Technologies

NameCompetenceExperienceSinceUsed in production
Operating systems
MacOS90%over 13 years (since 2008) Used in production
Windows80%almost 11 years (January 2001 to January 2012) Used in production
Ubuntu50%over 5 years (since 2016) Used in production
Collaboration services
Invision70%over 4 years (since 2017) Used in production
Zeplin80%over 4 years (since 2017) Used in production
SaaS providers
MailGun80%over 4 years (since 2017) Used in production
SendGrid60%over 1 year (since 2019) Used in production
Mandrill50%over 2 years (since 2018) Used in production
AWS Simple Email Service30%over 1 year (since 2019) Used in production
AirBrake80%8 months (since 2020) Used in production
Rollbar80%over 2 years (since 2018) Used in production
Utility packages
Devise80%over 4 years (since 2017) Used in production
ActiveAdmin80%over 3 years (since 2018) Used in production
ElasticSearch10%over 2 years (since 2018) Not used in production
Redis80%over 2 years (since 2018) Used in production
Sidekiq50%over 4 years (since 2017) Used in production
Webpacker40%about 2 years (since 2019) Used in production
dry-types / dry-validation30%over 1 year (since 2019) Used in production
Graphics editors
Affinity Designer70%over 3 years (since 2018) Used in production
Blender40%7 months (January 2013 to August 2013) Not used in production
Fireworks30%5 months (March 2007 to August 2007) Not used in production
Flash50%about 2 years (January 2006 to January 2008) Used in production
Illustrator60%almost 15 years (April 2002 to January 2017) Used in production
InDesign80%almost 9 years (January 2005 to January 2014) Used in production
Photoshop70%about 13 years (January 2002 to January 2015) Used in production
Premiere40%almost 2 years (since 2019) Used in production
Sketch70%over 1 year (January 2017 to October 2018) Used in production
Affinity Publisher70%4 months (January 2018 to May 2018) Used in production
CVs
BitBucket70%over 3 years (since 2018) Used in production
Git80%about 5 years (since 2016) Used in production
GitHub80%over 5 years (since 2016) Used in production
GitLab60%over 4 years (since 2017) Used in production
Domain name registrars
AWS Route5330%over 2 years (since 2019) Used in production
Nic.ru50%over 7 years (since 2013) Used in production
Name.com40%over 5 years (since 2015) Used in production
DigitalOcean NS80%over 2 years (since 2018) Used in production
GoDaddy10%2 months (May 2015 to July 2015) Not used in production
Target platforms
Chrome extension60%over 2 years (since 2019) Used in production
Hostings
DigitalOcean Spaces80%over 2 years (since 2018) Used in production
MasterHost20%about 2 years (October 2010 to October 2012) Used in production
AWS S380%over 4 years (since 2017) Used in production
DigitalOcean droplets80%over 5 years (since 2016) Used in production
Heroku dynos80%over 5 years (since 2016) Used in production
Heroku plugins50%over 5 years (since 2016) Used in production
Task managers
Asana90%over 4 years (since 2016) Used in production
Basecamp90%over 8 years (since 2012) Used in production
Trello90%over 3 years (since 2017) Used in production
Slack90%over 2 years (since 2018) Used in production
Front-end utilities
Google Maps70%over 2 years (since 2018) Used in production
Yandex.Maps70%over 2 years (since 2018) Used in production
Fotorama.js80%over 3 years (since 2017) Used in production
jQuery60%over 8 years (since 2013) Used in production
Programming languages
ActionScript20%about 1 year (January 2006 to January 2007) Used in production
Swift10%over 4 years (since 2016) Not used in production
TypeScript30%over 2 years (since 2019) Used in production
Rust10%over 2 years (since 2019) Not used in production
BASH40%over 4 years (since 2017) Used in production
CSS80%over 6 years (since 2015) Used in production
JavaScript60%almost 6 years (since 2015) Used in production
Ruby80%about 5 years (since 2016) Used in production
Sass80%over 5 years (since 2016) Used in production
CSS frameworks
Materialize30%about 1 year (October 2017 to October 2018) Used in production
Bulma20%8 months (since 2020) Not used in production
Bootstrap90%over 7 years (since 2014) Used in production
Test utilities
Travic CI50%about 1 year (January 2017 to January 2018) Not used in production
Circle CI50%over 3 years (since 2018) Used in production
Capybara70%over 4 years (since 2017) Used in production
RSpec90%over 5 years (since 2016) Used in production
Selenium web driver70%over 4 years (since 2017) Used in production
Front-end builders
Parcel60%over 3 years (since 2018) Used in production
WebPack60%over 3 years (since 2018) Used in production
CodeKit80%about 1 year (January 2015 to January 2016) Used in production
Markup languages
Haml50%about 1 year (January 2018 to January 2019) Used in production
HTML80%over 8 years (since 2013) Used in production
Slim90%over 4 years (since 2017) Used in production
ERB90%about 6 years (since 2015) Used in production
JS front-end frameworks
React30%3 months (January 2017 to April 2017) Not used in production
Stimulus50%2 months (October 2019 to December 2019) Not used in production
Svelte20%over 1 year (since 2019) Not used in production
Vue70%over 3 years (since 2018) Used in production
Code linters
RuboCop70%4 months (January 2017 to May 2017) Used in production
ESlint10%about 1 month (November 2019 to December 2019) Not used in production
Server automation tool (DevOps)s
Braintree Runbook10%about 1 month (March 2020 to April 2020) Not used in production
Capistrano70%over 3 years (since 2018) Used in production
Chef50%about 1 year (January 2017 to January 2018) Used in production
Docker10%6 months (since 2020) Not used in production
Kubernetes10%5 months (since 2020) Not used in production
Performance optimizations
LightHouse80%over 2 years (since 2018) Used in production
Webhint.io100%over 1 year (since 2019) Used in production
SEO tools
Google Webmasters50%over 5 years (since 2015) Used in production
Yandex.Webmaster50%over 5 years (since 2015) Used in production
Yandex.Metrika30%over 2 years (since 2018) Used in production
Google Analytics30%over 3 years (since 2017) Used in production
Abstract skills
Direct sales30%over 1 year (May 2000 to January 2002) Used in production
Working remotely from another TZ90%about 8 years (since 2013) Used in production
Graphic design70%about 16 years (since 2005) Used in production
Full-stack frameworks
Ruby on Rails80%about 6 years (since 2015) Used in production
Sinatra40%about 2 months (January 2018 to March 2018) Used in production
Software architectures
Refactoring (in Fowler’s definition)50%over 1 year (since 2019) Used in production
S.O.L.I.D. principles70%over 2 years (since 2018) Used in production
Domain-driven design20%4 months (November 2018 to March 2019) Not used in production
Hexagonal architecture70%over 3 years (since 2017) Used in production
MVC100%over 5 years (since 2016) Used in production
Test-driven design90%over 4 years (since 2016) Used in production
Microservice architecture0%5 months (since 2020) Not used in production
Enterprise Integration Patterns10%over 2 years (since 2018) Used in production
“Gang of four” design patterns30%over 3 years (since 2017) Used in production
Code Smells50%over 1 year (since 2019) Used in production
Distributed Systems20%almost 2 years (since 2019) Not used in production

I might have forgotten something