Hi guys, how are you doing? 😄

Do you know if there is any way to visit CMS on Friday, August 28th? Or maybe do some kind of visit that goes beyond the Science Gateway?

I’ve already been to CERN twice, but I’d really love to see more of the technical side this time and have someone show me a bit more about how everything works behind the scenes.

I have a background in Telecommunications, so I’m especially interested in things related to IT, networking, fibre optics, telecommunications and all the infrastructure behind the experiments.

I know some areas are restricted and it probably depends on what’s going on at CERN that day, but I thought I’d ask just in case someone knows if there’s any possibility! 😄

Also, I’m going alone, so if anyone was thinking about visiting CERN around that date, feel free to join me! I think it could be even more fun to share the experience with someone who is just as curious about how CERN works from the inside. The more, the merrier! 😂

Thanks guys! 🙌

Hi everyone,

I'm about to start a position at CERN and just received my French long-stay visa.

The issue: my flight itinerary (Brazil → Lisbon → Geneva) has me landing in the Schengen area on 30/08, and my contract and visa start date is 01/09.

I'm a Brazilian citizen, so I'm visa-exempt for short stays (tourism) in Schengen anyway.

Has anyone here been in a similar situation — arriving before their D-visa/DIPLO-SERVICE validity start date? ADid border control at your first Schengen entry point cause any issues seeing a visa in your passport that wasn't valid yet, even though you were technically entering visa-exempt?

So as you read the title im a jee aspirant insanely hard exam and i have the confidence to clear that exam and get into top research uni in india and after that i want to do my phd in math in top top top uni in europe so after this i really like really want to work at CERN and i love math and particle physics like i just love them. So i really want to know how to get into CERN. Any help or advice is highly appreciated.

Hi! I’m a final-year Bachelors AI & Data Science student from India considering applying for CERN’s 6-month Short-Term Internship.

1.For those who’ve applied or been selected, any tips, advice, or things I should know before submitting the application would be greatly appreciated.

2.Also, for the recommendation letter, what should the professor ideally focus on/mention?

Also honestly I’m a bit skeptical about applying since the acceptance rate seems very low, and I don’t have formal research experience or publications. My CV does include multiple hackathon wins, a summer internship at Barclays, and a scholarship.

Hey all, I saw few posts for similar questions but I just need a practical info/advice for my case.

I'll be working on Prévessin site, mainly building 774.. and I don't have a driving license.. Do you think it's still easy for me to live in France (i.e, Ferney-Voltair) and go everyday by bus/bike)? Is it well connected by bus? Is the cycling easy on daily basis? Inside Prévessin and in france in general?

Would be nice to hear real experiences. Thanks.

Why CERN and Fermilab's particle accelerators might have a "fish head" problem

Hey everyone :D

I am currently pursuing my 2nd-year undergrad degree in the field of Electrical & Electronics Engineering at a state university in India.

I've been interested in pursuing a research career in Quantum Engineering in the long term, but right now I am particularly interested in the field of High Energy Physics Instrumentation and the hardware side of experimental physics.

I've started building my foundations and strengthening my knowledge in the fields of FPGA, Control Systems, Scientific Python Programming, etc. Trying to specialise in a specific field rather than many, and I'm also currently working on a small particle detector project.

But realistically, I don't really have anyone to guide me; it's kind of like a void of unanswered questions. I have professors at my college, but most of their work is in Electric Vehicles, Control systems, low-power electronics, etc, so the specific area I'm interested in isn't really represented around me.

I would be applying for the Short-Term Internship & Summer Studentship at CERN in the later years of my UG, and I'd like to understand how I can best prepare myself for opportunities like these.

Again, getting into CERN isn't the end goal for me; what I truly value is the research exposure, diversity and learning opportunities.

I would be grateful if someone here is willing to guide me on what I should focus on for this field; until now, it has mostly been self-research, but that has its boundary conditions too, after a certain point.

I have never experienced such bullshit experience in my whole life while working here. It just looks good outside dream place to work, inside it's just the worst place to be. The supervisor does not even understand Supervision. No flow of work. Constantly changing statements. Remembers every work is super urgent work and forces to get it done next day. Just ridiculous. Does not check anything. No time to explain stuff. Will just bring you for one task - no info , nothing, will throw in the big ocean. the project for which I was hired for could not even start. always doing other's stuff. everything becomes urgent to that person half day before.

I don't even know if I complain it to HR anything will happen ( action not advice ). I have tried everything to make it better but it's never

Hi everyone,

I’m considering applying for a Mechanical Engineer position at CERN, and I’m wondering how strictly the degree requirements are interpreted.

The position asks for a Master’s degree or equivalent relevant experience. I have a Bachelor’s degree in Aerospace Engineering, but no Master’s. Since graduating, I’ve built several years of relevant engineering experience.

Based on the job description, my experience seems to match the technical requirements quite closely, so I’m definitely interested in applying. My only concern is whether not having a Master’s could put me at a significant disadvantage or potentially prevent me from being considered.

1. Has anyone here worked at CERN or gone through their recruitment process with a similar background?
2. How does CERN generally interpret “Master’s degree or equivalent relevant experience” in practice?

Any insight would be really appreciated, especially from current/former CERN employees or people who have applied for engineering positions there.

Thanks :)

Bonjour à tous !

Je suis nouvelle ici et je me permets de partager mon expérience car j'aimerais beaucoup avoir vos retours.

J'ai récemment postulé au Graduate Programme du CERN pour un poste de Graphic Designer. Malheureusement, j'ai reçu un e-mail m'informant que je n'avais pas été présélectionnée pour la suite du processus de recrutement.

Je comprends tout à fait que le CERN reçoive un très grand nombre de candidatures et qu'il soit difficile de fournir un retour personnalisé à chacun. Je ne remets absolument pas cela en question.

En revanche, ce qui est frustrant en tant que candidat, c'est de ne pas savoir ce qui a motivé ce refus.

Était-ce mon portfolio ?
Mon parcours ?
Mon niveau d'expérience ?
Le fait que je n'aie jamais travaillé dans un environnement scientifique ?
Ou simplement parce que la concurrence était particulièrement forte ?

J'aimerais vraiment comprendre, non pas pour contester leur décision, mais pour savoir ce que je pourrais améliorer lors d'une prochaine candidature.

Je trouve qu'un retour, même très général (par exemple : expérience insuffisante, portfolio, adéquation avec le poste, compétences techniques, etc.), pourrait être très utile aux candidats. Cela permettrait de mieux comprendre les attentes du CERN et de progresser.

Travailler au CERN est un véritable objectif pour moi. J'ai consacré beaucoup de temps à préparer cette candidature, à me renseigner sur l'organisation, ses missions et son fonctionnement. C'est donc forcément difficile de recevoir un refus sans savoir ce qui n'a pas convaincu.

Je serais curieuse d'avoir vos retours :

• Certains d'entre vous ont-ils vécu la même expérience ?
• Y a-t-il des personnes qui travaillent (ou ont travaillé) au CERN et qui pourraient partager quelques conseils ?
• Et s'il y a des graphistes parmi vous, qu'est-ce qui, selon vous, peut faire la différence pour ce type de poste ?

Merci d'avance à toutes les personnes qui prendront le temps de répondre. Tous vos conseils ou retours d'expérience seront les bienvenus.

Hi, I want to learn how to use Root for data analysis, plotting and fitting and don't know where exactly to start. I am using a M2 Macbook. So I have a few questions maybe some of you can answer:

Where should I start?

Are there any good youtube tutorials that cover everything from beginning to end? (how to install, how to open a file and access info, plotting things...)

Should I learn C++ before starting? (So far I have been using python)

Is there any sort of Desctop application or is everything done in terminal?

Is it even worth learning? (I was using python with uproot once and it kinda worked but was very slow)

I'm a Data Science undergrad currently in my final year, graduating in July 2027.

I noticed that the 2027 Technical Studentship application lists 01/04/2027 as the ideal start date, so I wanted to confirm whether I'd be eligible to apply even though I'll still be completing my degree at that time.

Also, I'd really appreciate any tips or advice from people who have previously applied or been selected, especially anything you wish you had known before applying.

Thanks in advance!