Tim Griffiths


Bringing over 30 years Supply Chain, Business Improvement and Capital Project experience, Tim has been director of Cl for 12 years and successfully established two (2) other consulting firms during that time. Six Sigma Black Belt trained, Tim provides a no-nonsense approach to improvement, coupled with global Supply Chain and Project experience, Tim heads up the Cl team and organisation.

John Edwards

Senior Advisor

A successful recruitment and labour hire professional John has a long history of Supply Chain activities across Australia and globally. In recent years John ran the successful ProcureNet Labour Hire and Recruitment company in Queensland and has sound knowledge of the labour industry. John leads Cl’s People element and coupled with an extensive database of resources, can help support your organisation in building the right team.

Henk de Vos

Business Manager – WA
/ Senior Consultant

Throughout his 30-year career, Critical Input Senior Consultant and WA Business Manager Henk de Vos has worked for some of Australia’s leading companies in both domestic and global supply chain roles. Equipped with an MBA, Henk has successfully designed and delivered strategic transformational projects across multiple business sectors including: resources, engineering, construction, aviation, utilities, light and heavy manufacturing and defence and financial services. His work has seen him achieve a dynamic balance between sustainable cost-savings and process improvements across supply chain and broader business functions.

Chris Bevin

Senior Consultant

Chris has worked in mining, resources, infrastructure and energy project management for nearly two decades – both in Australia and overseas, on site and in corporate roles. She’s recognised for her balanced judgement, adaptability and commitment to meeting strategic outcomes.
She uses common-sense, innovative thinking and management skills to lead people and achieve project goals. In addition to being an Australian Institute of Project Management (AIPM) Certified Practising Project Manager and her international equivalency, Chris holds an MBA and is currently completing her Masters in Project Management.

Tom Whiting

Senior Consultant

Tom is a master of internal and external stakeholder engagement. He’s worked as a project professional in Australia and overseas for 15 years. His background in global energy, coupled with his experience in the emerging alternative energy sector have made him an expert when it comes to planning, sourcing and executing multi-billion-dollar projects in rapidly changing industries with challenging environments.
Tom is a firm believer that people, not balance sheets, build projects and that success comes from having the right team and tools for the job. Tom holds an MBA from Durham Business School and is a Project Management Institute-certified Project Management Professional.

Mark Smith

Senior Consultant

Having worked on large mining contracts in both Australia and overseas for more than a decade, Mark is a supply chain expert. He’s highly experienced in overseeing contracts on load-and-haul, drill-and-blast explosives and exploration drilling. By combining a “hands-on” approach with clever procurement strategies, Mark helps clients optimise operational efficiency.

Tim Garland

Senior Consultant

Tim is an experienced Category Specialist with a demonstrated history of working in the mining and information technology industries. Skilled in Negotiation, Procurement, Business Process Improvement, and Supply Chain Management, Tim has a versatile approach and well suited to CI’s team environment.

Adrian Calligaris

Senior Consultant / Business Manager

Adrian is an experienced commercial lead working with owners teams, EPCMs, consultants and all tiers of contractors in the mining, oil and gas and construction industries. Highly proficient in strategy development, negotiations, cost management, change management and contractor management ensuring effective completion and delivery of projects, well suited to CI’s Supply Chain process and service offering.

Steph Cush

Project Officer

Steph joined Critical Input in 2017, bringing her warmth, adaptability and willingness to roll her sleeves up and get the job done. Originally from country New South Wales, Steph loves adventure and isn’t afraid of change. She moved to Canberra to complete her communications degree, after which she set off for a stint in London. Upon returning, Steph followed some friends to Brisbane where she fell into project support work and has thrived in the field ever since. Steph loves working on projects due to the variety they bring, and the fact she’s always learning something new. Steph is a great team player who brings a practical approach to her work and thoroughly enjoys developing new connections on each project she works on.