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President & CEO
John Zahary



John Zahary is a Professional Engineer with extensive senior management experience.  He graduated with a M.Phil in Management Studies degree from the University of Oxford and a B.Sc in Mechanical Engineering degree from the University of Calgary.  His experience includes upstream oil and gas companies involved in heavy oil, oilsands, light and medium oil and natural gas production as well as companies with downstream, refining, marketing and midstream assets. 

He has worked in technical, financial and corporate leadership roles including serving as President & CEO of Viking Energy, Harvest Energy, Petrovera Resources and Sunshine Oilsands.  Corporate experience includes publicly traded companies listed in Canada, USA and Hong Kong as well as private companies and international companies with an interest in the Canadian oil and gas upstream industry, infrastructure development and purchasing commodities for export to markets with growing demand like Asia. 

Outside involvements include Board of Director positions with a number of private and public companies including Frog Lake Energy, an oil company owned by Frog Lake First Nation with significant working interest production of heavy oil, as well as other companies currently and in the past.  Volunteer activities include Chairman of the Rhodes Scholarship Selection Committee for Western Canada as well as other interests. 

John joined Altex in July 2014 and looks forward to contributing to the growth of Altex.  


Chief Operating Officer
      Aaron Bishop



In his role as Chief Operating Officer for Altex, Aaron is responsible for the overall functional leadership and management of Operations.  He is responsible for ensuring that Operations, Business Development, Project Execution and HSE, support Altex's overall corporate strategic plan.

Aaron is a Professional Engineer and holds a Bachelor of Science in Chemical Engineering from Dalhousie University along with a Bachelor of Science in Chemistry from Mount Allison University.  He has extensive experience in the oil and gas industry, having worked in the upstream, downstream, onshore and offshore sectors.  Prior to joining Altex, he has worked in technical and corporate leadership roles with Imperial Oil and Encana.

When away from the office, Aaron is an Instructor at the Schulich School of Engineering at the University of Calgary and previously was an Adjunct Professor at Dalhousie University in the Masters of Petroleum Engineering Program. Aaron enjoys spending time with his family, sailing, hockey and soccer.

He is the co-inventor of Altex's CDN patent #2,829,003.



Director, Finance & Accounting
      Colleen Johansen

colleen johansen


Colleen Johansen is a Chartered Accountant who brings a broad range of financial reporting and corporate development experience to Altex. A "Big-4" accounting firm alumni with public accounting and industry experience, Colleen has also been involved in performance management, corporate finance, and business development for more than a decade, and brings this background to her role leading Altex's accounting group.

Colleen graduated "summa cum laude" from Saint Mary's University in Nova Scotia, where she earned a B.Comm with a double major in accounting and finance. She began her career in KPMG Calgary's Corporate Audit group, where she led engagements for a wide range of clients and industries, including infrastructure and energy. After obtaining her CA designation, taking a short secondment to KPMG Cairns in Australia, and earning a promotion to manager, she transitioned into industry where she worked for a publicly listed independent power producer in both the accounting and corporate development groups prior to joining Altex in 2014.

During her initial years at Altex, Colleen was a key member of the business development group, with the majority of her time focused on project work, commercial negotiations, contracting, and financial modelling and analysis. After assisting with Altex's more complex accounting issues, Colleen was promoted to Director, Finance and Accounting in early 2017.



Linda Cantlay

Linda HS


Linda is a Chartered Accountant (“CA”) who holds a Commerce Degree in Accounting from Concordia University. She commenced her accounting career with Price Waterhouse Coopers, where she progressed through the firm to reach the position of Manager, Owner-Manager Services. After seven years, she left public accounting to pursue a career in the private sector.

In the private sector, Linda held the position of Controller for various companies, including Oxbow Canada which employs rail to transport sulphur, as they progressed through their start-up and development stages. During her 20 year career in the private sector, she was employed as a financial consultant, controller and functional analyst.

In July 2012, Linda joined Altex first as a consultant and then in September, 2012, as Controller. At Altex, she is responsible for all accounting functions as well as the majority of the treasury functions. Linda is constantly working to improve and advance the company’s accounting and reporting functions as it continues through a period of rapid growth. As controller and in support of her role’s deliverables, she works closely with Altex’s bank, external auditors (year-end and quarterly reporting) and the Board of Directors and Shareholders. Altex has progressed significantly to in improving corporate governance by implementing controls, budgeting processes and financial reporting requirements including IFRS with goal of achieving the standard reporting requirements of a public company.



Director, Sales, Transportation & IT
Curtis Layton


  Curtis is currently the Director of Information Technology and Logistic at Altex Energy. Curtis joined the Altex organization in 2013 with more than 17 years of experience in all aspects of Information Technology including system development, computer operations, networks, architecture and strategic planning. Curtis has a Bachelor’s of Science Degree in Electronic Engineering Technology and a Master’s Degree in Information System Management.

Prior to joining the Altex organization, Curtis was an IT leader for Canada and Latin America region for Sensors and Devices, a division of Honeywell, where he was responsible for strategic IT initiatives such as business acquisitions, data center consolidation, SAP/ERP implementations, cost management, and software development. During Curtis’ tenure at Honeywell, Curtis worked closely with the Logistics and Operational organizations focusing on software development initiatives as continuous improvement efforts. These continuous improvement efforts significantly improved efficiencies in data acquisition, data mining, manpower and overall system functionality.

As a result of Curtis’ extensive experience with software development initiatives, Curtis joined Altex Energy to develop a software package that would revolutionize Altex’s Oil on Rail business. Successfully releasing the first iteration of the software in 2014, this new software has contributed to an improvement in customer relations, data accuracies, and operational efficiencies. Curtis enjoys helping individuals, teams and the overall company to develop to their full potential through results-driven strategic planning, accountable workplace execution, effective communication, customer satisfaction and a commitment to excellence all around.