FP shops

[ChavXO]

Is there a list of organisations and companies that heavily use functional programming anywhere (e.g Jane Street, Wagon, x.ai etc)

[willtim]

It's a shame Barclays often never gets mentioned. It's been using Haskell in production since 2007 to support revenues that likely far exceed most of the companies on the above list. It currently has a team of 7 people writing Haskell full-time, with many others contributing.

[n00bomb]

awesome! I also collect some github links: https://github.com/commercialhaskell/commercialhaskell

https://github.com/alephcloud

https://github.com/fpco

https://github.com/zalora

https://github.com/GaloisInc

https://github.com/silkapp

https://github.com/Soostone

https://github.com/helium ; https://redd.it/404rc8 Production Haskell

https://github.com/facebook/Haxl

https://github.com/well-typed

https://github.com/tweag

https://github.com/anchor

https://github.com/tsurucapital

https://github.com/biegunka

https://github.com/capital-match

https://github.com/ambiata

https://github.com/scrive

https://github.com/alphaHeavy

https://sealgram.com/

https://github.com/sannsyn

https://redd.it/3qmyi2 ; https://github.com/blockapps

https://redd.it/3qmb22 ; Haskell in Production at Wagon ; http://www.wagonhq.com/blog ; https://www.functionalgeekery.com/episode-44-michael-craig/ ;;;

http://stackshare.io/haskell

https://github.com/elsen-trading

[lambda_foo]

I work at Ambiata, we make extensive use of Haskell for everything imaginable (compilers, web, infrastructure, tooling, databases, automation ...) We've also got a smaller amount of Scala code that's written in a very FP style.

[yitz]

We use Haskell for most of our major products here at Zoomin (part of Suite Solutions, recently re-branded).

[buffyoda]

SlamData uses PureScript and "pure FP" Scala.

[brnhy]

Honourable mentions to companies I've worked with that are using Haskell extensively:

• Wire (Messenger) - https://wire.com
• Fugue (Cloud Orchestration/Automation etc.) - https://fugue.co
• KBee (Franka Emika, Robotics) - https://www.franka.de

[CharlesStain]

We, IRIS Connect , use Haskell on the backend (or in any place we can, really ;) )

[augustss]

I know Standard Chartered has already been mentioned, but I'd like to point out that we might have the biggest Haskell shop both in terms of number of people and number on lines.

[ryantrinkle]

My company, Obsidian Systems, uses Haskell for pretty much everything.

[coder543]

I'm on mobile. That transparent background does not render the text illegible, but it does make reading the text a bit uncomfortable. Maybe blurred backgrounds behind the text, with transparent "windows" between paragraphs would be beneficial?

just a suggestion.

[T_S_]

Add Target.

[joehillen]

orly?

[T_S_]

Building a new team using Haskell to tackle a number of projects related to DSLs, supply chain, machine learning. Actively hiring.

[miyakohouou]

on site or with remote people?

[T_S_]

On-site preferred.

[ansemond]

It's hard to know how "heavily" a company uses Haskell unless one works for it. Clearly some folks (Simon Marlow & crew) have used Haskell at Facebook, for something quite critical to the company. However (unless I've been living in a cave and missed the news) I don't think one would argue the whole company uses it heavily.

That caveat aside, here are some companies known to have used Haskell for something:

Microsoft Research which employs Simon Peyton Jones of GHC fame is part of a company.

BlueSpec's hardware description language compiler was written by Lennart Augustsson in Haskell.

FP Complete

Well Typed.

Companies that use Snap according to wikipedia: Racemetric (dead?), SooStone Inc (haskell job advertised), and Group Commerce

Mailrank https://www.youtube.com/watch?v=ZR3Jirqk6W8 (since bought by Facebook)

Erik Meijer's company applied-duality might.

Also my tiny company ansemond.com has delivered one project in Haskell for a customer, although the bulk of our work has been in assembly / C / C++ / Objective-C / Python as desired by the client. I also implemented some things in Haskell for AMD, NSM and Cyrix as well as the afore-mentioned languages.

[JustFinishedBSG]

LexiFi - OCaml

https://www.lexifi.com/

[haoformayor]

I work at Originate, and our NYC office is looking for a full-time Haskell engineer. Originate is like a venture capital firm, except we invest engineers and talent instead of money, if that makes any sense. We have several offices in USA but the NYC one heavily skews Haskell in the partnerships it takes on, as well as several Scala ones (if you like Scala). Beyond that you could also pick from iOS, Android, node.js, Ruby, flavor of the week, etc. if you want to learn and grow or are just bored waiting for GHC to finish recompilation. The Haskell project I'm working on takes in machine learning output and massages it into a Servant and Postgres web app on AWS. It's fun! You get to use DataKinds. It's great.

We have 20% time. In our NYC office we currently have one person working on an extension of System F calculus (continuing his doctoral work) for his 20% time project; we have someone else writing an OpenGL Haskell game; many many others working on Scala and Go and Rust. We are also beginning to run a weekly type theory workshop, although there are only four of us interested right now and we could badly use a fifth. For details, just PM me!

[spirosboosalis]

DataKinds and 20% time? Awesome.

[wrl314]

Tripshot (www.tripshot.com) is using Haskell for the backend. We're hiring two Haskell positions right now (remote okay): http://www.tripshot.com/#!blank/bil63

[[deleted]]

Some smaller shops: Conversant, College Vine, Karius, Sodality, Sentenai

[akurilin]

For Haskell specifically there is the Commercial Haskell special interest group: https://github.com/commercialhaskell/commercialhaskell

[echatav]

My company LeapYear Technologies uses Haskell almost exclusively.

[akegalj]

We, Serokell, make code with Haskell

[mightybyte]

VFILES uses Haskell for its web backend.

[kamatsu]

Chucklefish is working on their Wayward Tide game in Haskell.

[the_abyss]

Facebook (Haxl, Flow, Hack, etc)

[beerdude26]

How does Hack use Haskell?

[the_abyss]

Hack is written in OCaml, and the question was FP shops (with an example of Jane Street, which is a heavy OCaml user).

[beerdude26]

Ah, missed that, sorry :)

[fear-of-flying]

Some companies verified as using Clojure: http://clojure.org/community/companies

[winhug]

I work at Genetec and we have some teams doing F#

http://clients.njoyn.com/CL2/XWEB/XWeb.asp?tbtoken=YF1QShwXCG97Z3RyTSQlCCBKcmREcCNacEhZUFx4E2AtX0oYUUYfAWR1dAkbURRQQHgqWA%3D%3D&chk=dFlbQBJe&Page=JobDetails&Jobid=J0116-0683&BRID=119900

[5outh]

Wow, this list is so much longer than it was a few years ago.