AI Solutions Engineer

What you’ll do

Your responsibilities

• Contribute to the AI-driven evolution of the BE-CSS group’s software product portfolio, identifying and implementing opportunities to embed AI capabilities across group applications.
• Design and develop LLM-based solutions, including a first-line support chatbot backed by retrieval-augmented generation (RAG) pipelines, vector databases, and secure knowledge connectors, in close collaboration with the CERN IT department providing the underlying MLOPs substrate.
• Join the ATS AI Core Team and take a major role in the rollout of LLM/agentic AI and knowledge systems, contributing to reusable patterns, evaluation frameworks, and safe agent deployment practices across the sector.
• Collaborate with engineers, domain experts, and scientists from across CERN --including CERN IT, BE-CSS colleagues, and other ATS groups -- to align AI solutions with operational needs and organisational standards.

Still here? Let’s make a quick check about

Your profile

• Solid experience in Python software development, including the design and delivery of production- ready applications in a collaborative engineering environment.
• Practical knowledge of LLM frameworks (such as LangChain or LlamaIndex) and hands-on experience building retrieval-augmented generation (RAG) pipelines and working with vector databases, chunking and embedding techniques.
• Familiarity with agentic AI orchestration approaches and the Model Context Protocol (MCP), or a strong motivation and demonstrated ability to develop this expertise rapidly.
• Understanding of evaluation and safety frameworks for LLM-based systems, including techniques for assessing reliability, output quality, and responsible deployment.

Your skills

• Knowledge of programming techniques and languages: notably Python.
• Architecture and design of ICT systems.
• Identification and selection of relevant emerging ICT technologies.
• Development, validation and deployment of machine learning and AI solutions.

Global Benefits at CERN

• A minimum net entry-salary of 9236 Swiss Francs per month, increasing in line with your years of relevant experience.
  
• 30 days of paid leave per year plus 2 weeks annual closure.
  
• Coverage by CERN’s comprehensive health insurance scheme (for yourself, your spouse and children), and membership of the CERN Pension Fund.
  
• Family, child and infant monthly allowances depending on your individual circumstances.
  
• A relocation package (installation grant, removal, travel expenses) depending on your individual circumstances.
  
• Possibility to extend your contract up to 8 years + eligibility for indefinite contract tenure.
  

Let’s get you ready

Be sure to meet the eligibility criteria

• You are a national of a CERN Member State or Associate Member State . Currently, we cannot consider applications from Pakistani and Lithuanian nationals for positions with a 2026 start date, as the ceiling defined under Article II.5 of the Associate Membership Agreement has been reached.
• You have relevant qualifications and professional experience.
• If you have previously held a Staff contract at CERN, you will not be eligible for these positions.
• Please pay attention to the additional criteria and requirements for this specific position and mentioned above.

You will need these documents to complete your application

• Your CV (English or French)
• Any document you consider relevant to your application

Your CERN Department

of CERN

Ready To apply?

Be prepared with our resources and tips

• Our Hiring Process
• Life at CERN
• Tips for your Application
• Working at CERN
• What happens after you apply?
• More about CERN

All good?

Still have a doubt ? Here are the most frequently asked questions

• What should I expect during my first week at CERN?

  
  
  Your onboarding at CERN includes a comprehensive induction programme, which starts with an official welcome session at the beginning of each month. In addition, you will receive important information both before and after your arrival to ensure a smooth transition into your new role. This process is designed to help you get acquainted with CERN’s environment, your team, and the tools and systems you’ll be using.
  
  

• How big would the team be?

  
  The size of the team you’ll be working with at CERN depends on the specific role and department. Some teams are small and highly specialized, while others are larger and more interdisciplinary. During the interview process, you’ll have the opportunity to learn more about the team structure for the position you are applying for.
  

• What is the working language at CERN?

  
  The working languages at CERN are English and French. However, it is not always mandatory to speak both languages to work at CERN. We offer language training to help you acquiring the other language.
  

• What support does CERN provide for relocation?

  
  CERN does not offer direct assistance with relocation. However, depending on your role and specific criteria, you may be eligible for certain benefits such as an installation allowance and coverage of travel expenses to join CERN. These benefits are designed to help ease the transition when relocating to the Geneva area. For more information, please consult the "Salary, Benefits and Support" page.
  

• Do I need a visa to work at CERN?

  
  Whether you need a visa to work at CERN depends on your nationality and the duration of your stay. CERN assists with the necessary visa and work permit processes for its employees and visitors. The specific requirements will be communicated to you during the recruitment process.
  

• What would my salary be?

  
  Salaries at CERN are determined by a structured scale. Salaries are based on your role, qualifications, and experience, and are not subject to negotiation. Specific details will be provided as your application progresses. For more information, please refer to the dedicated page.