Executive Team


Simon Warner | Managing Director


Simon is a qualified corporate manager with experience in a range of senior executive roles. Simon has held Director positions with SEQ Catchments, the Port of Brisbane Corporation, Bulk Terminals Australia, Australian Bulk Alliance, and Grainco Australia Limited Subsidary Companies.

Damien Zeller

Damien Zeller | Chief Operating Officer


Damien’s worked in I.T. management and executive roles since the emergence of web for commercial software systems. Masters qualified in management, analysis and design, Damien is involved in defining the strategy and vision for Tactiv and working with partners, clients and staff to define and deliver the product roadmap for enQuire.

Nik Vassilev

Nik Vassilev | Chief Product Officer


Nik has worked on a number of large scale IT projects in the natural resources and finance industries, working closely with clients to understand their needs. Nik holds degrees in IT and Business from QUT, is a certified Project Management Professional and recently completed his MBA.

Kristina Frawley

Kristina Frawley | Chief Financial Officer


Kristina is a qualified financial manager with experience in a variety of sectors. Her previous positions include Chief Financial Officer at SEQ Catchments and Autism Cooperative Research Centre. She holds a Master of Commerce and is CPA qualified.

Jason Bradfield

Jason Bradfield | Chief Technology Officer


Jason came to Tactiv as a Senior Software Engineer in 2005 when the enQuire product was first developed. Since then Jason has taken the chief technology officer role and is responsible for leadership and innovation of technology, whilst aligning its software strategy and architecture to deliver customer value. Jason holds a Bachelor of Computer Science and is a current member of the Australian Computer Society.


Vance Reavie | Strategic Business Development


Vance has worked with commercial and government sector clients in managing web, internet and software development projects in Australia and worldwide. With a background in project management, Vance understands the challenges organisations face in adopting technology solutions to deliver sustainable performance improvements. Vance holds a Master of Public Administration.


Aleisha Caesar | Support Manager


Aleisha has over 20 years experience in customer service and management roles in a range sectors including Education, Health and Hospitality. She has substantial international experience having worked abroad including China, Japan, and Norway enhancing her ability to interact with clients and appreciate the value of communication in providing exceptional customer service. Aleisha is a keen ITIL practitioner and enjoys motivating and providing encouragement to her fellow Tactiv team members.