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intro: who uses clojure page
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‎docs/introduction/who-uses-clojure.md

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# Who uses Clojure
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[Hundreds of companies](http://clojure.org/community/companies) actively advertised their Clojure adoption. Given the broad participation in user groups there are many more organizations using Clojure within their technology stack.
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A quick scan of various job sites shows Clojure positions at companies like Walmart, Facebook, Staples, Consumer Reports, Salesforce, and Amazon. It doesn't get much more mainstream than that.
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## Case Studies
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[JUXT Clojure In](https://www.juxt.pro/clojure-in/) is a Clojure consultancy company and has interviewed numerous CTO's and Tech Leads, discussing the advantages of using Clojure to solve business challenges.
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[Clojure.org Community Stories](https://clojure.org/community/community_stories) also provides insights into companies using Clojure.
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## Interesting Companies
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[:globe_with_meridians: Functional Works](https://functional.works-hub.com/){target=_blank} a recruitment company focused on functional programming jobs and built their job management platform on Clojure and ClojureScript.
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A diverse set of example companies using Clojure for development. Many more can be found at [Clojure.org Companies list](https://clojure.org/community/companies), [Clojure.org Community Stories](https://clojure.org/community/community_stories) and [JUXT Clojure In](https://www.juxt.pro/clojure-in/).
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| Company | Type of applications |
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|----------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| Boeing | [Boeing 737 MAX - onboard maintenance](https://www.youtube.com/watch?v=iUC7noGU1mQ) |
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| Puppet Labs | DevOps apps & services e.g. trapperkeeper |
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| Cisco | Malware analysis & threat intelligence platform (expert system with core.logic) |
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| Deuche Bank (UK) | [Processing event streams](http://blog.malcolmsparks.com/) from [Apache Storm](https://storm.apache.org/) |
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| Atlassian | Collaborative editing platform for all their products |
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| Netflix | Map-Reduce languages for writing apps for Hadoop / Pig |
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| USwitch (UK) | Creating meaningful data from multiple sources |
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| Daily Mail Online (UK) | Publishing pipeline |
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| Circle CI (USA) | [Front-end of CI server](https://github.com/circleci/frontend) in ClojureScript & [test suite](https://circleci.com/blog/rewriting-your-test-suite-in-clojure-in-24-hours/) |
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| CitiGroup | Financial Trading |
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| Student Loans company (UK) | Loans management system written in Clojure |
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| LinkedIn | Powers the LinkedIn social graph |
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| Walmart (USA) | eReceipts project to process every purchase from 5,000+ stores |
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| SwiftKey (UK) | Predictive intelligence platform (possibly used with Microsoft Cortana) |
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| Roomkey.co.uk | [Hotel booking system to rival Expedia](http://www.colinsteele.org/post/23103789647/against-the-grain-aws-clojure-startup) (with a tiny development team) |
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| Funding Circle (UK & USA) | Adopting Clojure as their main language (from Ruby, etc) |
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| Braintree | [Payment processing pipeline with Kafka](https://www.youtube.com/watch?v=0D3jev1E5ks) |
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| Mastodon C | Data centre analysis (Incanta, Storm) |
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| Thoughtworks | Agile development for Client projects world wide |
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| Vero Insurance (AUS) | Rebuilt policy management system in Clojure with Thoughworks |
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| Meta-X | Performance art (Overtone, Quil) |
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| Salesforce (USA) | Build & deployment with [Puppet](https://github.com/puppetlabs/puppetserver) & Application Routing with [nginx-clojure](https://nginx-clojure.github.io) |
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There are many more examples of projects on the HackerNews thread: [Ask HN: Who's using Clojure in Production](https://news.ycombinator.com/item?id=8549823)
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## Tech Radar
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Clojure is also defined as a technology that can be adopted since 2014, according to the Thoughtworks technology radar.
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![Thoughtworks Technology Radar](https://raw.githubusercontent.com/practicalli/graphic-design/live/clojure/thoughtworks-tech-radar.png)
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JUXT also created its own [Clojure specific technology radar](https://juxt.pro/radar.html) as there is such an encompassing ecosystem of libraries and services.

‎mkdocs.yml

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- introduction/concepts/index.md
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- Functional vs Imperative: introduction/concepts/what-is-functional-programming.md
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- From The Author: introduction/concepts/from-the-author.md
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- Who Uses Clojure: introduction/who-uses-clojure.md
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- Contributing: introduction/contributing.md
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- Writing Tips: introduction/writing-tips.md

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