Ola Mellgren

Enterprise and Solution Architect with more than 25 years' experience translating organisational goals into executable change across healthcare, government, mining, energy and defence. Aligns capabilities, operating models, information and technology with investment priorities to produce target architectures and transition roadmaps that improve services, reduce risk and deliver measurable outcomes.

Principal Enterprise Architect at WA Health (2026-07 – Present)

• Designed the target architecture for WA Health's External User Authentication capability, replacing fragmented service-level approaches with a shared model supporting the secure and equitable expansion of digital health services.
• Worked with WA Health Legal and the State Solicitor's Office to resolve longstanding ambiguity around representative authority and mature-minor access, translating the legal constraints into traceable requirements and design decisions.

Principal Enterprise Architect at Erity Pty Ltd (2026-02 – 2026-07)

AI venture builder focused on mining exploration, professional services and infrastructure.

• Built Erity's enterprise architecture function, applying the TOGAF ADM across business, data, application and technology domains.
• Reduced architecture delivery cycles from months to weeks by applying large language models across the architecture lifecycle.
• Authored target architectures for security, IAM, information governance and risk, including a Zero Trust network pattern adopted across all data centres.
• Advised executives on portfolio strategy and AI governance.

Enterprise Architect at FromHereOn @ WA Health (2024-02 – 2026-02)

WA Health serves a 2.5-million-km² jurisdiction – larger than Western Europe and four times the size of Texas.

• Designed the architecture for the WA Health Virtual Emergency Department, delivered ahead of schedule and under budget, contributing to a 27% reduction in ambulance ramping and enabling sub-30-minute virtual consultations.
• Reduced critical clinical communication turnaround by 30% through a role-based clinical messaging capability.
• Led enterprise architecture for the State Health Operations Centre (SHOC), aligning clinical operations, technology, and information flows statewide.
• Secured CxIO endorsement for a standards-based method to rationalise WA Health's entire application portfolio (retain, integrate, retire), and oversaw its execution in support of the enterprise EMR program.
• Set architectural direction for a statewide patient transport service, producing procurement-ready specifications for its Computer-Aided Dispatch capability.

Solution Architect at BHP (2023-01 – 2024-02)

World's largest mining company.

• Governed solution architecture across BHP's External Affairs portfolio, aligning initiatives with enterprise roadmaps and standards.
• Designed global cross-functional solutions and earned BHP's License to Architect.

Strategic Architect at Woodside Energy (2021-08 – 2023-01)

Australia's largest independent oil and gas company.

• Designed cloud and SaaS solutions for ~30 strategic initiatives, with a focus on lifecycle cost and TCO.
• Designed analytics capabilities for price and shipping optimisation, and cloud solutions for project scope and workforce skill management.

Program Architect at BroadReach Consulting (2020-09 – 2021-08)

• Designed an Azure migration for approximately 1,500 applications across the WA Police Force and DPIRD, improving resilience and reducing operating costs.
• Defined service-level monitoring standards and KPI frameworks.

Senior Architect at Department of Transport, WA (2019-07 – 2020-08)

• Designed the integration of the National Driver Licence Facial Recognition Solution into WA's licensing systems.

Lead Architect at IBM @ Water Corporation (2018-02 – 2019-07)

• Led a team of 10 architects through Water Corporation's transition to a service-oriented, hybrid-cloud operating model.

Senior Solution Architect at Landgate (2017-08 – 2017-11)

• Re-platformed Landgate's e-commerce stack on AWS, replacing legacy systems with a service-based architecture.

Solution Architect at WA Health (2016-06 – 2017-08)

• Establishment of WA's new dedicated children's hospital.
• Designed the architecture for outpatient appointments, electronic wayfinding, clinical dictation, and pharmacy automation for the hospital's opening.

Enterprise Architect at FromHereOn @ UWA (2015-10 – 2016-06)

• Established the University of Western Australia's enterprise architecture function and authored its ICT strategy.
• Facilitated stakeholder workshops and trained staff in strategic planning practices.

Solution Architect at INPEX (2015-06 – 2015-10)

Ichthys LNG is one of the world's largest energy projects.

• Provided architecture services across 12 Ichthys LNG sub-projects.

Senior Project Consultant at WA Health (2014-04 – 2015-04)

• Designed WA Health's smartcard-based identity and access platform, integrated with its Enterprise Service Bus.
• Defined role-based access controls and the supporting lifecycle management processes.

Application Architect at Serco @ Fiona Stanley Hospital (2011-10 – 2014-04)

• Accountable for the architecture of all non-clinical systems supporting the hospital's 28 non-clinical service lines, from real-time location and robotic delivery to RFID and smartcard-based parking and payments.

Technical Manager & Solutions Architect at ATCO Gas (2010-03 – 2011-10)

• Led the delivery of a service-oriented monitoring and meter validation platform spanning ATCO's 13,700 km gas distribution network.

Solution Architect, Pre-Sales & Project Manager at Thales (2001-06 – 2009-12)

Aerospace, defence, security, and transportation.

• Secured $180M in contracts, delivering service-oriented solutions for government and defence customers.
• Led solution design for the Australian Army's Hawkei vehicle, Northern New Zealand's smartcard fare collection system, the WA Dept. of Transport's number plate system, and the Sydney Ferries infotainment platform.
• Held Australian Defence SECRET clearance; ITAR-trained Technology Control Officer.

Technical Leader & Software Engineer at ERG Group (1999-03 – 2001-06)

• Smartcard-based automated fare collection for transit.
• Led the security workstream for ERG's Singapore smartcard ticketing system, including the design of its cryptographic components.

Manager & Senior Software Engineer at System Art (1998-10 – 1999-03)

• Managed the delivery of client-server management information systems on the Microsoft stack.

Consultant Mechanical Engineer at HBH Consultants (1996-10 – 1998-10)

• Designed industrial machinery and process equipment for clients, including Hamersley Iron, Alcoa, and Worsley Alumina.

Production Engineer at Clarecraft Industries (1995-04 – 1996-10)

• Designed and commissioned furniture production lines and programmed 5-axis CNC machining.

M.B.A. in Strategic Management & Economics – Lund University

B.Sc. Eng. in Innovation Engineering – Halmstad University

Graduate Diploma in Computing – Curtin University