Employment Opportunities
Senior Estimator - SA - Thebarton

About Us:
Established in 2001, Guidera O’Connor (GO) is a privately owned and respected design and construct contractor and have a successful track record delivering water and wastewater treatment projects to the Australian Water Industry. Our clients include SA Water, Water Corporation, Sydney Water and SEQ Water. 

Our Opportunity:
An amazing opportunity now exists for an experienced Senior Estimator. This role will suit a highly motivated individual with a background in estimation, project management or engineering gained within the construction industry. Essential to your success in this role is adaptability and a solutions-focused approach to produce winning bids. This role requires experience in construction estimating and is unfortunately not suitable for a recent graduate.

If you are sick and tired of constant travel, then this could be the role for you. 

More specifically our Estimators are responsible for:

  • Forming and maintaining client relationships
  • Reviewing tender documents
  • Preparing tender submissions
  • Preparing delivery methodologies
  • Develop project cost estimates

To be successful in this role you will have:

  • Experience estimating within the construction industry.
  • Formal engineering or construction qualifications.
  • Well-developed communication skills coupled with strong problem solving and influencing skills.
  • Attention to detail and an ability to meet strict deadlines.
  • An affinity for with our Guiding Principles of Care, Integrity, Passion, Respect and Future

In return for your skills and experience, we offer you supportive colleagues and inspiring leadership; training & development opportunities; meaningful and interesting work all within a great culture and work environment.

Our amazing benefits include:

  • Flexible working arrangements
  • Office lunches provided
  • Additional annual leave for service milestones and 15 days personal leave
  • Excellent employee referral bonus
  • Regular celebrations our success
  • Company funded wellbeing program
  • Paid parental leave
  • Fortnightly pay


At Guidera O’Connor we respect and value a diverse, inclusive, and belonging workforce.  We strongly encourage applications from all people, regardless of age, sex, or culture.  In line with our RAP, we encourage applications from Aboriginal and Torres Strait Islander people for all positions.   

Please apply online but do feel free to contact Lesley Mackman via careers@goc.net.au for any further information.