Ronald Marasigan de Castro

Regional Sales Director & Project Manager  |  Flow Measurement & Industrial Instrumentation

Auckland, New Zealand

About

Chemical engineer, sales director and project leader with 20+ years across flow measurement and industrial instrumentation. Grew a regional business from US$300K to US$6.7M (41% CAGR over nine years), building it from the ground up to a successful acquisition. Has planned and delivered projects end-to-end — from proposal and scoping through execution, commissioning and handover — managing budgets, multi-disciplinary teams, suppliers and client stakeholders to on-time, on-spec outcomes. Track record of pioneering first-to-market technologies and winning strategic multi-year contracts. Now based in Auckland and seeking to bring this instrumentation and project-delivery expertise to ANZ industries.

Experience

  • Emerson | Flexim (Full-time · 10 yrs 10 mos)
    • Regional Sales Director - Middle East and Africa
      Apr 2024 - Feb 2026 · 1 yr 11 mos

      •  Delivered 76% YoY revenue growth in FY25. •  Led post-acquisition integration of the local team into Emerson Measurement Solutions, ensuring cultural and operational alignment. •  Architected the regional go-to-market and sales strategy across the MEA region, directly driving end-customer engagements, partner relationships, and consistent order closures.

    • Regional Sales Director - Middle East | General Manager of Dubai Office
      Oct 2019 - Apr 2024 · 4 yrs 7 mos

      •  Built Flexim’s Middle East operation from scratch into a full-function business (proposals, sales, business development, channel, order management, field service, after-sales), culminating in its acquisition by Emerson in 2023. •  Managed project delivery end-to-end — overseeing proposals, scoping, order management, field service, commissioning and after-sales — coordinating internal teams, suppliers and client stakeholders to deliver on time and to specification.

    • Regional Sales Manager - Middle East | General Manager of Dubai Office
      May 2015 - Sep 2019 · 4 yrs 5 mos

      •  Championed the regional shift to clamp-on ultrasonic flow technology, significantly expanding market penetration and product adoption against entrenched traditional technologies.

  • KROHNE Group (Full-time · 4 yrs 8 mos)
    • Area Manager
      Apr 2013 - Apr 2015 · 2 yrs 1 mo

      •  Delivered 440% sales growth in Saudi Arabia (2014) versus the prior five-year average — about 50% of the region’s annual revenue that year. •  Won major strategic contracts, including a 4-year magnetic-flowmeter purchase agreement with MARAFIQ-SAUR. •  Leveraged global Honeywell collaboration to increase volume in Saudi Arabia, adding ~23% to regional turnover. •  Secured multiple regional technical firsts with Saudi Aramco, SABIC, NPCC, Petrofac and Weatherford — first OPTISONIC 7300 gas ultrasonic meter at Saudi Aramco; first OPTIMASS Coriolis meters into Bahrain and the KSA chemicals sector. •  Built and led a self-sufficient ME proposals and project team managing quotations, order handling and full project execution; personally ran site services, commissioning and project management to ensure on-time, on-spec delivery and customer satisfaction.

    • Proposals Supervisor
      Jun 2011 - Mar 2013 · 1 yr 10 mos

    • Proposals and Applications Engineer
      Sep 2010 - May 2011 · 9 mos

  • Solvochem FZCO-Dubai (Dubai, United Arab Emirates)
    • Development and Marketing Manager
      Dec 2009 - Aug 2010 · 9 mos

      •  Expanded the product portfolio and client base, securing strategic partnerships with COIM and LINSCAN to unlock new revenue streams; led technical optimization projects for 3M (Scotch-Brite) and Falcon Chemicals.

    • Business Development Engineer
      Nov 2008 - Dec 2009 · 1 yr 2 mos

    • Sales Executive
      Sep 2007 - Oct 2008 · 1 yr 2 mos

  • Sales Executive at The Kanoo Group
    Feb 2006 - Aug 2007 · 1 yr 7 mos

    Sold gas detection, PPE and fall-protection systems; prequalified KERMEL fire-resistant clothing with GASCO and new UVEX eye-protection designs across ADNOC subsidiaries.

  • Petron Corporation (Full-time · 3 yrs 9 mos)
    • Field Technical Services Engineer
      Nov 2002 - Dec 2005 · 3 yrs 2 mos

      Drove technical sales of specialty fuel additives across marine, manufacturing and power industries; won the first major marine fuel-additive contract (Aboitiz Transport) and long-term accounts with Negros Navigation and Duracom Mobile Power.

    • Technical Assistant
      Apr 2002 - Oct 2002 · 7 mos