Candidates 31
$6000 / mo
≈ $72000 / year net
Ruby on Rails Full-stack Developer
Ukraine · 8 years of experience · Upper-Intermediate ·Published yesterday
Ukraine · 8 years of experience · Upper-Intermediate ·Published yesterday
6+ years of experience with vanilla JavaScript
5+ years of experience writing React applications
~9 month of experience with Vue.js
Experience with PostgreSQL, ElasticSearch, AlgoliaSearch, Redis, Sidekiq.
I'm a full-stack developer, and I like switching between backend and frontend tasks often. Have experience with SASS and various fontend frameworks, such as Bootstrap 3/5, bulma, spectre.css, Vuetify, Blueprint.js. A fan of Ramda.
Before that I worked for internx for more than three years as lead developer/architect and during that time I had:
- completely rewrote react app, which reduced codebase 3 times;
- optimized heroku stack which decreased expenses 6 times;
- got rid of all the memory leaks;
- integrated background jobs;
$4000 / mo
≈ $48000 / year net
Ruby on Rails Developer
Ukraine · 4 years of experience · Intermediate ·Published 1 May · In passive search
Ukraine · 4 years of experience · Intermediate ·Published 1 May · In passive search
4 years of work as a RoR developer.
$6000 / mo
≈ $72000 / year net
CTO / Solution Architect
Ukraine · Kyiv · More than 10 years of experience · Upper-Intermediate ·Published 30 April
Ukraine · Kyiv · More than 10 years of experience · Upper-Intermediate ·Published 30 April
Soft skills:
- Emotional intellect
- Critical thinking
- Work in the mode of uncertainty
- Introspection
- Mentoring
- Psychology
- Creativity / Developed sense of beauty
Hard skills:
- Ruby, Rust, JS, TS
- PostgreSQL, MS SQL, Cassandra, Hadoop, Elastic Search
- React(Nextjs), Vue(Nuxtjs)
- Microservices, event-driven architecture (EDA), SOA
- Terraform, AWS, Kubernetes, GitOps, CI/CD (GitHub Actions, Jenkins, Gitlab CI/CD)
- Bitcoin Core rewrote the language into Ruby in order to develop an explorer without nodes - that is, I know to the smallest detail how bitcoin is tripled
Work Experience:
March 2021 — March 2024: CTO in Marketplace NFT.
May 2020 — September 2021: CTO/COO/Developer in Blockchain, Defi Tools.
April 2019 — January 2020: CTO/Developer in Cryptocurrency exchanger.
August 2015 — April 2019: CTO/CoFounder in Blockchains explorer.
February 2016 — April 2017: CTO in Blockchain, cryptocurrency company.
January 2009 — July 2015: CTO/CoFounder in Telecom company with client ONO/Vodafone.
I am most interested in FinTech, Blockchain, EdTech projects.
$3000 / mo
≈ $36000 / year net
Ruby on Rails Developer
Ukraine · Kyiv · 2.5 years of experience · Upper-Intermediate ·Published 29 April · In passive search
Ukraine · Kyiv · 2.5 years of experience · Upper-Intermediate ·Published 29 April · In passive search
- Practical knowledge of OOP, Design Patterns
- Experience in troubleshooting and debugging applications
- Knowledge of the deployment process;
Work experience:
- I created a new monolith e-commerce app for NY typography shop, using Rails 6, Ruby 2.6, PostgreSQL, and AWS; during this work, I was lucky to learn from a senior developer, which is how my passion for it was born.
- Next, I worked in a team, which created an exchange-like service for managing stock- and crypto-wallets and dynamically automating the trading. I was responsible for the whole microservice responsible for the management and user interactions of the entire system. Using Rails 7, Ruby 3.1, PostgreSQL;
- Currently working on
$5000 / mo
≈ $60000 / year net
Senior Ruby/JS/Elixir/whatever Developer
Ukraine · Kyiv · More than 10 years of experience · Upper-Intermediate ·Published 28 April
Ukraine · Kyiv · More than 10 years of experience · Upper-Intermediate ·Published 28 April
JavaScript, CoffeeScript, jQuery, Backbone.js, Marionette.js, HTML (haml, slim, skim), CSS, Zurb Foundation, Bootstrap
PostgreSQL, Redis
Node.js
Nginx
git
Elixir
?
Can work without initial knowledge transfer from previous devs.
Can integrate third-party service which documentation is unreliable/missing.
$4000 / mo
≈ $48000 / year net
Ruby on Rails Developer
Ukraine · Kyiv · 7 years of experience · Upper-Intermediate ·Published 23 April
Ukraine · Kyiv · 7 years of experience · Upper-Intermediate ·Published 23 April
In middle-size companies like Aviasales, the leader in metasearch for flight tickets. I received experience working with Elixir, optimizing an app to millions of requests.
My passion for technology goes beyond programming as I strongly believe in creating solutions that bring business value. I am developing a multidisciplinary mindset, keep learning and exploring different areas.
$3000 / mo
≈ $36000 / year net
Ruby on Rails Developer
Ukraine · Kyiv · 5 years of experience · Upper-Intermediate ·Published 22 April
Ukraine · Kyiv · 5 years of experience · Upper-Intermediate ·Published 22 April
with attention to detail. Readiness for complex projects and their management.
- myHomeIQ
Implement OpenSearch (Elasticsearch), SendGrid, Twilio Rollbar, Zapier integration, zapier apps written on js
- Intelligence
Setup project and development project. Project optimization and acceleration, partitioning one table into several (Index, Trigger, Partition).
- Flat Planet
Implementation of google maps and AI (Chat GPT)
- Meta Studio
Implementation of the payment system through the
blockchain, a microservice was written in Python. A live
stream was also made
- Travel Point
Setup integrations: DRCT, Galileo, Amadeus, Opendatabot. Accelerated project performance by 30 times. Optimization and reworking project.
- Djem
Creation of two telegram bots to work together on an application to call a taxi
- SpotEasy & Wishew
Development project and implement Stripe
Projects
RubyGarage, ExpertBox, Cycle, Ahwwa, CML
Worked in Python, wrote projects on Django and Flask and worker Full-Stack, Team Lead
Responsibilities:
• Backend API development
• Unit test coverage (100%)
• Feature test coverage (100%)
• External API implementation (Stripe, Twilio, SendGrid, Zapier, DRCT, Galileo, Privat24, etc)
• Swagger Documentation
• Frontend development
• Code Reviews
• Refactoring
• Feature development
• Testing
• Optimizations
• Analysis
Tools and Technologies:
• Ruby, Ruby on Rails
• RSpec (Unit, Feature)
• Cucumber
• Capybara
• Redis
• Docker
• Sidekiq
• ElasticSearch
• CI/CD, CirlcleCi
• Rollbar
• Centry
• Trailblazers
• PostgreSQL
• Active Job
• Active Admin
• OOP, Design Patterns, SOLID
• BDD, TDD
• JS, NextJS
• HTML/CSS
• SQL (Index, Trigger, Partition)
I know how to work with a team, as well as without, I know how to work according to scrum. I acted as Team Lead and Full Stack in some projects.
$2500 / mo
≈ $30000 / year net
Ruby on Rails developer
Ukraine · 3 years of experience · Upper-Intermediate ·Published 19 April
Ukraine · 3 years of experience · Upper-Intermediate ·Published 19 April
Since January 2024, I have been enhancing my technical skills at Luckyfit, where I serve as a Full Stack Developer focusing on front-end and back-end development. My front-end work involves utilizing ExtJs, HTML5, and CSS to create engaging, responsive user interfaces. On the back-end, I engage in migrations and the development and enhancement of existing interactors, controllers, and models in a Ruby on Rails environment. This role demands a strong understanding of both the visual and functional elements of web applications, ensuring a seamless and efficient user experience.
Also, I'm working on my own pet project "Book of Recipes". Parallel to my professional journey, I pursued academic excellence, completing a Bachelor of Computer Science at NaUKMA, Kyiv, in July 2022, and currently working towards my Master's degree in the same field.
Continued Learning and Certifications: my dedication to ongoing education is evident from completing courses such as SQL Basics for Data Science from the University of California, Davis, and various specialized courses in machine learning and cloud technology essentials. Additionally, I hold a Certified SAFe Practitioner credential from Scaled Agile, Inc., reflecting my commitment to staying abreast of industry developments and methodologies.
Personal Project: I'm developing the Book of Recipes app, improving my full-stack development capabilities. This project involves using Ruby on Rails for the backend and React for the frontend, along with PostgreSQL, Rspec, Rubocop, Git, Trello, Postman, and ChatGPT4. It highlights my practical application of knowledge and skills in a real-world project.
$3000 / mo
≈ $36000 / year net
Project Manager Ruby On Rails
Ukraine · 10 years of experience · Intermediate ·Published 16 April
Ukraine · 10 years of experience · Intermediate ·Published 16 April
We are Ruby on Rails developers, with 7+ years expert Rails development experience, 10+ LIVE applications, several Rails CORE contributions & 1000's of hours development time.
If you have *ANY* problems with a Rails app (framework management, hosting, VPS deployment to third party API integrations), we can give assurance of instant support.
Our team have extensive programming experience, and constantly work on MANY different projects (on and off Rails) - we have a deep affinity with computing & are professional developers.
--
This kwork is for Ruby on Rails repair, maintenance or upgrades → if you have *any* issues with a Rails app, we can resolve them for an affordable price + ongoing support:
- Heroku setup
- Rails application fixes
- Cloud infrastructure management
- API connectivity issues
- Custom integrations (please contact us)
- Deployment pipelines
- VPS provisioning & deployment
Please appreciate it may take time to resolve certain issues, depending on scope.
Являюсь сертифицированным проектным менеджером.
Опыт в строительстве, оптово-розничной торговле, рекламе и программировании.
Сейчас занимаюсь собственными проектами с сфере создания индивидуальных сайтов, в роли менеджера проекта, маркетолога, также являюсь их автором, т.е. реализация проекта от идеи до полноценной работы.
Работаю с дизайнерами, программистами, сео специалистами, специалистами по продажам, руководителями подразделений, тестерами. В мои функции входит - идея,поиск исполнителей, постановка задач, систематизация проекта, контроль выполнения задач, общение с заказчиком, сдача проекта.
Главный приоритет: профессиональный рост в сфере управления IT проектами.
Есть большой опыт в поиске квалифицированного персонала.
$6500 / mo
≈ $78000 / year net
Ruby Engineer, Fullstack
Ukraine · Kyiv · More than 10 years of experience · Advanced/Fluent ·Published 16 April · In passive search
Ukraine · Kyiv · More than 10 years of experience · Advanced/Fluent ·Published 16 April · In passive search
- 20 years frontend
- TDD, rapid prototyping
- fluent English
- work alone or in a team
- mentoring
- developing projects from scratch
- gathering requirements, interaction with customers
- worked in startups and product companies, freely communicated with English-speaking customers and stakeholders
- voice assistant which can pull data from Salesforce and Netsuite
- mobile apps with ReactNative
- made games with Unity and Unreal Engine