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Air Liquide

Industrial and medical gas provider

Researcher - LLM Applications

Full-TimeUpdated on 10/15/2026
No salary listed
Mid
Master's, PhD
Shanghai, China
In Person
AI & Machine LearningNatural Language Processing & LLMs

About the job

Requirements
  • A Master of Science or Ph.D. in Computer Science, Artificial Intelligence, Statistics, Mathematics, Engineering, or a related field.
  • Solid practical experience in fine-tuning large language models and a deep understanding of its principles.
  • In-depth understanding of Retrieval-Augmented Generation architecture and at least one complete, deployed Retrieval-Augmented Generation project; familiarity with relevant frameworks.
  • Excellent fundamental understanding of statistics, including distributions, probability, and linear regression.
  • Programming experience with R and Python is preferred; knowledge of Java, C++, or JavaScript is also beneficial.
  • Must be comfortable working in English daily and in a multidisciplinary and international team.
Responsibilities
  • Collaborate with business entities to define problems and business requirements, translate them into functional design specifications, and develop solutions; identify, evaluate, and select industrial or academic partners as needed.
  • Lead and participate in the design, development, and deployment of artificial intelligence solutions based on large language models to address challenges in industrial, research and development, and healthcare domains.
  • Lead the fine-tuning and optimization of open-source large language models, such as Llama, Qwen, and DeepSeek, for business scenarios including technical document comprehension, process parameter optimization, safety report analysis, and scientific knowledge mining.
  • Apply Retrieval-Augmented Generation techniques, integrating internal knowledge bases such as technical patents, engineering manuals, and research reports with external data to build intelligent question-and-answer, content-generation, and knowledge-management systems.
  • Test and verify solution performance using developed prototypes.
  • Define and develop business tools based on prototype performance verification, ensure transfer of the tools to operational entities, and support industrial deployment.
  • Train team members on implemented methodologies to ensure the sustainability of solutions.
  • Support knowledge transfer within Air Liquide and publish research in internal research and development reports, at conferences, and potentially in peer-reviewed journals.
  • Work with information technology, internal, and external organizations to obtain, clean, visualize, and analyze data.
  • Track advancements in natural language processing, large language models, and generative artificial intelligence, including agents and multimodality, and evaluate and introduce new technologies to enhance team capabilities.
Desired Qualifications
  • Independent and interdisciplinary research experience is preferred.
  • Knowledge of advanced statistics, including clustering, elastic net, maximum likelihood estimation, dimensionality reduction such as principal component analysis and partial least squares, stochastic processes, Bayesian networks, and time-series models, is beneficial.
  • Knowledge of machine-learning models such as decision trees, random forests, and support vector machines is beneficial.
  • Knowledge of Java, C++, or JavaScript is beneficial.
  • Knowledge of French is beneficial.

About the company

Air Liquide produces and supplies industrial and medical gases, such as oxygen, nitrogen, hydrogen, argon, and specialty gases, to manufacturers, healthcare providers, electronics, and energy companies. It operates through production plants, pipelines, cylinder networks, and on-site supply units, and it also designs and builds gas production and separation systems, including cryogenic air separation plants and large electrolyzers, via its engineering arm. Its Gas & Services business serves industry and healthcare and it is a major producer of hydrogen, investing in low-carbon hydrogen projects and electrolysis as part of industrial decarbonization. It serves the semiconductor industry and space programs as well. Its goal is to enable industrial decarbonization and the energy transition by providing reliable gases and engineering capabilities for large-scale gas production, hydrogen supply, and on-site services.

Company Size

10,001+

Company Stage

IPO

Headquarters

Paris, France

Founded

1902

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Simplify's Take

What believers are saying

  • Q2 2026 comparable sales grew 3.5%, and electronics project decisions topped €1 billion.
  • Air Liquide said H1 2026 industrial investment decisions reached €2.9 billion, up 26%.
  • The Taichung, Taiwan plant opened March 25, 2026, serving AI chipmakers.

What critics are saying

  • Elliott built a stake August 31, 2026, and demands margin improvement and more buybacks.
  • Air Liquide executed only €167 million of buybacks in early 2026, versus Linde's $4.6 billion.
  • Electrolyzers and chip plants need flawless commissioning; Normand'Hy, ELYgator, and Taiwan delays defer returns.

What makes Air Liquide unique

  • Air Liquide runs 54 semiconductor facilities in Taiwan and a first local advanced materials plant.
  • Its Normandy hydrogen network links pipelines, electrolyzers, CCS, and TotalEnergies contracts.
  • DIG Airgas, closed January 13, 2026, doubled South Korea workforce and scale.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

Disability Insurance

Health Savings Account/Flexible Spending Account

Unlimited Paid Time Off

Flexible Work Hours

Remote Work Options

Paid Vacation

Paid Sick Leave

Paid Holidays

Sabbatical Leave

Hybrid Work Options

Stock Options

Company Equity

401(k) Retirement Plan

401(k) Company Match

Performance Bonus

Profit Sharing

Employee Stock Purchase Plan

Relocation Assistance

Employee Referral Bonus

Student Loan Assistance

Parental Leave

Family Planning Benefits

Fertility Treatment Support

Adoption Assistance

Childcare Support

Elder Care Support

Pet Insurance

Bereavement Leave

Professional Development Budget

Conference Attendance Budget

Training Programs

Tuition Reimbursement

Growth & Insights and Company News

Headcount

6 month growth

5%

1 year growth

5%

2 year growth

6%
MarketScreener
Oct 6th, 2026
Air Liquide raises $2.3B in multi-tranche bond to fund BEYOND 2030 strategic plan

Air Liquide has successfully issued a €2 billion multi-tranche bond following its Capital Markets Day and announcement of its BEYOND strategic plan. The bond, significantly oversubscribed by investors, was executed under the Group's Euro Medium Term Note programme with 2-year, 5-year and 10-year maturities. The weighted average interest rate is below 4.00% per annum, considering pre-hedging arrangements. The proceeds will finance general corporate purposes and debt refinancing. The issue will be rated "A" by Standard & Poor's and Scope Ratings and "A2" by Moody's. Chief Financial Officer Jérôme Pelletan said the issuance reflects investor confidence in implementing the company's new BEYOND strategic plan for 2030.

Euronext
Sep 7th, 2026
Activist investor Elliott builds Air Liquide stake, pushes for changes, sources say | live

By Svea Herbst-Bayliss NEW YORK, Aug 31 (Reuters) - Activist investor Elliott Investment Management has built a stake in Paris-based Air Liquide and is urging the French multinational company to improve its margins, sources familiar with the matter told Reuters.

Air Liquide
Jul 6th, 2026
Air Liquide invests over 170M USD in the U.S. to support SK hynix’s ambition to build a global AI memory ecosystem | Air Liquide

Air Liquide invests over 170M USD in the U.S. to support SK hynix’s ambition to build a global AI memory ecosystem

Yahoo Finance
May 1st, 2026
Air Liquide's fair value rises to $224 as analysts lift targets to $234

Air Liquide's fair value estimate has shifted from €196.58 to €198.15, moving closer to external analyst targets clustered around €206 to €207. Recent analyst activity, including raised price targets from Citi (to €207 from €195) and Berenberg (to €206 from €202), alongside upgrades from Kepler Cheuvreux and Morgan Stanley, reflects growing confidence in the company's revenue and cash flow potential. The company recently announced significant investments, including over $350 million for oxygen and nitrogen supply to HYUNDAI-POSCO Louisiana's facility, €200 million for industrial gas units in Hiroshima, and completion of an Advanced Materials plant in Taiwan. An upcoming Analyst and Investor Day is expected to provide further details on medium-term priorities and capital allocation.

World-Energy
Apr 1st, 2026
Air Liquide launches $565M green bond to refinance hydrogen and sustainability projects

Air Liquide has launched its first green bond issue, raising €500 million to finance and refinance sustainable projects including hydrogen development. The 10-year bond was issued at a yield of 0.461% under the group's Euro Medium Term Note programme. Proceeds will refinance Air Liquide's September 2021 bond maturities and support the company's long-term growth. The issuance follows ambitious sustainable projects announced in March, particularly focused on reducing CO2 emissions. Fabienne Lecorvaisier, Executive Vice-President of Finance and Operations, said the transaction demonstrates investor confidence in Air Liquide's sustainability commitments. The company plans to become a regular issuer of sustainable bonds, integrating ESG considerations with economic and financial performance in its growth strategy.