CERN tech stack
CERN builds mostly with Python, C++, SQL, JavaScript. Its stack also includes Linux, Kubernetes, OpenSearch, Oracle. Python is named in 46 of the 60 job postings CERN published in the last 12 months (77%). Counted by Alion from the job postings of CERN, updated Sep 27, 2026.
What programming languages does CERN use?
Python is named in 77% of job postings at CERN, followed by C++ (20%), SQL (13%), JavaScript (12%).
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What frameworks and libraries does CERN use?
React.js is named in 7% of job postings at CERN, followed by Django (3%), Spring Boot (3%), NumPy (3%).
React.js
4 7%
Django
2 3%
Spring Boot
2 3%
NumPy
2 3%
Pandas
2 3%
Angular
1 2%
FastAPI
1 2%
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What databases does CERN use?
OpenSearch is named in 7% of job postings at CERN, followed by Oracle (7%), MySQL (3%), PostgreSQL (3%).
What cloud and platforms does CERN use?
Linux is named in 38% of job postings at CERN, followed by Kubernetes (28%), GitLab (10%), GitLab CI (5%).
Kubernetes
17 28%
GitLab
6 10%
GitLab CI
3 5%
Grafana
3 5%
AWS
2 3%
Airflow
2 3%
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What developer tools does CERN use?
Git is named in 18% of job postings at CERN, followed by Docker (12%), Puppet (10%), Ansible (8%).
Git
11 18%
Docker
7 12%
Puppet
6 10%
Ansible
5 8%
Helm
5 8%
Prometheus
5 8%
AutoCAD
3 5%
OpenStack
3 5%
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Which engineering practices does CERN ask for?
CI/CD is named in 33% of job postings at CERN, followed by HPC (13%), Configuration Management (8%), Machine Learning (8%).
CI/CD
20 33%
HPC
8 13%
GitOps
2 3%
AI Agents
1 2%
Anomaly Detection
1 2%
Show all (22)
What does each CERN team work with?
The technologies each team's postings require most often, with the number of postings that require them.
DevOps
11 postingsBackend
11 postingsScience & Research
9 postingsHardware
8 postingsSupport
4 postingsHow does your stack fit CERN?
How much does CERN pay by technology?
Median stated pay of the postings that name each technology, against the median of all CERN postings with stated pay: $101k across 47 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| Python | 36 | $101k | 0% |
| Linux | 16 | $95k | −7% |
| Kubernetes | 13 | $86k | −15% |
| C++ | 12 | $101k | 0% |
| SQL | 7 | $101k | 0% |
| JavaScript | 7 | $86k | −15% |
How modern is the CERN stack?
CERN scores 74 out of 100 (Modern). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 1; legacy ones: 0.
How common is the CERN stack in its industry?
Share of the 435 companies in the same industries, whose stack Alion knows, that use each technology.
What sets CERN apart
Companies with a stack like CERN
Questions about the CERN tech stack
What programming languages does CERN use?
The languages named in CERN job postings are Python (77%), C++ (20%), SQL (13%), JavaScript (12%), VHDL (7%), as a share of the 60 postings of the last 12 months.
Does CERN use React.js?
Yes. React.js is named in 4 of 60 job postings (7%) and required in 2 of them.
What cloud and platforms does CERN use?
The cloud and platforms named in CERN job postings are Linux (23), Kubernetes (17), GitLab (6) (postings in brackets).
What skills do you need for a DevOps job at CERN?
DevOps postings at CERN most often require Linux (8), Python (8), Kubernetes (5), OpenStack (3), out of 11 postings in the last 12 months.
Is the CERN tech stack changing?
No new technology has appeared in CERN job postings in the last six months.
How modern is the CERN tech stack?
CERN scores 74 out of 100 (Modern). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 1; legacy ones: 0.
How does Alion know the CERN tech stack?
Alion reads every job posting CERN publishes and tags the technologies each one names. The figures on this page count the 60 postings of the last 12 months and were updated on Sep 27, 2026.
Method and citation
Alion reads every job posting the company publishes and tags the technologies each one names. Shares count the postings of the last 12 months, open and closed; the company's own products are counted apart. How we count
Alion, "CERN tech stack: 100 technologies from 60 job postings", as of Sep 27, 2026. https://alion.io/company/cern/technologies