Full-Time

Welding Engineer

GTT

GTT

501-1,000 employees

Designs membrane LNG containment systems

Compensation Overview

€45k - €55k/yr

Saint-Rémy-lès-Chevreuse, France

In Person

Bachelor's, Master's

Category
Manufacturing & Process Engineering
Required Skills
Welding

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Requirements
  • A higher technical education at engineer, master's, or equivalent level with a specialization in welding.
  • International Welding Engineer certification, an equivalent qualification, or recognized strong expertise in welding.
  • At least 5 years of experience in industrial welding.
  • Operational technical English.
  • Proficiency in welding processes.
  • Knowledge of non-destructive testing.
  • Knowledge of materials physics, mechanics, and production engineering.
  • Ability to analyze, qualify, and improve industrial processes.
Responsibilities
  • Define welding and quality requirements for products to be approved.
  • Draft welding specifications.
  • Plan, coordinate, and monitor qualification tests.
  • Check the conformity of the results obtained.
  • Validate technical files and associated reports.
  • Participate in supplier audits and approval procedures.
  • Support project teams in developing new technologies.
  • Address technical issues related to welding, non-destructive testing, and manufacturing.
  • Propose and implement appropriate solutions.
  • Draft technical specifications.
  • Validate welding procedures, including WPS/WPQR.
  • Lead technical investigations in cases of nonconformity or site-related issues.
  • Provide support to operational teams working at shipyards.
  • Conduct technological monitoring of welding and non-destructive testing processes.
  • Identify opportunities for improvement and innovation.
  • Lead professional development projects in collaboration with external partners.
  • Define the technical objectives, schedule, and budget of projects.
  • Monitor developments carried out by partners.
  • Analyze, promote, and communicate results to Innovation teams and management.
  • Participate in protecting GTT know-how through patents and internal innovation mechanisms.
  • Manage material stocks required for testing.
  • Ensure the proper condition of welding equipment, measuring instruments, and personal protective equipment.
  • Ensure compliance with and transmission of GTT know-how to suppliers, partners, subcontracted laboratories, and shipyards.
Desired Qualifications
  • Field experience and/or experience in a demanding industrial environment.

GTT designs and licenses membrane containment systems for LNG storage and transportation, serving shipbuilders, shipowners, and energy companies. Its membrane technology lines LNG tanks to safely hold cryogenic LNG, with licensing supported by technical assistance and digital optimization services. The company differentiates itself through a patented LNG-specific containment focus, a global network of partnerships, and a service ecosystem that includes maintenance and training in addition to licensing. Its goal is to maintain leadership in the LNG sector by expanding internationally and delivering reliable containment solutions and related services.

Company Size

501-1,000

Company Stage

IPO

Headquarters

Saint-Rémy-lès-Chevreuse, France

Founded

1965

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Simplify Jobs

Simplify's Take

What believers are saying

  • H1 2026 brought 65 orders and €1.9 billion backlog, extending beyond 2029.
  • July 24, 2026 Petronas chose GTT Marine for LNG fleet digitization.
  • June 2026 PaxOcean servicing agreement expands recurring maintenance revenue for membrane tanks.

What critics are saying

  • GTT depends on Samsung Heavy Industries, HD Hyundai, and Jiangnan Shipyard order timing.
  • H1 2026 revenue stayed flat at €387.3 million despite record backlog.
  • Any LNG carrier cancellation before 2029 hits licensing revenue and exposes backlog fragility.

What makes GTT unique

  • GTT controls membrane LNG tank standards, especially Mark III Flex and NO96 Super+.
  • GTT Marine unites Danelec, Ascenz Marorka, and VPS across 17,000 vessels.
  • GTT sells licensed engineering, technical support, and lifecycle services, not capital-heavy shipbuilding.

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Benefits

Paid Vacation

Remote Work Options

Commuter Benefits

Meal Benefits

Company News

MoneyWeek
Jul 27th, 2026
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Inspenet
Jul 26th, 2026
GTT will drive an FLNG unit and six new LNG vessels with cryogenic technology.

GTT will drive an FLNG unit and six new LNG vessels with cryogenic technology. Gaztransport & Technigaz (GTT) will design the storage systems with cryogenic technology for the Delfin FLNG unit and six new LNG vessels. Gaztransport & Technigaz (GTT) announced the award of new orders for the design of cryogenic tanks for an FLNG unit and six LNG carriers to be built in South Korea and China. The contracts cover a floating LNG production facility and six large-capacity vessels, all equipped with the Mark III Flex membrane containment system. The project portfolio comprises two 174,000 m^3 vessels, four 175,000 m^3 vessels, and the Delfin FLNG 1 unit, which will have 180,000 m^3 of LNG storage capacity. This expansion reflects growing investment in infrastructure for liquefaction, storage, and maritime transport of liquefied natural gas. Delfin FLNG will mark a milestone for LNG in the United States. One of the most significant contracts corresponds to Delfin FLNG 1, whose cryogenic tank engineering was commissioned by Samsung Heavy Industries for the Delfin LNG project, located off the coast of Louisiana. According to GTT, the facility will be the first floating liquefaction unit (FLNG) to enter operation in the United States and the largest in the world by planned production capacity, with 4.4 million tons of LNG per year (MTPA). Delivery is scheduled for mid-2030. The unit will feature eight cryogenic tanks, arranged in two rows, with a total capacity of 180,000 m^3 of LNG storage, all equipped with the Mark III Flex system. Six new vessels will expand LNG transport capacity. In addition to the FLNG project, GTT will design the containment systems for two new 174,000 m^3 LNG carriers, built by HD Hyundai Heavy Industries following an order placed by HD Korea Shipbuilding & Offshore Engineering (HD KSOE). The vessels will incorporate Mark III Flex technology and their delivery is scheduled for the first quarter of 2029. These are joined by four new 175,000 m^3 LNG carriers to be built by Jiangnan Shipyard for COSCO Shipping Energy. Deliveries are scheduled between the third quarter of 2029 and the third quarter of 2030. Cryogenic technology will be critical for reliability. Cryogenic containment systems represent one of the most critical components of LNG infrastructure. Their function is to maintain liquefied natural gas at temperatures close to -163°C, minimizing heat transfer and ensuring leak-tightness throughout the asset's operational life. In the case of Delfin FLNG 1, GTT emphasized that the Mark III Flex system was developed to respond to demanding maritime and offshore conditions, including operations in regions exposed to hurricanes. These characteristics enable improved reliability and safety of facilities subjected to high mechanical and environmental loads. From a mechanical integrity perspective, these systems will require strict inspection programs, fabrication control, structural monitoring, and maintenance to preserve the performance of membranes, thermal insulation, and joints during decades of operation. LNG infrastructure continues to expand. The new contracts obtained by GTT demonstrate the sustained growth of global infrastructure for liquefied natural gas. The incorporation of new FLNG units and LNG carriers will expand the production and transport capacity needed to supply markets with constantly increasing energy demand. For the offshore industry, these projects also represent new opportunities for manufacturers, shipyards, inspection companies, non-destructive testing providers, and asset integrity specialists who will participate in the life cycle of these strategic facilities. Verified Author Industrial Engineer with outstanding experience in Oil and Gas, technical advisor in inspection engineering.

Hellenic Shipping News Worldwide
Jul 16th, 2026
GTT receives an order from HD KSOE for the tank design of two new LNG Carriers.

GTT receives an order from HD KSOE for the tank design of two new LNG Carriers. GTT announces that it has received, in the second quarter of 2026, an order from HD Korea Shipbuilding & Offshore Engineering (HD KSOE[1]) for the tank design of two new Liquefied Natural Gas Carriers (LNGCs). The LNGCs will be built by the shipyard HD Hyundai Heavy Industries, each with a capacity of 174,000 m^3. The cryogenic tanks of the vessels will be equipped with the Mark III Flex membrane containment system developed by GTT. Delivery of the vessels is expected by the first quarter of 2029. Source: GTT

LngIndustry
Jun 18th, 2026
GTT receives LNG storage tanks order.

GTT receives LNG storage tanks order. GTT has received an order from its partner, China Chengda Engineering Co., Ltd, for the design of three very large onshore LNG storage tanks. These tanks will be built for PipeChina Group Co., Ltd as part of the Yuedong LNG terminal project, located in Jieyang City, Guangdong province, a strategic hub in South China's natural gas network. Each tank will offer a capacity of 240 000 m[3], making them the largest onshore LNG storage tanks in the world to feature GTT's GST(R) membrane full containment technology. The GST technology delivers inherent advantages over land storage tank traditional technology. The design enables a 40% reduction in steel requirements, thereby contributing to emissions reduction across the value chain. It also incorporates optimised insulation, ensuring high and consistent energy performance. Thanks to the compactness of the GST technology, the tanks can offer up to 10% more LNG storage capacity within the same footprint. Beyond LNG storage, these tanks will also provide the versatility needed to anticipate future energy and industrial needs, with the capability to store other liquefied gases such as ethane, propane, ethylene and ammonia. The delivery of the three tanks is scheduled for 4Q28. François Michel, CEO of GTT, declared: "This major project reflects the continued trust of our Chinese partners and confirms the strong value proposition of GTT's GST membrane full containment technology for large scale LNG infrastructure. Recognised for its safety, reliability and operational efficiency, our technology will contribute to the development of a strategic LNG hub for China. We are proud to support our partners in advancing the country's energy transition and strengthening its energy infrastructure." Xu Gang, President of China Chengda Engineering Co., Ltd, added: "We are delighted to renew our collaboration with GTT on the construction of the world's largest membrane full containment tanks featuring the latest generation of GST technology. This project reflects our shared commitment to delivering advanced, safe and efficient LNG infrastructure solutions." A podcast series for professionals in the LNG industry featuring short, insightful interviews. Subscribe on your favourite podcast app to start listening today. Embed article link: (copy the HTML code below):

TradeWinds
Jun 8th, 2026
New appetite for maritime digitech investment as mergers continue.

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