Guidance for the Journey That Matters Most
Any major technology transformation is a journey. Success depends not only on the system chosen, but even more on how well your organisation prepares, confidently navigates the path ahead, manages surprises (good and bad), and how effectively your project sustains momentum when challenges arise.
Peritia was founded on a simple principle: organisations achieve better outcomes when they are supported by others who have walked this path before.
Our team brings extensive, real-world experience across technology selection, ERP implementation, and enterprise transformation. We work alongside executive leaders and project teams from early preparation through to delivery and adoption, helping organisations make sound decisions, avoid common pitfalls, and stay aligned with their intended destination.
Like a well-planned ascent, successful transformation begins with strong preparation. Then, with the right guidance, a clear path, and steady support along the way, organisations can move forward with confidence and realise the full value of their investment.
With the Peritia team by your side, you can be assured you’ll reach your summit.
Our Team
Greg Smith
Technology Transformation Specialist
Greg is a highly regarded transformation leader who supports organisations through complex system implementation and digital change. With a background as a CIO and Technology Director, he brings extensive executive-level experience across ERP, financial systems, and enterprise platform programmes.
He has led and advised major initiatives across government and commercial organisations in New Zealand and internationally. His experience enables him to quickly assess programme health, identify emerging risks, and guide teams toward practical decisions that protect delivery and long-term outcomes.
Greg works closely with executive sponsors and project teams as an independent, trusted advisor. His impartial perspective helps organisations make well-informed decisions, maintain realistic expectations, and ensure vendors and delivery partners remain aligned with business needs.
He is particularly valued for his ability to recognise when programmes are drifting off course and to calmly reset direction. His presence brings clarity, confidence, and stability to complex environments.
Greg provides the experienced guidance, independent perspective, and steady leadership that organisations need to navigate technology complexity and transformation and to achieve successful, lasting outcomes.
Hamish Crombie
Programme & Delivery Leader
Hamish is an accomplished programme and delivery leader who helps organisations translate complex transformation goals into structured, achievable programmes of work. He brings more than 25 years of experience across business leadership, programme management, and enterprise change.
Hamish has led major ERP and digital transformation initiatives across both corporate and government environments, establishing clear delivery frameworks that support steady progress and effective governance.
Known for his pragmatic and measured approach, Hamish provides calm leadership in complex environments. He works closely with organisations to establish realistic plans, align stakeholders, and maintain momentum throughout delivery, ensuring transformation progresses with clarity and confidence.
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Karen Gourley
Finance Systems & ERP Specialist
Karen is a finance and ERP specialist with extensive hands-on experience supporting organisations through finance system implementation and transformation. She brings particular expertise in Microsoft Dynamics 365 Business Central and complex finance environments.
A qualified management accountant with more than 20 years’ experience, Karen has worked across public sector, private sector, and not-for-profit organisations. She understands the operational realities of finance teams and ensures systems are designed and implemented to support real-world workflows.
Karen provides practical leadership across process design, testing, and data migration. She works closely with finance teams and delivery partners to ensure systems are not only implemented successfully, but also understood, trusted, and embedded into daily operations.
Cassie Amesbury
Business Change, Analysis & Planning Specialist
Cassie supports organisations with their preparations through structured planning, business analysis, and change coordination across complex transformation programmes. She brings strong capability in impact assessment, stakeholder alignment, and programme planning.
Her experience spans ERP implementations and multi-workstream initiatives across both public- and private-sector environments. She helps establish clarity across programmes, ensuring stakeholders understand the path ahead, and delivery remains well coordinated.
Cassie is known for her thoughtful and methodical approach. She uses visualisation and structured planning techniques to break down complexity, enabling informed decision-making and supporting steady, well-managed progress.
Sam Morton
Finance & Systems Transformation Specialist
Sam is a Chartered Accountant with extensive experience across financial management, ERP implementation, and systems transformation. She supports organisations through the selection, implementation, and optimisation of finance systems, ensuring solutions align with operational and governance requirements.
Her background includes working closely with boards, executive leaders, and operational teams across logistics and multi-entity environments. She brings a strong understanding of financial governance alongside practical operational insight.
Sam helps organisations navigate procurement, data migration, and process improvement, ensuring systems function effectively and deliver lasting operational benefit. She is known for her clear communication, practical mindset, and ability to translate complexity into structured, workable solutions.
Sacha McGregor
Change Management & Adoption Specialist
Sacha supports organisations through software rollouts by designing and delivering both the change and training required for successful adoption. Her approach incorporates structured change management practices alongside practical, hands-on training and adoption support, ensuring new systems are not only implemented, but fully understood and embedded.
She works closely with project teams and stakeholders to prepare organisations for change, supporting stakeholder engagement, communication planning, readiness preparation, and user adoption.
Sacha designs and delivers practical learning programmes including eLearning, video content, workshops, user guides, and champion support networks. She specialises in translating complex system functionality into clear, accessible experiences that build confidence and capability across the organisation.
Her work helps organisations reduce resistance, accelerate adoption, and realise the full value of their technology investment. The resources and approaches she develops continue supporting organisations long after go-live, strengthening capability and supporting future growth.