# CERN - **Answer**: CERN builds mostly with Python, C++, JavaScript, SQL. Its stack also includes Linux, Kubernetes, React.js, OpenSearch. Python is named in 66 of the 97 job postings CERN published in the last 12 months (68%). Counted by Alion from the job postings of CERN, updated Nov 11, 2026. - **Window days**: 365 - **Postings analysed**: 97 - **Open postings**: 16 - **Technologies in use**: 116 - **Modernity score**: 72 - **Ai adoption**: yes - **License**: CC BY-SA 4.0 ## Company - **Id**: 4055 - **Name**: CERN - **Domain**: home.cern - **Url**: ## Technologies - **Python** — Layer: languages; Postings: 66; Share: 0.6804; Required: 52; Open postings: 8; First seen: 2026-07-07 - **Linux** — Layer: cloud; Postings: 33; Share: 0.3402; Required: 31; Open postings: 4; First seen: 2026-07-09 - **CI/CD** — Layer: practices; Postings: 30; Share: 0.3093; Required: 26; Open postings: 6; First seen: 2026-07-07 - **Kubernetes** — Layer: cloud; Postings: 24; Share: 0.2474; Required: 22; Open postings: 3; First seen: 2026-07-09 - **C++** — Layer: languages; Postings: 22; Share: 0.2268; Required: 19; Open postings: 5; First seen: 2026-08-03 - **Git** — Layer: tools; Postings: 15; Share: 0.1546; Required: 11; Open postings: 2; First seen: 2026-07-07 - **JavaScript** — Layer: languages; Postings: 13; Share: 0.134; Required: 10; Open postings: 2; First seen: 2026-08-03 - **HPC** — Layer: practices; Postings: 11; Share: 0.1134; Required: 11; Open postings: 1; First seen: 2026-08-12 - **Docker** — Layer: tools; Postings: 11; Share: 0.1134; Required: 7; Open postings: 2; First seen: 2026-07-16 - **SQL** — Layer: languages; Postings: 10; Share: 0.1031; Required: 9; Open postings: 2; First seen: 2026-07-16 - **Machine Learning** — Layer: practices; Postings: 8; Share: 0.0825; Required: 7; Open postings: 1; First seen: 2026-08-06 - **Puppet** — Layer: tools; Postings: 8; Share: 0.0825; Required: 7; Open postings: 2; First seen: 2026-07-21 - **Helm** — Layer: tools; Postings: 8; Share: 0.0825; Required: 5; Open postings: 1; First seen: 2026-08-12 - **React.js** — Layer: frameworks; Postings: 8; Share: 0.0825; Required: 4; Open postings: 1; First seen: 2026-08-12 - **CATIA** — Layer: tools; Postings: 7; Share: 0.0722; Required: 7; Open postings: 5; First seen: 2026-10-07 - **Verilog** — Layer: languages; Postings: 7; Share: 0.0722; Required: 7; Open postings: 1; First seen: 2026-07-29 - **Configuration Management** — Layer: practices; Postings: 6; Share: 0.0619; Required: 6; Open postings: 1; First seen: 2026-07-21 - **GitLab** — Layer: cloud; Postings: 6; Share: 0.0619; Required: 6; Open postings: 0; First seen: 2026-07-09 - **GitLab CI** — Layer: cloud; Postings: 6; Share: 0.0619; Required: 6; Open postings: 2; First seen: 2026-07-21 - **PHP** — Layer: languages; Postings: 6; Share: 0.0619; Required: 4; Open postings: 0; First seen: 2026-07-28 - **OpenSearch** — Layer: data; Postings: 5; Share: 0.0515; Required: 5; Open postings: 1; First seen: 2026-07-16 - **OpenShift** — Layer: cloud; Postings: 5; Share: 0.0515; Required: 5; Open postings: 1; First seen: 2026-09-01 - **Oracle** — Layer: data; Postings: 5; Share: 0.0515; Required: 5; Open postings: 0; First seen: 2026-08-03 - **SystemVerilog** — Layer: languages; Postings: 5; Share: 0.0515; Required: 5; Open postings: 1; First seen: 2026-08-12 - **VHDL** — Layer: languages; Postings: 5; Share: 0.0515; Required: 5; Open postings: 0; First seen: 2026-07-17 - **Ansible** — Layer: tools; Postings: 5; Share: 0.0515; Required: 4; Open postings: 0; First seen: 2026-07-21 - **TypeScript** — Layer: languages; Postings: 5; Share: 0.0515; Required: 4; Open postings: 1; First seen: 2026-08-31 - **Java** — Layer: languages; Postings: 5; Share: 0.0515; Required: 3; Open postings: 1; First seen: 2026-09-01 - **Prometheus** — Layer: tools; Postings: 5; Share: 0.0515; Required: 3; Open postings: 0; First seen: 2026-07-09 - **AutoCAD** — Layer: tools; Postings: 4; Share: 0.0412; Required: 4; Open postings: 1; First seen: 2026-08-04 - **CUDA** — Layer: frameworks; Postings: 4; Share: 0.0412; Required: 4; Open postings: 3; First seen: 2026-09-18 - **MySQL** — Layer: data; Postings: 4; Share: 0.0412; Required: 4; Open postings: 1; First seen: 2026-08-05 - **OpenStack** — Layer: tools; Postings: 4; Share: 0.0412; Required: 4; Open postings: 1; First seen: 2026-07-21 - **PostgreSQL** — Layer: data; Postings: 4; Share: 0.0412; Required: 4; Open postings: 2; First seen: 2026-07-16 - **Unix** — Layer: cloud; Postings: 4; Share: 0.0412; Required: 4; Open postings: 0; First seen: 2026-07-21 - **Bash** — Layer: languages; Postings: 4; Share: 0.0412; Required: 3; Open postings: 1; First seen: 2026-08-19 - **Grafana** — Layer: cloud; Postings: 4; Share: 0.0412; Required: 3; Open postings: 1; First seen: 2026-07-09 - **Go** — Layer: languages; Postings: 4; Share: 0.0412; Required: 1; Open postings: 1; First seen: 2026-08-19 - **IAM** — Layer: practices; Postings: 3; Share: 0.0309; Required: 3; Open postings: 0; First seen: 2026-08-12 - **MATLAB** — Layer: languages; Postings: 3; Share: 0.0309; Required: 3; Open postings: 0; First seen: 2026-08-07 - **Microsoft Excel** — Layer: tools; Postings: 3; Share: 0.0309; Required: 3; Open postings: 1; First seen: 2026-09-04 - **Power BI** — Layer: cloud; Postings: 3; Share: 0.0309; Required: 3; Open postings: 0; First seen: 2026-08-06 - **Rest API** — Layer: tools; Postings: 3; Share: 0.0309; Required: 3; Open postings: 0; First seen: 2026-07-16 - **Spring Boot** — Layer: frameworks; Postings: 3; Share: 0.0309; Required: 3; Open postings: 0; First seen: 2026-09-01 - **WordPress** — Layer: tools; Postings: 3; Share: 0.0309; Required: 3; Open postings: 0; First seen: 2026-07-28 - **.NET** — Layer: cloud; Postings: 2; Share: 0.0206; Required: 2; Open postings: 1; First seen: 2026-09-07 - **AWS** — Layer: cloud; Postings: 2; Share: 0.0206; Required: 2; Open postings: 0; First seen: 2026-07-21 - **Airflow** — Layer: cloud; Postings: 2; Share: 0.0206; Required: 2; Open postings: 0; First seen: 2026-07-16 - **Angular** — Layer: frameworks; Postings: 2; Share: 0.0206; Required: 2; Open postings: 0; First seen: 2026-09-15 - **Apache Kafka** — Layer: cloud; Postings: 2; Share: 0.0206; Required: 2; Open postings: 0; First seen: 2026-07-21 - … 66 more in the JSON form ## Changes ### First appeared - **Vue.js** — First seen: 2026-10-16 - **CATIA** — First seen: 2026-10-07 ### Rising - **C++** — Share from: 11; Share to: 27 - **CATIA** — Share from: 0; Share to: 10 - **OpenShift** — Share from: 0; Share to: 7 - **TypeScript** — Share from: 0; Share to: 7 - **Java** — Share from: 0; Share to: 7 - **HPC** — Share from: 7; Share to: 13 - **CUDA** — Share from: 0; Share to: 6 - **Bash** — Share from: 0; Share to: 6 ### Falling - **Linux** — Share from: 59; Share to: 24 - **Git** — Share from: 26; Share to: 11 - **Puppet** — Share from: 19; Share to: 4 - **Ansible** — Share from: 15; Share to: 1 - **Prometheus** — Share from: 15; Share to: 1 - **SQL** — Share from: 19; Share to: 7 - **Configuration Management** — Share from: 15; Share to: 3 - **VHDL** — Share from: 11; Share to: 3 ## Similar stacks - [Chenega](https://alion.io/company/chenega/technologies) — Shared technologies: 83 - [Baker Hughes](https://alion.io/company/bakerhughes/technologies) — Shared technologies: 83 - [GRVTY](https://alion.io/company/grvty/technologies) — Shared technologies: 92 - [Vinci](https://alion.io/company/vinci-4/technologies) — Shared technologies: 82 - [Lawrence Livermore National Laboratory](https://alion.io/company/llnl/technologies) — Shared technologies: 80 - [Renault Group](https://alion.io/company/alliancewd/technologies) — Shared technologies: 82 - [Dell Technologies](https://alion.io/company/dell-technologies/technologies) — Shared technologies: 99 - [MITRE](https://alion.io/company/mitre/technologies) — Shared technologies: 89 --- [Page](https://alion.io/company/cern/technologies) · [JSON](https://alion.io/company/cern/technologies.json) Source: Alion (alion.io), 2026-11-11. 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