Glynn Hayston, Finance Expert in Johannesburg, Gauteng, South Africa

Glynn Hayston

Management Consulting Expert

Johannesburg, Gauteng, South Africa
Toptal Member Since
May 16, 2022

Glynn is a project, culture, and operational risk consultant who leads large-scale change efforts, such as a reduction of 24% in insurance premiums and an 82% reduction in LTIs at a 200,000 BPD refinery in Turkey. His career spans large multinational companies like Anglo-American, Vale, Saudi Aramco, Ernst and Young, and DuPont. He is passionate about translating strategy and intention into action, bringing systems and processes alive to deliver value in challenging stakeholder environments.

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Career Highlights

Senior Consultant
DuPont Sustainable Solutions
Senior Manager
Ernst & Young


Honors Degree
University of the Witwatersrand
Master's Degree
Gordon Institute of Business Science

Case Studies

Image of Driving Culture Change Through Institution of Rituals and Routines project
Driving Culture Change Through Institution of Rituals and Routines
LeadershipChange LeadershipChange ManagementCulture DevelopmentOperational Risk Management
Image of Program Governance Model Development project
Program Governance Model Development
GovernanceStakeholder AnalysisStakeholder EngagementContract ReviewProject Review
Image of Strategic Sourcing and Defect Elimination project
Strategic Sourcing and Defect Elimination
Cost Reduction & OptimizationProcurementSourcingCreative Problem SolvingSix SigmaVendor Management


ComplianceControlsGovernanceOperating ModelsOperational Risk ManagementOperationsProcess ImprovementProgram Assurance

Work Experience

2013 - 2021

Senior Consultant

DuPont Sustainable Solutions
  • Implemented a nine-month $850,000 single engagement that transformed into a three-site $2.8 million program of projects.
  • Integrated work with the client’s internal operating model deployment project, resulting in a 52% reduction in LTIs and a 15% improvement in schedule compliance.
  • Led a $6.1 million multi-year process safety management implementation project at a 200,000 BPD refinery. The project reduced incident rates (78% reduction in LTIs) and saved 24% on insurance premiums. Rolled out work to three refineries in total.
  • Oversaw the development of contractor management systems at a multinational oil and gas company. Outcomes include a 60% reduction in LTIFR rate, improved contractor relationships, and a 23% improvement in contractor retention.
Focus areas: Operational Risk Management, Operating Models, Change Management, Compliance, Contract Review, Creative Problem Solving, Cost Reduction & Optimization, Controls, Culture Development, Change Leadership, Functional Specifications, Governance, Request for Proposal (RFP)
2006 - 2013

Senior Manager

Ernst & Young
  • Served as program governance lead on owner’s team of a ZAR 22.5 billion capital project.
  • Drove improvement in the level of compliance with regulatory standards and internal procedures, resulting in a 70% reduction in non-compliance within two years.
  • Developed the first of its kind capital project critical control framework and capital project gate review audit methodology.
  • Acted as the program lead for a multi-year capital project audit program directing a team of 12 consultants.
  • Rolled out a framework on over ZAR 50 billion worth of projects in an ambitious and challenging program of projects within the public sector.
  • Reviewed projects across SHE, procurement, project controls, project management, and governance focus areas. Contract renewed for four years running.
Focus areas: Program Assurance, Process Improvement, Finance Process Improvement, Governance, Compliance, Controls, Construction Estimation, Contract Review, Business Evaluation, Audits, Auditing, Tax Compliance, Corporate Governance, Projects, Project Review, Procurement, Procure to Pay, Customer Relationship Management (CRM), Request for Proposal (RFP), Request for Information (RFI)
2003 - 2007

Intermediate Engineer

Hatch Africa
  • Initiated and expedited rapid upgrade and rollout of a new version of the internal project administration suite. Upgraded 500 users in one week, including stakeholders, risk assessment, testing, disaster scenario development, and mitigation plans.
  • Led the development of process and instrumentation diagrams (P&IDs). Orchestrated design change process post HAZOPs.
  • Provided single point interface to all other disciplines, including mechanical, piping, electrical, and process for the instrumentation team.
  • Managed the instrumentation team after the team leader left the company at the end of the design stage. Oversaw 25 contractors during construction, commissioning, and ramping up, with all snag lists completed before handover.
  • Developed project costing models and work breakdown structures in support of the ZAR 35 billion capital expansion program.
Focus areas: Design, Implementation, Construction Estimation, Engineering, Process Control, Automation, Procurement, Customer Relationship Management (CRM), Request for Proposal (RFP), Vendor Management


1997 - 2021

Honors Degree in Electrical Engineering

University of the Witwatersrand - Johannesburg, South Africa

2011 - 2012

Master's Degree in Business Administration (MBA)

Gordon Institute of Business Science - Johannesburg, South Africa