Glynn Hayston, Finance Expert in Johannesburg, Gauteng, South Africa
Glynn is available for hire
Hire Glynn

Glynn Hayston

Verified Expert  in Finance

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.

Career Highlights

Senior Consultant
DuPont Sustainable Solutions
Senior Manager
Ernst & Young

Education Highlights

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

Case Studies

Work Experience

Senior Consultant

2023 - PRESENT
MAC group
  • Led a RAPID organizational design project, revamping key functions (strategy through logistics). Achievements include revamped strategies, mindset shifts, quick wins, org structures, capability maps, and service delivery models (using RACI, interfacing with business units).
  • Developed a PMO dashboard tool in Excel, which allowed visualization of a portfolio of projects across programs, subprograms, and projects. The tool is used for prioritization and sequencing of events to even out cash flow and resource requirements.
  • Used a value-driver tree approach to assist a mining team with a functional redesign of operations KPS for better cascade, and in the process, identified three quick wins that released 8% more output over a 4-week period.
  • Co-developed a new MAC Consulting Operating Model playbook.
Focus areas: Operating Models, Organization, Strategy, Functions, PMO, Business Process Re-engineering, Logistics & Supply Chain, Supply Chain Optimization, Excel 365, Functional Requirements, Safety, Key Performance Metrics, Capability Build-out, Organizational Strategy & Design, Digital Transformation, Organizational Design

Senior Consultant

2013 - 2021
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 (Cost-down), Controls, Culture Development, Change Leadership, Functional Specifications, Governance, Request for Proposal (RFP), PMO, Business Process Re-engineering, Supply Chain Optimization, Excel 365, Operational Risk, Safety, Key Performance Metrics

Senior Manager

2006 - 2013
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), PMO, Business Process Re-engineering, Logistics & Supply Chain, Excel 365, Operational Risk, Safety, Key Performance Metrics, Capability Build-out, Digital Transformation

Intermediate Engineer

2003 - 2007
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, Excel 365, Operational Risk, Safety, Key Performance Metrics
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


Finance Process Improvement, Cost Reduction & Optimization (Cost-down), Tax Compliance


Operational Risk Management, Program Assurance, Governance, Change Management, Project Review, Implementation, Audits, Corporate Governance, Projects, Vendor Management, Key Performance Metrics, Key Performance Indicators (KPIs), Safety, Operational Risk, Excel 365, PMO, Microsoft, Functional Specifications, Operations, Operating Models, Process Improvement, Compliance, Controls, Leadership, Change Leadership, Culture Development, Procurement, Automation, Request for Proposal (RFP), Request for Information (RFI), Organizational Strategy & Design, Capability Build-out, Strategy, Service Delivery Design, Functional Requirements, Business Process Re-engineering, Organizational Design, Design, IT Networking, Business Evaluation, Innovation, Marketing, Human Resources (HR), Stakeholder Analysis, Stakeholder Engagement, Contract Review, Sourcing, Creative Problem Solving, Six Sigma, Construction Estimation, Auditing, Procure to Pay, Engineering, Process Control, Customer Relationship Management (CRM), Supply Chain Optimization, Logistics & Supply Chain, Organization, Functions, Digital Transformation

Collaboration That Works

How to Work with Toptal

Toptal matches you directly with global industry experts from our network in hours—not weeks or months.


Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring