Jonathan is a senior civil and environmental engineer with over 20 years’ experience, working exclusively in the field of solid waste engineering.  Jonathan’s experience encompasses design and construction supervision of general, industrial and hazardous waste landfill developments and barriers, design and construction supervision of waste facility capping barriers and stormwater management facilities, design incorporating geosynthetic materials including specifications and construction quality assurance and design and construction supervision of landfill gas extraction, conveyance and destruction systems. 

Jonathan's experience up until 2017 has been in South Africa and Africa, where he has been involved with numerous landfill projects until he immigrated to New Zealand in 2018.  Since joining Tonkin + Taylor, Jonathan has been involved in the design of expansions on domestic waste landfills in New Zealand.

Jonathan was appointed as Secretary to the International Geosynthetics Society Technical Committee on Barriers in September 2018.