# RELX - **Answer**: RELX builds mostly with Python, SQL, JavaScript, Java. Its stack also includes AWS, Azure, Snowflake, Spring Boot. Python is named in 202 of the 641 job postings RELX published in the last 12 months (32%). Counted by Alion from the job postings of RELX, updated Nov 12, 2026. - **Window days**: 365 - **Postings analysed**: 641 - **Open postings**: 286 - **Technologies in use**: 375 - **Modernity score**: 78 - **Ai adoption**: yes - **License**: CC BY-SA 4.0 ## Company - **Id**: 3770 - **Name**: RELX - **Domain**: relx.com - **Url**: ## Technologies - **Python** — Layer: languages; Postings: 202; Share: 0.3151; Required: 190; Open postings: 99; First seen: 2025-08-18 - **SQL** — Layer: languages; Postings: 182; Share: 0.2839; Required: 169; Open postings: 67; First seen: 2025-08-18 - **AWS** — Layer: cloud; Postings: 160; Share: 0.2496; Required: 148; Open postings: 64; First seen: 2025-09-04 - **CI/CD** — Layer: practices; Postings: 142; Share: 0.2215; Required: 139; Open postings: 50; First seen: 2026-05-12 - **Azure** — Layer: cloud; Postings: 127; Share: 0.1981; Required: 109; Open postings: 59; First seen: 2025-09-04 - **Machine Learning** — Layer: practices; Postings: 117; Share: 0.1825; Required: 101; Open postings: 55; First seen: 2024-11-29 - **JavaScript** — Layer: languages; Postings: 97; Share: 0.1513; Required: 84; Open postings: 39; First seen: 2025-11-19 - **LLM** — Layer: ai; Postings: 95; Share: 0.1482; Required: 90; Open postings: 45; First seen: 2025-09-12 - **AI Agents** — Layer: practices; Postings: 93; Share: 0.1451; Required: 87; Open postings: 51; First seen: 2026-05-12 - **Kubernetes** — Layer: cloud; Postings: 76; Share: 0.1186; Required: 63; Open postings: 31; First seen: 2026-05-22 - **RAG** — Layer: practices; Postings: 70; Share: 0.1092; Required: 67; Open postings: 36; First seen: 2025-09-12 - **Terraform** — Layer: tools; Postings: 69; Share: 0.1076; Required: 60; Open postings: 32; First seen: 2026-06-02 - **Java** — Layer: languages; Postings: 68; Share: 0.1061; Required: 56; Open postings: 28; First seen: 2026-03-31 - **Microsoft Excel** — Layer: tools; Postings: 62; Share: 0.0967; Required: 62; Open postings: 31; First seen: 2025-10-10 - **Power BI** — Layer: cloud; Postings: 61; Share: 0.0952; Required: 53; Open postings: 24; First seen: 2025-06-02 - **Docker** — Layer: tools; Postings: 59; Share: 0.092; Required: 51; Open postings: 23; First seen: 2026-05-22 - **Windows** — Layer: cloud; Postings: 58; Share: 0.0905; Required: 54; Open postings: 26; First seen: 2026-05-14 - **Copilot** — Layer: tools; Postings: 54; Share: 0.0842; Required: 46; Open postings: 20; First seen: 2026-07-02 - **C#** — Layer: languages; Postings: 53; Share: 0.0827; Required: 33; Open postings: 25; First seen: 2026-05-14 - **GitHub Actions** — Layer: cloud; Postings: 52; Share: 0.0811; Required: 48; Open postings: 25; First seen: 2026-06-02 - **Tableau** — Layer: cloud; Postings: 50; Share: 0.078; Required: 44; Open postings: 15; First seen: 2025-10-30 - **NLP** — Layer: practices; Postings: 47; Share: 0.0733; Required: 45; Open postings: 27; First seen: 2024-11-29 - **GitHub** — Layer: cloud; Postings: 45; Share: 0.0702; Required: 43; Open postings: 12; First seen: 2026-04-06 - **GCP** — Layer: cloud; Postings: 45; Share: 0.0702; Required: 39; Open postings: 15; First seen: 2025-09-04 - **Linux** — Layer: cloud; Postings: 43; Share: 0.0671; Required: 40; Open postings: 22; First seen: 2026-06-04 - **Claude** — Layer: ai; Postings: 41; Share: 0.064; Required: 33; Open postings: 17; First seen: 2026-06-08 - **TypeScript** — Layer: languages; Postings: 40; Share: 0.0624; Required: 36; Open postings: 14; First seen: 2026-06-11 - **Git** — Layer: tools; Postings: 40; Share: 0.0624; Required: 35; Open postings: 17; First seen: 2026-06-02 - **.NET** — Layer: cloud; Postings: 39; Share: 0.0608; Required: 37; Open postings: 18; First seen: 2026-05-14 - **Prompt Engineering** — Layer: practices; Postings: 38; Share: 0.0593; Required: 33; Open postings: 20; First seen: 2025-09-12 - **Databricks** — Layer: cloud; Postings: 37; Share: 0.0577; Required: 35; Open postings: 15; First seen: 2026-06-04 - **C++** — Layer: languages; Postings: 35; Share: 0.0546; Required: 34; Open postings: 16; First seen: 2026-05-14 - **Rest API** — Layer: tools; Postings: 35; Share: 0.0546; Required: 34; Open postings: 16; First seen: 2026-05-15 - **Embeddings** — Layer: practices; Postings: 32; Share: 0.0499; Required: 32; Open postings: 17; First seen: 2026-06-03 - **Agentic Workflows** — Layer: practices; Postings: 32; Share: 0.0499; Required: 29; Open postings: 15; First seen: 2026-06-05 - **Snowflake** — Layer: data; Postings: 31; Share: 0.0484; Required: 30; Open postings: 12; First seen: 2026-06-09 - **ChatGPT** — Layer: ai; Postings: 31; Share: 0.0484; Required: 25; Open postings: 16; First seen: 2026-05-12 - **Unix** — Layer: cloud; Postings: 30; Share: 0.0468; Required: 26; Open postings: 11; First seen: 2026-05-14 - **Incident Management** — Layer: practices; Postings: 29; Share: 0.0452; Required: 25; Open postings: 14; First seen: 2026-05-22 - **Spring Boot** — Layer: frameworks; Postings: 27; Share: 0.0421; Required: 26; Open postings: 12; First seen: 2026-06-10 - **Amazon S3** — Layer: cloud; Postings: 27; Share: 0.0421; Required: 24; Open postings: 8; First seen: 2026-06-08 - **Knowledge Graph** — Layer: practices; Postings: 27; Share: 0.0421; Required: 21; Open postings: 16; First seen: 2026-06-03 - **Azure DevOps** — Layer: cloud; Postings: 26; Share: 0.0406; Required: 24; Open postings: 13; First seen: 2026-02-12 - **Apache Kafka** — Layer: cloud; Postings: 26; Share: 0.0406; Required: 22; Open postings: 10; First seen: 2026-06-08 - **Spark** — Layer: cloud; Postings: 26; Share: 0.0406; Required: 19; Open postings: 9; First seen: 2026-05-12 - **ETL/ELT** — Layer: practices; Postings: 25; Share: 0.039; Required: 23; Open postings: 6; First seen: 2026-03-31 - **PowerShell** — Layer: languages; Postings: 24; Share: 0.0374; Required: 18; Open postings: 13; First seen: 2026-06-02 - **Node JS** — Layer: languages; Postings: 23; Share: 0.0359; Required: 23; Open postings: 6; First seen: 2025-11-19 - **Jenkins** — Layer: tools; Postings: 23; Share: 0.0359; Required: 21; Open postings: 8; First seen: 2026-06-02 - **LangChain** — Layer: frameworks; Postings: 23; Share: 0.0359; Required: 21; Open postings: 9; First seen: 2026-06-03 - … 325 more in the JSON form ## Changes ### First appeared - **Alteryx** — First seen: 2026-10-16 - **OpenSSL** — First seen: 2026-10-07 - **EU AI Act** — First seen: 2026-10-06 - **Gearset** — First seen: 2026-09-30 - **Puppet** — First seen: 2026-09-23 - **HashiCorp Vault** — First seen: 2026-09-23 - **CAPA** — First seen: 2026-09-23 - **FAISS** — First seen: 2026-09-18 ### Rising - **GitHub Actions** — Share from: 3; Share to: 11 - **Terraform** — Share from: 8; Share to: 12 - **Microsoft Excel** — Share from: 7; Share to: 11 - **Copilot** — Share from: 6; Share to: 10 - **Rest API** — Share from: 3; Share to: 7 - **Linux** — Share from: 5; Share to: 8 - **C++** — Share from: 3; Share to: 6 - **Amazon CloudWatch** — Share from: 1; Share to: 4 ### Falling - **Spark** — Share from: 8; Share to: 2 - **Knowledge Graph** — Share from: 8; Share to: 3 - **Tableau** — Share from: 11; Share to: 7 - **GitHub** — Share from: 10; Share to: 6 - **Snowflake** — Share from: 8; Share to: 4 - **Databricks** — Share from: 8; Share to: 5 ## Similar stacks - [LexisNexis](https://alion.io/company/lexisnexis-legal/technologies) — Shared technologies: 214 - [Elsevier](https://alion.io/company/elsevier/technologies) — Shared technologies: 197 - [LexisNexis Risk Solutions](https://alion.io/company/lexisnexisrisk/technologies) — Shared technologies: 193 - [Genpact](https://alion.io/company/genpact/technologies) — Shared technologies: 278 - [State Street](https://alion.io/company/state-street/technologies) — Shared technologies: 287 - [Deloitte](https://alion.io/company/deloitte/technologies) — Shared technologies: 290 - [Brillio](https://alion.io/company/brillio/technologies) — Shared technologies: 268 - [UnitedHealth Group](https://alion.io/company/unitedhealthgrp/technologies) — Shared technologies: 307 --- [Page](https://alion.io/company/relx/technologies) · [JSON](https://alion.io/company/relx/technologies.json) Source: Alion (alion.io), 2026-11-12. 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