Founding Director

Josko Sestan is the Founding Director of Radicall Limited. Having owned a number of businesses both here and in Australia. Radicall is a culmination of those experiences which included establishing a Payroll Service company in Australia, being a Business Consultant delivering Document Management Solutions. Gaining skills in the disciplines of software programming, installing client/server software, affecting business change management, training end users, providing project management and delivering complex solutions on time and within budget for some very prominent and demanding clients. Josko grew up in Auckland, New Zealand. He graduated from Massey University with a Post Graduate Diploma in Business Administration to formalise his business experience. Josko combines his business understanding with his passion for helping other business owners get the best service and products and in a partnership to achieve business success.


Business Consultant

Dennis Curin is a qualified Management Accountant who has worked in and owned New Zealand businesses in various commercial environments over the last 20 years. These have included businesses in manufacturing, wholesaling, retail and service sectors. Through his Consultancy Company he has worked with and advised many business owners on profit improvement strategies and techniques on maximizing the saleable value of their businesses. He fully understands the business environment and the key factors that drive potential business buyers. He is proud to bring a high quality business acumen, expert advice and professional approach to Radicall Limited.


Technical Advisor

An NZ independent telecoms professional with over 15 years telecoms experience. Simon is based in Auckland and has built an excellent reputation for engineering and maintenance, Simon has expertise and understanding of complete telecoms solutions built specifically around customers requirements. With highly trained engineering and maintenance teams, as a experienced telecom advisor expert in his field, Simon aims to deliver excellent service and quality assurance surpassing that of competitors. Simon prides himself in understanding kiwi businesses needs and requirements when it comes to telecommunications. With a heavy focus on service and support, Simon & Radicall is 100% committed to partnering with businesses to develop and implement effective telephony solutions.