25 May

Ruby on Rails Developer 🔥

Kyiv · $5000 · 10 years of experience · Advanced/Fluent

I am an experienced full stack web/mobile developer with extensive experience of RoR framework and MVC/SOLID patterns. Active member in the open source community. I specialise in building products from conception to final product. I have more than 8 years of experience building Ruby based applications using micro-SOA approach. Master of scrum and well versed in agile based software development cycle. Experienced with test driven development and testing using frameworks such as rspec, capybara/selenium. I can work in a rapid sprint cycle environment on high traffic web sites. I am well versed in developing scalable applications.

Design Patterns, Git, Gitlab CI/CD, jQuery, Linux, Nginx, OOP/OOD, ORM, PostgreSQL, RSpec, Ruby, Ruby on Rails, SQL, TDD, Jira, MySQL, Redis, Selenium, Ubuntu, Underscore.js, Unix, Jenkins, UML, Backbone.js, Erlang, Capybara, AWS, Sidekiq, K8s , Docker Swarm, XML, OOP, REST API, Docker

I pride myself on being a pragmatic developer and a person who can hit the ground running on any project. I can easily get up to speed on software by just reading source code and without reading documentation.

I want to obtain an exciting position developing applications that change the world.


24 May

Middle Ruby On Rails Developer 

Kyiv · $2600 · 3 years of experience · Advanced/Fluent

За 3.5 года работал на разных проектах в сфере недвижимости и обучения. В основном использовал Rails, и связанные технологии, PostgreSQL, когда приходилось - JS/HTML/CSS. На образовательном коммерческом проекте занимался полностью и бэкендом, и фронтендом, так как был единственным разработчиком. Выполнял разнообразные задачи, имплементировал новые фичи, коммуницировал напрямую с заказчиком, много работал с базой данных для формирования статистики и оптимизации запросов. На последнем проекте работал с командой над большим проектом в сфере недвижимости. Выполнял новые функции для пользовательского интерфейса, работал над задачами по SEO, занимался миграцией данных, и увеличением тестового покрытия. Вся работа происходила по методу Scrum, участвовал в обсуждениях задач с американскими заказчиками, предлагал свои решения, в целом много общался на английском.

Ruby, PostgreSQL, RSpec, Git, REST API, MySQL, OOP, JIRA, HTML, Docker, Ruby on Rails, SQL, jQuery, CSS, Capybara, JSON, Test driven development

Интересует работа в больших проектах в крупных командах, желательно с общением на английском с заказчиками. Интересует работа с back-end частью на Rails, работа с API, работа с GraphQL, в остальном открыт ко всему новому.


21 May

Javascript Developer

Kiev · $2000 · 4 years of experience · Advanced/Fluent

Front-end, JavaScript developer. Bachelor of Computer Science, Taras Shevchenko National University of Kyiv. Main skills: JavaScript, React, Web Applications, Mobile Applications (React Native) Other skills: Ruby on rails (basics) Most of the time worked at a product company as a React Native developer. Have released applications in AppStore / Google Play and web applications. Worked on different projects in the outsourcing company for a while.

React, React Native, Frontend, JavaScript, Git, Web Development, Node.js

I prefer product companies with a communicative experienced team, flexible schedule with a possibility to work remote some days in a week or full remote.


19 May

Lead Ruby On Rails Developer ‍

Kyiv · $6500 · 10 years of experience · Advanced/Fluent

Ruby on Rails developer with 8+ years of experience working on projects from different fields and locations. I have more than 5 years of experience working fully remote for US-based companies. Last couple years working on-site for European companies. Working for companies of all sizes, from start-ups and scale-ups to big international corporations. Team oriented and well communicating person. With experience of being part of a solution team focusing on developing architectures and implementation strategies of reworking big legacy projects. Leading less experienced developers to quickly get involved in complex tasks. Working closely with devops teams to transform applications into modern scalable architectures. Set up an automated testing framework and provide training to QA engineers to utilize it for their test scenarios. Integrated various systems into a data lake for a DWH team. I'm passionate about making well-crafted software. I never go off a TDD trail. Enjoying being part of an agile high-velocity team with a culture of fast iterations. Feel free to contact me for my resume with detailed work experience.

AWS, Git, Heroku, RSpec, Ruby, Ruby on Rails, TDD, bash, pry (pry-de), SQL, Unix, VIM (working editor/ide), Algorithms, BDD, DevOps, Jira, Nginx, OOP, PostgreSQL, Redis, Scrum, UML, Kanban, Sidekiq, Linux, Selenium, Capybara, Sphinx, CI, REST API, MySQL, Docker

Reworked legacy monolithic applications into microservices architecture with some instances that handle up to 30k rpm. Optimized an advertisement delivery platform, reducing response time by ⅓ per request. Corrected spending for production AWS account by more than ~5k per month. Improved development workflows using modern devops tools. Contributed to big open source projects (cancancan, gollum).

I would prefer working in a remote-first company with API-first development strategy. I would like to work in a company that values results, transparency, sharing, freedom, efficiency, collaboration, directness, kindness, diversity and quirkiness.


16 May

Розробник RoR, Java, Python, C++, HTML 

Dnipro, Kyiv · $4200 · More than 10 years of experience · Advanced/Fluent

RoR 8+ deploy, support, bugfix RoR 2+ development, devops Python 6m dev

Ruby on Rails, PostgreSQL, Git, Ruby, JavaScript, RSpec, REST API, MySQL, Linux, Redis, OOP, HTML, jQuery, SQL, AJAX, Docker, JSON, Nginx, AWS, CSS3, Sidekiq, C++, JS, Redmine, Python, Devise, AWS:S3/Glacier, AWS:ASG/EC2, AWS:Redshift, AWS:Aurora, AWS:CodePipeline, Blockchain, Ansible, Proxmox, OpenNebula, ELK, CoffeeScript, Angular 6, Capybara, Selenium, slim

silver award technetium challenge 2019

Office full-time and/or relocate to Kiev are only for vendor-clients. Or company having only long-term contacts with clients.


9 May

Senior Ruby Developer / Ruby Tech Lead

Remote work, Ukraine · $5000 · 8 years of experience · Advanced/Fluent

Unix, Ruby, Ruby on Rails, Sinatra. Javascript, jQuery, Ember.js, Vue.js, HTML 5, CSS 3.m Capistrano, Heroku. AWS. Postgresql, Mysql, MongoDB, Redis. Cucumber, RSpec.

CoffeeScript, HTML5, JavaScript, PostgreSQL, Redis, REST API, Ruby, Ruby on Rails, AWS, ember.js, MongoDB, MySQL, RSpec, Unix, WebServices, CSS3, Cucumber, SASS, Vue.js, Scrum, Capistrano, Algorithms, SQL

During my professional career I've designed and implemented various software architectures, took part in different developers teams, had experience as a team leader, tech lead and mentor. From time to time I take part in public meetings regarding to IT sphere. Also I feel passion to mentoring, I teach growing specialists at JavaScript courses.

Interesting challenging projects, good communication, professional growth.


6 May

CTO, Solution Architect, Tech Lead

NYC, Bay Area, Kharkiv, Lviv, Kyiv · $10000 · More than 10 years of experience · Advanced/Fluent

Have been a computer geek since before it was cool. Programming for over two decades, these days I do all kinds of engineering: front-end, back-end and even reverse :-) Fluent english, strong leadership and management skills.

Rails, Ruby, Ruby on Rails, Web Development, Algorithms, Automation, CSS3, DevOps, Highload, HTML5, JavaScript, Linux, Python, ReactJS, Test driven development (TDD), AWS, MySQL, Networking, Perl, PostgreSQL, Scala, Clojure, MongoDB, SQL, Agile, Scrum, REST API, Docker, Git, Node.js, TDD, Microservices

I specialize and have deep experience with backend services and infrastructure of highload projects (>5M unique daily visits). Guided a team through a transition to a formal workflow, introduced devops practices, significantly improving development process. Architected and deployed a fair number of performance optimizations. Led a greenfield project (rails and react) from discovery phase to production deployment, establishing team culture and best engineering practices (CI pipeline, pull requests, code reviews, automated style checks, etc). Developed a low-latency network service (scala), an enterprise json-api service (scala), a ruby gem, an e-commerce application (rails), a semi-anonymous imageboard (es2015), an enterprise messaging application (rails, react.js), an MVP of an addiction treatment platform (rails), a real-estate marketplace webapp (rails, react.js), an advertising platform (rails, python, es2015), a CRM webapp (rails). Presently working on real estate and asset management services (rails, node.js, react.js, python, scala, es2017, aws).

Looking for technically challenging problems, which may include, but not limited to highload devops, artificial intelligence, complex UIs, big data, low latency; mature startups, passionate product teams. Not looking for trivial, repetitive, lower-skilled occupations, outsourcing bodyshops.


22 April

Ruby developer

Kyiv · $2700 · 2 years of experience · Advanced/Fluent

Jan 2019 - Apr 2020, Studytube Position: Ruby developer Responsibilities: • Developing new functionality • Elaborating software requirements • Code reviews • Tracking errors on production instance • Implementing urgent critical bug fixes • Covering all produced code with tests using Rspec • Technologies: Ruby on Rails, MySQL, Redis, Elasticsearch, Docker, AWS Apr 2018 – Dec 2018, CHI Software Position: Full-stack Ruby developer Responsibilities: • Development API for mobile devices and frontend application • Web-app development (frontend) • Clarification software requirements directly with stakeholder • Technologies: Ruby on Rails , AngularJS, PostgresQL

Ruby on Rails, Ruby, RSpec, PostgreSQL, SQL, Docker, Linux, Redis, REST API, Git, AWS, JavaScript, OOP, SOLID, MySQL, BASH, ElasticSearch


20 April

Senior Full Stack Ruby on Rails/ReactJS Developer

Remote work, Ukraine · $4000 · 4 years of experience · Advanced/Fluent

Последняя роль: С помощью ещё 2 front-end за 7 месяцев подняли лидирующее CRM решения в северное Европе на рынке похоронных услуг. Моя роль: product manager/team lead/fullstack developer. Стак: Rails, React, Postgres, Memcached, AWS::SQS, Docker, Kubernetes, Linux, Nginx, Webpack. Архитектура - модульный монолит, минимум MVC, все что в конечном итоге юзалось из Rails -> routing, autoloading, action_mqiler, active_job, active_model (почти как репозиторий), active_support. Challenges - много фич, фичи зависят от локали, много часовых поясов, много интеграцией, много background processing, tenant-specific фичи, сложный и большей UI.

Ruby on Rails, Ruby, PostgreSQL, Git, JavaScript, RSpec, REST API, MySQL, Linux, OOP, SQL, Docker, Sidekiq, Nginx, JSON, Redis, English, REST, Capybara, TDD, React, MongoDB, Node.js

С помощью ещё 2 front-end за 7 месяцев подняли лидирующее CRM решения в северное Европе на рынке похоронных услуг.

Идеально было бы поработать над масс-продукте или saas, high load, желательно bootstrapped или уже прибыльный. Не хотелось бы работать над tight budget стартапапими или MVP, but...depends :)


14 April

Backend developer

Kyiv · $3000 · 4 years of experience · Advanced/Fluent

4 years of fullstack development, 2+ years of commercial NodeJS development involving Postgresql, MongoDB, RabbitMQ, React, Jest. Experinced in creating RESTful API`s and using a wide spread of external API`s (Twitch, Facebook, Vk, Steam (w economy), payment aggregators). A skilled team player with experience of mentoring a trainees and working with clients.

Git, Ruby, Ruby on Rails, JavaScript, Node.js, OOP, PostgreSQL, Redis, Sinatra, Test driven development (TDD), C#, Elixir, MySQL, React, MongoDB, TypeScript, REST API, Docker, Linux, NodeJS

Several publications (game theory + computer science)

Modern tech stack, good communication


  • 12 candidates found. Page 1 of 2.