Siebert & Wassink
Siebert & Wassink is a Dutch regional HR consulting firm offering executive search, recruitment, assessment, and organizational advisory services to large and mid-sized enterprises across Eastern Netherlands, operating as part of Concreto Group.
- Company typePrivate
- Founded2000
- HeadquartersHengelo, Netherlands
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Siebert & Wassink does
Siebert & Wassink BV is a Dutch private limited liability company (Besloten Vennootschap) operating as a regional HR consulting and executive search firm headquartered in Hengelo, Netherlands, with additional offices in Arnhem and Zwolle. Founded in 2000, the firm is a member of Concreto Group, a diversified organizational development holding, and serves large and mid-sized enterprises across Eastern Netherlands (Oost-Nederland) in industries including manufacturing, healthcare, construction/insulation, technology, food manufacturing, and waste management. The company delivers four integrated service lines: Executive Search (C-level, directors, board members, senior management); Werving & Selectie / Recruitment & Selection across six functional domains; Assessment & Development covering selection, finance, development, and career assessments plus leadership, team, and coaching programs (including the Jong DGA / Young CEO program); and HR & Organizational Advisory spanning HR advice, organizational development, business succession, HR scans, and salary benchmarking.
The firm's business model is a traditional professional services model: revenue is generated through project-based engagements billed at hourly rates, fixed project fees, or agreed day rates (one day part equals a maximum of 4 hours, per published General Terms and Conditions), with travel costs reimbursed separately for distances exceeding 30 km and payment terms of 14 days. The go-to-market is sales-led and direct: senior consultants engage enterprise clients at the strategic level, supplemented by a referral-based network in the regional business community. Marketing is content-driven, centered on the Maandacht thought-leadership blog series and an active vacancy board on the company's website. No proprietary technology platform is disclosed; the firm's intellectual capital resides in the experience and networks of its consultants and its relationships with named enterprise clients including Voortman, Sigmax, MST, Kingspan, Royal Kaak, Plavei, REMONDIS, Witte van Moort, DGS, Wouter Twitzel, and Proge.
Ownership is held within Concreto Group; the company is privately held with no disclosed funding rounds, investors, or capital structure. Headcount is reported in the 11–50 range, with six named consultants disclosed on the website across the Hengelo, Arnhem, and Zwolle offices. Revenue is not disclosed in source materials.
Siebert & Wassink firmographics
Firmographics- Name
- Siebert & Wassink
- Legal name
- Siebert & Wassink BV
- Website
- https://siebertwassink.nl
- Company type
- Private
- Founded year
- 2000
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Siebert & Wassink is a Dutch regional HR consulting firm offering executive search, recruitment, assessment, and organizational advisory services to large and mid-sized enterprises across Eastern Netherlands, operating as part of Concreto Group.
- Ownership category
- akta.pro rank
Siebert & Wassink industry classification
Industry- Product category
- HR Consulting
- NAICS
- Employment Placement Agencies and Executive Search Services (56131), Executive Search Services (561312), Human Resources Consulting Services (541612)
- SIC
- Services-Employment Agencies (7361), Services-Management Consulting Services (8742)
- akta.pro primary industry
- Technology & Product Leadership Search (CIO/CTO/CDO/CPO) (BPACAAAC)
- akta.pro secondary industry
- M&A HR Advisory (Due Diligence, Integration, Carve-outs) (BPACAJAL)
Keywords
Where Siebert & Wassink is headquartered
LocationHeadquarters
- HQ city
- Hengelo
- HQ country
- Netherlands
- HQ region
- Europe
Offices3 records
Markets served
Siebert & Wassink business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Others
Revenue model
- Project-based Consulting: Revenue generated through project engagements including executive search, recruitment and selection, assessments, and HR advisory services. Billed based on hourly rates, fixed project fees, or agreed day rates. One day part equals maximum 4 hours. Travel costs reimbursed separately for distances over 30km.
- Salary Benchmarking: Salary benchmark reports provided as standalone HR advisory service to organizations seeking market intelligence on compensation positioning.
- HR Advisory Services: HR and organizational consulting services including HR scans, organizational development, and succession planning. Billed according to time spent and agreed rates.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Pay-as-you-go | Professional Services - Project/Fee Based |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels2 records
Siebert & Wassink product offering
Product offeringCore offering
Siebert & Wassink is a Dutch HR consulting firm that provides executive search and recruitment & selection (Werving & Selectie), HR advisory (HR Advies), professional assessments, and organizational development (Organisatieontwikkeling) services. The firm is based in Hengelo and Enschede (Eastern Netherlands) and operates as part of Concreto Group, serving client organizations across the Twente region and beyond.
Product overview
Siebert & Wassink is a Dutch HR and organizational development consultancy offering professional services from strategy to implementation. The company operates four main service lines: Executive Search (recruitment of C-level, directors, board members, and senior management); Werving & Selectie (recruitment and selection across multiple sectors); Assessment & Ontwikkeling (assessment, development, leadership programs, and team development); and HR & Organisatieadvies (HR consulting, organizational development, business succession, and salary benchmarking). These services are delivered through their offices in Hengelo (headquarters), Arnhem, and Zwolle.
Differentiator
Problem solved
Functional benefit
Products and services
- Executive Search / Recruitment & Selection (Werving & Selectie) Executive search and recruitment & selection service for organizations seeking to hire executive, management, or professional staff. The service is delivered to client organizations in the Eastern Netherlands and beyond.
- HR Advisory (HR Advies) HR advisory and consulting service for client organizations, covering HR strategy, policy, and workforce-related advisory.
- Assessment Professional assessment service supporting client organizations in selection, development, and talent evaluation processes.
- Organizational Development (Organisatieontwikkeling) Organizational development service supporting client organizations with change, team, and organizational effectiveness initiatives.
- Salary Benchmark (Salaris Benchmark) Salary benchmarking service / tool used to support client organizations in setting compensation levels for roles.
Companies that use Siebert & Wassink
Customer profileNamed customers11 records
Segments1 record
Ideal customer profiles1 record
Siebert & Wassink technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Siebert & Wassink partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Concreto GroupcoreSiebert & Wassink is part of Concreto Group, an organizational development group. Concreto Group encompasses multiple companies focused on organizational development, providing strategic alignment and resources across the group.
Scale indicators1 record
Recent moves5 records
Expansion highlights6 records
Siebert & Wassink competitors and assessment
Company assessmentMarket position
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
Siebert & Wassink social profiles
Digital presenceSiebert & Wassink financial estimates
Financial estimateRevenue estimate
Valuation estimate
Siebert & Wassink leadership team
Management profileNumber of profiles
Profiles6 records
Siebert & Wassink funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Siebert & Wassink M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Siebert & Wassink
What does Siebert & Wassink do?
Siebert & Wassink is a Dutch HR consulting firm that provides executive search and recruitment & selection (Werving & Selectie), HR advisory (HR Advies), professional assessments, and organizational development (Organisatieontwikkeling) services. The firm is based in Hengelo and Enschede (Eastern Netherlands) and operates as part of Concreto Group, serving client organizations across the Twente region and beyond.
Is Siebert & Wassink a public or private company?
Siebert & Wassink is a private company. It is classified as corporate owned and is currently operating.
When was Siebert & Wassink founded?
Siebert & Wassink was founded in 2000. It employs 11 to 50 people.
Where is Siebert & Wassink based?
Siebert & Wassink is headquartered in Hengelo, Netherlands, in the Europe region.
How does Siebert & Wassink make money?
Three revenue lines are on record. Project-based Consulting is the primary driver. The others are salary Benchmarking and HR Advisory Services.
Does Siebert & Wassink have an API?
No public API is recorded for Siebert & Wassink.
What industry is Siebert & Wassink in?
Siebert & Wassink's product category is HR Consulting. Its primary akta.pro industry code is BPACAAAC, Technology & Product Leadership Search (CIO/CTO/CDO/CPO), with a secondary code of BPACAJAL, M&A HR Advisory (Due Diligence, Integration, Carve-outs). Its NAICS code is 56131 and its SIC code is 7361.