⭐【Go】自社プロダクトWebアプリケーション開発及びApp開発業務案件⭐

In-house product web and app development (Go)

Source description · Japanese

こんにちは！クラウドワークステック事務局です。今回は、【Go】自社プロダクトWebアプリケーション開発及びApp開発業務案件のお仕事をご紹介します。 https://tech.crowdworks.jp/job_offers/95394?ref=pf_request_scout_95394_direct&tracking=pf_request_scout_95394_direct&utm_source=crowdworks&utm_medium=pf_request_scout ■この案件のポイント ✅毎月の稼働時間：160時間程度（以降、双方合意のもと継続更新予定） ✅報酬：800,000円～1,000,000円を想定しています　※ご相談可能 ✅契約形態：業務委託（準委任） ■期待するミッション【内容】新しい福利厚生をデザインするプラットフォーム【プロジェクト概要】福利厚生SaaS管理画面の権限細分化プロジェクト・既存システムに細粒度な権限管理機能を追加・管理者権限を機能別に分割（制度作成、従業員管理、設定変更等） ■具体的な業務内容【期間】随時～（7月or8月～）【場所】新宿駅基本リモート（キャッチアップ期間週2出社尚可、地方可）【技術スタック】 ●フロントエンド：TypeScript(React, React Native) 、Expo ■求めるご経験・スキル・Webアプリケーション開発（バックエンド）の実務経験 5年以上・データベース設計の経験少しでもご経験・ご希望に合いそうでしたら、まずは案件ページより詳細をご確認ください。 ▼本募集の詳細・応募はこちら（簡単1分） https://tech.crowdworks.jp/job_offers/95394?ref=pf_request_scout_95394_direct&tracking=pf_request_scout_95394_direct&utm_source=crowdworks&utm_medium=pf_request_scout ※本案件へのご質問・ご応募は、クラウドワークステックの案件ページよりお願いいたします。 ※人気案件の場合はすぐに募集が終了する恐れがあります。 ※すでに募集が終了している際には、案件の詳細ページではなく、登録用ページが表示されます。 ※システムの都合上、クラウドワークス内のメッセージ返信や応募機能を使ったご相談にはお答えできかねます。 ---------------- ▼案件応募までの3STEP（簡単1分） STEP1. 下記URLから応募します https://tech.crowdworks.jp/job_offers/95394?ref=pf_request_scout_95394_direct&tracking=pf_request_scout_95394_direct&utm_source=crowdworks&utm_medium=pf_request_scout STEP2.【職務経歴書】を登録します（マイページ＞プロフィール設定＞職務経歴書・ポートフォリオ） → これだけで選考通過率が大幅UP！ STEP3.担当者からの連絡を待ちます ---------------- 上記に限らず、常時600～700件以上の案件がございますので、本案件に限らず、ご興味がある方はぜひご応募をお待ちしております！・ご契約は株式会社クラウドワークスからの業務委託（準委任）契約となります。・本案件は受託企業さまへのお仕事の紹介はできません。あくまで個人のフリーランスとして活動されている方を対象にした案件となります。

Deferred analysis

Development of an in-house benefits SaaS product, focused on adding fine-grained permission management to the admin screen (web and app). Stack is Go backend plus TypeScript/React/React Native/Expo. Mostly remote from Shinjuku with optional 2 days onsite per week; about 160 hours monthly. Requires 5+ years of backend web development experience.

Japan residency: Unknown
Japanese language: Required
Japanese company: Not required
Human days: 16 – 22
AI hours: 35
AI input / output: 87500 / 28000 tokens
Version / date: offline-v1 / 2026-10-31T06:58:45.295026+00:00

Evidence, confidence & provider

{"provider": "atmorouter", "model": "atmo/deepseek-v4.1-flash", "confidence": 0.65, "evidence": {"title_en": "【Go】自社プロダクトWebアプリケーション開発及びApp開発業務案件", "summary_en": "福利厚生SaaS管理画面の権限細分化プロジェクト", "japanese_language_required": "Webアプリケーション開発（バックエンド）の実務経験 5年以上", "japanese_company_required": "あくまで個人のフリーランスとして活動されている方を対象にした案件となります", "human_effort_min_days": "Go web/app development for a benefits SaaS, specifically granular permission management (制度作成, 従業員管理, 設定変更), 160h/month, 新宿 onsite during ramp-up only. First month estimated; the existing system's permission model still needs mapping.", "ai_effort_hours": "Go web/app development for a benefits SaaS, specifically granular permission management (制度作成, 従業員管理, 設定変更), 160h/month, 新宿 onsite during ramp-up only. First month estimated; the existing system's permission model still needs mapping.", "human_effort_max_days": "Go web/app development for a benefits SaaS, specifically granular permission management (制度作成, 従業員管理, 設定変更), 160h/month, 新宿 onsite during ramp-up only. First month estimated; the existing system's permission model still needs mapping.", "ai_input_tokens": "AI支援実行35時間 × 入力2,500トークン/時 の想定（実測ではない）", "ai_output_tokens": "AI支援実行35時間 × 出力800トークン/時 の想定（実測ではない）"}}

Analysis assumptions

{"usage_kind": "estimated", "settings_version": 3, "settings_snapshot": {"version": 3, "model_label": "Sol 6.1 High", "input_usd_per_million": 2.0, "output_usd_per_million": 20.0, "usd_jpy": 157.881601, "human_day_hours": 8.0, "model_hourly_usd": null, "human_hourly_jpy": null, "human_day_jpy": null, "effective_at": "2026-10-30T18:05:00+07:00", "source": "Operator-specified (Commander): 2.00 USD input / 20.00 USD output per 1M tokens for Sol 6.1 High, described as the cheapest AtmoRouter pricing. FX USD/JPY 157.881601 from open.er-api.com (2026-10-30T00:02:31Z).", "approved": 1}, "formula_version": "ai-only-v1", "financial_bounds": {"revenue_min_jpy": 500000.0, "revenue_max_jpy": 1000000.0, "profit_min_usd": 3166.2, "profit_max_usd": 6333.13, "profit_min_jpy": 499883.96, "profit_max_jpy": 999883.96}}

Previous validated analyses (3, latest 20)

2026-10-31T06:58:45.295026+00:00

{"source_job_id": "13412207", "title_en": "In-house product web and app development (Go)", "summary_en": "Development of an in-house benefits SaaS product, focused on adding fine-grained permission management to the admin screen (web and app). Stack is Go backend plus TypeScript/React/React Native/Expo. Mostly remote from Shinjuku with optional 2 days onsite per week; about 160 hours monthly. Requires 5+ years of backend web development experience.", "japan_resident_required": null, "japanese_language_required": 1, "japanese_company_required": 0, "human_effort_min_days": 16.0, "human_effort_max_days": 22.0, "ai_effort_hours": 35.0, "ai_input_tokens": null, "ai_output_tokens": null, "ai_cost_usd": null, "estimated_revenue_jpy": 500000.0, "profit_jpy": null, "profit_usd": null, "assumptions_json": "{\"settings_version\": 3, \"settings_snapshot\": {\"version\": 3, \"model_label\": \"Sol 6.1 High\", \"input_usd_per_million\": 2.0, \"output_usd_per_million\": 20.0, \"usd_jpy\": 157.881601, \"human_day_hours\": 8.0, \"model_hourly_usd\": null, \"human_hourly_jpy\": null, \"human_day_jpy\": null, \"effective_at\": \"2026-10-30T18:05:00+07:00\", \"source\": \"Operator-specified (Commander): 2.00 USD input / 20.00 USD output per 1M tokens for Sol 6.1 High, described as the cheapest AtmoRouter pricing. FX USD/JPY 157.881601 from open.er-api.com (2026-10-30T00:02:31Z).\", \"approved\": 1}, \"formula_version\": \"ai-only-v1\", \"financial_bounds\": {\"revenue_min_jpy\": 500000.0, \"revenue_max_jpy\": 1000000.0, \"profit_min_usd\": null, \"profit_max_usd\": null, \"profit_min_jpy\": null, \"profit_max_jpy\": null}}", "provenance_json": "{\"provider\": \"atmorouter\", \"model\": \"atmo/deepseek-v4.1-flash\", \"confidence\": 0.65, \"evidence\": {\"title_en\": \"【Go】自社プロダクトWebアプリケーション開発及びApp開発業務案件\", \"summary_en\": \"福利厚生SaaS管理画面の権限細分化プロジェクト\", \"japanese_language_required\": \"Webアプリケーション開発（バックエンド）の実務経験 5年以上\", \"japanese_company_required\": \"あくまで個人のフリーランスとして活動されている方を対象にした案件となります\", \"human_effort_min_days\": \"Go web/app development for a benefits SaaS, specifically granular permission management (制度作成, 従業員管理, 設定変更), 160h/month, 新宿 onsite during ramp-up only. First month estimated; the existing system's permission model still needs mapping.\", \"ai_effort_hours\": \"Go web/app development for a benefits SaaS, specifically granular permission management (制度作成, 従業員管理, 設定変更), 160h/month, 新宿 onsite during ramp-up only. First month estimated; the existing system's permission model still needs mapping.\", \"human_effort_max_days\": \"Go web/app development for a benefits SaaS, specifically granular permission management (制度作成, 従業員管理, 設定変更), 160h/month, 新宿 onsite during ramp-up only. First month estimated; the existing system's permission model still needs mapping.\"}}", "source_hash": "dcecf0677f37eabe023f4a8e6d06b0a672b5c1afe132adf782638d5cfd69ce9d", "analyzed_at": "2026-10-31T06:46:12.831885+00:00", "analysis_version": "offline-v1"}

2026-10-31T06:46:12.831885+00:00

{"source_job_id": "13412207", "title_en": null, "summary_en": null, "japan_resident_required": null, "japanese_language_required": null, "japanese_company_required": null, "human_effort_min_days": 16.0, "human_effort_max_days": 22.0, "ai_effort_hours": 35.0, "ai_input_tokens": null, "ai_output_tokens": null, "ai_cost_usd": null, "estimated_revenue_jpy": 500000.0, "profit_jpy": null, "profit_usd": null, "assumptions_json": "{\"settings_version\": 3, \"settings_snapshot\": {\"version\": 3, \"model_label\": \"Sol 6.1 High\", \"input_usd_per_million\": 2.0, \"output_usd_per_million\": 20.0, \"usd_jpy\": 157.881601, \"human_day_hours\": 8.0, \"model_hourly_usd\": null, \"human_hourly_jpy\": null, \"human_day_jpy\": null, \"effective_at\": \"2026-10-30T18:05:00+07:00\", \"source\": \"Operator-specified (Commander): 2.00 USD input / 20.00 USD output per 1M tokens for Sol 6.1 High, described as the cheapest AtmoRouter pricing. FX USD/JPY 157.881601 from open.er-api.com (2026-10-30T00:02:31Z).\", \"approved\": 1}, \"formula_version\": \"ai-only-v1\", \"financial_bounds\": {\"revenue_min_jpy\": 500000.0, \"revenue_max_jpy\": 1000000.0, \"profit_min_usd\": null, \"profit_max_usd\": null, \"profit_min_jpy\": null, \"profit_max_jpy\": null}}", "provenance_json": "{\"provider\": \"manual\", \"model\": \"effort-recovery-import\", \"confidence\": 0.5, \"evidence\": {\"human_effort_min_days\": \"Go web/app development for a benefits SaaS, specifically granular permission management (制度作成, 従業員管理, 設定変更), 160h/month, 新宿 onsite during ramp-up only. First month estimated; the existing system's permission model still needs mapping.\", \"human_effort_max_days\": \"Go web/app development for a benefits SaaS, specifically granular permission management (制度作成, 従業員管理, 設定変更), 160h/month, 新宿 onsite during ramp-up only. First month estimated; the existing system's permission model still needs mapping.\", \"ai_effort_hours\": \"Go web/app development for a benefits SaaS, specifically granular permission management (制度作成, 従業員管理, 設定変更), 160h/month, 新宿 onsite during ramp-up only. First month estimated; the existing system's permission model still needs mapping.\"}}", "source_hash": "dcecf0677f37eabe023f4a8e6d06b0a672b5c1afe132adf782638d5cfd69ce9d", "analyzed_at": "2026-10-31T04:49:03.492212+00:00", "analysis_version": "offline-v1"}

2026-10-31T04:49:03.492212+00:00

{"source_job_id": "13412207", "title_en": null, "summary_en": null, "japan_resident_required": null, "japanese_language_required": null, "japanese_company_required": null, "human_effort_min_days": null, "human_effort_max_days": null, "ai_effort_hours": null, "ai_input_tokens": null, "ai_output_tokens": null, "ai_cost_usd": null, "estimated_revenue_jpy": 500000.0, "profit_jpy": null, "profit_usd": null, "assumptions_json": "{\"settings_version\": 3, \"settings_snapshot\": {\"version\": 3, \"model_label\": \"Sol 6.1 High\", \"input_usd_per_million\": 2.0, \"output_usd_per_million\": 20.0, \"usd_jpy\": 157.881601, \"human_day_hours\": 8.0, \"model_hourly_usd\": null, \"human_hourly_jpy\": null, \"human_day_jpy\": null, \"effective_at\": \"2026-10-30T18:05:00+07:00\", \"source\": \"Operator-specified (Commander): 2.00 USD input / 20.00 USD output per 1M tokens for Sol 6.1 High, described as the cheapest AtmoRouter pricing. FX USD/JPY 157.881601 from open.er-api.com (2026-10-30T00:02:31Z).\", \"approved\": 1}, \"formula_version\": \"ai-only-v1\", \"financial_bounds\": {\"revenue_min_jpy\": 500000.0, \"revenue_max_jpy\": 1000000.0, \"profit_min_usd\": null, \"profit_max_usd\": null, \"profit_min_jpy\": null, \"profit_max_jpy\": null}}", "provenance_json": "{\"provider\": \"manual\", \"model\": \"beam-free\", \"confidence\": 0.5, \"evidence\": {}}", "source_hash": "dcecf0677f37eabe023f4a8e6d06b0a672b5c1afe132adf782638d5cfd69ce9d", "analyzed_at": "2026-10-31T03:54:56.856343+00:00", "analysis_version": "offline-v1"}