RIW Group

What RIW Group does

RIW Group (legal name: RIW Dienstleistungs GmbH) is a family-owned, Cologne-headquartered diversified industrial and building services conglomerate founded in 1981 by Günter Stümer and now led in its second generation by Gesellschafter Geschäftsführer Jörg Stümer. The group operates through a holding structure of wholly-owned GmbH subsidiaries covering industrial cleaning and maintenance (RIW Industrieservice GmbH), building services (RIW Gebäudeservice GmbH), personnel services and temporary staffing (RIW Personalservice GmbH, including the promedi medical-staffing brand acquired May 2025), plant construction and engineering (RIW Anlagenbau GmbH), renovation services (RIW Sanierungsservice GmbH), vocational training (TecMed-Bildung GmbH), security and facility management (SDL Group), and senior everyday assistance (Heinzelmännchen professional GmbH).

The company employs more than 2,000 people across at least 17 German cities, generating revenue through professional-services contracts — service contracts, on-demand maintenance, project-based work, staffing margins and placement fees, and government-accredited vocational training — with pricing typically quote-based. Its go-to-market is a sales-led, direct enterprise model with cross-subsidiary coordination through monthly management meetings and a developing unified sales concept. Customer concentration spans marquee industrial, automotive, chemical, pharmaceutical, logistics, and consumer-goods enterprises including Volkswagen Nutzfahrzeuge, Siemens, Miele, VOSS, Reifenhäuser, Kirchhoff Automotive, and Imperial Supply Chain Solutions.

RIW holds ISO 9001:2015, ISO 14001:2015, SCC, SCP, AZAV, GVP, and TÜV certifications, and operates a whistleblower compliance program under the HinSchG. The group's technology stack is non-proprietary, with no AI/ML capabilities, APIs, or patents disclosed; competitive differentiation rests on multi-service bundling, regional branch density, certification-driven regulatory access, and four decades of family-led operating continuity. Recent strategic moves include the promedi acquisition (medical staffing), an India dual-vocational-training initiative with GIZ launched January 2026, a Kimberly-Clark Professional distribution partnership, and the launch of senior everyday-assistance services under Heinzelmännchen professional.

Name

RIW Group

Legal name

RIW Dienstleistungs GmbH

Website

https://riw.de

Company type

Private

Founded year

1981

Operating status

Operating

Headcount range

11–50 employees

Short description

RIW Group is a family-owned, Cologne-headquartered diversified industrial and building services conglomerate founded in 1981, employing 2,000+ people across 17 German cities through subsidiaries spanning industrial cleaning, building services, personnel staffing, plant construction, renovation, vocational training, security, and senior care for enterprise and institutional clients.

Ownership category

akta.pro rank

Headquarters

HQ city

Cologne

HQ country

Germany

HQ region

Europe

Offices19 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Marketing or Sales, Others

Revenue model

1. Industrieservice (Industrial Services): Industrial cleaning and maintenance services provided to automotive, chemical, pharmaceutical, logistics, and manufacturing clients. Revenue is generated through service contracts, on-demand maintenance, and project-based work.
2. Gebäudeservice (Building Services): Building cleaning and facility management services for administrative buildings, hospitals, senior facilities, and hotels. Includes maintenance and long-term property preservation.
3. Personalservice (Personnel Services): Temporary staffing, permanent placement, and labor leasing (Arbeitnehmerüberlassung) across industries including chemistry, metalworking, logistics, finance, healthcare, and commercial administration. Revenue generated through staffing margins and placement fees.
4. Anlagenbau (Plant Construction): Design, fabrication, and installation of piping systems, structural steel, storage tanks, and pneumatic systems. Services include turnkey project delivery, PT testing, and photographic documentation. Flexible pricing based on fixed prices, measurement, or hourly rates.
5. Sanierungsservice (Rehabilitation Services): Sanitation, modernization, floor installation, building management, construction cleaning, and additional services for existing properties.
6. TecMed-Bildung (Vocational Training and Education): Adult education and training in nursing care and technical fields, including the dual vocational training program, trainer qualification, and technical courses (pipe fitting, welding). Revenue from tuition and government-accredited training programs.
7. Senior Care / Alltagshilfe (Everyday Assistance): Care and support services for older and care-dependent individuals, including shopping assistance, household cleaning, accompaniment to appointments, and social companionship. Services are recognized under §45a SGB XI and partially financed through nursing care insurance.
8. promedi (Medical Staffing): Temporary staffing and placement services for the medical and socio-pedagogical sector under the promedi brand, which joined the group in May 2025. Nearly 20 years of experience with a broad branch network.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

RIW Group is a German family-owned diversified services company that supplies industrial cleaning, building/facility services, personnel services (staffing and HR solutions), plant construction, rehabilitation services, and vocational training to business clients. Its six service lines are delivered via multiple subsidiaries operating under the RIW Group umbrella, with more than 2,000 employees supporting on-site industrial, facility, construction, and workforce-training engagements.

Product overview

RIW Group is a multi-service conglomerate organized as a holding of affiliated GmbH companies offering a coordinated, cross-selling service portfolio. The portfolio spans industrial services (cleaning, maintenance), facility management, personnel staffing and placement, plant engineering and construction, renovation, vocational education and training, senior care, and security/facility management. The core subsidiaries — RIW Industrieservice GmbH, RIW Gebäudeservice GmbH, RIW Personalservice GmbH, RIW Anlagenbau GmbH, RIW Sanierungsservice GmbH, TecMed-Bildung GmbH, Heinzelmännchen Gebäudereinigung GmbH, Heinzelmännchen professional GmbH, SDL Group, and mokoflex — collectively provide over 2,000 employees across multiple German locations under a unified brand, enabling customers to source multiple services from a single partner.

Differentiator

Problem solved

Functional benefit

Products and services

• Industrial Cleaning
• Building Services
• Personnel Services
• Plant Construction
• Rehabilitation Services
• Vocational Training

Named customers10 records

Segments4 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Six partnerships are on record, tiered core and minor.

• Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbHcoreStrategic or Co-development Partner · 1 January 2026RIW Group is collaborating with GIZ as part of the Duale Berufsausbildung (dual vocational training) project in India, aiming to establish dual vocational training centers in Chennai, Kochi, and Delhi. The project focuses on creating sustainable training structures and strengthening German-Indian cooperation in skilled worker development.
• SÜLZLE GruppeminorStrategic or Co-development Partner · 1 January 2026RIW Group collaborates with SÜLZLE Gruppe as part of the India vocational training initiative, contributing expertise in vocational education and training structures.
• Guidance Tamil NaducoreStrategic or Co-development Partner · 1 January 2026Regional government partner in the state of Tamil Nadu, India, supporting the dual vocational training project. Collaborates on establishing and developing the vocational training center.
• Directorate of Technical Education – DOTE (India)coreStrategic or Co-development Partner · 1 January 2026Government technical education authority in India, involved in the dual vocational training project to align German-style vocational training with Indian technical education standards.
• Der Mittelstand. BVMW (Bundesverband der Mittelständischen Wirtschaft)minorStrategic or Co-development Partner · 1 January 2026BVMW, the German SME association, is a partner in the India project, supporting cross-border skilled worker development for German SMEs.
• Kimberly-Clark ProfessionalminorChannel Partner/ Reseller/ Distributor · 1 January 2026Heinzelmännchen professional GmbH is an official sales partner for the Kimberly-Clark Professional Icon Collection — a new generation of washroom and hygiene solutions.

Scale indicators3 records

Recent moves8 records

Expansion highlights6 records

Broad incumbents

• Bilfinger SE: Large publicly listed industrial services and engineering group serving process industries across Europe. Broader portfolio than RIW, with overlapping industrial maintenance and plant services for similar enterprise customers (Siemens-adjacent).
• Strabag Property and Facility Services: Facility management arm of Strabag SE, providing technical and commercial facility management, cleaning, and security services across Germany and Europe. Overlaps with RIW Gebäudeservice and SDL Group.
• Randstad Deutschland: Major international staffing firm operating in Germany with temporary staffing, permanent placement, and HR services. Directly competes with RIW's Personalservice and promedi staffing operations.
• ManpowerGroup Deutschland: Global staffing leader with significant German presence in temporary help, permanent placement, and workforce solutions. Comparable to RIW Personalservice GmbH and promedi across multiple industries.

Direct peers

• Klüh Service Management: Düsseldorf-based multi-service provider in cleaning, security, personnel services, and facility management. Direct competitor in RIW's core building services and staffing segments in Germany.
• Piepenbrock Dienstleistungen: Family-owned German facility services group (similar ownership profile to RIW) with cleaning, maintenance, security, and personnel services across Germany. Comparable scale and vertical breadth.
• Dussmann Group: Large German facility services provider covering cleaning, building technology, catering, security, and personnel services. Comparable multi-subsidiary model and enterprise customer focus.
• Gegenbauer Holding: Berlin-based facility and property services group with cleaning, technical building management, security, and personnel services. Closely overlaps RIW's multi-service model with national branch coverage.
• Wisag Industrie Service: Largest German industrial services provider offering cleaning, maintenance, security, and facility management to industrial and commercial clients. Directly comparable to RIW across industrial cleaning, building services, and multi-site enterprise contracts.

Regional players

• Gebäudereinigung München (regional consolidators e.g., Gegenbauer subsidiary Stumpf): Regional German building cleaning and facility services providers; comparable to RIW Gebäudeservice and Heinzelmännchen Gebäudereinigung at city/regional level rather than full national scope.

Market position

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/riw-dienstleistungsgruppe

Compliance13 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries11 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 RIW Group