Weeds

What Weeds does

Weeds (株式会社ウィーズ) is a privately held Japanese system-development company founded in March 1991 and headquartered in Toshima ward, Tokyo. The firm designs, develops, and sells computer software with stated specialization in financial systems (banking core, credit, securities, life and non-life insurance) and real-estate-adjacent systems, alongside broader custom software and hardware integration work. Its technology portfolio spans three distinct architectural domains: mainframe systems (banking deposits/exchange/loans/claims, banking information systems, credit contract/billing/sales management, securities online and back-office, life insurance, property and casualty insurance), client-server systems (sales management, distribution management, automatic dispatch, customer management), and control systems (metering and billing, environmental control, facility management, medium-flow calibration). Public-sector work has included HR and payroll management systems for government clients.

The company's business model combines two complementary revenue streams. The first is custom software design, development, and sales — project-based work in financial services, public sector, and selected industrial verticals — supported by ongoing software and system support (maintenance and technical support) and ancillary computer hardware sales. The second stream, introduced in February 2018 after the firm obtained Worker Dispatch Business Permit 派13-309274, is the dispatch (派遣) of system engineers and programmers to enterprise clients across Tokyo's 23 wards and surrounding areas. The firm recruits engineers directly (current posted salaries of ¥212,000 for university graduates and ¥197,000 for vocational-school graduates, with experience-based compensation for mid-career hires) and deploys them on client projects that run on standard 9:00–18:00 schedules. Go-to-market is direct enterprise field sales with no resellers, marketplaces, or OEM channels; no public pricing, no marketing channel beyond the corporate website, and no social media presence are documented.

As of April 2026, Weeds had 10 employees, down from 12 in April 2023. Registered capital stands at ¥10 million following capital increases in 1992 and 1993; there have been no subsequent funding rounds, no M&A activity, and no subsidiaries. Revenue is not publicly disclosed. The firm remains under the leadership of Representative Director and President Arai Kazumasa (新井一正), with Director Hirooka Teruhisa (廣岡輝久) and Auditor Shinohara Keiko (篠原桂子). The overall profile is that of a small, mature, single-site niche services firm operating in legacy-finance and industrial IT verticals, with no observed offensive investment or expansion signaling.

Name

Weeds

Legal name

株式会社ウィーズ

Website

https://weeds-inc.com

Company type

Private

Founded year

1991

Operating status

Operating

Headcount range

11–50 employees

Short description

Weeds (株式会社ウィーズ) is a privately held Japanese software firm founded in 1991 and headquartered in Tokyo that designs, develops, and supports mainframe, client-server, and control systems for banking, insurance, credit, securities, and public-sector clients, while also dispatching system engineers to enterprise customers across Tokyo under worker-dispatch permit 派13-309274.

Ownership category

akta.pro rank

Headquarters

HQ city

Toshima

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Software Design, Development and Sales: Custom software development services for clients, including design, development, and sales of software systems
2. Software and System Support: Maintenance and support services for software systems and technical support services
3. Hardware Design, Development and Sales: Computer hardware design, development and sales as part of integrated solutions
4. Worker Dispatch (Labor Dispatch): Dispatch of system engineers and programmers to client organizations. The company holds labor dispatch permit (派13-309274) and transitioned to worker dispatch business in February 2018

Go-to-market motion1 record

Distribution channels2 records

Marketing channels1 record

Core offering

Weeds (株式会社ウィーズ) designs, develops, and sells custom computer software for financial institutions (banking, credit, securities, insurance), public-sector organizations (HR and payroll systems), real estate companies, logistics and transportation firms, and industrial control systems. In parallel, the company operates a worker dispatch (派遣) business that places system engineers and programmers at client organizations. The dual offering combines project-based custom software delivery with staff augmentation under a single vendor relationship.

Product overview

Weeds (株式会社ウィーズ) is a system development company offering a portfolio of specialized software systems. The company provides mainframe-based systems (金融系: banking core systems, credit systems, securities systems, insurance systems; 公共系: HR and payroll systems; その他: real estate, logistics, transportation, and financial systems), client-server (C/S) systems for sales, delivery, dispatching, and customer management, and control systems for industrial applications. Weeds operates primarily as a custom software development and staffing (labor dispatch) services provider, with systems spanning financial services, public sector, and industrial control domains.

Differentiator

Problem solved

Functional benefit

Products and services

• Financial Systems Software Development Design, development, and sale of custom computer software for financial institutions including banks, credit firms, securities firms, and insurance carriers. The software supports core and peripheral financial business processes.
• Public-Sector HR and Payroll Software

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Three partnerships are on record, tiered minor.

• 三菱東京UFJ銀行minorOthersPrimary banking partner for financial transactions. The company maintains corporate bank accounts with Mitsubishi Tokyo UFJ Bank as one of its transaction banks.
• みずほ銀行minorOthersTransaction banking partner. The company maintains corporate bank accounts with Mizuho Bank as one of its transaction banks.
• 第一勧業信用組合minorOthersTransaction banking partner. The company maintains corporate bank accounts with Daiwa Sanwa Credit Union as one of its transaction banks.

Scale indicators3 records

Recent moves5 records

Expansion highlights2 records

Direct peers

• Pasona Inc. Major Japanese human resources and staffing group with significant IT engineer dispatch operations. Competes with Weeds for IT派遣 contracts from banks, insurers, and corporates across Tokyo and other Japanese metro areas.
• TechnoPro Holdings: Japan's largest IT engineer staffing (dispatch) and engineering services firm, listed on TSE. Operates the same 派遣 engineer-dispatch model as Weeds and competes directly for the same pool of system engineers across financial services and enterprise IT staffing contracts in Japan.
• Works Applications Co., Ltd. Mid-sized Japanese enterprise software and systems development firm primarily serving large Japanese enterprises with custom and productized ERP, HR, and financial systems. Comparable in geographic and custom-development focus to Weeds, though operating at a larger scale and with proprietary productized components.
• ULS Group, Inc. Japanese IT consulting and systems development firm focused on financial services, insurance, and capital markets. Competes head-to-head with Weeds for IT engineer dispatch and custom development mandates in Tokyo's banking and insurance sectors.
• CRESCO Co., Ltd. Mid-sized Japanese IT services firm providing custom software development and engineer staffing to financial, manufacturing, and distribution clients. Comparable scale and business model to Weeds, with similar reliance on financial-sector mainframe and open-systems work.

Broad incumbents

• Nihon Unisys, Ltd. Established Japanese IT services firm specializing in financial services, public sector, and enterprise systems integration. Overlaps directly with Weeds' mainframe banking, insurance, and public-sector custom development offerings, though serving a much larger client portfolio.
• SCSK Corporation: Major Japanese SI subsidiary of Sumitomo Corporation providing enterprise systems development, financial IT services, and IT staffing. Competes with Weeds in financial services and industrial control systems custom development across Japanese enterprises.
• BIPROGY Inc. Mid-to-large Japanese system integrator (formerly Nihon Unisys Solutions) delivering banking, insurance, credit, and public-sector core systems on mainframe and open platforms. Competes for the same banking/insurance custom-development mandates Weeds serves, but at materially greater scale.
• Future Corporation: Japanese IT consulting and systems development firm serving banks, insurance, and asset managers with custom core systems and consulting. Adjacent competitor to Weeds in the financial-services custom-development niche with stronger consulting depth.
• NTT DATA Group Corporation: Largest Japanese IT services group delivering mainframe banking, insurance, securities, and public-sector systems at a global scale. Competes with Weeds for the same banking/insurance custom-development RFPs and IT派遣 contracts, but with vastly greater bench and delivery capacity.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat2 records

Key risks5 records

Key highlights5 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

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 Weeds