company/icon/9223/2fdbe7f05d9b6b333b26616c6ac0fc9d.png","thumbnail_url":"https://d3bpwnzencusk5.cloudfront.net/uploads/company/icon/9223/2fdbe7f05d9b6b333b26616c6ac0fc9d.png","article":{"id":1446,"title":"まだないやり方で、世界を前へ。","body":"\u003e ■ VISION\n\n**まだないやり方で、世界を前へ。\nDrive a paradigm shift for the better world.**\n\n\u003e ■ MISSION\n\n**｢プロフェッショナル・テック｣で、次の常識をつくる。\nBe the Professional-Tech Company.\nプロフェッショナルだからできること。専⾨知とテクノロジーで、社会に貢献する。**\n\n弁護士ドットコム株式会社は、人々と専門家をつなぐポータルサイト「[弁護士ドットコム](https://www.bengo4.com/)」「[税理士ドットコム](https://www.zeiri4.com/)」「[ビジネスロイヤーズ](https://www.businesslawyers.jp/)」、\n契約マネジメントプラットフォーム「[クラウドサイン](https://www.cloudsign.jp/)」、リーガル特化型AIエージェント「[Legal Brain エージェント](https://legalbrain.com/)」を提供する、リーガルテック（Legal × Technology）のリーディングカンパニーです。\n\n弁護士ドットコムのミッション・ビジョン、運営サービス、組織、働く環境等は[こちら](https://www.bengo4.com/corporate/careers/)でご紹介しています！\n","sort_order":1}},"team_gender_composition":{"id":26536,"number_of_male":null,"number_of_female":null,"number_of_other":null},"service_and_product":"## 募集背景\r\n2026年1月に発足した当部署では、「Legal Brain エージェント」や「クラウドサイン」など、複数のプロダクトでAI活用を急加速させています。\r\nAI/MLの価値は、モデルを作って終わりではなく、いかに高い精度を維持したまま安定して動かし続け、継続的に改善できるかにかかっています。特にLLM活用の普及に伴い、評価手法の複雑化やデータの鮮度管理が極めて重要な課題となっています。\r\n\r\nプロダクトの現場に寄り添い、MLライフサイクル（開発・評価・デプロイ・モニタリング）の自動化・高度化を通じて、具体的なビジネス成果を最大化させるバックエンドエンジニアを募集します。\r\n\r\n\r\n# 仕事内容\r\n***\r\n## 職務詳細\r\n* プロダクトへのMLライフサイクル実装\r\n　-各プロダクトチームと連携し、AI/ML機能のデプロイパイプラインおよび推論インフラの設計・構築\r\n　-現場のニーズに合わせた、LLMアプリケーション（RAG等）の継続的改善を支える仕組みの実装\r\n* 高度な評価・モニタリング基盤の開発\r\n　-複雑化するAI出力に対する評価パイプライン（LLM-as-a-judge等）の自動化\r\n　-RAGや検索機能の精度評価を継続的に行うためのパイプライン構築\r\n　-推論精度、レイテンシ、コスト、およびデータドリフトの監視・可視化体制の構築\r\n* 全社共通のAI基盤コンポーネントの提供\r\n　-プロダクト横断で利用可能なLLMオーケストレーションや、検索基盤の運用\r\n　-開発環境の標準化を通じた、機械学習エンジニアおよびプロダクト開発者のリードタイム短縮\r\n* SRE・インフラチームとの連携\r\n　-全社インフラ方針に基づいた、セキュアかつスケーラブルなAI/MLシステム・検索システムの構築\r\n　-コスト最適化やパフォーマンスチューニングの実行\r\n\r\n## 本ポジションの魅力\r\n* 自分が構築したシステムが、クラウドサインのような大規模プロダクトの安定稼働と、Legal Brain エージェントのような先端機能の高速改善を直接支えている実感を得られます。\r\n* 従来の機械学習領域に加え、LLM特有の評価の難しさや、データの流れ（RAGのインデックス更新など）をいかに自動化するかという、答えの定まっていない領域に挑戦できます。\r\n* 個別のプロダクトで起きた問題を基盤へと昇華させ、全社の開発スピードを数倍に引き上げるという、組織的インパクトの大きい仕事ができます。\r\n\r\n***\r\n\r\n# 応募資格\r\n-------------------------------------------------\r\n## 必須要件\r\n* パブリッククラウド（AWS/GCP/Azure）を用いたインフラやサービスの構築・運用経験\r\n* 機械学習システムのライフサイクル（学習・評価・推論）に対する基礎知識\r\n* CI/CDツール（GitHub Actions, CircleCI等）を用いた開発プロセスの自動化経験\r\n* Docker / Kubernetes 等のコンテナ技術の実務経験\r\n* Python または Go 等を用いたソフトウェア開発経験\r\n\r\n## 歓迎要件\r\n* データ基盤、ML基盤等の開発・運用経験\r\n* LLMアプリケーションの運用、および評価パイプラインの構築経験\r\n* Terraform / CloudFormation 等の IaC によるインフラ管理経験\r\n* サービスKPI監視や分散トレーシング（Datadog, OpenTelemetry等）の導入経験\r\n* 大規模トラフィックに耐えうるマイクロサービスの設計・運用経験\r\n\r\n## こんな方と働きたい\r\n* 現場の痛みに対する想像力がある方\r\n　-プロダクトチームが何に困っているかを察知し、技術で解決することを楽しめる方。\r\n* 「自動化」への執着心がある方\r\n　-手作業によるミスや遅延を嫌い、徹底的に仕組み化を進めたい方。\r\n* 越境するマインドセットを持つ方\r\n　-インフラの知識を持ちつつ、機械学習エンジニアのドメイン（モデル評価やデータ処理）にも深く関心を持ち、チームを繋ぐ役割を担える方。\r\n\r\n-------------------------------------------------\r\n# 給与詳細\r\n＜年収＞10,034,004円 〜 18,051,000円 \r\n＜月額＞836,167（217,600）円～1,504,250（391,300）円\r\n\r\n・基本給（ライフプラン給基準額（※①）を含む）：月額から（ ）内の裁量労働手当（※②）を除いた額\r\n・時間外労働が月45時間を超えた場合は残業手当を別途支給\r\n※①確定拠出年金の拠出金等、社員の資産形成を目的に支給する手当\r\n※②基本給を算定基礎とした月45時間分の残業相当額","required_experience_and_skills":null,"preferred_experience_and_skills":null,"desired_personality":null,"message_for_candidates":"","working_condition":"【労働制区分】\r\n専門業務型裁量労働制（1日のみなし労働時間10時間）\r\n\r\n【勤務時間】\r\n標準的な勤務時間帯：10:00～19:00\r\n時間外労働有無：有\r\n休憩時間：60分\r\n\r\n【休日休暇】\r\n土日祝祭日／夏期休暇（取得年度の6月末在籍で3日、7月末在籍で2日、8月末在籍で1日付与）／年末年始休暇／慶弔休暇／特別休暇／妊婦特別休暇／産前産後休暇／育児休暇／介護休暇 短時間勤務（育児・介護）\r\n","insurance":"【社会保険】\r\n厚生年金／健康保険／雇用保険／労災保険　※法令通り適用します。\r\n\r\n【待遇・福利厚生】\r\n社内表彰制度／企業型DC制度／従業員持株会／部活動補助制度／書籍購入補助制度／住宅手当／自転車通勤制度／定例懇親会／ビアバッシュ／シャッフルランチ制度／リゾートサポート制度\r\n\r\n【試用期間】\r\n入社後3ヶ月\r\n\r\n【労働契約期間】\r\n期間の定めなし","primary_base_salary":{"id":149553,"unit":"year","min_value":1003,"max_value":1805},"technology":{"practical_skilltags":{"言語":[{"id":2909,"name":"golang","created_at":"2013-05-01T10:30:48+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":3748,"popular":false,"real_name":"","skilltag_category_id":1},{"id":66,"name":"python","created_at":"2012-02-21T15:22:14+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":true,"formal_id":66,"popular":true,"real_name":"Python","skilltag_category_id":1}],"プロジェクト管理":[{"id":1504,"name":"gitlab","created_at":"2012-06-05T10:38:16+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":1504,"popular":false,"real_name":"","skilltag_category_id":4},{"id":725,"name":"jira","created_at":"2012-04-05T15:22:20+09:00","updated_at":"2026-04-14T17:39:02+09:00","has_image":true,"formal_id":725,"popular":false,"real_name":"","skilltag_category_id":4},{"id":186,"name":"github","created_at":"2012-02-21T15:22:15+09:00","updated_at":"2026-04-14T17:39:02+09:00","has_image":true,"formal_id":186,"popular":true,"real_name":"","skilltag_category_id":4}],"情報共有ツール":[{"id":4405,"name":"esa","created_at":"2015-10-13T10:46:24+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":4405,"popular":false,"real_name":"","skilltag_category_id":7},{"id":3807,"name":"slack","created_at":"2014-07-30T01:01:13+09:00","updated_at":"2026-04-14T17:39:02+09:00","has_image":false,"formal_id":3807,"popular":false,"real_name":"","skilltag_category_id":7}],"その他":[{"id":4380,"name":"aurora","created_at":"2015-09-14T15:31:23+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":4380,"popular":false,"real_name":null,"skilltag_category_id":5},{"id":7753,"name":"github-copilot","created_at":"2023-03-31T17:22:15+09:00","updated_at":"2026-04-14T11:08:34+09:00","has_image":false,"formal_id":7753,"popular":false,"real_name":null,"skilltag_category_id":5},{"id":8975,"name":"notebooklm","created_at":"2025-07-28T17:02:02+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":8975,"popular":false,"real_name":null,"skilltag_category_id":5},{"id":8739,"name":"cursor","created_at":"2024-11-15T14:22:15+09:00","updated_at":"2026-04-14T11:08:34+09:00","has_image":false,"formal_id":8739,"popular":false,"real_name":null,"skilltag_category_id":5},{"id":8835,"name":"devin","created_at":"2025-02-27T19:41:01+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":8835,"popular":false,"real_name":null,"skilltag_category_id":5},{"id":5988,"name":"github-actions","created_at":"2020-01-09T11:45:51+09:00","updated_at":"2026-04-14T11:58:24+09:00","has_image":false,"formal_id":5988,"popular":false,"real_name":"GitHub Actions","skilltag_category_id":5},{"id":3197,"name":"tableau","created_at":"2013-09-05T11:15:01+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":3197,"popular":false,"real_name":"","skilltag_category_id":5},{"id":8933,"name":"bedrock","created_at":"2025-06-16T20:04:22+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":8933,"popular":false,"real_name":null,"skilltag_category_id":5},{"id":5293,"name":"sagemaker","created_at":"2018-06-21T11:48:06+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":5293,"popular":false,"real_name":null,"skilltag_category_id":5},{"id":6912,"name":"opensearch","created_at":"2021-11-30T15:39:10+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":6912,"popular":false,"real_name":null,"skilltag_category_id":5},{"id":7133,"name":"neptune","created_at":"2022-04-27T16:03:59+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":7133,"popular":false,"real_name":null,"skilltag_category_id":5},{"id":4278,"name":"scikit-learn","created_at":"2015-09-09T12:14:04+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":4278,"popular":false,"real_name":null,"skilltag_category_id":5},{"id":5946,"name":"aws-elb","created_at":"2019-11-11T19:48:33+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":5946,"popular":false,"real_name":null,"skilltag_category_id":5},{"id":4431,"name":"aws-sqs","created_at":"2015-11-06T01:29:29+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":4431,"popular":false,"real_name":null,"skilltag_category_id":5},{"id":5945,"name":"aws-sns","created_at":"2019-11-11T19:48:16+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":5945,"popular":false,"real_name":null,"skilltag_category_id":5},{"id":5745,"name":"aws-ses","created_at":"2019-01-18T15:16:46+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":5745,"popular":false,"real_name":null,"skilltag_category_id":5},{"id":5944,"name":"aws-redis","created_at":"2019-11-11T19:47:50+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":5944,"popular":false,"real_name":null,"skilltag_category_id":5},{"id":3436,"name":"aws-s3","created_at":"2014-01-03T01:04:44+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":3436,"popular":false,"real_name":null,"skilltag_category_id":5},{"id":4467,"name":"aws-lambda","created_at":"2015-11-20T18:29:04+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":4467,"popular":false,"real_name":null,"skilltag_category_id":5},{"id":8919,"name":"langfuse","created_at":"2025-06-02T15:36:11+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":8919,"popular":false,"real_name":null,"skilltag_category_id":5},{"id":8821,"name":"langgraph","created_at":"2025-02-06T12:15:04+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":8821,"popular":false,"real_name":null,"skilltag_category_id":5},{"id":8424,"name":"langchain","created_at":"2024-04-04T12:32:14+09:00","updated_at":"2026-04-14T11:07:09+09:00","has_image":false,"formal_id":8424,"popular":false,"real_name":null,"skilltag_category_id":5}]},"not_practical_skilltags":{}},"login_for_visitor":{"class_for_ga":"ga-track-with-more-read-for-skills"},"job_environment_categories":[{"id":3,"name":"テストの実施度","environments":[{"id":13,"name":"機能の実装と同時にテストコードを記述している"}]},{"id":6,"name":"オープンな情報共有","environments":[{"id":25,"name":"KPI などチームの目標・実績値について、メンバーの誰もがいつでも閲覧可能になっている"}]},{"id":7,"name":"労働環境の自由度","environments":[{"id":30,"name":"フレックスタイム制または裁量労働制を採用している"}]},{"id":8,"name":"メンバーの多様性","environments":[{"id":32,"name":"外国籍の開発メンバーがいる"},{"id":34,"name":"開発メンバーの新卒採用を実施している"}]},{"id":9,"name":"待遇・福利厚生","environments":[{"id":40,"name":"ストックオプションまたは自社株購入支援制度がある"}]},{"id":18,"name":"職業安定法に対応する記載事項","environments":[{"id":91,"name":"【裁量労働制を適応している】"},{"id":98,"name":"裁量労働制のみなし労働時間：1日10時間"},{"id":47,"name":"受動喫煙防止措置：屋内禁煙（屋内に喫煙可能室設置）"}]}],"title":"バックエンドエンジニア(AI/ML基盤) - リーガル×AI プロダクト横断でのデータ活用を実現するAI/ML共通基盤の開発を推進","updated_at":1776132429,"published_at":1776132429,"skilltags":[{"id":66,"name":"python","translated_name":"Python"},{"id":2909,"name":"golang","translated_name":"Golang"},{"id":725,"name":"jira","translated_name":"Jira"},{"id":186,"name":"github","translated_name":"Github"},{"id":1504,"name":"gitlab","translated_name":"Gitlab"},{"id":3807,"name":"slack","translated_name":"Slack"},{"id":4405,"name":"esa","translated_name":"Esa"},{"id":3197,"name":"tableau","translated_name":"Tableau"},{"id":4278,"name":"scikit-learn","translated_name":"Scikit Learn"},{"id":8424,"name":"langchain","translated_name":"Langchain"},{"id":8821,"name":"langgraph","translated_name":"Langgraph"},{"id":8919,"name":"langfuse","translated_name":"Langfuse"},{"id":4467,"name":"aws-lambda","translated_name":"Aws Lambda"},{"id":3436,"name":"aws-s3","translated_name":"Aws S3"},{"id":5944,"name":"aws-redis","translated_name":"Aws Redis"},{"id":5745,"name":"aws-ses","translated_name":"Aws Ses"},{"id":5945,"name":"aws-sns","translated_name":"Aws Sns"},{"id":4431,"name":"aws-sqs","translated_name":"Aws Sqs"},{"id":5946,"name":"aws-elb","translated_name":"Aws Elb"},{"id":4380,"name":"aurora","translated_name":"Aurora"},{"id":7133,"name":"neptune","translated_name":"Neptune"},{"id":6912,"name":"opensearch","translated_name":"Opensearch"},{"id":5293,"name":"sagemaker","translated_name":"Sagemaker"},{"id":8933,"name":"bedrock","translated_name":"Bedrock"},{"id":5988,"name":"github-actions","translated_name":"GitHub Actions"},{"id":8835,"name":"devin","translated_name":"Devin"},{"id":8739,"name":"cursor","translated_name":"Cursor"},{"id":8975,"name":"notebooklm","translated_name":"Notebooklm"},{"id":7753,"name":"github-copilot","translated_name":"Github Copilot"}],"profession":{"name":"バックエンドエンジニア","slug":"server-side-engineer"},"image_url":"https://d3bpwnzencusk5.cloudfront.net/uploads/job/35254/job_image/thumb_caf06f1e951b936936cdb4ca11568ce1.jpg","image_alt":"バックエンドエンジニア(AI/ML基盤) - リーガル×AI プロダクト横断でのデータ活用を実現するAI/ML共通基盤の開発を推進 | 弁護士ドットコム株式会社","profession_change_scope":"会社のすべての業務","employment_types":["正社員"],"base_salaries":[{"unit":"year","min_value":1003,"max_value":1805}],"prefecture_name":"東京","office_change_scope":"本社、すべての支社（テレワークを行う場所を含む）","selections":[{"slug":"over-5m-yen","name":"下限年収500万円以上"},{"slug":"over-10m-yen","name":"上限年収1000万円以上"}],"job_tags":[{"id":7,"name":"B2Cのサービスを運営","created_at":"2015-10-29T13:57:06+09:00","updated_at":"2018-03-10T12:13:40+09:00","priority":9,"slug":"has-b2c-services","available":true},{"id":9,"name":"椅子が定価6万円以上","created_at":"2015-10-29T13:57:06+09:00","updated_at":"2019-04-15T16:41:34+09:00","priority":1,"slug":"rich-chair","available":true},{"id":19,"name":"自社サービスを開発","created_at":"2016-06-07T16:17:57+09:00","updated_at":"2016-06-07T16:17:57+09:00","priority":9,"slug":"has-owned-services","available":true},{"id":24,"name":"フルリモート可","created_at":"2019-04-15T16:18:11+09:00","updated_at":"2019-07-22T12:25:18+09:00","priority":11,"slug":"full-time-remote-work-is-available","available":true},{"id":29,"name":"オンラインで選考が受けられる","created_at":"2020-04-06T20:44:08+09:00","updated_at":"2020-06-25T18:49:41+09:00","priority":10,"slug":"online-interview","available":true}],"images":[{"width":1600,"height":1067,"src":"https://d3bpwnzencusk5.cloudfront.net/uploads/job/35254/job_image/caf06f1e951b936936cdb4ca11568ce1.jpg","thumbnail":"https://d3bpwnzencusk5.cloudfront.net/uploads/job/35254/job_image/thumb_caf06f1e951b936936cdb4ca11568ce1.jpg","title":null},{"width":1600,"height":1067,"src":"https://d3bpwnzencusk5.cloudfront.net/uploads/job/35254/job_image/6ededa2bba00264272d8c3d8bfdff692.jpg","thumbnail":"https://d3bpwnzencusk5.cloudfront.net/uploads/job/35254/job_image/thumb_6ededa2bba00264272d8c3d8bfdff692.jpg","title":null},{"width":1600,"height":1067,"src":"https://d3bpwnzencusk5.cloudfront.net/uploads/job/35254/job_image/739031ccc3ece185613de659a014bc6f.jpg","thumbnail":"https://d3bpwnzencusk5.cloudfront.net/uploads/job/35254/job_image/thumb_739031ccc3ece185613de659a014bc6f.jpg","title":null}]}