Overflow

HRTech / Recruitment Softwareoverflow.co.jp

Overflow is a Tokyo-based HRTech company operating Offers, an AI-powered job-change platform for high-class engineers and product managers, with 35,000+ registered engineers and 1,000+ client companies across Japan. It monetizes through subscriptions, placement fees, and a 2026-expanded AI service suite.

Company typePrivate
Founded2017
HeadquartersTokyo, Japan
Headcount101–250
GTM typeB2B
OfferingSoftware

What Overflow does

Overflow (株式会社overflow) is a Tokyo-headquartered, privately-held HRTech company founded in June 2017 by three ex-CyberAgent co-founders — Suzuki Yuto (CEO), Tanaka Makoto (CPO), and Otani Tabito (CTO). After nearly going bankrupt in early 2018 with ¥1M in the bank, the company pivoted from Fincy (financial services) and web consulting into the engineer-recruitment space and built Offers, an AI-powered job-change platform targeting high-class engineers and product managers. As of the input data, the platform has registered 35,000+ engineers and PdMs and serves 1,000+ client companies across Japan, with a lean team of 22 full-time employees supplemented by a remote-capable network of 150+ members including freelancers and part-time staff.

The product surface centers on Offers and its modular ecosystem: Offers (marketplace with AI matching on technical background, decision-making rationale, and career aspirations), Offers MGR (enterprise recruitment management), Offers Jobs (job posting service), and AI Talent (knowledge platform certifying AI professionals' expertise and connecting them with ¥15M+ and CTO/VPoE-class positions). A 2026 brand refresh repositioned the company around "AI-era recruitment," introducing AI-native offerings including Career Drift Score (a predictive metric for candidate job-change willingness), AI Builder job category, the open-source Offers AI Harness for AI-agent extensibility, Resume Creation Service (beta, combining consultant interviews with AI structuring), HR AI Consulting, AI RPO with managed-service economics, and a Budget Retainer contract model.

Overflow monetizes through a mix of subscription fees and placement fees from employer clients, with concierge advisory services for enterprise accounts. Distribution combines direct enterprise sales, self-serve platform access at offers.jp and ai-talent.ai, an extensive content-marketing footprint (overflow.co.jp/hr blog with 65+ pages), and event-driven acquisition (AI×Recruitment Conference drawing 1,000+ attendees). The only disclosed capital event is a ~¥100M (~$934K) seed round in March 2020 from DNX Ventures and East Ventures; no subsequent funding, M&A, or institutional investor participation has been disclosed. The company operates exclusively within Japan, has no disclosed subsidiaries, and is controlled by its three co-founders.

Overflow firmographics

Firmographics

Name: Overflow
Legal name: 株式会社overflow
Website: https://overflow.co.jp
Company type: Private
Founded year: 2017
Operating status: Operating
Headcount range: 101–250 employees
Short description: Overflow is a Tokyo-based HRTech company operating Offers, an AI-powered job-change platform for high-class engineers and product managers, with 35,000+ registered engineers and 1,000+ client companies across Japan. It monetizes through subscriptions, placement fees, and a 2026-expanded AI service suite.
Ownership category
akta.pro rank

Overflow industry classification

Industry

Product category: HRTech / Recruitment Software
NAICS: Employment Placement Agencies (561311), Employment Placement Agencies and Executive Search Services (56131)
SIC: Services-Employment Agencies (7361), Services-Prepackaged Software (7372)
akta.pro primary industry: Talent Acquisition (Recruiting) & Applicant Tracking (ATS) (BPACAPAD)
akta.pro secondary industries: AI Integration & Orchestration Platforms (Connectors, Workflow, iPaaS for AI) (HDAEANAI), Enterprise AI Data & Knowledge Platforms (Vector Databases, Knowledge Graphs) (HDAEANAH)

Keywords

Engineer recruitment platform
AI-powered matching
HRTech software
Talent acquisition platform
Job change marketplace

Where Overflow is headquartered

Location

Headquarters

HQ city: Tokyo
HQ country: Japan
HQ region: Asia

Offices1 record

Markets served

Overflow business model

Business model

GTM type: B2B
Offering type: Software
Cost components: Personnel, Technology or R&D, Marketing or Sales, Operations

Revenue model

Offers Platform Services: AI-powered engineer and Product Manager recruitment platform connecting job-seeking engineers with hiring companies. Revenue derived from employer subscription and placement fees. Includes concierge plan services with personalized recruitment advisory.
Offers Jobs: Job posting service for IT talent recruitment
Offers MGR: HRTech solution for recruitment management
AI Talent Platform: Knowledge platform for AI professionals providing career development services and priority access to high-salary positions (15M+ JPY annual)
HR AI Consulting: Consulting services for AI-powered recruitment strategy and implementation
Budget Retainer: Budget-based retainer model treating recruitment budget as investment
AI RPO: AI-powered Recruitment Process Outsourcing service

Pricing tiers

Model	Billing	Price
Freemium	Pay-as-you-go	Beta - Free Resume Creation Service for engineers and PdMs
Subscription	Annual	Engineering Manager Position
Subscription	Annual	Frontend Engineer Position

Go-to-market motion1 record

Distribution channels5 records

Marketing channels5 records

Overflow product offering

Product offering

Core offering

Overflow operates the Offers platform, an AI-powered job-change marketplace that connects 35,000+ registered engineers and product managers with 1,000+ hiring companies in Japan. The platform uses AI to deeply analyze candidates' technical backgrounds, decision-making rationale, and career aspirations, then matches them with employers, supplemented by AI Talent (AI-expertise verification), Offers MGR (recruitment management), Offers Jobs (job postings), Resume Creation Service, HR AI Consulting, and AI RPO offerings.

Product overview

Overflow operates a multi-product HRTech platform centered on the AI-powered job change platform 'Offers' for engineers and product managers, with complementary services including AI Talent (knowledge platform for AI professionals), Offers MGR (recruitment management), and Offers Jobs (job postings). The platform leverages AI to match engineers with companies based on technical background and career aspirations. Recent expansions include the Resume Creation Service beta, open-source Offers AI Harness tool, HR AI Consulting, AI RPO, Budget Retainer contracting, and the Career Drift Score metric. The company also operates the Fincy financial service.

Differentiator

Problem solved

Functional benefit

Brands

Offers: AI-era engineer job change platform. High-class engineer and PdM job change platform with 35,000+ registered users and 1,000+ client companies. AI analyzes technical background and career aspirations to match engineers with companies.
AI Talent
Offers MGR
Offers Jobs

Products and services

Offers AI-powered job-change platform for high-class engineers and product managers, with 35,000+ registered users and 1,000+ client companies. AI analyzes technical background and career aspirations to match candidates with employers.
AI Talent (エーアイタレント)

Quantifiable outcome

35,000 registered engineers on platform
+3 more outcomes

Companies that use Overflow

Customer profile

Named customers6 records

Segments3 records

Ideal customer profiles2 records

Overflow technology and API

Technology

Technology focussed Yes

API detail

Has API: No
API docs
API detail

Core technology

AI maturity

App detail

AI capability8 records

Feature5 records

Overflow partnerships and signals

Strategic signal

Partnerships

One partnership is on record.

Potentiallight (株式会社ポテンシャライト)coreStrategic or Co-development Partner · 21 May 2026Strategic partnership for AI-native era talent portfolio seminars. Potentiallight brings 400+ company HR support experience, ranked #1 among 3,000 career counselors at Recruit Career. Joint seminars on AI talent recruitment and organizational design, positioning overflow's data-driven approach with Potentiallight's HR expertise.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Overflow competitors and assessment

Company assessment

Direct peers

Wantedly: Wantedly is a Japanese recruitment platform focused on engineer and creative talent, operating a job matching marketplace with social/portfolio profiles. It directly competes with Overflow's Offers platform in the Japanese engineer hiring market.
BizReach: BizReach operates one of Japan's leading high-class professional recruitment platforms, targeting senior talent across industries including engineering. It competes with Overflow's Offers platform for high-salary engineer and PdM placements.
Forkwell: Forkwell is a Japanese career platform specifically built for engineers, combining portfolio sharing, technical content, and job matching. It is a direct competitor to Overflow's Offers platform in the Japanese engineer recruitment space.
Lapras: Lapras is a Japanese engineer portfolio and recruitment platform that uses AI to match candidates with companies based on skills and GitHub activity. It directly competes with Overflow's Offers in tech-focused AI-powered matching.
Qiita Jobs: Qiita Jobs is a developer-focused job board operated by Qiita, leveraging Japan's largest technical knowledge-sharing community. It competes with Overflow's Offers Jobs for mid-market IT talent recruitment advertising.
Green: Green is a Japanese job board focused on IT and web industry recruitment, operated by At Will. It serves as a direct competitor to Overflow's Offers Jobs service in the Japanese mid-market engineering recruitment space.

Broad incumbents

Recruit Holdings: Recruit Holdings is Japan's largest HR conglomerate operating Indeed, Rikunabi, and other recruitment brands globally. While broader in scope, it competes with Overflow through its engineer-focused offerings and has the scale to replicate AI matching features.
LinkedIn: LinkedIn is the global professional network with integrated recruitment tools (Recruiter, Jobs). It competes broadly with Overflow for both candidate sourcing and job posting, particularly for senior engineers and PdMs.

Others

Lever: Lever is a US-based ATS and recruitment platform combining CRM and hiring automation. While not a direct Japanese competitor, it represents the category of HRTech tooling that Overflow's Offers MGR product overlaps with in the recruitment management space.

Regional players

Eight (Sansan): Eight is a Japanese business card-focused networking app by Sansan that has expanded into recruitment and business networking. It serves as an adjacent platform in the Japanese professional networking and recruitment space where Overflow operates.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

Overflow financial estimates

Financial estimate

Revenue estimate

Valuation estimate

Overflow leadership team

Management profile

Number of profiles

Profiles4 records

Overflow funding detail

Funding detail

Funding overview

Funding rounds1 record

Investors2 records

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

Overflow M&A and investment

M&A and investment

M&A

Investments

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

Frequently asked questions about Overflow

What does Overflow do?

Is Overflow a public or private company?

Overflow is a private company. It is classified as venture growth investor backed and is currently operating.

When was Overflow founded?

Overflow was founded in 2017. It employs 101 to 250 people.

Where is Overflow based?

Overflow is headquartered in Tokyo, Japan, in the Asia region.

How does Overflow make money?

Seven revenue lines are on record. Offers Platform Services are the primary driver. The others are offers Jobs, offers MGR, AI Talent Platform, HR AI Consulting, budget Retainer and AI RPO.

Who are Overflow's main competitors?

Direct peers on record are Wantedly, BizReach, Forkwell, Lapras, Qiita Jobs and Green. Broad incumbents are Recruit Holdings and LinkedIn. Lever is listed as an others. Eight (Sansan) is listed as a regional player.

Does Overflow have an API?

No public API is recorded for Overflow.

What industry is Overflow in?

Overflow's product category is HRTech / Recruitment Software. Its primary akta.pro industry code is BPACAPAD, Talent Acquisition (Recruiting) & Applicant Tracking (ATS), with a secondary code of HDAEANAI, AI Integration & Orchestration Platforms (Connectors, Workflow, iPaaS for AI). Its NAICS code is 561311 and its SIC code is 7361.