arete, (GR: ἀρετή) – Excellence, of the highest quality

Quality assurance, delivered on time and built to last.

Consulting and interim management for quality assurance in medical devices, pharmaceuticals and biotechnology.

Get in touch

Introduction

Hi, I am Matthias

Portrait of Matthias Rönsberg

My professional expertise has several facets: one scientific and mathematical, one economic, one technical, and one multicultural. I have always been fascinated by science and mathematics, so I decided to study chemistry and subsequently obtained a university certificate in business administration.

Already during my chemistry studies I expanded my computer and IT knowledge out of personal interest. At that time the internet was just starting and access was only possible via university computers. In 1995 I had my first own computer (a Mac Performa 5200) and my monthly phone bill for the dial-up fees to the university was regularly over 100 DM 😉

Science, maths and technology would be enough for many. But since I have a talent for languages and like to travel, I voluntarily learned Spanish during my chemistry studies with the goal of spending a semester abroad in Spain — and that is exactly what I managed to do. I speak English and Spanish fluently and now have a basic knowledge of other languages, which makes communication in multicultural teams much easier.

Professionally, I now have the great fortune of being able to combine all of my interests and passions. I enjoy challenging scientific and technical projects in different countries and multicultural teams. I have a wide range of interests, think very analytically, am great at mental arithmetic, read several books a month, and regularly continue my education.

Summary

How I work

QA projects are usually urgent and often idiosyncratic. Many companies then need external resources to support their own team. I am your expert to execute your QA projects on time, efficiently and safely. My focus is on sustainability: where possible and desired, I establish new processes instead of just solving the acute problem ad hoc.

Thanks to my many years of experience across a wide variety of projects, I quickly learn the ropes and am your proactive collaborator from the very beginning. I take stock, move into planning, and am not afraid to ask questions of any kind. Knowing the stumbling blocks and challenges, I work in a goal-oriented and efficient way to deliver a reliable result on time. I am also happy to take on project management and team leadership tasks.

Services

What I deliver

  • Qualification / validation, especially CSV, incl. DQ, IQ, OQ, PQ
  • Team leadership and project management
  • GxP, GAMP 5
  • Audit trail, data integrity, 21 CFR Part 11, EU GMP Annex 11, data migration
  • Documentation: writing and revision of SOPs including flow charts (MS Visio)
  • Complete life cycle of:
    • Validation Plan (VP)
    • System Assessment (IA)
    • Supplier Assessment (SA)
    • User Requirements (URS)
    • Functional Requirements (FS)
    • Risk Assessment (RA)
    • Traceability Matrix (TM)
    • Test Plan (TP)
    • Test Cases (TC)
    • Test Report (TR)
    • Validation Report (VR)

Projects

Engagements

  1. Since 07/2025

    CSV / Automation, Biotechnology

    Sr CSV / Automation Expert · Daiichi Sankyo, Pfaffenhofen, DE

    Commissioning, qualification and validation of process control systems. Planning, monitoring and implementation of qualification and validation incl. VP, RA, URS, DQ, IQ, OQ, PQ. Coordination with stakeholders (business, IT and QA).

  2. 06/2025 – 09/2025

    CSV of Excel for quality control

    CSV Expert · Beiersdorf, Hamburg, DE

    Creation of validation documents (VP, RA, URS, TP, TC, TM and VR).

  3. 09/2024 – 06/2025

    SOP harmonisation, validation of laboratory systems

    Sr CSV Expert · Merz Aesthetics, Frankfurt, DE

    Creation of validation documents (VP, RA, URS, TP, TC and VR). Lead of the SOP harmonisation project: analysis of the existing SOP landscape, revision of existing SOPs, creation of new SOPs, coordination with stakeholders (business, IT and QA).

  4. 04/2024 – 07/2024

    Validation / automation of filling lines

    Validation Project Lead · Procter & Gamble, Frankfurt, DE

    Creation of validation documents (VP, RA, URS, TM, DIA, VR). Development and validation of the data flow. Creation of SOPs. Training and guidance of the QA team.

  5. 09/2023 – 02/2024

    Remediation Project — Data Integrity Audit Trail

    QA Audit Trail Expert · Alvotech, Reykjavik, IS

    Update of the audit trail review process. Training and guidance of the QA AT team. Support for the Win 10 / Win 11 GxP rollout.

  6. 06/2023

    Qualification of high-purity media

    Qualification Expert · Ferring GmbH, Kiel, DE

    IOQ of high-purity media.

  7. 03/2023 – 07/2023

    Team Lead — Operational Technology

    Head of OT and IT · AmpTec (Merck KGaA), Hamburg, DE

    Establishment, implementation and maintenance of qualification and validation processes for GMP-compliant system operation. Support with deviations and changes.

  8. 05/2022 – 04/2023

    Qualification of production and filling lines

    Qualification Expert · Vet Pharma (MSD), Friesoythe, DE

    Design qualification (DQ, URS, FRS, FAT, SAT) and commissioning. Risk assessments as well as IQ, OQ and PQ. CSV in cooperation with IT and process automation.

  9. 03/2022 – 05/2022

    Data Integrity — packaging equipment

    Qualification Expert · Catalent, Schorndorf, DE

    Evaluation of the data integrity of packaging plants (solid dosage forms) and derivation of recommendations for action.

  10. 08/2021 – 04/2022

    Project Management — Equipment Qualification

    Qualification Expert · GSK, Dresden, DE

    Project management for the qualification of new laboratory equipment. Full CSV lifecycle considering GxP, 21 CFR 11, Annex 11.

  11. 01/2021 – 12/2021

    Program Lead Win10 Lab

    Project Manager CSV · Sanofi, Frankfurt, DE

    Coordination of the Win 10 rollout to 100+ lab systems and corresponding validation activities per GAMP 5, 21 CFR 11, Annex 11, GMP. Focus on data integrity (gaps, risks, mitigation and remediation).

  12. 01/2021 – 09/2021

    CSV Engineer

    CSV Lead Expertise · Alvotech GmbH, Hannover, DE

    Ensuring GMP compliance (Annex 11, GAMP 5 etc.). Implementation, maintenance, monitoring and improvement of relevant SOPs. Maintaining a validated state of computerised systems.

  13. 09/2020 – 10/2020

    Equipment FAT

    Automation Engineer · MSD Ireland, Carlow, IE

    Review of test documentation created by suppliers. Execution of the equipment FAT. Review and approval of the qualification documentation.

  14. 06/2020 – 08/2020

    CSV Team Lead (Automation)

    Senior CSV Engineer · Biogen, Solothurn, CH

    Oversight and execution of CSV activities. Creation / revision of test documentation. Implementation of the global CSV program.

  15. 11/2019 – 08/2020

    CSV / Automation

    CSV Lead Expertise · MSD AH Danube Biotech, Krems, AT

    Review and approval of supplier-provided test documentation. Support for management of software FAT execution. Development of high-level SDLC documentation (QAPs, QASRs etc.).

  16. 09/2018 – 12/2019

    Project Management IT / CSV

    IT CSV Project Manager · Ethicon, J&J, Norderstedt, DE

    Identification of IT-dependent systems and project management. Production IT systems: ERP/JDE, MES, Labeling, LIMS, interfaces. Change management: coordinating changes, defining resources.

  17. 08/2019 – 10/2019

    CSV Project Management

    CSV Expert · Mucos Pharma, Berlin, DE

    Gap assessments and development of a mitigation plan. Assessment of global SOPs and transfer of applicable SOPs to the local QMS. Validation of computer systems.

  18. 01/2018 – 03/2019

    IT System Management and Validation

    Validation Specialist · Novartis, Basel, CH

    Coordination of validation activities for laboratory systems. Writing SOPs, change management, qualification and migration. Performing IQ, OQ and PQ.

  19. 11/2017 – 12/2018

    CSV database

    CSV Project Manager · Octapharma, Hanover, DE

    Creation of the validation plan, UFRS, RA, TRM, VR (Annex 11). Training and development of team members.

  20. 02/2016 – 12/2017

    Computer System Validation & Equipment Qualification

    Interim Manager CSV · Vet Pharma (MSD), Friesoythe, DE

    Validation of laboratory equipment and the associated software. Performing data integrity assessments and supplier qualification.

  21. 02/2017 – 05/2017

    CSV QlikView BI Dashboard

    CSV Validation Officer · Boehringer, Dortmund, DE

    Creation of requirement specifications and test cases. Review and revision of technical documentation (ISO 13485).

  22. 08/2015 – 12/2015

    Technical Documentation, Quality Management

    Technical Writer · DePuy Synthes, Balsthal, CH

    Document change control / versioning. Creation and maintenance of Quality Progress Reports & QSM Reports.

  23. 04/2015 – 08/2015

    Design & revision of master production records

    Medical Writer · Rentschler Biotechnologie, Laupheim, DE

    Creation and revision of manufacturing records. Revision of process flow charts (MS Visio).

  24. 03/2015 – 07/2015

    Computer System Validation, SAP BW

    Validation Officer · CSL Behring, Marburg, DE

    Initial risk assessments and validation plan per GMP Annex 11. Revision of change and test procedures.

  25. 04/2014 – 12/2014

    Retrospective CSV, legacy applications

    Project Manager · DePuy Synthes, Hägendorf, CH

    Leading a documentation team (4 staff). Retrospective validation of Access databases and Excel workbooks.

  26. 07/2013 – 12/2013

    FDA QSR — Legacy Management Reviews

    Quality Regulatory Consultant · Synthes, Mezzovico, CH

    21 CFR 820: Legacy Management Reviews. Presentation of quality risks and implementation of corrective actions.

  27. 06/2013 – 10/2013

    Computer System Validation, QlikView BI server

    Technical Writer · CSL Behring, Marburg, DE

    Development and execution of the validation plan per GMP Annex 11. Creation of DQ/IQ/OQ documents.

  28. 04/2012 – 04/2013

    Business Development Manager

    Project Management · Wick Hill GmbH, Hamburg, DE

    Preparation of business plans, analyses and forecasts.

Contact

Let's talk

If you are looking for a reliable QA manager to support you through difficult project phases with expertise and efficiency, feel free to get in touch by email.

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