Advisor at BBKWmediation
| 2015-2022 | MfN registered mediator |
| 2010-2022 | IMI Certified mediator |
| 2009-2018 | Partner Van Nieuwenhuizen Partners, since 1/1/2015 named BosnakBender, since 1/1/2019 BBKWMediation. |
| 2003 | NMI certified mediator |
| 1997 | NMI-registered mediator |
| 1997-2009 | Partner/shareholder, 2006 Senior Counsel, CMS Derks Star Busmann Arnhem |
| 1987-1997 | Partner Winters and Bosnak Advocaten |
| 1980-1987 | Partner Bosnak Bender Sutorius Advocaten |
| 1975-1980 | Partner van der Tas advocaten |
| 1971-1975 | Lawyer at Dirkzwager advocaten Arnhem |
| Training | |
| 1996 – 2022 | Training and courses related to mediation |
| 1996 – 1997 | Two-year basic training in mediation, Centre for Conflict Management |
| 1969 – 1971 | Language specialist (Russian) School of Military Intelligence Harderwijk |
| 1962 – 1969 | Dutch Law University Leiden |
In the past John Bosnak was a member of the Board of Delegates of the Netherlands Bar Association and of the Supervisory Council of the Bar Association in the district of Arnhem. He participated in a working group of the Ministry of Justice on the enforcement of judgments in the European Union. He was on the board of the HAN University of Applied Sciences at Arnhem-Nijmegen and was a member of the supervisory board of an international trade company. He acted as in-house lawyer for a local construction company for 10 years. He practiced (Dutch) law in Düsseldorf for 10 years. He was chairman of the international CMS Practice Area Group on Dispute Resolution and of the Dutch Association of Mediation Lawyers, of which he is now an honorary member. He was a board member and later a member of the Advisory Council of the Netherlands Mediation Institute (NMI), the predecessor of the MfN. He was involved in the preparation of the implementation of the EU Mediation Directive in the Netherlands as chair of the NMI's working group on legislation. He was a member of the Board of the International Legal Institute in The Hague. From 2002 to 2020 he was active as a lecturer in ADR at the professional training programme of the Bar Association, from 2013 as head lecturer.
In the course of his career John Bosnak published on the European Mediation Directive, on private international law, procedural law and mediation-related topics.
He has lectured in the Netherlands and abroad about mediation and the role of lawyers in this process.
He has often acted as a jury member and mediator in the Commercial Mediation Competitions, organized by the International Chamber of Commerce in Paris.
Confidentiality and privilege in Mediation: a Dutch perspective 2002. www.mediate/com/articles/bosnak.cfm
Principles of Dutch civil procedure, 2003 Kluwer Law International, International Civil Procedure, Shelby R.Grubbs, ed., p. 457-519
Court annexed mediation: the Dutch approach, 2007, lecture for ABA
Commercial mediation -general and the attorney’s role, 2007, lecture for various audiences
The European Mediation Directive: More Questions Than Answers, 2011, Kluwer Law International, ADR in business, practice and issues across countries and cultures, vol.II, chapter 29 (p. 625-656)