Established in 1997 in Wellington, Integri-T is led by Principal Consultants supported by a team of over 80 highly-skilled and experienced Associate Consultants.

We have an established portfolio of clients across both private and public sectors and hold positions on a number of Government ICT consulting services panels.

Every client engagement requires its own unique combination of capabilities. We use our significant consulting resources to construct a tailor-made team for each assignment and ensure a good fit with our client’s needs.

Integri-T’s Principal Consultants are:



Geoff Lineham

Specialisation: Commercial, Strategic, Governance

Geoff is a founder and co-owner of the company with over 35 years in the industry with experience spanning both telco and IT infrastructure sectors.

He specialises in strategic consulting, procurement, commercial negotiations and government shared services, having led a number of significant procurement activities on behalf of large government and non-government clients – many involving multi-national vendors.

Geoff has significant project and programme management experience and brings this to bear to assist in quality review and as a governance advisor.


Simon Stew

Specialisation: Commercial, Strategic, Governance, Programme/Projects

Simon is a co-founder and owner of Integri-T and is jointly responsible for leading and developing the company. He has an enthusiasm for problem solving and an outgoing personality that enables him to connect with people from all parts of an organisation.

Simon has worked in the ICT industry in NZ and overseas for over 25 years and during that time he has gained extensive experience in ICT procurement, high-value and complex contract negotiations, business case development, project and programme management. Simon has a B.Eng. and an MBA in Strategy and Finance. He is also a qualified MSP (programmes) Practitioner.

+64 21 983 855 |

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Paul de Haan

Specialisation: Contact Centres

Paul has extensive experience in the contact centre arena developed whilst working in a variety of consulting, architecture, procurement, programme and project management roles in the ICT industry over 23 years.

He has broad experience in leading the transformation and refresh of contact centre systems and workforce; programme and PMO experience; line management, fiscal management; and a strong commercial knowledge and practice of service provision and supply contracts.  Through established relationships with most of the largest ICT vendors and services entities in New Zealand he can provide expert input into a range of disciplines of high-functioning contact centre and associated technology solutions.

+64 29 920 3558 |


Steve Manners

Specialisation: IT Service Management, Programmes, Commercial

Steve has more than 25 years’ experience in the ICT sector, leading IT functions, IT Professionals and strategic business programmes.  Steve’s experience spans large corporate, Government and niche sector companies and his capability for delivery has its foundation in service delivery, managing the high expectations of customers and meeting commitments made to them.

In addition to holding a Post-Graduate Diploma in Business Administration, Steve is a qualified performance coach and ITIL Master, his strong commercial skills have been developed through the management and execution of large procurement activity, in both the public and private sectors, the negotiation of outsource agreements and their focus on outcomes based delivery.

+64 27 670 0161 |


Simon Baxter

Specialisation: Service Design & Delivery, Strategic Portfolio Management, Contact Centres

Simon is the newest member of the management team, having joined in 2017, and adds further capability through his broad delivery and consulting experience gained in NZ, the USA, UK and Australia.  Simon’s wide range of skills and thought leadership draws on his extensive ICT experience in service portfolio, product development, sales and management roles and many years with the largest telcos in New Zealand transitioning large organisations to TaaS/AoG cloud services.
Specialising in portfolio creation, through defining and delivering sustainable ICT products and services to business stakeholders, Simon is a highly effective communicator. He is adept at shifting organisational culture and pace, encouraging the skilful use of DevOps, Agile and “new ways of working”; always with a focus on close fiscal management and great customer experience.

+64 27 526 5699 |