Filip holds director positions at two boutique consultancies: Negotiation Evolved and Praxis Advisory. He has advised organisations on billion dollar negotiations, coached hundreds of executives across 44 countries, and contracted his services to a dozen specialised negotiation service providers. Filip has taught 450 in-person negotiation programs for 15,000 participants from government, military, law enforcement, judiciary, intelligence, NGOs, and business. He maintains current accreditation with two law enforcement hostage negotiation accreditation bodies, accreditation in mental health first aid, and he has volunteered as a suicide hotline crisis supporter. Additionally, Filip has himself attended over 100 negotiation and crisis negotiation related programs around the world taught by government, law enforcement, academic, and private sector negotiation providers. All this combined puts Filip in a unique position to evaluate the available approaches to negotiation, and to provide an informed perspective on what works and what doesn't.

Filip's courses are primarily offered via Negotiation Evolved and Praxis Advisory. Different versions of Filip's negotiation programs have also been selected by top-tier academic institutions, and by law enforcement and military academies, in 15 countries across the Americas, Europe, Middle East, Asia and Oceania. Australia's Department of Defence has incorporated Filip's training into multiple training continnums. As adjunct professor in the faculty of decision sciences at INSEAD, Filip has taught in 47 executive programs, primarily Negotiation Dynamics (ND). At the Royal Institute of Governance and Strategic Studies (RIGSS) in Bhutan, Filip's negotiation training was incorporated into five of the Senior Executive Leadership Programs (SELP) and Military Leaders Strategic Studies Seminars (MLS). Indian School of Business (ISB) contracted Filip to run 17 of his executive programs primarily marketed as Mastering the Art of Negotiation and Influence (MANI) and Strategies for Effective Negotiation (SEN). Filip's training was also incorporated into the Mid-Career Training Programme (MCTP) for the National Police Academy (NPA) in India. The Australian Graduate School of Management (AGSM) contracted Filip programs to run 100 of his executive programs, primarily marketed as Advanced Negotiation and Influencing (ANI) and Developing Effective Negotiation Skills (DENS). Macquarie Graduate School of Management (MGSM) contracted Filip to run 30 of his negotiation programs to executive, MBA and MoM participants. At University of Technology Sydney (UTS) Filip taught negotiation across the university to executive, EMBA, MBA, MBITM and undergrad participants. And finally, thematic versions of Filip's courses are sporadically offered via professional membership organisations, e.g. ACS, HKAPI, IACCM, MFA, PRIA, TEC and YPO.

Filip has contributed articles to INSEAD Knowledge, some of which have been republished elsewhere, e.g. in CEO Magazine. You can find a snapshot of Filip's insights on negotiation in his 2013 book, Negotiation Evolved. He has over the last decade researched and written two more unreleased books on crisis and hostage negotiation, with input from two dozen crisis negotiation experts across the globe.