（株）内藤一水社

What （株）内藤一水社 does

株式会社内藤一水社 (Naito Issuisha Co., Ltd.) is a privately held Japanese recruitment advertising and human resources introduction firm founded in 1930 and headquartered in Chiyoda-ku, Tokyo. The company provides B2B recruitment support services to companies and HR departments, operating four regional offices (Tokyo, Osaka, Nagoya, Fukuoka) that collectively cover all of Japan. Its service portfolio is organized around four core lines: Owned Media Recruiting (proprietary ATS-based recruitment site creation paired with paid job search engine advertising on Indeed, 求人ボックス, and スタンバイ), Job Media (direct placement across 400+ domestic web, print, and direct sourcing outlets), Specialized Recruitment (industry-specific job boards for building maintenance, electrical certification, construction management, and patent/IP professionals), and HR Introduction (contingency-fee placement services).

The company monetizes primarily through transaction fees on job advertising placements (entry-level pricing from ¥30,000, premium Indeed from ¥120,000), success-based fees on placements and HR introduction (no fee until successful hire), and professional services fees for recruitment site creation (jobwagon package). Underlying technology is built around ATS integration, paid advertising operations across Google Ads, Yahoo! Ads, MicroAd, and Google Analytics, and a portfolio of proprietary specialized job sites that target specific industries and demographics, including シニア求人ナビ (seniors), ビルメン転職ナビ (building maintenance), 電験転職ナビ (electrical certification), 施工管理ナビ (construction management), 弁理士・知財転職ナビ (patent/IP), and 新聞求人ナビ (newspaper-based advertising).

Customer segments span building maintenance, construction/civil engineering, restaurant/food service, manufacturing, education, and real estate, serving both SMBs seeking part-time/albaito staffing and mid-market/large enterprises requiring year-round or specialized hiring. The company is structured as a Kabushiki Kaisha with no disclosed parent company, public listing, venture capital backing, or institutional investors, and has no publicly disclosed revenue or headcount growth data.

Name

（株）内藤一水社

Legal name

株式会社内藤一水社

Website

https://naito.jp

Company type

Private

Founded year

1930

Operating status

Operating

Headcount range

1–10 employees

Short description

株式会社内藤一水社 is a Japanese recruitment advertising and HR introduction firm, founded in 1930, that helps companies across industries source candidates via job media placement across 400+ outlets, Owned Media Recruiting, specialized job boards, and contingency-based headhunting.

Ownership category

akta.pro rank

Product category

Recruitment Services

NAICS

Employment Placement Agencies (561311), Employment Placement Agencies and Executive Search Services (56131)

SIC

Services-Employment Agencies (7361)

akta.pro primary industry

Recruiting Administration Outsourcing (Recruitment Support, Scheduling, Onboarding Ops) (BPACAKAG)

Keywords

• Job advertising services
• Recruitment support
• Human resources introduction
• Owned media recruiting
• Professional recruitment

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Marketing or Sales, Operations, Technology or R&D

Revenue model

1. Job Advertising Services: Placement of job advertisements on job search engines (Indeed, 求人ボックス, スタンバイ) and job media platforms. Revenue from advertising fees based on job posting duration and placement.
2. Professional Recruitment (人材紹介): Introduction of mid-career and experienced professionals across various industries. Success-based fee model where no fees are charged until successful placement. Leverages company's own media network for unique candidate registry.
3. Specialized Professional Recruitment: Specialized recruitment for building maintenance, construction, electrical engineering (電験), and patent/IP professionals. Risk-free success-based model.
4. Recruitment Site Creation: Creation of company recruitment websites and career sites using proprietary packages like 採用サイト制作パッケージ and jobwagon.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

株式会社内藤一水社 provides B2B recruitment advertising and HR support services to Japanese companies across four service lines: Owned Media Recruiting (company-owned recruitment sites with ATS and job search engine advertising via Indeed, Yahoo!, Google); Job Media placement through direct contracts with 400+ domestic outlets covering mid-career, part-time, and new graduate hiring; specialized professional recruitment for licensed industries (building maintenance, construction management, electrical certification, patent/IP) via proprietary niche job boards; and contingency-fee human resources introduction covering sales, administrative, technical, and field roles. Services are sold under consultation-based sales with both transaction-based job advertising fees and success-based placement fees.

Product overview

Naito Issuisha operates a multi-service recruitment advertising platform organized around four core service lines: (1) オウンドメディアリクルーティング — a combination of company-owned recruitment site creation (ATS-based) and paid job search engine advertising (Indeed, Yahoo!, Google); (2) 求人メディア — direct contracts with 400+ domestic media outlets for mid-career, part-time, and new graduate postings across web and print; (3) 専門職採用 — industry-specific job boards for building maintenance, construction, electrical management, and patent/IP professions, offered on a success-fee basis; and (4) 人材紹介 — contingency-fee human resources introduction covering a wide range of job categories. These core services are supported by a portfolio of specialized sub-brand job sites (ビルメン転職ナビ, 電験転職ナビ, 施工管理ナビ, 弁理士・知財転職ナビ, シニア求人ナビ, 新聞求人ナビ) that target specific industries, professions, or demographics, and are distributed through job search engines and the company's own platforms.

Differentiator

Problem solved

Functional benefit

Brands

• シニア求人ナビ: Senior job search portal specializing in job listings for middle-aged and elderly job seekers
• ビルメン転職ナビ
• 電験転職ナビ
• 施工管理ナビ
• 求人箱（パコラ）
• jobwagon
• アドサク
• 転職支援ナビ

Products and services

• オウンドメディアリクルーティング (Owned Media Recruiting) Recruitment strategy service combining company-owned recruitment site creation using ATS (Applicant Tracking System) tools with job seeker attraction via Indeed, Yahoo!, and Google paid ads. Designed for companies seeking to reduce hiring mismatches and improve retention rates through empathy-based hiring.
• 求人メディア (Job Media) Job posting media placement service offering direct contracts with 400+ domestic media outlets covering web, print, and direct sourcing. Supports mid-career, part-time, and new graduate hiring with optimal plan proposals tailored to industry, region, and target demographic.
• 専門職採用 (Specialized Professional Recruitment) Specialized recruitment service for building maintenance, construction/civil engineering, electrical engineering (電験), and patent/IP professions. Uses industry-specific job boards and a risk-reduced success-based pricing model where fees are only charged upon successful placement.
• 人材紹介 (Human Resources Introduction) Contingency-fee human resources introduction service covering sales, administrative, technical, and field roles. Provides access to a unique pool of registered candidates via the company's own media network. No fees are charged until successful placement is completed.
• ビルメン転職ナビ (Building Maintenance Job Navi) Specialized job site focused on the building maintenance industry. Matches employers with candidates experienced in building maintenance and facility management roles, alongside companion portals for electrical (電験), construction management (施工管理), and patent/IP professionals.
• 電験転職ナビ (Electrical Certification Job Navi) Specialized job board targeting licensed electrical management technicians (電験三種合格者), matching qualified candidates with employers in the building maintenance and electrical industries.
• 施工管理転職ナビ (Construction Management Job Navi) Construction management (施工管理) specialist recruitment site, part of the company's industry-specific professional job board portfolio serving the construction and civil engineering sectors.
• 弁理士・知財転職ナビ (Patent Attorney / IP Job Navi) Specialized recruitment site for patent attorneys (弁理士) and intellectual property professionals, offered as part of the company's professional recruitment category.
• シニア求人ナビ (Senior Job Navi) Senior/middle-aged job seeker focused recruitment site offering targeted hiring solutions for the 40s-70s demographic. Integrated with Indeed for direct applications by senior candidates.
• jobwagon (Recruitment Site Creation Package) Recruitment site creation package within the owned media recruiting service, enabling companies to build and utilize their own recruitment pages with ATS integration as part of the オウンドメディアリクルーティング offering.
• アドサク (AdSaku - Job Advertising Media Selection Platform) Job advertising media selection platform enabling optimal media proposal recommendations to match recruitment goals based on industry, job type, region, and target demographic.

Named customers6 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature1 record

Partnerships

Eight partnerships are on record, tiered core, major and supporting.

• Indeed (インディード)coreTechnology or IntegrationMajor job search engine partnership. Naito Issuisha utilizes Indeed as a core platform for job advertising and candidate attraction. The company offers specialized Indeed management services and has integrated Indeed entry functionality into their proprietary job sites like シニア求人ナビ.
• 求人ボックス (Yahoo! Jobs)majorTechnology or IntegrationPartnership with Yahoo! Japan's job search platform 求人ボックス for job posting distribution.
• スタンバイ (Rakuten Standby)majorTechnology or IntegrationPartnership with Rakuten's job search service スタンバイ for expanded job posting reach.
• Google AdssupportingTechnology or IntegrationUtilizes Google Ads for paid search and display advertising to attract job seekers and HR decision makers.
• Yahoo! AdssupportingTechnology or IntegrationUtilizes Yahoo! Japan advertising platform for targeted recruitment marketing campaigns.
• 400+ Job Media CompaniescoreChannel Partner/ Reseller/ DistributorDirect partnerships with over 400 job media companies nationwide covering web, print, and direct sourcing services. Enables optimized media selection based on industry, job type, and target demographic.
• マイクロアド (MicroAd)supportingTechnology or IntegrationJapanese programmatic advertising platform used for ad delivery, analysis, frequency control, and ad fraud prevention.
• Google AnalyticssupportingTechnology or IntegrationWebsite analytics service for tracking page views, dwell time, user environment, and traffic sources to optimize recruitment marketing.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• en Japan: Major Japanese recruitment firm operating en Haken, en Agent, and other mid-career placement services with success-based fees. Directly comparable to Naito's 人材紹介 and mid-career recruitment advertising business across Japanese enterprises.
• BizReach: Operates a high-end job board and executive search service for senior and managerial talent in Japan. Comparable in the mid-career/experienced professional placement segment where Naito's 人材紹介 also competes.
• Pasona Career: Operates doda, Japan's second-largest job board, alongside professional placement and recruitment outsourcing services. Directly comparable in mid-career recruitment advertising and contingency placement for Japanese enterprises.

Emerging players

• JobMedley (Medley): Vertically specialized job platform focused on healthcare and nursing professionals in Japan. Comparable as an emerging player in industry-specific recruitment marketplaces that overlaps with Naito's niche specialized job boards.
• Wantedly: Tech-focused job matching platform in Japan emphasizing company culture fit and direct candidate-employer connection. Comparable as an alternative recruitment channel targeting mid-career talent in Japan, particularly in SMB and startup segments.

Broad incumbents

• Indeed Japan: Japan's largest job search engine and a core channel Naito leverages for client campaigns. As a platform partner and broader market incumbent, Indeed both enables and competes with Naito's job advertising placement business.
• Mynavi (MyNavi): One of Japan's largest HR media companies operating Mynavi Tenshoku, Mynavi Shinsotsu, and other recruitment advertising brands. Comparable as a broad incumbent in the same job advertising and placement categories Naito serves.
• Yahoo! Japan Jobs (求人ボックス operator): Operates 求人ボックス and Yahoo! Recruiting, two of the major Japanese job search engines Naito integrates with. Comparable as a platform-level incumbent whose channels Naito both leverages and competes against for recruitment ad spend.
• Recruit Holdings: Japan's largest recruitment and HR services conglomerate operating Rikunabi, Indeed, Townwork, and other major job platforms. Comparable as the dominant incumbent in the same B2B recruitment advertising and placement market Naito serves.

Regional players

• Corporate Direction (CDI Solutions): Japan-focused specialist recruiter with deep presence in construction, real estate, and building maintenance verticals. Closely comparable to Naito's ビルメン・施工管理 specialized recruitment service and patent/IP introductions.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/%EF%BC%88%E6%A0%AA%EF%BC%89%E5%86%85%E8%97%A4%E4%B8%80%E6%B0%B4%E7%A4%BE

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about （株）内藤一水社