0800-100-399 reception@genera.co.nz
Meet the Team

Mark Greenwood

Founding Director

Mark Greenwood established Genera in 1975 and was awarded an Order of Merit in 2016 for services to biosecurity. Mark grew up on a farm and retains a strong connection to the land, his passions include cricket, farming, kiwifruit and his forestry block.

Mark Self


Genera CEO Mark Self has over 30 years’ experience in primary industries. Formerly a scientist, forester, regulator, farmer, analyst and specialist biosecurity consultant, as CEO for the Genera group Mark oversees provision of fumigation, pest control and biosecurity services throughout New Zealand and Australia as well as providing governance, management and technical oversight to our businesses in Fiji, New Caledonia and Thailand. Marks leadership of Genera focusses on fostering a culture of integrity and innovation and he takes a very hands on approach to development of new technology. Mark has degrees from of The University of Canterbury and University of Queensland.

Matt Hill

Chief Operations Officer (COO)

As Chief Operating Officer, Matt’s key responsibilities include operational performance, customers and key relationships, IS/IT, HR and the Genus Business.

Matt has more than 20 years’ experience in leadership, general management, sales and marketing, HR and supply chain/logistics. Matt has a Bachelor of Forestry Science and a Bachelor of Commerce in Human Resource Management and Marketing. Matt is a Board trustee at Mt Manganui Primary School and enjoys spending time with his family, ocean swimming and triathlon.

Grant Nordstrom

Operations Manager – Nelson


I joined Genera  full time   approx 14 years ago and underwent training to become a qualified technician and then moved up to Area co ordinator.There  are two of us working in  Nelson ,myself and Nigel who has also been here approx. 13 years . We do a variety of work including Pest control containers /phosphine ships , mainly in the  south island working closely with Barry at the Wellington Branch.

Gavin Smales

Operations Manager – Napier


Gavin joined Genera in April 2011 at the Auckland branch as a Pest Management Technician.  Over a period of time Gavin underwent training to become a qualified Biosecurity Technician. Gavin’s career with Genera took a huge turn when he was asked if he would consider moving to Napier to run this division.  Initially Gavin was there on his own but as time has gone Napier has grown into a team of 10 permanent staff, with Gavin being the Operations Manager (and still enjoying the new challenges that come with the position).

The Napier division has the luxury of a wide variety of biosecurity and pest management jobs to do. They fumigate export logs, import export containers, as well as export apples to Japan. They also carry out phosphine applications for stored product pests in grain silos.  There is a small portion of commercial pest management jobs however, we envisage this area to grow the longer we are here.

Gavin’s plan is to continue to develop the team so they are competent to do a variety of tasks in all aspects of daily operations; this will keep variety within the roles, a better understanding of the business and enable cover in Napier and help out the rest of our teams around the country and overseas.

Kevin Brightmore

Operations Manager – Northport


Kevin has been employed by Genera Ltd for the past 5 years and has a total of nearly 25 years in the Fumigation and Pest Management industry.

His role as Operations Manager of Genera Northport is a varied one which often sees him working out in the log rows with the  team offering support and man power where and when it is needed. Kevin’s role also extends to being, Mother, Father, Marriage Councillor, ATM machine and other such roles as required! Communication is important in this role to ensure that the team and all contractors work together to get fumigated cargo to the ships on time.

Marsden Point is a natural deep water channel which can accommodate all types of shipping.  From log ships to bulk carriers, to the oil tankers that service the neighbouring Marsden Point Oil Refinery.  Not to mention the hundreds of sport fisherman who can vouch for the plentiful fish and all year round comfortable climate.  Just ask Kevin and he may give up a great fishing spot for you!

In the past year, there has been substantial growth in fumigated cargo leaving Northport, and known as a ‘finishing’ port, this division has a larger customer base than other ports.  With this in mind, the port authority is continually making provision for greater log storage areas.  They currently have three operating berths and expansion is planned for additional berths in the near future.

Although the hours are great and the conditions sometimes unfair, the rewards for the job are high.  Kevin’s unique management style reflects in the level of respect his team have for him and the amount of effort they all continue to put in.

Brendan McDunphy

Operations Manager – Auckland


Brendan has been working with Genera Ltd. in Auckland since 2009. Previously he worked at Ports of Auckland for two years with BioVapor NZ establishing and developing Heat Treatment which has been operating as a joint venture with Genera Ltd. since 2009. Brendan is a fully qualified biosecurity technician (Controlled Substance Licence and Approved Handler) with over ten year experience in the biosecurity industry.

He manages an expanding team in Auckland which provides a range of MPI accredited biosecurity quarantine and pre-shipment treatments across various sites throughout the Greater Auckland Region.

Our diverse treatment services include fumigation of export & import breakbulk lumber/timber/cargo, fumigation of export & import containerised goods, fumigation of export & import fresh produce (HCN & Methyl Bromide), ISPM-15 treatment of export & import  timber (fumigation & heat), chemical free heat treatment of import vehicles and empty containers at P.O.A., Thermo-Fogging of export commodities (lumber & scrap metal), Pestigas Treatment of export timber to Australian DAFF Standards during the Arhopalus Flight Season and Recapture of methyl bromide gas.

We work very closely with MPI, P.O.A., Stevedores, Logistics Companies and Importers/Exporters (or their agents) to achieve compliant biosecurity treatments in a timely and cost effective manner.

Genera Ltd. is a very innovative and forward thinking company with a strong emphasis on Health & Safety. We will always do our best to provide a biosecurity solution to meet our customers’ requirements and needs.

Barry Whitaker

Operations Manager – Centreport Wellington


Barry joined the Wellington division of Genera in 2010.  Working from a small portacom on the port, battling the winds that Cook Strait creates for Wellington, and as they say “you can’t beat Wellington on a good day; but you can on a bad one.”  The fumigation site has the most exposed spot on an already exposed port so working outside has its challenges.

Although based here on his own, Barry works in closely with the Nelson team, Grant and Nigel, to cover all the phosphine ships in Wellington, Timaru, Port Chalmers and sometimes Lyttelton.  Barry also fumigate and recapture containers on port as they arise.

Barry’s other role is compliance; this is of huge importance to make sure Genera operates within MPI boundaries and that all of our Biosecurity Technicians follow our procedures to the letter.  To ensure these are followed through communication is key and Barry travels throughout the regions carrying out random checks to satisfy himself that the needs are being met.

Barry is further proof of how flexible (and accommodating) Genera workers are as has also been aboard three log ships on trips to Korea and China which (overall) he reported that he enjoyed, but it isn’t for everyone.  Barry had plenty of time to work out the meaning of life and read all those books he never got to read, however it asks a lot of those close to you who don’t see you for almost a month.

Barry is a devoted Wellingtonian but would love to move the city closer to the equator if he could.

Bull Allen

Manager Genus


Bull joined the team in 2012, and is now the Manger for Genus; the pest management division of Genera.   Some recognize him from rugby days gone by. Bull’s time in professional Rugby taught him the importance of working as a team. And here at Genus, they are very fortunate to have a great team

Bull’s role is to support the Genus technicians, sales and admin team, and ensure they continue to provide the best service possible for our clients. The Genus team covered Northland, Auckland, the beautiful Bay of Plenty, Waikato, Hawkes Bay, Taranaki, Wellington, Wanganui, Wellington, Nelson Christchurch and the lower South Island.

The team in the Bay of Plenty consists of four technicians Dave, Jason, Shaun and Daniel who have over 50 years’ experience between them.  With the BOP being our ‘hub’, the very able administration staff, Wendy and Tracey, are on hand to meet all the requirements and demands of busy technicians and clients.  Keeping the momentum going in sales is the Sales and Account Manager, Fiona.  Fiona is based in Hamilton and covers Auckland, Waikato and The Bay of Plenty.  Supporting her in this region, are four technicians, Zac and Kane (Waikato), and Mike and Ritesh in Auckland.

With their highly skilled and experienced team they can set up sites and ensure continued compliance. They also meet one off job needs; consulting and putting effective pest management programs in place for anything that crawls, flies, swims or walks.

Genus believe in investing in their team to continue to provide outstanding, and up to date service for their clients.