Meet The Team

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The experts at AJSS collectively bring over 400 years of experience to the table.

Our technical team at AJSS are Rotating Equipment specialists and are regularly called on by our customers to provide recommendations and troubleshoot any issues relating to their ongoing projects. Technical Directors, Arthur Stack, Peter Hootsen and Bob Graf, continue to search for innovative and effective solutions to support client operations.


managing director

With almost 40 years of experience in the Marine, Oil and Gas and Power Generation industries, Arthur brings a mature mix of technical and business management skills, together with a strong network of industry contacts and exposure to global projects.

In this time he has spent 26 years working for Solar Turbines Incorporated in various technical and commercial roles of increasing responsibility. His most recent role was Regional Service Manager for Solar Turbines Australia from 1st January 2008 to 31st May 2013. In this role he assumed the Sales and Operations responsibility for all of Solars’ aftermarket business in Australia, New Zealand, and the Pacific Region.

While on assignment in San Diego, Arthur completed a Masters of Business Administration (Marketing Major) to compliment his Diploma in Professional Business. In addition to his business management qualifications Arthur spent 10 years as a multi-disciplined Gas Turbine Commissioning Engineer in both Oil & Gas Power and Generation markets.


AJSS was formed by a team of multi-disciplined rotating equipment experts.



  • Alasdair Lee

    Training Director

  • John van Weel

    Non Executive Director

  • Wade Elofson

    Non Executive Director

  • Tom Chapman

    Non Executive Director

  • Michael Lihai

    Managing Director PNG

  • Vincent Namekat

    General Manager PNG


    Engineering Manager

  • Luis Starke

    Business Director

  • Damien Ford

    EEHA & Quality Manager

  • Craig Boston

    Technical Manager SA

  • Anthony Ryan

    Business Manager WA

  • Kenny Tachimoto

    Senior Rotating Equipment Engineer

  • Matt Rotstein

    Digital Content Manager

  • Ray Taylor

    Engineering Consultant

  • Paul Novacco

    Engineering Consultant

  • John Dewar

    Engineering Consultant

  • Neil Walters

    Senior Field Engineer

  • Murray Wigg

    Senior Field Engineer

  • Alison Robb

    HR and Training Manager

  • Natalee Nahoom

    Financial Accountant

  • Beau Wignall

    Field Service

  • Eric Konie

    Field Supervisor PNG

  • Bryan Edwards

    Global Instructor

  • Dwain Lindon

    Field Service

  • Sahaj Garg

    Tech Lead : Snr Software Engineer

  • Dane Lui

    Digital Content Developer

  • Mark Stone

    Field Service

  • Jim Smith

    Senior Technical Trainer

  • Gavin Sinclair

    Field Service

  • James Stack

    Rotating Equipment Engineer

  • Farbod Rahimi

    Rotating Equipment Engineer

  • Justin Roth

    Rotating Equipment Engineer

  • Mido Ogail

    Rotating Equipment Engineer

  • Stephen Muehlenberg

    Digital Content Developer

  • Daniel Abbott

    Business Analyst

  • Max Tolliday

    Engineering Intern

  • Lisa Nelson

    Office Administrator

"Certainly recommend AJSS..."

"One thing that really impressed me about Arthur and the team at AJSS was their attitude to customer feedback and continuous improvement – always striving to better and deliver customer satisfaction"

Senior Rotating Equipment Engineer

"Your facility and setup were of the highest standard..."

“Your people, without exception were friendly and professional. Your facility and setup were of the highest standard and the attention to detail was exemplary”

Senior Project Manager

"I can honestly say this was the best learning experience..."

“I can honestly say this was the best learning experience I have had for a long time. The information was relevant and delivered in an engaging way by industry experts that have actually been there and done the things they are teaching. Far from death by power point with the ability to answer questions in detail. To anyone in the oil/gas/chemicals space working with turbines and compressors I highly recommend AJSS.”

Process Team Leader

"I learned so much from your experts..."

“The training was informative and varied I learned so much from your experts. I now feel that I can really apply the knowledge to my day to day work in the field”

Graduate Rotating Equipment Engineer