Leadership

Andrew joined WSG in 2018. He was initially with Halliburton prior to becoming a Director/Owner of an Oil & Gas equipment rental company HSL, part of the OHS group of companies, providing equipment to well service and pipeline & process service companies globally. This business was acquired by Air Liquide in 2015. In 2016 Andrew formed ATAM Group in the UK, focused on new innovative processes for the Pipeline & Process market, a company that is now part of WSG Energy Services.

Andrew is responsible to set strategy and manage delivery for WSG Process, Pipeline & Industrial Services growth globally, increasing geographic footprint and diversity of services.

Joining WSG in October 2020, John is tasked with supporting WSG Energy Services in its next phase of international growth expanding into new geographic territories and further increasing its service offering.

John has 30 years of industry experience, most recently holding CEO position within EnerMech following a number of years as COO overseeing its international expansion. Prior to this John worked for PSL Energy Services and Halliburton, spending 4 years in the Caspian region and 13 years in the Asia Pacific market focusing upon growing businesses in the LNG and Oil & Gas pre-commissioning and mechanical services markets.

Geert-Jan joined WSG as CFO in January 2024 after having worked with the company as its external corporate finance advisor as well as being on its Supervisory Board in the past. He has 20 years of experience in finance, strategy and M&A in various industries, including over ten years at PwC Corporate Finance, followed by over nine years at global HR services leader Randstad where he was lastly focused on Corporate Strategy and M&A.

Geert-Jan is responsible for the financial strategy, health, and actions of WSG as well as driving IT development and delivering (integration of) M&A.

Dan joined WSG in April 2022 and is responsible for all finance and tax matters as well as taking an active role in M&A activity.

Dan qualified as a chartered accountant whilst working for PwC and has over 20 years’ experience in senior financial positions across multiple sectors and industries. This includes 6 years working for listed businesses in the financial services sector and 8 years working for a Private Equity partnership with responsibility for transaction execution and portfolio management. Dan also has extensive senior finance experience across groups of software development companies operating within plc environments, including a business which specialises in the development of remote telemetry technologies for the Oil & Gas and Nuclear sectors.

Joining WSG in March 2021, John is tasked with supporting WSG Energy Services in its next phase of international growth expanding into new geographic territories and further increasing its service offering. John has held a number of customer-focused senior management positions throughout over 30 years of industry experience. These include roles as BD Director for PSL Energy Services, UK Manager Production Enhancement for Halliburton, and BD Director / founding partner of Enermech.

Koos co-founded Well Services Group in 2005 and has more than 30 years of experience in the oil and gas industry. Prior to WSG, Koos held positions with Otis (Halliburton) and BJ Services (now Baker Hughes).

Koos has a strong equipment and process knowledge and oversees our fleet globally to ensure all servicing and purchasing meets the required standards for our service delivery. He leads a number of initiatives, working with our clients to help us innovate and deliver additional efficiency and offer improved process safety.

Based in the Netherlands, Yolanda joined WSG in 2020, supporting the company to deliver continuous improvement across its QHSE department.

In 2024 Yolanda became Global QHSE Manager, ensuring that QHSE is at the heart of everything WSG does, with a vision to operate safely across multiple industries, globally, while driving quality and reducing the impact of our operations on the environment.

Steve brings with him a wealth of experience from his 20+ years in the PPS industry, having worked in management roles in Africa, Caspian, Asia, and the Middle East, latterly with EnerMech as Middle East and Caspian Regional Director before returning to the UK in a European General Management role. Steve’s technical knowledge comes from his time in the field, and he is acknowledged as a technical expert in Nitrogen & Helium Leak Detection services. His experience in delivering integrated services on large new build major hydrocarbon/LNG projects with major operators further strengthens our ongoing efforts to expand this sector.

In this position Steve has overall responsibility for all our Process, Pipeline and Industrial Services business units in the UK and Europe, targeting growth in both our new build construction and shutdown/turnaround service offering.

Harry joined WSG in 2018 tasked with developing our Pipeline & Process Services/Industrial Services business within Continental Europe. His oil and gas career began in 1990 with positions in A.Hak Industrial Services and then BJ Services. From 2005 to 2018 Harry directed A.Hak Industrial Services European business.

With his extensive market experience combined with WSG wide range of technical services and quality of delivery, Harry is rapidly driving growth throughout Continental Europe.

Co-founder and President of Servco Industrial Contracting (Canada), a division of WSG Energy Services. John has over 30 years of international energy industry experience from a contractor and owner perspective.

John has a reputation for solid leadership of large multinational teams backed by an innovative entrepreneurial spirit, tenacity, and the proven ability to deliver outstanding results.

Based in Calgary, Alberta, John is tasked with ensuring the continued growth of the Canadian business via diversification, leveraging historical WSG successes and innovation to capitalize on North America’s burgeoning energy, mining, and process sectors.

As the founder and Managing Director of WSG Eftech International (Australia), a division of WSG Energy Services, Andrew has over 30 years of domestic and international energy industry experience.

He has held senior leadership and executive roles for international process and pipeline services companies in Australia, Asia, and the Middle East, and has delivered key projects across these regions. Andrew has extensive experience and knowledge of the Australian oil and gas market, overseeing major construction, commissioning, and shutdown contracts both offshore and onshore.

Based in Sydney, Andrew is responsible for delivering the Australian business strategy, including the growth, diversification, and delivery of multi-million-dollar contracts with a focus on oil and gas, infrastructure, renewables, and mining markets.

Darren has held various management positions in Halliburton and EnerMech throughout his 15 years of experience in the PPS industry. His previous roles have included Tendering & Contracts Manager, Commercial Manager, and General Manager.

Darren’s role in WSG is General Manager of the Asia Business Unit. He will also be responsible for the growth into the Asia markets focusing on the Oil and Gas CAPEX markets and building upon the track record of delivering end to end projects from construction to offshore hook up. He will also leverage on the global experience to expand WSG’s presence in the OPEX market focusing on providing emission reducing solutions in the maintenance and shutdown services to LNG plants, offshore facilities and refineries