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startups-list.csv
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Company;Backend Programming Language Launch;Year when was founded;Money raised so far;Money raised so far;Nr of employees;Rank;List;Backend Programming Language now;Source1;Source2;Source3;Source4;Source5
AirBnb;Ruby on Rails;2008;4400;$4.4B ;1001-5000;1;YCombinator;Ruby on Rails;https://www.crunchbase.com/organization/airbnb;https://www.forbes.com/sites/quora/2018/02/20/what-technology-stack-does-airbnb-use/#a1b591b4025c;https://www.slideshare.net/RohanKhude/technology-stack-behind-airbnb;#;#
SendGrid;Perl;2009;80,4;$80.4M;251-500;1;TechStars;Go;https://sendgrid.com/blog/convince-company-go-golang/;#;#;#;#
Stripe;Ruby;2011;793; $793M;1001-5000;2;YCombinator;Ruby;https://www.quora.com/What-programming-languages-does-Stripe-use-to-process-payments-front-and-back-end;https://www.quora.com/Why-did-Stripe-choose-to-use-Ruby-for-its-backend-language;#;#;#
PillPack;Ruby on Rails;2013;117,8;$117.8M;101-250;2;TechStars;Ruby on Rails;https://stackshare.io/pillpack/pillpack;https://www.linkedin.com/jobs/view/software-development-engineer-at-pillpack-1112236525;https://www.linkedin.com/jobs/view/software-development-engineer-at-pillpack-934428508;https://www.quora.com/What-are-some-websites-built-with-Ruby-on-Rails;#
Plated;Ruby on Rails;2013;117,8;$117.8M;101-250;2;TechStars;Ruby on Rails;https://angel.co/plated/jobs/280115-software-engineer;https://stackshare.io/plated/plated;https://news.ycombinator.com/item?id=7507870;#;#
GetCruise.com;Python;2013;3400;$3.4B (including acquisition);501-1000;3;YCombinator;Python;https://www.linkedin.com/jobs/view/staff-software-engineer-ground-truth-at-cruise-automation-1109489599;#;#;#;#
DigitalOcean;Ruby on Rails, Go;2011;305,4;$305.4M;251-500;3;TechStars;Go/ Ruby on Rails;https://www.digitalocean.com/community/questions/what-language-was-used-to-build-digitalocean;https://stackshare.io/digitalocean/digitalocean;#;#;#
Dropbox;Python;2007;1700;$1.7B;1001-5000;4;YCombinator;Python/ Go;https://www.quora.com/What-programming-languages-are-used-at-Dropbox-product;https://www.wired.com/2012/12/dropbox-van-rossum/;https://www.dropboxforum.com/t5/Installation-and-desktop-app/Dropbox-Development-Language/td-p/192136;https://www.pythonpeople.nl/how-python-powers-dropbox/;https://blogs.dropbox.com/tech/2014/07/open-sourcing-our-go-libraries/
DataRobot;Python, R;2012;224,6;$224.6M;251-500;4;TechStars;Python/ R;https://www.builtinboston.com/job/data/machine-learning-engineer-core-modeling/20335;https://angel.co/datarobot;#;#;#
Coinbase;Ruby on Rails;2012;546;$546M;251-500;5;YCombinator;Ruby on Rails;https://www.quora.com/What-programming-languages-are-used-at-Coinbase;https://stackshare.io/coinbase/coinbase;#;#;#
Zipline;C++, Python;2011;40,6;$40.6M;11-50;5;TechStars;C++/ Python ;https://www.reddit.com/r/IAmA/comments/6ix6nx/we_are_engineers_from_zipline_and_today_we_made/;https://www.linkedin.com/jobs/view/full-stack-software-engineer-at-zipline-international-inc-1151326700;https://jobs.lever.co/flyzipline/6820694b-dfb8-4961-8a99-4b56e43b1540;#;#
Instacart;Ruby on Rails;2012;1900;$1.9B;101-250;6;YCombinator;Python;https://www.mobindustry.net/the-technology-behind-instacart/;https://stackshare.io/posts/the-tech-behind-instacarts-grocery-delivery-service;#;#;#
Outreach;Ruby on Rails;2013;125;$125M;251-500;6;TechStars;Ruby on Rails (primarily)/ Go/ Elixir/ Node;https://jobs.lever.co/outreach/ed51d8d3-7470-4161-a9dc-ba1ffcc5967e;We primarily use Ruby on Rails on the back-end, though there are services written in Go, Node and Elixir.;https://jobs.lever.co/outreach/6094c836-f83d-4831-8cc6-2bd72258b7d7;#;#
Machine Zone;PHP;2008;263,3;$263.3M;501-1000;7;YCombinator;PHP;https://stackshare.io/machine-zone/machine-zone;#;#;#;#
Remitly;Java;2011;200;$200M;251-500;7;TechStars;Java;https://www.remitly.com/at/en/careers/1147573;https://www.remitly.com/us/en/careers/1140617?gh_jid=1140617;https://ph.linkedin.com/jobs/view/senior-java-developer-at-remitly-686514590;#;#
DoorDash;Python;2013;1400;$1.425;251-500;8;YCombinator;Python;https://medium.com/@DoorDash/implementing-rest-apis-with-embedded-privacy-a2394dc4dceb;#;#;#;#
ClassPass;Java, Python;2013;239;$239M;101-250;8;TechStars;Java/ Python;https://startup.jobs/177327-backend-engineer-at-classpass;https://startup.jobs/backend-engineer-at-classpass;We are transitioning to a microservices based architecture from a single API. Our new architecture uses React and Node for the web, Swift for iOS, and Python and Java on the backend.;#;#
Zenefits;Python with Django;2013;583,6;$583.6M ;501-1000;9;YCombinator;Python with Django;https://www.quora.com/What-is-the-software-stack-of-Zenefits;https://www.hackerrank.com/zenhacks-old/;#;#;#
Leanplum;Java;2012;98,3;$98.3M;101-250;9;TechStars;Java;https://www.linkedin.com/jobs/view/senior-product-manager-at-leanplum-1074588496;Our highly scalable backends are writing in Java.;#;#;#
Gusto;Ruby on Rails;2011;316,1;$316.1M;501-1000;10;YCombinator;Ruby on Rails, Go;https://engineering.gusto.com/a-day-in-the-life/;https://stackshare.io/gusto/gusto;#;#;#
SalesLoft;Ruby on Rails, Elixir with Phoenix;2011;75,7;$75.7M;251-500;10;TechStars;Ruby on Rails/ Elixir with Phoenix;https://salesloft.com/careers/?gh_jid=1530409;We develop mostly in Ruby, Elixir and JavaScript, but care more about software engineering concepts than specific language wars.;https://salesloft.com/careers/?gh_jid=1522429;#;#
Reddit;Lisp;2005;550,1;$550.1M ;101-250;11;YCombinator;Python;https://forums.tomsguide.com/threads/what-computer-language-is-reddit-written-in.350970/;https://www.quora.com/What-programming-languages-are-used-at-Reddit;https://github.com/reddit-archive;https://www.reddit.com/r/programming/comments/13ccbh/reddit_was_originally_written_in_lisp_when_it_was/;#
Placester;PHP;2008;100,9;$100.9M;101-250;11;TechStars;PHP;https://stackshare.io/placester/placester;https://support.placester.com/hc/en-us/articles/204512535-The-Placester-Platform-versus-WordPress;While not a traditional WordPress dashboard, the Placester interface is an overlay on WordPress, meaning the site still has much of the WordPress functionality without exposing the traditional WordPress back end.;#;#
PagerDuty;Ruby on Rails;2009;173,6;$173.6M;251-500;12;YCombinator;Elixir;https://www.pagerduty.com/blog/elixir-at-pagerduty/;#;#;#;#
Degreed;C#;2012;78,2;$78.2M;101-250;12;TechStars;C#;https://jobs.lever.co/degreed/a4dbaabe-82c6-4894-96b9-61e989f59cf0;https://jobs.lever.co/degreed/96a83e50-1e41-46d5-b8cf-63529924df74;#;#;#
Docker;Go;2010;272,9;$272.9M ;101-250;13;YCombinator;Go;https://thenewstack.io/go-programming-language-helps-docker-container-ecosystem/;https://www.quora.com/Why-was-Docker-written-in-Go;#;#;#
FullContact;Java, Python;2010;55,1;$55.1M;251-500;13;TechStars;Java/ Python;https://angel.co/fullcontact/jobs/320895-senior-software-engineer;https://fullcontact.applytojob.com/apply/jobs/details/hpvtFgqMy4?;We work with some of the hottest tech on the block: Python, Django, Java, Scala, Clojure, ES6/7, React/Redux, Hadoop, Spark, Storm, Cassandra, Kafka, HBase, ElasticSearch, Redis, RabbitMQ just to name a few.;https://fullcontact.applytojob.com/apply/jobs/details/HqrxQKRm2l?;https://angel.co/fullcontact/jobs/330180-senior-devops-engineer-with-sw-eng-background-lead-role-possible
Ginkgo Bioworks;Python, Ruby on Rails;2009;429,1;$429.1M ;101-250;14;YCombinator;Python/ Ruby on Rails;https://www.linkedin.com/jobs/view/software-engineering-intern-summer-2019-at-ginkgo-bioworks-inc-1110112614;https://github.com/ginkgobioworks;http://www.charlesfracchia.com/assets/files/charlesfracchia_resume.pdf;#;#
TradingView;Pine, Node.js, Python with Django;2011;40,8;$40.8M;101-250;14;TechStars;Pine/ Node.js/ Python with Django;https://www.quora.com/What-framework-is-tradingview-com%E2%80%99s-charting-editor-UI-written-in;https://www.tradingview.com/blog/en/tradingview-s-pine-script-introduction-203/;We use Python, Django, JavaScript among other technologies.;https://angel.co/jobs?slug=tradingview-1;https://stackshare.io/tradingview/tradingview
Rappi.com;PHP;2015;392;$392M;1001-5000;15;YCombinator;PHP;#;#;#;#;#
Localytics;Scala, Python, Go;2009;69,8;$69.8M;101-250;15;TechStars;Scala/ Python/ Go;https://www.linkedin.com/jobs/view/senior-software-engineer-platform-api-at-localytics-913814533;https://boards.greenhouse.io/localytics/jobs/1401987;Our distributed systems are built in Scala/Java and Go using SQS, Docker/ECS, AWS, DynamoDB, RDS, and the Snowflake Cloud Data Warehouse;#;#
Brex.com;Elixir;2017;182; $182M;51-100;16;YCombinator;Elixir;https://medium.com/brexeng/why-brex-chose-elixir-fe1a4f313195;#;#;#;#
Distil Networks;PHP, Python;2011;59;$59M;101-250;16;TechStars;PHP/ Python;https://stackshare.io/distil-networks/distil-networks;https://www.linkedin.com/in/enginakyol;https://jobs.lever.co/distilnetworks/e47c7c17-5cc2-4760-8e96-9821846c3e00;#;#
GitLab.com;Ruby on Rails;2014;165,5;$165.5M;251-500;17;YCombinator;Ruby on Rails;#;#;#;#;#
Twitch;Ruby on Rails;2007;35;$35M;251-500;18;YCombinator;Ruby on Rails, Go;https://blog.twitch.tv/twitch-engineering-an-introduction-and-overview-a23917b71a25;https://www.quora.com/In-which-language-is-Twitch-written;#;#;#
Threat Stack;Node.js, Scala, Python, Rust;2012;72,3;$72.3M;101-250;18;TechStars;Node.js/ Scala/ Python/ Rust;https://www.threatstack.com/blog/how-we-integrated-rust-into-threat-stacks-operations-workflow;Our platform is built in Node.js, Scala, and python;https://angel.co/threat-stack/jobs/22747-platform-backend-developer;https://www.threatstack.com/careers/sr-platform-engineer;#
Flexport;Ruby on Rails;2013;1300;$1.3B;501-1000;19;YCombinator;Ruby on Rails;https://medium.com/@flexportinc/getting-to-know-flexport-engineering-uri-benaya-febd32517366;https://www.flexport.com/careers/job/1007116;https://www.linkedin.com/jobs/view/software-engineering-intern-fall-2019-at-flexport-1077181100;https://stackshare.io/flexport/flexport;#
Synack;Ruby on Rails;2013;60,3;$60.3M;101-250;19;TechStars;Ruby on Rails;https://www.synack.com/company/careers/1599172/;https://angel.co/synack/jobs/509013-senior-backend-engineer;#;#;#
Mixpanel;Erlang;2009;77;$77M;251-500;20;YCombinator;Python;https://engineering.mixpanel.com/2011/08/05/how-and-why-we-switched-from-erlang-to-python/;#;#;#;#
Occipital ;C++;2008;71;$71M;11-50;20;TechStars;C++;https://occipital.com/jobs;#;#;#;#
Checkr;Ruby;2014;149;$149M ;101-250;21;YCombinator;Ruby on Rails;https://angel.co/checkr/jobs/117982-back-end-engineer;https://engineering.checkr.com/yet-another-attempt-at-faster-builds-caching-db-schema-efe63d367f5;#;#;#
Owlet Baby Care;Python;2013;48;$48M;51-100;21;TechStars;Python;https://www.linkedin.com/jobs/view/senior-platform-engineer-at-owlet-baby-care-1119616965;https://owletbabycare.applytojob.com/apply/6NY7iQ2oDO/Senior-Platform-Engineer;#;#;#
Optimizely;Python;2009;146,2;$146.2M;251-500;22;YCombinator;Python;https://jobs.smartrecruiters.com/Optimizely/743999683701204;https://github.com/optimizely/;#;#;#
Realty Mogul;Python;2012;45,1;$45.1M;51-100;22;TechStars;Python;https://angel.co/realty-mogul/jobs/246783-full-stack-developer;https://startupcto.io/job/realtymogul-com-greater-la-area-6-realtymogul-com-full-stack-developer/;#;#;#
LendUp;Java, Python;2011;361,5;$361.5M;101-250;23;YCombinator;Java/ Python;https://github.com/lendup/;https://startup.jobs/58073-software-engineer-back-end-at-lendup;https://clojure.org/stories/lendup;#;#
Bluecore;Python;2013;63,2;$63.2M;101-250;23;TechStars;Python;While our stack consists primarily of Python on the backend and React on the frontend, we see technology as a means to solving problems ;https://jobs.lever.co/bluecore/ae41ddb5-74a7-423a-9a55-6848c4fbef7f;#;#;#
Segment;Go;2011;108,7;$108.7M;251-500;24;YCombinator;Go;https://segment.com/blog/allocation-efficiency-in-high-performance-go-services/;https://segment.com/jobs/1534132-Software-Engineer-Distributed-Systems/;https://github.com/segmentio;#;#
Amino;Java;2014;72,4;$72.4M;51-100;24;TechStars;Java;https://github.com/AminoApps;#;#;#;#
uBiome;Python;2012;109,9;$109.9M;11-50;25;YCombinator;Python;https://pypi.org/project/ubiome/0.5.9/;https://ubiome.com/blog/post/analyze-ubiome-results-python/;https://github.com/ubiome-opensource;#;#
GoSpotCheck;Ruby on Rails;2011;47,5;$47.5M;11-50;25;TechStars;Ruby on Rails (Scala, Elixir, Go);https://stackoverflow.com/jobs/companies/gospotcheck;https://github.com/gospotcheck;#;#;#
Memebox;Go;2012;191,7;$191.7M;251-500;26;YCombinator;Go/ Python;https://stackshare.io/memebox/memebox;https://angel.co/memebox/jobs/258437-senior-backend-engineer;#;#;#
GrabCAD;Ruby on Rails, C#;2009;13,6;$13.6M;11-50;26;TechStars;Ruby on Rails/ C#;https://stackshare.io/grabcad/grabcad;https://careers.stratasys.com/requisition.html?id=26701;#;#;#
Zapier;Python with Django;2011;1,3;$1.3M ;101-250;27;YCombinator;Python with Django;https://zapier.com/engineering/go-no-go/;#;#;#;#
Sphero ;C, C++;2010;119,6;$119.6M;11-50;27;TechStars;C/ C++;https://www.linkedin.com/jobs/view/sr-android-software-engineer-app-team-at-sphero-1128908157;https://www.kidscodecs.com/coding-with-the-sphero-sprk-edition-robot/;#;#;#
Rigetti Computing;Python, Common Lisp, PHP;2013;119,5;$119.5M ;51-100;28;YCombinator;Python/ Common Lisp/ PHP;https://github.com/rigetti;https://en.wikipedia.org/wiki/Quantum_programming;#;#;#
Bench;Scala, Java, Node.js, Python;2012;49,1;$49.1M;101-250;28;TechStars;Scala, Java, Node, Python;https://news.ycombinator.com/item?id=15153497;#;#;#;#
Thalmic / currently North;Python;2012;159,6;$159.6M;251-500;29;YCombinator;Python;https://ca.linkedin.com/jobs/view/software-engineer-back-end-at-thalmic-labs-878727847;https://developerblog.myo.com/myo-unleashed-python/;#;#;#
Pilot ;PHP;2014;33,1;$33.1M;101-250;29;TechStars;PHP;https://www.garysguide.com/jobs/1qyinfo/Frontend-Engineer-at-Pilot-Fiber-New-York-NY;#;#;#;#
Podium;Ruby on Rails;2014;926;$92.6M ;251-500;30;YCombinator;Ruby on Rails, Elixir;https://www.glassdoor.com/Job/lehi-ut-senior-php-developer-jobs-SRCH_IL.0,7_IC1128238_KO8,28.htm?src=GD_JOB_AD&t=EMPLOYER_SEARCH_RESULTS&ao=517374&s=21&rdserp=true&srs=EI_JOBS&jl=3023777226;https://hire.withgoogle.com/public/jobs/podiumcom/view/P_AAAAAACAAEnEJjZEeSzrPd;#;#;#
Cargo;Ruby on Rails;2016;29,4;$29.4M;11-50;30;TechStars;Ruby on Rails;https://jobs.lever.co/cargo/6c10d7aa-e7f0-4448-a66d-24f78968e8cd;the growth of our Rails 5/React/Relay Modern driver, brand and rider focused application;#;#;#
Equipment Share;Python;2014;58,7;$58.7M;101-250;31;YCombinator;Python;https://www.equipmentshare.com/careers/openings?gh_jid=626992 (On the back end, almost all of our work is in Flask/Python/PostgreSQL.);#;#;#;#
Convey;Java;2013;25;$25.6M;11-50;31;TechStars;Java;Java is our language of choice;https://boards.greenhouse.io/convey/jobs/4214922002;https://boards.greenhouse.io/convey/jobs/4153846002;#;#
Soylent;Python;2013;72,4;$72.4M;11-50;32;YCombinator;Python;https://stackshare.io/soylent/how-soylent-ships-a-trillion-calories-per-month;#;#;#;#
Kalo;Python;2014;25,1;$25.1M;11-50;32;TechStars;Python;https://jobs.lever.co/kalo/a2df194e-779b-46a3-8a3b-1f8d489bb4f8;Currently, our application is built with Python 3 (Flask) and deployed to multiple Cloud Foundry based deployment environments.;#;#;#
PlanGrid;Python, Swift;2011;69,1;$69.1M ;251-500;33;YCombinator;Python;https://jobs.lever.co/plangrid/b348bcc9-2af5-480e-be02-582141cea430;https://jobs.lever.co/plangrid/847b7d9f-d3d4-4668-8659-bd2e270cde85;#;#;#
Everledger;C++, Go;2015;10,4;$10.4M;11-50;33;TechStars;C++/ Go;https://angel.co/everledger/jobs/332205-senior-software-engineer;#;#;#;#
Sift Science;Java;2011;106,6;$106.6M;101-250;34;YCombinator;Java/ Ruby/ Python;https://github.com/SiftScience?utf8=%E2%9C%93;https://engineering.sift.com/teams/applications-team/;#;#;#
Cloudability;Ruby on Rails;2011;39,8;$39.8M;101-250;34;TechStars;Ruby on Rails;https://github.com/cloudability?utf8=%E2%9C%93&q=&type=&language=;https://blog.cloudability.com/nasty-little-rails-bug/;#;#;#
Algolia;Java;2012;74,3;$74.3M;251-500;35;YCombinator;C/C++;https://blog.algolia.com/need-performance-on-mobile-use-c-cpp/;https://www.reddit.com/comments/136hny;#;#;#
Latch;Java;2014;96;$96M;101-250;35;TechStars;Java;https://angel.co/latch-2/jobs/146564-backend-engineer;Utilization of back-end programming languages, specifically Java;#;#;#
EasyPost;Python;2012;3,5; $3.5M;11-50;36;YCombinator;Python;https://angel.co/easypost/jobs/516287-senior-software-engineer;https://www.calhoun.io/about;https://github.com/EasyPost;#;#
SendBird;Python, C#;2013;70,7;$70.7M;11-50;36;TechStars;Python/ C#;https://angel.co/sendbird/jobs/440764-software-engineer-back-end-web-seoul;https://angel.co/sendbird/jobs/440762-software-engineer-net-unity-seoul;https://github.com/smilefam?language=python;#;#
Amplitude;Python , Node.js;2012;136;$136M;101-250;37;YCombinator;Python, Javascript;https://boards.greenhouse.io/amplitude/jobs/4208781002;#;#;#;#
Tenfold;Node.js, Java, Scala, Python;2015;27,2;$27.2M;101-250;37;TechStars;Node.js/ Java, Scala, and/or Python;https://www.tenfold.com/careers?gh_jid=1268865;https://www.tenfold.com/careers?gh_jid=1116977;#;#;#
Meta;C++;2012;73;$73M;51-100;38;YCombinator;C++;https://docs.metavision.com/external/doc/latest/openvr_sdk_landing_page;#;#;#;#
Zagster;Node.js;2007;31,1;$31.1M;51-100;38;TechStars;Node.js;Our tech stack includes mobile apps built in React Native, along with React web apps, supported by a backend implemented with NodeJS and MongoDB.;https://angel.co/zagster/jobs/437723-sr-software-engineer;#;#;#
WePay;PHP;2008;74,2;$74.2M;101-250;39;YCombinator;Java / Python;https://wecode.wepay.com/posts/wetools-an-elixir-cli;https://wecode.wepay.com/posts/how-wepay-mocks-sftp-payment-processor-backends;https://go.wepay.com/posting/835e8f70-da68-4370-97e7-e84d00fd0b39;https://techcrunch.com/2010/04/27/php-founder-rasmus-lerdorf-joins-group-payments-startup-wepay/;#
DataCamp;Ruby on Rails;2013;31,1;$31.1M;11-50;39;TechStars;Ruby on Rails;https://angel.co/datacamp/jobs/383437-full-stack-software-engineer-rails-vue-js;https://boards.greenhouse.io/datacamp/jobs/1479120;#;#;#
MemSQL;SQL, Scala;2011;108,1;$108.1M;101-250;40;YCombinator;SQL/ Scala/ Go;https://www.memsql.com/blog/creator-of-hhvm-joins-memsql/;https://angel.co/memsql/jobs/432964-software-engineer-backend;https://www.memsql.com/blog/big-data-scala/;#;#
INSPECTORIO;Python;2015;13,7;$13.7M;101-250;40;TechStars;Python;https://inspectorio.bamboohr.com/jobs/view.php?id=25;Technologies we use: Python, Angular 2+, DynamoDB, PostgreSQL, AWS, Flask, Django, Kubernetes, ElasticSearch;https://inspectorio.bamboohr.com/jobs/view.php?id=79;#;#
Weebly;PHP;2007;35,7;$35.7M ;251-500;41;YCombinator;PHP;https://www.quora.com/How-long-did-Weebly-take-to-build-and-what-languages-is-it-built-on;#;#;#;#
Chainalysis;Java;2014;47,6;$47.6M;51-100;41;TechStars;Java;https://angel.co/chainalysis/jobs/440650-sr-software-engineer-java;#;#;#;#
CoreOS;Go;2013;48,1;$48.1M;51-100;42;YCombinator;Go;https://blog.gopheracademy.com/birthday-bash-2014/go-at-coreos/;https://www.youtube.com/watch?v=UNulSprd2Ng;#;#;#
Bevi;Java;2013;60,1;$60.1M;51-100;42;TechStars;Java;Our stack includes React.js, Redux, Android, Java and Docker ;https://angel.co/bevi-1/jobs/278258-full-stack-software-developer;https://www.glassdoor.com/job-listing/senior-java-backend-engineer-bevi-JV_IC1154532_KO0,28_KE29,33.htm?jl=3144042224;https://angel.co/bevi-1/jobs/357939-senior-software-developer-android;#
Vidyard;Ruby on Rails;2011;60,7;$60.7M ;101-250;43;YCombinator;Ruby on Rails;https://stackshare.io/match/jobs/vidyard-software-developer;https://github.com/Vidyard;#;#;#
Ginger.io;Python;2011;28,2;$28.2M;11-50;43;TechStars;Python;https://boards.greenhouse.io/ginger/jobs/1590248;https://boards.greenhouse.io/ginger/jobs/1542986;#;#;#
Clever;Go;2012;43,3;$43.3M;101-250;44;YCombinator;Go;https://clever.com/about/jobs/software-engineer-1#gh_jid=1560413 (Currently we write frontend code in Node.js, TypeScript, and React with Redux and use Go for backend);#;#;#;#
New Knowledge;Python, Node.js;2015;13;$13M;11-50;44;TechStars;Python/ Node.js;"Our team uses a microservices architecture approach with a broad and evolving tech stack; including Python, Node.js, React, Docker, Kubernetes, Selenium etc.";https://boards.greenhouse.io/newknowledge/jobs/4218864002;#;#;#
MessageBird;PHP;2011;60,1;$60.1M;101-250;45;YCombinator;PHP;https://www.jobfluent.com/jobs/software-engineer-php-amsterdam-41ced5;https://relocate.me/the-netherlands/amsterdam/messagebird/senior-software-engineer-php-1510 (The application that is at the core of MessageBird is responsible for delivering SMS messages in an optimal way with the level of certainty that our customers expect is built in PHP and contains most of the knowledge of the business.);#;#;#
lovepop;Ruby on Rails, Python;2014;21,2;$21.2M;1-10;45;TechStars;Ruby on Rails/ Python;https://angel.co/lovepop/jobs/300773-principal-ui-engineer;This has allowed us to use a combination of Ruby on Rails for basic CRUD services/web application logic), Clojure for our customization, design, and render systems where concurrency and latency are the primary considerations and Python for our data/operational concerns. ;https://venturefizz.com/blog/lovepop-engineering-spotlight-boston-ma;#;#
Heroku;Ruby on Rails;2007;13;$13M;51-100;46;YCombinator;Ruby on Rails;https://github.com/heroku;https://www.quora.com/What-languages-and-frameworks-were-used-to-code-Heroku;https://techcrunch.com/2008/05/08/ruby-on-rails-startup-heroku-gets-3-million/;#;#
Timehop;Go;2010;14,1;$14.1M;11-50;46;TechStars;Go;https://jobs.lever.co/timehop/f9c1dcdd-a1a5-465f-9222-7312cf14f767;#;#;#;#
GOAT;Ruby on Rails;2015;197,6;$197.6M ;501-1000;47;YCombinator;Ruby on Rails;https://github.com/goatapp;https://jobs.lever.co/goat/ffe5b121-aa9a-447f-92e3-65b601e2419f;#;#;#
Kinvey (bought by Progress);Java, Swift, C#;2010;17,9;$17.9M;11-50;47;TechStars;Java/ Swift/ C#;https://github.com/Kinvey;#;#;#;#
Ridecell;Python with Django;2009;73,8;$73.8M;101-250;48;YCombinator;Python with Django;https://www.linkedin.com/jobs/view/senior-backend-engineer-core-platform-at-ridecell-339725956;https://github.com/Ridecell?utf8=%E2%9C%93&q=&type=&language=;#;#;#
Joany;Python, Ruby on Rails;2015;19,2;$19.2M;51-100;48;TechStars;Python/ Ruby on Rails;https://www.builtinla.com/2018/06/13/la-startups-hiring-developers-summer-2018;#;#;#;#
Matterport;Python, C++;2011;114;$114M;101-250;49;YCombinator;Python/ C++;https://jobs.lever.co/matterport/390e4501-052b-49f8-ab84-09b75b5f103f;https://github.com/matterport?utf8=%E2%9C%93&q=&type=&language=;#;#;#
Skilljar;Python, Ruby on Rails;2013;20,1;$20.1M;11-50;49;TechStars;Python/ Ruby on Rails;https://angel.co/skilljar/jobs/480498-senior-software-development-engineer;https://angel.co/skilljar/jobs/480497-software-development-engineer;https://angel.co/skilljar/jobs/480499-devops-engineer;#;#
Fivestars;Python;2011;92,7;$92.7M;251-500;50;YCombinator;Python;https://startup.jobs/247856-lead-hardware-systems-engineer-at-fivestars;#;#;#;#
HYP3R;Ruby on Rails;2015;23,8;$23.8M;51-100;50;TechStars;Ruby on Rails;https://stackoverflow.com/story/pgonzaga;https://hired.com/company/hyp3r;Tech stack: Postgresql, Ruby, Rails, AWS, Opsworks, EC2, S3, SQS, SNS, Redis, Ubuntu, Chef, HAProxy, Nginx, Unicorn, Linux, Ubuntu, Bootstrap, HTML5/CSS3, JS, JQuery, Less, Gulp, Bower, Objective-C , Cocoa Touch, Swift, Xcode, Restkit, CocoaPods, ReactiveCocoa ;#;#
Faire.com;Kotlin;2017;116;$116M;51-100;51;YCombinator;Kotlin;#;#;#;#;#
Atrium.co;Ruby on Rails;2017;75,5;$75.5M;110;52;YCombinator;Ruby on Rails;#;#;#;#;#
Rescale;Python;2011;52,4;$52.4M;11-50;53;YCombinator;Python;https://stackshare.io/rescale/rescale;https://angel.co/rescale/jobs/237404-software-engineer;#;#;#
Lever;Node.js;2012;72,8;$72.8M;101-250;54;YCombinator;Javascript;https://fulcrum.lever.co/the-lever-tech-stack-1b30e27d2bb0;#;#;#;#
Front;C++;2013;79,3;$79.3M;51-100;55;YCombinator;C++ (React for the new front end version);https://github.com/frontapp;https://frontapp.com/blog/2019/01/05/a-brand-new-app-thousands-of-new-customers/;#;#;#
ShipBob;C#;2014;62,5;$62.5M;51-100;56;YCombinator;C#;https://github.com/shipbobDev;https://goshippo.com/case-studies/shipbob/;#;#;#
Le Tote;Ruby on Rails;2012;62,5;$62.5M;11-50;57;YCombinator;Ruby on Rails, Elixir;https://github.com/LeToteTeam;https://stackshare.io/le-tote/le-tote;#;#;#
OMGPOP;Ruby, Erlang;2006;16,6;$16.6M;251-500;58;YCombinator;Ruby, Erlang;https://www.quora.com/What-programming-language-is-OMGPOP-coded-in;https://www.quora.com/What-are-the-programming-languages-and-frameworks-the-top-NYC-startups-are-using;#;#;#
Axoni;Scala, AxLang;2013;57;$57M;51-100;59;YCombinator;Scala - AxLang;https://www.finextra.com/pressarticle/72882/axoni-unveils-programming-language-for-smart-contracts;#;#;#;#
Scribd;Ruby on Rails;2005;47,8;$47.8M;101-250;60;YCombinator;Ruby on Rails, Scala, Go;https://angel.co/scribd/jobs/499812-senior-backend-engineer (we use a wide variety of technologies including Ruby on Rails, Scala, Go, ElasticSearch, Spark/Hadoop, MySQL, Cassandra and Redis);#;#;#;#
Lob;Node.js;2013;29,4;$29.4M;51-100;61;YCombinator;Javascript, Ruby on Rails, Python;https://lob.com/blog/tech-that-drive-lob;https://github.com/lob;#;#;#
Atomwise;Python;2012;51,3;$51.3M;11-50;62;YCombinator;Python;http://www.atomwise.com/jobs/senior-software-engineer/;http://www.atomwise.com/jobs/senior-machine-learning-research-scientist/;#;#;#
Heap;Node.js, Scala;2013;40,1;$40.1M;101-250;63;YCombinator;node.js, Scala;https://heapanalytics.com/careers/job?gh_jid=83721 (Our app-layer stack is TypeScript, React, Node.js, Redis, and PostgreSQL. Under the hood, Heap is powered by node.js, Scala, Spark, ZooKeeper, Kafka, and CitusDB.);#;#;#;#
Hush;Go;2016;0,12;$120K;1-10;64;YCombinator;Go;https://angel.co/hush-10/jobs/409613-senior-software-engineer-core-services;#;#;#;#
FutureAdvisor;Ruby on Rails;2010;21,5;$21.5M;11-50;65;YCombinator;Ruby on Rails;https://angel.co/futureadvisor/jobs/136433-fullstack-engineer;https://github.com/FutureAdvisor;#;#;#
SFOX;Go, C++;2014;23,1;$23.1M;11-50;66;YCombinator;Go, C++;https://www.sfox.com/jobs.html?gh_jid=4109665002;https://www.sfox.com/jobs.html?gh_jid=4109664002;#;#;#
BitMovin;Node.js;2013;40,5;$40.5M;51-100;68;YCombinator;JavaScript;#;#;#;#;#
Boom Supersonic;Python, Go;2014;141;$141M;51-100;69;YCombinator;Python/ Go;https://jobs.lever.co/boom/5946cbd5-becb-4de3-a8dd-51ab6b305a60;#;#;#;#
Zerocater;Python;2009;17,6;$17.6M;101-250;70;YCombinator;Python;https://stackshare.io/zerocater/zerocater;https://zerocater.com/about/careers/?gh_jid=1585908 ( production, we use Django, PostgresSQL, Redis, RabbitMQ on the back-end);#;#;#
RainForest;Ruby on Rails;2012;41,2;$41.2M;51-100;71;YCombinator;Ruby on Rails;https://jobs.lever.co/rainforest/16babe9d-d9b3-4ba2-8d76-6c85efe9211e;https://github.com/rainforestapp;#;#;#
SmartAsset;Python, C++, Java, PHP;2012;51,4;$51.4M;51-100;72;YCombinator;Python, C++, Java, PHP;https://angel.co/smartasset/jobs/361043-back-end-developer;https://www.glassdoor.com/Job/new-york-ny-back-end-engineer-jobs-SRCH_IL.0,11_IC1132348_KO12,29.htm?src=GD_JOB_AD&t=EMPLOYER_SEARCH_RESULTS&ao=160631&s=21&rdserp=true&srs=EI_JOBS&jl=2822580117;#;#;#
Embark;Python;2016;47,2;$47.2M;11-50;73;YCombinator;Python;https://jobs.lever.co/embark/f2a360b3-ada1-4c79-a220-0a8b267ed89d;https://hired.com/company/embark-trucks;https://angel.co/embarktrucks/jobs/224921-software-engineer;#;#
Razorpay;PHP, Python;2013;31,6;$31.6M;51-100;74;YCombinator;PHP/ Python;https://angel.co/razorpay/jobs/80187-senior-backend-developer;https://angel.co/razorpay/jobs/114438-backend-developer;https://stackshare.io/razorpay/razorpay;#;#
Qventus;Python;2012;45;$45M;11-50;75;YCombinator;Python;https://angel.co/qventus/jobs/134829-seniorfull-stack-developer;https://belitsoft.com/python-development-services/python-healthcare;#;#;#
Cloudant;Erlang;2008;16,3;$16.3M;51-100;76;YCombinator;Erlang;https://db-engines.com/en/system/Cloudant%3BCouchDB%3BCouchbase;#;#;#;#
GrubMarket;Node.js;2014;64,1;$64.1M;51-100;77;YCombinator;Javascript, Java;https://www.grubmarket.com/jobs/eng-1;#;#;#;#
Codecademy;Ruby on Rails;2011;47,5;$47.5M;51-100;78;YCombinator;Ruby on Rails;https://www.quora.com/What-is-the-technology-stack-behind-Codecademy-How-does-it-process-JavaScript-code-thats-written-by-students;#;#;#;#
Automatic;Python;2011;24;$24M;11-50;79;YCombinator;Python;https://recruiting.adp.com/srccar/public/RTI.home?c=1147611&d=ExternalCareerSite&r=5000424837706#/;#;#;#;#
Ironclad;Node.js, Java;2014;34;$34M;51-100;80;YCombinator;Javascript, Java;https://jobs.lever.co/ironcladapp/b5bc7044-b22e-48ff-ba8f-53d1d7d09ba4;#;#;#;#
FarmLogs;Python;2012;37;$37M;51-100;81;YCombinator;Python;https://twitter.com/farmlogs/status/425655054591213568;https://stackshare.io/farmlogs/backend-and-infrastructure;https://github.com/FarmLogs;#;#
Caviar;Ruby on Rails;2012;15;15M;101-250;83;YCombinator;Ruby on Rails;https://stackshare.io/caviar/caviar;https://www.jobilize.com/job/senior-software-engineer-ruby-on-rails-caviar-san-francisco-square;#;#;#
HackerRank;Ruby on Rails;2012;58,2;$58.2M;101-250;83;YCombinator;Ruby on Rails;https://www.quora.com/What-languages-and-frameworks-were-used-to-code-HackerRank;#;#;#;#
Nurx;Node.js;2014;41,4;$41.4M;101-250;84;YCombinator;Node.js;https://angel.co/nurx/jobs/457261-senior-back-end-engineer;https://stackshare.io/nurx/nurx;#;#;#
Functionofbeauty.com;PHP;2015;12,2;$12.2M;51-100;85;YCombinator;C, C++, Java, Python, PHP;https://www.functionofbeauty.com/jobs/;https://angel.co/function-of-beauty-4/jobs/423071-backend-developer;#;#;#
Gigster;Node.js;2013;32,6;$32.6M;501-1000;86;YCombinator;Node.js;https://stackshare.io/gigster/gigster;https://angel.co/gigster/jobs/509651-technical-architect-network;#;#;#
Goldbelly;Ruby on Rails;2012;33,1;$33.1M;11-50;87;YCombinator;Ruby on Rails;https://angel.co/goldbelly/jobs/169836-software-engineer;https://angel.co/goldbelly/jobs/176661-senior-software-engineer;#;#;#
Buildzoom;Python, Ruby on Rails;2013;23,7;$23.7M;51-100;88;YCombinator;Python/ Ruby on Rails;https://angel.co/buildzoom/jobs/381056-senior-software-engineer-back-end;https://stackshare.io/buildzoom/buildzoom;#;#;#
People.ai;Python;2016;37;$37M;101-250;89;YCombinator;Python;https://angel.co/people-ai/jobs/310858-senior-backend-engineer-ai-ml-enterprise-saas;#;#;#;#
inDinero;Ruby on Rails;2009;9,9;$9.9M;51-100;90;YCombinator;Ruby on Rails;https://stackshare.io/indinero/indinero;https://www.indinero.com/careers-at-indinero?gh_jid=201570;#;#;#
Firebase;Scala, Node.js;2011;7;$7M;251-500;91;YCombinator;Scala, Javascript;https://www.quora.com/In-what-language-was-Firebase-written;#;#;#;#
Genius;Ruby on Rails;2011;72,5;$72.5M;51-100;93;YCombinator;Ruby on Rails;https://angel.co/genius;#;#;#;#
ScienceExchange;Ruby on Rails;2011;72,5;$72.5M;51-100;93;YCombinator;Ruby on Rails;https://angel.co/science-exchange/jobs/447154-senior-full-stack-software-engineer (Our primary application is a classic Ruby on Rails codebase, with a little bit of React.js mixed in. );#;#;#;#
Thread;Python;2012;40,9;$40.9M;1-10;94;YCombinator;Python;https://angel.co/thread/jobs/24661-software-engineer (You’ll work everyday with an awesome technology stack consisting of Python, Django, Git, Debian, Redis, jQuery, Jenkins, PostgreSQL, Gunicorn);https://www.thread.com/jobs/software-engineer (Enjoy learning technologies that are new to you. We use Python and Django but you don’t need experience in them.);#;#;#
The Muse;Python;2011;28,7;$28.7M;101-250;95;YCombinator;Python;https://stackshare.io/the-muse/the-muse;#;#;#;#
Second Measure;Python, Scala;2015;25,5;$25.5M;51-100;96;YCombinator;Python/ Scala;https://angel.co/second-measure/jobs/252370-software-engineer-data;#;#;#;#
Scale Labs;Python;2016;1;$1M;11-50;97;YCombinator;Python;https://angel.co/thescalelabs/jobs/245236-back-end-developer;https://angel.co/thescalelabs/jobs/467556-back-end-development-intern;#;#;#
Strikingly;Ruby;2012;17,5;$17.5M;251-500;98;YCombinator;Ruby;https://www.strikingly.com/s/careers#backend;#;#;#;#
The Athletic;PHP, Ruby, Node.js, Elixir;2015;67,7;$67.7M;101-250;99;YCombinator;PHP, Ruby, Node, Elixir;https://angel.co/the-athletic/jobs/456441-software-engineer-full-stack;#;#;#;#
HelloSign;PHP, Elixir;2011;16;$16M;51-100;100;YCombinator;PHP/ Elixir;https://angel.co/hellosign/jobs/366385-software-engineer-elixir;https://jobs.lever.co/hellosign/db263c64-7623-4d4a-8fe7-1729bd08675a (Technologies we use most include PHP, Elixir, React JS and MySQL.);#;#;#
GoCardless;Ruby on Rails;2011;122,3;$122.3M;101-250;101;YCombinator;Ruby on Rails;https://github.com/gocardless;https://www.startus.cc/job/senior-backend-software-engineer-london-uk (We're primarily built in Ruby and JavaScript using Rails);#;#;#