Mark Hallowes has been involved in:
- Construction supervision
- Managing an engineering company as a 25% shareholder
- Procurement of work which included pricing of tenders
- Procurement of plant and materials for the company
- Marketing and installation of water saving devices
- Project and construction management of sanitation projects in Kwazulu Natal
- Project management of the R221 Million Nelson Mnadela Metro Bucket Eradication Programme.