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Gary Marshalsey Email & Phone Number
Maintenance Manager
at
PROTERRA ENERGY LTD
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✓ Verified July 2026
3 data sources
Profile completeness 86%
Current company
Role
Maintenance Manager
Location
Inverness, Scotland, United Kingdom
Company size
Who is Gary Marshalsey? Overview
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Quick answer
Gary Marshalsey is listed as Maintenance Manager at PROTERRA ENERGY LTD, a with 8 employees, based in Inverness, Scotland, United Kingdom. AeroLeads shows a matched LinkedIn profile for Gary Marshalsey.
Gary Marshalsey previously worked as Construction Project Manager / Building Services Engineer at Self-Directed Career Break and Operations Manager - Flotta Oil Terminal at Repsol Sinopec Resources Uk Limited. Gary Marshalsey studied at North East Scotland College.
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Email format at PROTERRA ENERGY LTD
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PROTERRA ENERGY LTD
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Profile bio
About Gary Marshalsey
Accomplished professional with a robust background in major hazard industries within the oil and gas sector. Proven track record in driving operational excellence, boosting safety, and optimising asset performance. Skilled in managing high-hazard assets, overseeing shutdowns and major maintenance projects, and ensuring compliance with stringent regulatory requirements, focusing on HSE and process safety. A versatile leader; known for transformative leadership, fostering stakeholder relationships, and achieving substantial performance improvements. Recognised for delivering significant cost savings and promoting a culture of safety and compliance. Skills– High-hazard asset management– Shutdown, project and major maintenance management – HSE, operational integrity, process safety and major accident hazard risk management – Navigating compliance in complex regulatory landscapes– Emergency management and maritime port facility security – Safety case and COMAH safety report management– Transformative leadership and performance improvement processes – Relationship building with regulatory bodies, local government, NGOs and communities– HR functions & contractor management
Current workplace
Gary Marshalsey's current company
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Proterra Energy Ltd
10 roles
Gary Marshalsey work experience
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Construction Project Manager / Building Services Engineer
Self-Directed Career Break
Designed and constructed a custom family home and renovated two residential properties, managing all aspects from planning to completion, while fulfilling the roles of Client, Principal Designer, and Principal Contractor under the Construction (Design and Management) Regulations 2015.Developed expertise in electrical systems, energy optimisation, and sustainable engineeringProvided consultancy on sustainable, energy-efficient solutions, including renewable energy systems and fire safety strategies.Solved complex construction challenges, prioritising compliance and risk mitigation.
Operations Manager - Flotta Oil Terminal
Spearheaded midstream operations ensuring full compliance with COMAH legislation, authorisations, and company standards.Accomplished 100% uptime and a reliable lifting programme, eliminating demurrage charges and amplifying operational efficiency.Reduced annual operating expenditure by 39%, achieving savings of £22M and elevating financial performance.Restructured the organisation, decreasing headcount by 58% from 301FTE to 176FTE, right-sizing operations and cutting costs significantly.
Oct 2013 - Dec 2018
Offshore Installation Manager
Directed the safe operation of the Buchan Alpha Floating Production Vessel, resulting in exemplary safety performance and an annualised operational efficiency exceeding 91%.Extended the installation service life by five years through advocacy for ageing asset structural integrity assurance.
Apr 2009 - Oct 2013
Offshore Installation Manager / Offshore Team Leader
Sep 2008 - Apr 2009
Offshore Installation Manager
Nov 2007 - Sep 2008
Offshore Team Leader / Deputy Offshore Installation Manager
Nov 2006 - Nov 2007
Maintenance Team Leader / Logistics Coordinator / Stand-In Offshore Installation Manager
Jun 2002 - Nov 2006
Senior Rig Electrician - Electrical Technician - Rep - Maintenance Team Leader
Apr 1998 - Jun 2002
Electrical Motorman, Rig Electrician, Senior Rig Electrician, Responsible Electrical Person
Jul 1991 - Apr 1998
Team & coworkers
Colleagues at PROTERRA ENERGY LTD
Other employees you can reach at proterra-energy.com. View company contacts for 8 employees →
PE
Proterra Energy
Colleague at Proterra Energy LtdInverness, Scotland, United Kingdom
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AS
Alan Staunton
Colleague at Proterra Energy LtdInverness, Scotland, United Kingdom
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CC
Colin Cannon
Colleague at Proterra Energy LtdInverness, Scotland, United Kingdom
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TS
Terry Stebbings
Colleague at Proterra Energy LtdInverness, Scotland, United Kingdom
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KM
Kieron Moore
Colleague at Proterra Energy LtdRead, England, United Kingdom
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Proterra Energy
Colleague at Proterra Energy LtdInverness, Scotland, United Kingdom
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AS
Alan Staunton
Colleague at Proterra Energy LtdInverness, Scotland, United Kingdom
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CC
Colin Cannon
Colleague at Proterra Energy LtdInverness, Scotland, United Kingdom
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TS
Terry Stebbings
Colleague at Proterra Energy LtdInverness, Scotland, United Kingdom
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KM
Kieron Moore
Colleague at Proterra Energy LtdRead, England, United Kingdom
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2 education records
Gary Marshalsey education
Education record
Education record
FAQ
Frequently asked questions about Gary Marshalsey
Quick answers generated from the profile data available on this page.
What company does Gary Marshalsey work for?
Gary Marshalsey works for PROTERRA ENERGY LTD.
What is Gary Marshalsey's role at PROTERRA ENERGY LTD?
Gary Marshalsey is listed as Maintenance Manager at PROTERRA ENERGY LTD.
Where is Gary Marshalsey based?
Gary Marshalsey is based in Inverness, Scotland, United Kingdom while working with PROTERRA ENERGY LTD.
What companies has Gary Marshalsey worked for?
Gary Marshalsey has worked for Proterra Energy Ltd, Self-Directed Career Break, Repsol Sinopec Resources Uk Limited, Talisman Energy, and Wood Group Engineering North Sea Limited.
Who are Gary Marshalsey's colleagues at PROTERRA ENERGY LTD?
Gary Marshalsey's colleagues at PROTERRA ENERGY LTD include Proterra Energy, Alan Staunton, Colin Cannon, Terry Stebbings, and Kieron Moore.
How can I contact Gary Marshalsey?
You can use AeroLeads to view verified contact signals for Gary Marshalsey at PROTERRA ENERGY LTD, including work email, phone, and LinkedIn data when available.
What schools did Gary Marshalsey attend?
Gary Marshalsey studied at North East Scotland College.
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