Tarnia Riggs – consultant, writer and founder of multiple brands including Myriad Ardor and LGBT Weddings & Events Australia
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Whether it's a project, contract opportunity or professional collaboration, feel free to get in touch.

Professional Profile
Principal Consultant | Project Advisory | Corporate Affairs | Strategic Communications | Stakeholder Engagement

Renewable Energy | Transport | Rail | Mining & Resources | Water | Government | Health | Social Infrastructure

Strategic consultant with 15+ years’ experience helping organisations deliver complex infrastructure, energy, government, mining, transport, health and major capital projects across Australia and the United Kingdom.

My career spans project advisory, governance, corporate affairs, strategic communications, stakeholder engagement, organisational change, social impact, business operations and project delivery. Rather than specialising in a single discipline, I bridge strategy, governance, project delivery, corporate affairs and stakeholder engagement to help organisations navigate complexity, manage risk and deliver better outcomes.

Recognised for translating complex technical, operational and organisational challenges into practical strategies that strengthen governance, stakeholder confidence, organisational capability and successful project delivery.

Trusted to support executive leadership teams, government agencies, Tier 1 consultancies and multinational organisations on politically sensitive and high-profile programs, providing strategic advice, governance support, executive communications, stakeholder management and organisational improvement throughout the project lifecycle.

Experience includes establishing new organisational functions, improving governance, supporting project mobilisation and close-out, coordinating multidisciplinary teams, designing systems and strategic frameworks, mentoring staff, and translating complex technical, operational and policy challenges into practical, human-centred solutions.

My experience spans organisations including EnergyCo NSW, BHP, SA Health, CPB Contractors, Aurecon, AECOM, GHD, Woods Bagot, Melbourne Water, Rail Projects Victoria, the Department for Infrastructure and Transport and government agencies in both Australia and the United Kingdom.

Career Highlights
  • 20+ years’ experience leading organisational improvement, strategic advisory, governance, stakeholder engagement and project delivery across banking, government, infrastructure, renewable energy, transport, mining, health and major capital projects.
  • Experience spanning the full project lifecycle from planning and feasibility through delivery, operations and project close-out.
  • Trusted to support executive leadership, Ministers, government agencies, delivery partners and multidisciplinary teams across complex, politically sensitive and high-profile programs.
  • Delivered strategy, governance, stakeholder engagement, communications, organisational change and business improvement initiatives for government agencies, Tier 1 consultancies and multinational organisations.
  • Published industry author, with articles featured in Utility magazine supporting stakeholder engagement and communications for the EnergyCo NSW Renewable Energy Zones (REZ) program.
  • Received formal commendation from Hobsons Bay City Council and the Williamstown Chamber of Commerce for leading innovative and highly effective stakeholder and community engagement during Melbourne Water’s Williamstown Sewer Rehabilitation Project.
  • Commercial and operational leadership foundation in banking, finance and business operations, leading organisational change, governance improvements and business process redesign across public and private sector organisations, including the London Borough of Camden, Fujifilm UK and Woods Bagot. Delivered new policies, procedures and credit application processes, trained national and international leaders and teams, transformed an underperforming national credit portfolio, and recovered more than $1.5 million in aged debt while strengthening governance, operational performance and client relationships.
Core Capability Areas
Strategy & Advisory
  • Strategic advisory
  • Governance
  • Business improvement
  • Executive support
  • Organisational change
Project & Program Delivery
  • Project coordination
  • Project mobilisation & close-out
  • PMO support
  • Risk & issues management
  • Cross-functional collaboration
Corporate Affairs & Engagement
  • Corporate affairs
  • Strategic communications
  • Stakeholder & community engagement
  • Government relations
  • Media & reputation management
Research & Social Impact
  • Social Impact Assessment
  • Social planning
  • Community research
  • ESG
  • Stakeholder insights
Leadership & Operations
  • Team leadership
  • Coaching & mentoring
  • Process improvement
  • Digital systems
  • Business operations
Credentials
Education
  • Graduate Certificate in Project Management (2022)
    University of South Australia GPA 5.66 / 7 (80.85%) Distinction
  • Bachelor of Management (Marketing) (2016)
    University of South Australia GPA 5.16 / 7 (73.71%) Top-performing marketing cohort Ehrenberg Bass Institute
  • Certificate IV in Entrepreneurship & New Business
  • Certificate IV in Small Business Management
  • Certificate IV in Management
  • Certificate IV in Real Estate Sales & Marketing
  • Certificate III in Travel (SIT30122) (In Progress)
Professional Development
  • IAP2 Australasia – Engagement Academy
  • IAP2 Australasia – Engagement Essentials
  • IAP2 Australasia – Facing Conflict
  • IAP2 Australasia – Facilitate Engagement (2025)
  • Project Management MAP
  • Conflict Resolution
  • Presentation & Stakeholder Management (Master Builders)
Certifications & Clearances
  • White Card – Work Safely in the Construction Industry (CPCCWHS1001)
  • National Police Clearance (Current)
  • NDIS Worker Clearance
Selected Awards & Recognition
  • Integrated Marketing Award – Stock Price
  • Integrated Marketing Award – Net Income
  • Selected for the Ehrenberg-Bass Institute Marketing Project
  • Commendation from Hobsons Bay City Council and the Williamstown Chamber of Commerce for delivery of the Williamstown Sewer Rehabilitation stakeholder engagement program.
Technical & Digital Capability
Project & Stakeholder Systems
  • Darzin
  • Simply Stakeholders
  • Consultation Manager
  • Aconex
  • SharePoint
  • Microsoft 365
  • Qualtrics
  • CRM platforms
Research & Analysis
  • Qualitative & quantitative research
  • Survey design & analytics
  • Stakeholder insight & reporting
  • Social Impact Assessment
  • Community profiling
  • Data interpretation
Creative & Digital
  • WordPress
  • Elementor
  • Adobe InDesign
  • Adobe Illustrator
  • Canva
  • Adobe Premiere Pro
  • Buffer
  • Isentia
  • HTML/CMS
Selected Major Project Experience
SectorRepresentative Projects
Energy$45.7B BHP Olympic Dam Growth & BAU Program • $1.2B EnergyCo Renewable Energy Zones • SAPN Internal Communications
Education$8.8B School Infrastructure NSW
Health$7.2B COVID-19 Vaccination Program • $1.8B Royal Adelaide Hospital PPP
Transport$30B Rail Projects Victoria • $15.4B North–South Corridor • $200M ARTC Inland Rail • $190M Princes Highway
WaterMelbourne Water – Williamstown, Maribyrnong, M41 & North Drop Structure
Government Department for Infrastructure & Transport • UniSA International • South Road Superway
Additional Perspective

I bring a globally minded, commercially aware and culturally informed perspective shaped by experience across Australia, the United Kingdom, Europe and the Middle East.

Known for connecting strategy with delivery through authentic communication, practical leadership, and strong relationship management, I enjoy building capability, improving systems, and translating complexity into practical outcomes that create lasting value for organisations, projects, and communities.

Top Skills

Project Advisory • Project Delivery • Governance • Corporate Affairs • Strategic Communications • Stakeholder Engagement • Government Relations • Organisational Change • Social Impact • Executive Support • Business Improvement

Advisory, Social Planning & Research
Advisory social planning and research services for infrastructure government and energy projects by Tarnia Riggs
Strategic advisory and research services combining stakeholder insight, social planning and evidence-based analysis to support informed decision-making across infrastructure, government and energy projects.
Change Management & Transformation
Change management and transformation strategy for infrastructure, government and corporate projects by Tarnia Riggs
Supporting organisations through change, transformation and operational transition across infrastructure, government and corporate environments through communication-led change management, stakeholder engagement and workforce alignment.
Media & Digital Strategy
Media and digital strategy services for infrastructure energy and government projects by Tarnia Riggs
Media and digital strategy specialist delivering content, campaigns, executive communications and proactive media engagement across infrastructure, renewable energy, government and corporate environments.
Project & Program Support
Project and program support services for infrastructure energy and government projects by Tarnia Riggs
Project and program support specialist experienced in coordinating communications, stakeholder engagement, reporting and delivery support across complex infrastructure, energy and government programs.
Social Impact Assessment (SIA)
Social Impact Assessment and community research services for infrastructure and energy projects by Tarnia Riggs
Experienced in Social Impact Assessment, stakeholder research and community analysis for infrastructure, renewable energy and government projects, translating complex social insights into practical project and engagement outcomes.
Stakeholder & Community Engagement
Stakeholder and community engagement services for infrastructure, government and energy projects by Tarnia Riggs
Stakeholder and community engagement specialist experienced in infrastructure, transport, energy and government projects, delivering consultation, communications, workshops and engagement strategies that build trust and support project outcomes.
Strategic Communications
Strategic communications and stakeholder engagement for infrastructure, energy and government projects by Tarnia Riggs
Strategic communications specialist delivering stakeholder engagement, media strategy, executive communications and digital content across infrastructure, renewable energy, government and major project environments.
All Projects
All projects overview showing infrastructure, government, energy, buildings, and community projects within a circular gold border
A multidisciplinary portfolio of infrastructure, energy, government, transport, water, health and community-focused projects delivered across Australia and the UK.

Let's Connect

Whether you're seeking strategic communications support, stakeholder engagement expertise, project advisory services, writing, collaboration opportunities or simply want to start a conversation, I'd love to hear from you.