Ruby Ukraine Freelancers

Showing 751 freelancers

Ruby Ukraine Freelancers

Showing 751 freelancers

  • Team Lead, Senior Ruby on Rails, co-founder at RM

    I'm a Tech Lead with about 8 years experience in web-development and about 4 years in Ruby on Rails. I have in portfolio more than 40+ finished rails projects from social platforms and e-commerce to SaaS. I'm self … more

    I'm a Tech Lead with about 8 years experience in web-development and about 4 years in Ruby on Rails. I have in portfolio more than 40+ finished rails projects from social platforms and e-commerce to SaaS. I'm self motivated, can solve complex tasks in a short time. In the past two years my main roles were architecture planning, choosing the right technology stack using the client's requirements, development management, team management I like Agile and use it every day - iterations, scrum daily meetings, retrospectives. I like confident code and TDD/BDD. I'm experienced in RSpec, Capybara and Cucumber. Often I help clients to understand what will be the best development approach for them. Do they need only MVP or there is a sense in building full version. What technologies are best for their project. Plan deadlines and budget. I'm very familiar with AWS technologies stack - setup EC2 instance from scratch, configure balance loader(EBL), setup push notifications service(SNS), emails(SES), database instances(RDS), and other services I have an experience in buiding a high-load applications, huge processing centers with 1,000,000 processed jobs daily(in Sidekiq), PostgreSQL database size more than 500GB and everything places on EC2 instance with 32 Cores and 68GB RAM. That was very excited. I'm a fun of continues integration and continues deploy practices. I also have experience in front-end development: JavaScript on advanced level, canvas, CoffeeScript, web-sockets(socket.io) with node.js back-end, backbone.js, Ember.js In the past years there is a trend to have an application with RESTful JSON API built in Ruby on Rails. I have experience in building more than 5 different APIs for different projects. Some of them were versioning and have up to v4. There is always a challange to support old versions, but we successfully doing it. Some have HIPAA protection, one application had a really complex structure of API URLs but it was very easy to work with it in the end since we built it human readable. Thanks for you time!  less

    ruby ruby-on-rails php mysql postgresql javascript coffeescript jquery backbone-js ajax css css3 bdd rspec yii-framework haml twitter-bootstrap sass sinatra-framwork appcelerator-titanium 00 more less
    • $40.00 HOURLY RATE
    • 4.9
    • 3106 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 1 TEST
  • Senior Rails / Ruby developer

    4+ years experience using TDD with Ruby (Rails & Sinatra) My career in IT sector started from an Internet start-up (a new technology in Internet advertising). Having started as a Junior programmer I've quickly grown to highly qualified Senior developer … more

    4+ years experience using TDD with Ruby (Rails & Sinatra) My career in IT sector started from an Internet start-up (a new technology in Internet advertising). Having started as a Junior programmer I've quickly grown to highly qualified Senior developer. I also developed myself as a Team Leader and later as a Project Manager. I have widely distributed with highly rated professional skills in variety of informational technologies and other areas. - Experienced at developing and managing a highly loaded systems; - Gained few years experience in developing mobile WAP and HTML5 games; - Experienced at developing a booking ticket system (airplane/boat/bus/train). - Developed a wide range of websites using HMTL5, CSS3, Ruby, Ruby on Rails, Sinatra, AngularJS, MySQL, SQLite, PostgreSQL, MongoDB, Sphinx, Redis, nginx, phonegap, php, etc. I have the great interest of creating architecture and bussiness solutions for big projects. My colleagues see me as highly motivated and oriented on a the best result. I'm looking for some interesting projects for long term cooperation.  less

    ruby-on-rails ruby javascript mysql html css jquery seo angularjs linux-system-administration 00 more less
    • $49.99 HOURLY RATE
    • 5.0
    • 690 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 6 TESTS
    GROUPS:
    ASSOCIATED WITH:
  • Linux system administrator, DevOps consultant, Nagios Icinga expert

    High-skilled self-motivated professional with over 7 years of experience in Linux/Unix administration. Strong skills in hosting services including design of networks, servers and services. I have done several projects for designing of infrastructure from ground zero to ready systems … more

    High-skilled self-motivated professional with over 7 years of experience in Linux/Unix administration. Strong skills in hosting services including design of networks, servers and services. I have done several projects for designing of infrastructure from ground zero to ready systems including development area for Web Development companies with staging/pre-production environments. Positive experience in design and implementation solutions for High-Load web projects. - Linux system administration (Debian/Ubuntu and CentOS/RHEL) - PHP and Ruby/Rails software development background, - involved into JAVA projects as build and configuration manager - deployment with Ant, Hudson/Jenkins, Rake/Capistrano - pro-active monitoring with Icinga 2 and Nagios 4 - scheduled backups and disaster recovery verifications - apply DevOps methodology for better cooperation with developers.  less

    amazon-web-services linux-system-administration bash-shell-scripting centos ubuntu unix-shell tcp-ip apache-administration nginx nagios 00 more less
    • $28.00 HOURLY RATE
    • 5.0
    • 15 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 8 TESTS
  • Mobile Developer

    I started learning development when I was 15. At first it was simple HTML pages, then I played with different CMS web platforms such as WordPress or Joomla. When I got my first Android device I decided to learn more … more

    I started learning development when I was 15. At first it was simple HTML pages, then I played with different CMS web platforms such as WordPress or Joomla. When I got my first Android device I decided to learn more about mobile development. Over the last 5 years, I developed a wide range of mobile apps. From simple torch or web view apps to GPS loggers, geolocation apps, social network apps, etc. My core competency lies in complete end-end management of a new mobile application development project, and I am seeking opportunities to build apps from the ground up for you or your business.  less

    java git html css sql sqlite gps-development android-app-development 00 more less
    • $33.33 HOURLY RATE
    • 4.9
    • 1075 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 7 PORTFOLIO ITEMS
    • 1 TEST
    GROUPS:
  • Project manager

    We want to be more than expendable, one-off hired hand - our goal is to help you not only by implementing what you require of us, but also by providing advice, guidance, and best practices based on our wide experience. We … more

    We want to be more than expendable, one-off hired hand - our goal is to help you not only by implementing what you require of us, but also by providing advice, guidance, and best practices based on our wide experience. We'll understand your business needs and will always help to fulfill them - even if it requires more effort from us. We'd be happy to build a long-time relationship and became a valuable resource for all your development and software architecture needs. If you need a hands-off solution, on time, on point and on budget, we are your team! Unter viele europäische und amerikanische Kunden arbeiten wir auch gern im deutschsprachigen Raum. Wir verfügen über mehrjahrige Erfahrungen in IT-Technoligien und unseres Ziel ist durch das Verstehen von Kundenbedürfnisse ein Qualitätsprodukt zu einem konkurrenzfähigen Preis zu liefern.  less

    asp.net .net-framework ado.net wcf wpf microsoft-silverlight c# c++ javascript sql mysql ajax asp.net-mvc css linq linq-to-sql xml extjs php cakephp yii-framework sap-sybase-adaptive-server-enterprise oop web-design apache-administration jquery ruby ruby-on-rails c microsoft-visual-basic postgresql mongodb cucumber selenium redis unity-3d memcached sphinx git svn linux-system-administration ubuntu project-management windows-forms-development microsoft-visual-studio tfs agile-software-development scrum telerik microsoft-excel wordpress symfony smarty twig-template-engine vim netbeans 00 more less
    • $22.22 HOURLY RATE
    • 5.0
    • 2750 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 11 PORTFOLIO ITEMS
    • 8 TESTS
    GROUPS:
  • Senior Automation QA / Selenium / ISTQB / Load / Performance

    I have about 7 years of QA experience. I started as a tester and now I am Senior QA. I have a big experience in automation testing using different solutions and practises(Selenium Webdriver, MS CodedUI, Telerik WebAii, CI, BDD … more

    I have about 7 years of QA experience. I started as a tester and now I am Senior QA. I have a big experience in automation testing using different solutions and practises(Selenium Webdriver, MS CodedUI, Telerik WebAii, CI, BDD etc). Also I've performed the development process streamlining, requirements creation, managing of human resource, test documentation development, etc. I passed successfully ISTQB Foundation level exams and received ISTQB certificate.  less

    selenium-webdriver java software-testing continuous-integration ruby automated-testing test-automation jenkins performance-testing load-testing cucumber jmeter manual-testing testng-framework software-qa-testing test-case-design c# telerik bdd scrum linux-system-administration atlassian-jira test-driven-development penetration-testing agile-software-development regression-testing redmine usability-testing black-box-testing web-testing functional-testing testcomplete user-acceptance-testing sqa 00 more less
    • $22.21 HOURLY RATE
    • 5.0
    • 10187 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 9 PORTFOLIO ITEMS
    • 2 TESTS
  • Scientific and custom programming

    Over the last 12 years I have developed a range of scientific and custom applications, among which are weather-predicting and water modeling systems, visualization with Qt4 and OpenGL, parallel programming with MPI. I am proficient in Linux, Fortran, shell programming … more

    Over the last 12 years I have developed a range of scientific and custom applications, among which are weather-predicting and water modeling systems, visualization with Qt4 and OpenGL, parallel programming with MPI. I am proficient in Linux, Fortran, shell programming, AWK, C, and C++. I have a hands-on experience with MySQL, Apache, Python and Java. My current interests include Nvidia CUDA, Common Lisp, Clojure Lisp, and signal processing. Hmmm... No market for MPI and Fortran, you say? All right, here is my shiny recent skill: Objective-C, Mac OS X, iPhone OS.  less

    linux-system-administration fortran bash awk c++ lisp opengl 00 more less
    • $30.00 HOURLY RATE
    • 5.0
    • 2109 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 16 TESTS
  • System Administrator

    Last 6 years I have engaged in system administration using Apache2, Nginx, PHP, Perl, Python and MySQL including sites for startup companies and small businesses. extensive experience in the deployment of sites and projects of varying complexity, and I am … more

    Last 6 years I have engaged in system administration using Apache2, Nginx, PHP, Perl, Python and MySQL including sites for startup companies and small businesses. extensive experience in the deployment of sites and projects of varying complexity, and I am seeking opportunities help you to build your business. I have great experience in: - Linux maintaince/troubleshooting: Debian, CentOS, Gentoo, Ubuntu, RHEL etc - Apache2 + Nginx, Nginx + PHP-fpm, Nginx + PHP-fastcgi, MySQL, Varnish, Memcached. - Linux serverside: iptables, rsync, Bind, OpenVPN, - Mail: Exim, Dovecot, Postfix. - Cloud Hosting: Digitalocean, RackSpace, Amazon (EC2, AWS, S3), Linode, GoDaddy - Hosting providers : Softlayer, Hetzner. - Backup/Migration - Hosting panels : Plesk, whm\cPanel, ISP , DirectAdmin, Virtualmin - Virtualization: Xen, KVM, OpenVZ, Proxmox - Monitoring: Zabbix, Munin, Cacti, Nagios - CMS : Wordpress, Drupal, Magento, Joomla, CS-Cart  less

    nginx linux-system-administration centos django-framework git amazon-ec2 apache-administration postfix exim virtualization zabbix mysql postgresql ruby-on-rails ruby python munin 00 more less
    • $30.00 HOURLY RATE
    • 5.0
    • 1342 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 5 TESTS
  • Linux Administrator, AWS, Nginx, Ubuntu, CentOS, EC2, Plesk, HAProxy

    8+ years of experience in: ** LAMP/LEMP(Nginx) administration and server hardening (Ubuntu, Debian, Centos,RHEL,HAProxy, Ruby/Thin deployment DevOps, Python/Django deployment DevOps,Nagios, fail2ban..) ** Amazon web services - AWS (EC2, VPC, RDS, S3, Route53, Cloudfront, Elastic Load Balancer … more

    8+ years of experience in: ** LAMP/LEMP(Nginx) administration and server hardening (Ubuntu, Debian, Centos,RHEL,HAProxy, Ruby/Thin deployment DevOps, Python/Django deployment DevOps,Nagios, fail2ban..) ** Amazon web services - AWS (EC2, VPC, RDS, S3, Route53, Cloudfront, Elastic Load Balancer, AutoScaleing, etc..) ** Nginx rewrites ** Google pagespeed ** Linux troubleshooting ** VPS providers: Linode, Rackspace, Amazon(AWS), MediaTemple, HostGator, Cloudflare, MaxCDN, CloudFront, NameCheap, GoDaddy, DigitalOcean, EC2, Bluehost ** Parallels Plesk ** Odoo/OpenERP installation ** VPS administration ** AWS EC2 administration ** VMware vSphere ** NewRelic ** fail2ban ** HAProxy ** keepalived, vrrp ** Nagios monitoring ** Elastic Load Balancer ** LINUX deployment and migration ** Rackspace Cloud Services ** Ruby on Rails app deployment ** Python - Djengo app deployment ** CPANEL, PLESK, WEBMIN, SHELL/SSH administration ** proftpd, pure-ftpd, pure ftp ** DNS, BIND, PowerDNS ** SSL certificates ** Site migration ** Network troubleshooting ** CSF firewall ** VPN ** Cisco, Mikrotik, Juniper Networks, Extreme Networks.. ** Linux PENTAHO deployment ** Squid, AiCache, AiScaler ** CVE-2014-0160 - OpenSSL Heartbleed patching. EXPERIENCE: Knowledge in Linux networking and service management, such as APACHE server, Nginx, LAMP, LEMP, LNMP, MYSQL, POSTGRESQL, tcpdump, haproxy, WIRESHARK, tshark, URL rewrite. Eight years of first hand experience in network and linux administration, support and Core Network design in Telecom environment. Excellent knowledge of various tasks such as: routing, BGP, VPN, Layer 3 networking(Routing), Layer 2 networking (LAN switching), VLAN, OSPF, RIP, network and packet troubleshooting. Working experience with various network equipment such as: Cisco, Juniper Networks, Extreme Networks, HP networking, MikroTik RouterOS, Ericsson OSS, Redback Networks and so on.. Experience with various providers such as: -AMAZON WEB SERVICES (AWS, EC2..) -RACKSPACE -HOSTGATOR -GoDaddy -MediaTemple -Cloudflare -NameCheap -LINODE -QuickWeb -HAProxy -etc.. -WHMCS RESELLER setup and migration on project or permanent basis. Including DNS, EMAIL, WORDPRESS migration -CPANEL, PLESK, WEBMIN, H-sphere, SHELL administration -SSL certificates Also available for packet and network congestion inspection. Having problems with BGP load balancing in multihome environment, need help or advice, contact me! :) Dedicated SERVICE MONITORING on own server with escalation on your own mail address  less

    amazon-ec2 lamp-administration linux-system-administration network-administration rackspace-cloudservers plesk cpanel nagios tcp-ip cisco-routers wordpress amazon-web-services computer-networking bgp juniper-routers dsl-troubleshooting network-security vpn openvpn dns bash mikrotik-routerboard mikrotik-routeros 00 more less
    • $45.00 HOURLY RATE
    • 4.9
    • 2710 HOURS
    • CROATIA
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 9 TESTS
    GROUPS:
  • Android and Web Developer, System Administrator, Translator EN/RU/UA

    Hi, my name is Alexey. I'm fully working from the 2003 as a System and Network Administrator. Since 2008, I writing a web applications with Ruby on Rails. Also from 2011, I develop apps for Android-powered devices. Over the … more

    Hi, my name is Alexey. I'm fully working from the 2003 as a System and Network Administrator. Since 2008, I writing a web applications with Ruby on Rails. Also from 2011, I develop apps for Android-powered devices. Over the last 3 years, I have developed a wide range of Android Applications for small businesses. I have a Magister in Intelligent Decision Support Systems from Kharkov National University of Radioelectronics, in the Ukraine. Listed below are my experience and skills. Android Developer skills: — Android (2.x & 4.x): Fragments API, Location and Sensors API, SQLite, UI, Services, Maps, Parse.com, etc; — Android Material Design for 5.0 and backport for 4.x. — Java Core: Java Core, Multithreading, Collections API, etc; — IDE: Android Studio, Eclipse; — VCS: Git, SVN; — SQL; Web Developer skills: — Core web: XML, JSON, HTML5/CSS3, JavaScript, JQuery; — Languages: Ruby, PHP, Python; — Frameworks: Rails, AngularJS, NodeJS; — Databases: Mysql, Postgresql, SQLite. System and Network Administrator: — OS: FreeBSD, Linux, Windows; — Web-servers: nginx, Apache; — VoIP: Asterisk and any hardware voip phones; — Databases: Mysql, Posgresql; — Mail servers: Sendmail, Postfix; — Networking: dhcp, dns (named, unbound), firewalls (Iptables, Openvpn, ipfw, PF), Microtic devices, Samba; — Monitoring: Zabbix; — Bash scripting. All of this skill help me do my work fast and efficiently.  less

    android-app-development mobile-app-development java sql web-programming ruby-on-rails php html5 voip-administration network-administration 00 more less
    • $10.00 HOURLY RATE
    • 5.0
    • 0 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 9 TESTS
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