Mark Semmens


Mark is a Chartered Accountant and a Registered Tax Agent, with a wealth of experience in taxation and compliance services. Mark also has experience in insolvency, where his career in the accounting industry began. Mark specialises in all areas of tax and advocates utilising cloud software solutions.


  • Chartered Accountant 
  • Registered Tax Agent 
  • Bachelor of Commerce Majoring in Accounting & Finance 
  • VCE at Wesley College
Daniela Semmens

General Manager

IT Portfolio, Programme, Project Specialist.

Daniela has a wealth of experience in project, programme and portfolio management, specialising in the delivery of business intelligence, big data and analytics projects. Focusing on people, processes and technology, Daniela also provides consultancy and leadership in technology solution selection and implementation.


  • P30 Practitioner (Projects, Programs and Portfolio Establishment)
  • ITIL Foundations
  • Agile Fundamentals


  • Projects, Programs and Portfolio Management
  • Agile and waterfall delivery 
  • Big Data and Analytics systems implementation
  • Business Intelligence systems implementation 
  • Field Sales & Operations
  • Banking and
  • Government

Thoughts From Our Principals

Mark Semmens

Mark is a Chartered Accountant with a wealth of experience in accounting and taxation. Mark is a Member of Chartered Accountants Australia and New Zealand, the Tax Practitioners Board and the National Tax and Accountants Association.

Mark's blogs
Daniela Semmens

Daniela Semmens is a Co-Director of Semmens & Co. and joined the company as General Manager in 2017. Daniela is an Affiliate Member of Chartered Accountants Australia and New Zealand and also a Member of the Australian Institute of Project Management.

Daniela's blogs

Contact Us Today

For any enquiries into our team or our services please contact Semmens & Co. via email at or call us on 03 8320 0320

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