With more than 30 years of experience, Mr. Johnson acted as lender, equity provider, investment manager, legal and financial advisor and project developer before becoming an expert witness. He has significant experience analyzing, negotiating and managing major projects and their financing to determine full commercial impacts and their impacts upon valuation and project viability. Mr. Johnson has acted as both a quantum and financing testifying expert witness for commercial and investment treaty matters.

Mr. Johnson has worked with clients across various industries, including construction, energy, infrastructure, mining, oil and gas, power, real estate, tourism, shipping and transportation, and telecommunications.  He has worked on public private partnerships (PPPs), including reviewing modelling for finance-based projects and acting as an expert on matters related to the structure of project financing and the impact on financing and returns. Mr. Johnson has provided documentation for PPPs, presenting on them, leading training internally and externally, and dealing with procurement. 

Mr. Johnson has lived and worked for extended periods in the United States, Costa Rica, Dominican Republic and Spain and has worked on matters in over 100 countries in total. 

Mr. Johnson earned an MBA from the University of Warwick, a diploma in international communication (Spanish) from the Institute of Linguists and a law degree from Nottingham University. He is a Fellow Chartered Certified Accountant (FCCA), a Member of the Energy Institute, and serves as the Chair of the Energy Arbitration Club. Mr. Johnson is fluent in English and Spanish, and speaks (to different degrees) Portuguese, French and German.