US$35 / 15 mins5.0 (2520 reviews)

★Top Ruby on Rails Mentor since January 2016 (100 months in a row!)★

Experienced (15+ years) developer and friendly Ruby on Rails and React/Next.js/Redux Developer/Mentor (with passion for helping others learn) | ★ 3,590+ 5 ★ sessions/jobs. 8+ year...

GitGit pullrequestsRuby on Rails Ruby API React JavaScript Heroku GraphQL RSpec PostgreSQL AWS (Amazon Web Services)MySQL Elasticsearch Stripe OmniAuth Redux Reverse Engineering Webpack React Native Sinatra React with redux npm React ApolloObjection fridaCharles proxy OAuth Selenium Cloud Hosting Redis React Router BDD Test driven development Bash Devise Shopify RubyGems Elastic Load BalancerReact on railsReact rails Omniauth linkedin Omniauth githubOmniauth twitterOmniauth google oauth2Omniauth facebook Webhook Stripe api Stripe ruby Stripe Payments MySQL Optimization jQuery AJAX SNS Amazon SNS Amazon S3 Amazon EC2 Heroku addons Git webhooks Git rebase GitHub Flow Git branch Git flow GitHub Actovemodel serializer Jbuilder Grape api Grape Serialization Rspec2 Rspec3 RSpec for Rails Factory girl Minitest NokogiriDropzone RailsDropzone.jsAdministrate Rails admin Rails migrations Rails 5 Youtube data api YouTube API Capistrano CapybaraHighchartHighchartsGmap4railsGmaps4railsActive shippingBugsnagClient side validationsAws sdk Cancancan Kaminari Factorygirl Active record BraintreeMysql2Jwt Active admin Rubocop Rails API Rails Console Railsadmin Sidekiq Papertrail CanCan Delayed job Pundit Rails Asset Pipeline Bootstrap Instagram Simple form Actionmailer Carrierwave Bundle Paperclip Authorization Client server Rails ActiveRecord OOP (Object-Oriented Programming)Cache Es6 Auth Rails 4 OAuth 2.0 New Relic Aws elastic beanstalk Security software Web Application Database

Johnny B. (Ionică Bizău)

US$20 / 15 mins5.0 (1720 reviews)

Full Stack Developer, *nix user, Pianist & Organist, Vegetarian, Jesus follower

Hey! I am Johnny B. 🙏 (Actually, my Romanian friends call me Ionică, which in English is basically: Johnny). ...and I 💖 emojis! I started coding around 2010, starting with simp...

Abhishek Gupta

US$19 / 15 mins5.0 (252 reviews)

I believe in Quality, User experience & performance!

I've been working for prestigious companies as a developer for 8+ years. Worked in domain of cloud, database, algorithms & data structure. If your issue isn't resolved, I'll refu...

GitGit pullrequestsRuby on Rails SQL Java Ruby Data structure Algorithm AWS (Amazon Web Services)Azure Packer WordPress SEO HTML/CSS Linux Windows Application Application Insights Excel Perl Android Regex WordPress Theme Customization Rails 4 Microsoft SQL Server Java 8 Back-End Android SDK Android Layout Android Studio GitLab Ruby on rails3 WinForms Reverse Engineering API MySQL Optimization MySQL PostgreSQL Merging JavaScript Setup HTML5 Apache Hadoop Selectors CSS Microsoft Excel 2013Excel 2016Excel 2010 Design JSON Gson HamlAzure application insightsGemfile jQuery UI jQuery Mobile jQuery SQLite SQLite 3 Windows Phone Windows Server Windows 10 Pagespeed Pagerank HTML AJAX Aws sdk ruby Aws sdk Amazon EC2 Aws ami AWS VPCVhdPacker TemplatePacker AwsPacker AzureAmiGemsetBundler Rvm RubyGems Design ArchitectureCloud OsCentOS Ubuntu Git merge Git branch Version control GitHub Java7 Database Schema Database Rails 5 Rails ActiveRecord Rails API

Jason (iDoAWS)

US$30 / 15 mins5.0 (163 reviews)

Cloud Solutions Architect specializing in AWS emergency support, scaling, automa...

I put out production cyber fires over donuts and camp fires. Polyphasic sleeper serving all timezones. Provider of live-help in real-time via video conference for technologies I ...

GitGit pullrequestsDevOps AWS (Amazon Web Services)Server Linux Meteor JavaScript MongoDB Security software Firewalls Vim PHP Aws iam Apache HTTP Server TLS Gh pages CSS Aws CodebuildAws CodedeployAws CodepipelineAws CodestarInfrastructure as Code AWS Policies AWS OpsWorksAws herokuAWS VPC AWS DynamoDB AWS Data Pipelines AWS CloudFront Aws swf Amazon ami Aws amiAws machine imageAmazon machine imageMachine imageAmi Docker AWS IoT Aws sns Aws ses Amazon linux AWS Lambda Amazon SES Amazon elastic beanstalk Amazon Redshift Amazon EMR Amazon elb Amazon vpc Amazon SNS Amazon EBS Amazon Amazon SQS Amazon RDS Amazon S3 Amazon EC2 Aws sdkNewrelic rpmHAProxyLog file analysisLogging Deployment automation Resource optimization Load Balancing Reverse proxy Proxyserver ProxyCloudlinuxCentOS RHEL BSD Google Cloud PlatformModulusDigitalOcean Heroku Scalability Node.js React Bootstrap 3 HTML/CSS Underscore Underscore.js Lodash GSAP Express angular MEAN.io MEAN.js MEAN Stack Cors ECMAScript Bootstrap npm Reactive Minimongo Blaze SpacebarsMeteor autoformMeteor sessionMeteor accounts Meteor pubsub Flow router Iron Router Atmosphere Packages Real-Time Meteor blaze Meteor up Meteorite Red Hat Fedora Mint Mandriva Ubuntu Vi Shell Ash BashDirectadminCache Server PagesHttp caching HTTP Phusion Passenger SpdyHttpd.confHttp2Nginx modulesNginx 1.6 WHM cPanel Apache Web Server Apache HTTP Server 2 Apache Configuration Nginx Unicorn PumaSslerrorSSL Security SSH SSL CertificateMod proxyVirtualminWebminUserminMemcached configMemcached php Varnish API BackendlessVarnish VCLLfsNetbsdOpenBSD DebianCloud linuxphpMyAdmin Hhvm SmartyMicrosFreeposOposPOS Vim plugin Vim macros Vim scripts Vim Configuration Git webhooks Git rebase Git push Git pull Git flow Git commit GitHub Flow GitLab Git branch GitHub Git hooksBelkinLinksysKnockKnockdNetfilter iptables WordPress pfSense Penetration toolsDistaster recoveryPort scanningPort forwardingMetasploit Wireshark Nmap Disaster Recovery Planning Network SecurityMini mongoMongo adminMongodb cursorMongolab Mongojs Mongoid Mongoose MongoadminMongoclientPhp fpmOpcacheFirewall RESTful API Deploy Azure Auth Es6 Cache Memcache New Relic Express.js Digital Forensics Data parsing Bootstrap 4

Manoj Pandey

US$30 / 15 mins5.0 (126 reviews)

Expert Senior Python Developer, 6 years of development experience.

**Senior backend/full-stack developer with 6+ years of professional experience** - Currently working as a Senior Data Engineer at a Climate Tech startup in Berlin - Previously wor...

GitGit pullrequestsPython Linux JavaScript Docker DevOps HTML/CSS C++C jQuery Ruby macOS R Java Regex Web Crawling Ubuntu 14 Server-Side Development Regression testing Python 3 Python 2 Object-Oriented Programming Java 8 Git flow Express.js DigitalOcean Bootstrap 3 AWS (Amazon Web Services)Terraform Ansible Kubernetes Nltk Scipy Scrapy IPython Django Flask Neural Networks Text Classification Text Processing Classification NLP (Natural Language Processing)Machine Learning OCR PDF Text Extraction Automation Scraper XML Lxml HTTP Requests NumPy Matplotlib Pandas Visualisation Merging iOS Gh pages ggplot Form Data structure Selectors CSS Branching Animation Amazon CloudFront OS X Server Project setup SetupAutomatorXcode 7 Xcode OS X Mountain Lion Ubuntu Server Fedora Ubuntu Oh my zsh Zshrc Zsh ShellBashrc virtualenvBash Logistic regression Rstudio server RStudioJavaccJava7 OOP (Object-Oriented Programming)RubyGems Gemfile Bundler Rvm Ruby on Rails Microservices Server Configuration Server management SSH Heroku Linode Server Jquery custom plugins Jquery events jQuery Plugins AJAX Static functions Queues Stack Pointers Programming Algorithm Git merge Rebase Git branch GitHub Build Clang gcc linux GCC C/C++Makefile C++14 C++11 Margin Design CSS3 Animations Css designing Html structure Bootstrap modal Html form Web Development Responsive Design Css position CSS Float CSS Animation CSS3 HTML5 HTML Bootstrap npm Nvm D3.js API React Node.js JSON Angular

Saurabh a.k.a Codedoctor

US$15 / 15 mins5.0 (83 reviews)

I’m Saurabh, a Hustler, Thinker and most important I live, eat and drink Web, in...

Senior Software Developer at Booking.com and a tech advisor for a bunch of startups.I am a hard core techie and has worked on almost every tech stack out there.I also ranked among ...

Jad Salhani

US$50 / 15 mins5.0 (70 reviews)

Enterprise Architect - Full Stack Software Engineer

Software Engineer and Technical Architect **12 years in**. During my career I worked on more than 15 large scale projects, spread out between Web, Mobile and Digital Transformation...

Anatoliy (Toli) Zaslavskiy

US$50 / 15 mins4.9 (80 reviews)

Web3, Node, CI/Testing, and Data Viz Expert

Hello. My name is Toli. I'm lover of experimentation, dogs, yoga, and travel. And I am a full stack Javascript Developer. My passions are creating simple, intuitive interfaces, pr...

Innocent Amadi

US$15 / 15 mins5.0 (32 reviews)

Javascript, React (Flux, Redux, GraphQL, Apollo) and CSS expert

I've been programming for over 7 years. I've built quite a number of web applications and owe most of my expertise to mistakes. I still learn everyday and would definitely love to ...

Michael G Schwern

US$30 / 15 mins5.0 (23 reviews)

Installed a Perl module? You're using my code.

If you're having Perl, Git, SQL, C or testing problems, I can help. If you have a Perl problem, maybe a bug in a module, or a regex isn't working, or it's slow, maybe CPAN troub...