/About
Who we are. What drives us.
BERTELPARTNER is an independent, owner-managed consulting firm based in Leverkusen.
We ran plants before we advised plants. We passed audits before we led them. That is the difference.
/Our Story
For over two decades in practice
2020
Phase 01
Lo
The Founding.
BERTELPARTNER GmbH is entered into the commercial register in Leverkusen.
Owner-managed, without software licenses, without commissions from certification bodies, without Big Four reporting structures. The goal: deliver advisory, audit and training for management systems the way we, as practitioners, always wished it had been delivered to us — committed, pragmatic, with fixed scope and fixed price.
2024/ 2025
Phase 02
Lo
The Build-Up.
From individual engagement to established partner of leading industrial clients.
The portfolio grows across six industries — automotive, rail, aerospace, energy, IT services and public sector. More than 120 clients served, from 10-employee SMEs to listed corporate groups. Over 1,200 audits per year in 30 countries. 100% first-time-pass rate for engagements we support end-to-end.
2026
Phase 03
The Future.
The regulatory world is becoming more complex. Our answer: even clearer.
ISO 9001:2026, NIS2, CSRD, TISAX 6.0.x, IRIS Rev. 04, ISO 14001:2026 — the wave of standard revisions is rolling. We are expanding: additional senior experts in information security and sustainability, additional accreditations with certification bodies, an extended training portfolio. But our stance stays the same: Plain talk over tactics.
/Our Story
For over two decades in practice
2020
Phase 01
Lo
The Founding.
BERTELPARTNER GmbH is entered into the commercial register in Leverkusen. Owner-managed, without software licenses, without commissions from certification bodies, without Big Four reporting structures. The goal: deliver advisory, audit and training for management systems the way we, as practitioners, always wished it had been delivered to us — committed, pragmatic, with fixed scope and fixed price.
2024/ 2025
Phase 02
Lo
The Build-Up.
From individual engagement to established partner of leading industrial clients. The portfolio grows across six industries — automotive, rail, aerospace, energy, IT services and public sector. More than 120 clients served, from 10-employee SMEs to listed corporate groups. Over 1,200 audits per year in 30 countries. 100% first-time-pass rate for engagements we support end-to-end.
2026
Phase 03
The Future.
The regulatory world is becoming more complex. Our answer: even clearer.
ISO 9001:2026, NIS2, CSRD, TISAX 6.0.x, IRIS Rev. 04, ISO 14001:2026 — the wave of standard revisions is rolling. We are expanding: additional senior experts in information security and sustainability, additional accreditations with certification bodies, an extended training portfolio. But our stance stays the same: Plain talk over tactics.
/Partnerships & Memberships
Rooted in the associations that set the standards.
We are active members in 10 national and international professional associations — from advisory federations through industry committees to audit accreditation bodies.
These memberships allow us to actively contribute to standard revisions — and to share relevant changes with you months before official publication.
ACS
American Chemical Society – internationaler Fachverband Chemicals
ASQ
American Society for Quality — global quality association, Six Sigma standards
BDLI
German Aerospace Industries Association — AAB body for EN 9100 audits
BDU
German Federal Association of Management Consultants — professional body for consulting firms
IAQG
International Aerospace Quality Group — global aerospace quality standards, EN/AS 9100 family
IHK
German Chamber of Industry and Commerce — business representation, recognized training organization
BVMED
German Federal Association of Medical Technology — medical devices and MDR/IVDR
DGQ
German Society for Quality — largest quality association in DACH, auditor certification
UNIFE
Union of European Railway Industries — European rail industry federation, IRIS standards
VDA QMC
German Association of the Automotive Industry — Quality Management Center, VDA 6.3 / 6.5 / Maturity Levels
/Our Stance
Plain talk over tactics
01/ People and Relationships
We care about people and personal relationships — open, trusting and respectful. With clients as much as within the team.
02/ Diversity in the Team
The more different perspectives a team brings together, the more good solutions emerge.
03/ Proactive Paths
We aim to go beyond the familiar and shape tomorrow with proactive solutions.
04/ Uncompromising Focus on Quality
Every audit document, every management system, every training is delivered so that it passes the next surveillance audit without findings.
05/ Agile and Networked
Autonomous, networked teams instead of long reporting chains. Fast and flexible.
/Contact us
When shall we talk?
Send us a message via the contact form – or call us directly. You will usually receive a reply within 24 hours.