Candidates 51
$1000 / mo
≈ $12000 / year net
Ruby on Rails Developer
Ukraine · Kyiv · 1.5 years of experience · Upper-Intermediate ·Published yesterday
Ukraine · Kyiv · 1.5 years of experience · Upper-Intermediate ·Published yesterday
Experienced Ruby/Ruby on Rails back-end developer with a year and a half of commercial experience in web development. I collaborated with a small team of dedicated enthusiasts on a project that has been developing for 4 years. The project was constantly enriched with new features according to the client's requests.
Performed:
- extending existing functionality
- developing new features
- writing tests
- bug fixing
- deployment processes
- communicating with stakeholders
- collaborating with a team: PM, Team Lead, Senior BE dev, FE dev, and CEO.
Technologies I've worked with: Ruby, Ruby on Rails, PostgreSQL, MySQL, Redis, Sidekiq, Devise, Slim, ActiveAdmin, RSpec, Capybara, Git
Education: Bachelor's and Master's degrees in Computer Engineering, with a specialization in Computer Systems and Networks, earned 2017 - 2023.
I'm seeking new opportunities to expand my skill set, tackle challenging tasks, and bring innovative ideas to life.
$500 / mo
≈ $6000 / year net
Junior Ruby
Ukraine · Kyiv · No experience · Intermediate ·Published 1 May
Ukraine · Kyiv · No experience · Intermediate ·Published 1 May
Command line chess written in ruby:
-Designed and coded command line chess game where two players can play against each other.
-Adheres to allrules of original chess, such as preventing illegalmoves, checking checkmate or stalemate, etc.
-Developed unittests for key functionalities to ensure game quality.
Command line guessing game written in ruby:
- Designed and coded command line guessing game .
- The game was developed using Test-DrivenDevelopment(TDD).
«Software Testing Foundations: Test Techniques», 2023
«Understanding Manual Testing», 2023
«Programming Foundations: Software Testing/QA», 2023
«Learning Jira Software», 2023
«Planning and Releasing Software with Jira», 2023
$3500 / mo
≈ $42000 / year net
Full stack Ruby / Node.js / React.js developer
Ukraine · Kyiv · 8 years of experience · Upper-Intermediate ·Published 1 May
Ukraine · Kyiv · 8 years of experience · Upper-Intermediate ·Published 1 May
$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.
$1100 / mo
≈ $13200 / year net
Ruby on Rails Developer
Ukraine · Kyiv · 2 years of experience · Upper-Intermediate ·Published 29 April
Ukraine · Kyiv · 2 years of experience · Upper-Intermediate ·Published 29 April
Mainly worked on maintaining legacy projects, but also got experience in building MVPs.
I have some experience with frontend frameworks, namely React.
$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
$1300 / mo
≈ $15600 / year net
Ruby on Rails Developer
Ukraine · Kyiv · 1.5 years of experience · Upper-Intermediate ·Published 29 April
Ukraine · Kyiv · 1.5 years of experience · Upper-Intermediate ·Published 29 April
contributed to a range of projects, from API integrations to web applications.
My passion for continuous learning and problem-solving drives me to deliver top-notch results and exceed expectations.
I have a year of experience working in a company and more than two year’s of non-commercial experience with Ruby on Rails, React. Also studied Python at an elementary level. I’ve completed two courses on React by Meta. I ve been instrumental in creating exceptional web solutions.
My experience encompasses the successful support of two major projects:
Car Marketplace:
- Seamlessly integrated complex API.
- Conducted rigorous testing to ensure robust
functionality.
- Demonstrated proficiency in SQL and
Elasticsearch.
- Drove the implementation of advanced
features.
Complaints Management:
- Developed and integrated API.
- Upheld stringent testing standard.
- Good employed Sidekiq and Redis for
asynchronous task.
- Continuously enriched the project with
innovative features.
I spearheaded the development of a new website
segment for subscription-based users,
emphasizing clean code and exceptional user
experiences.
Ruby on Rails
Python
GIT
Web Development
HTML/CSS/JavaScript
React
HAML
SQL/Database
OOP
Elasticsearch
Redis
RSpec,Capybara & testing
gems
Grape API
REST API
Metaprogramming
Sidekiq
Agile/Scrum
Problem-Solving
Bachelor’s degree of KPI, Department of mathematical analysis and probability theory
Specialty: Actuarial and Financial Mathematics
Used to be a professional swimmer, really into any sport that has a ball and love fishing. Have a driving license category B, want to gain new knowledge and make my contribution to the development of our country.
$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.
$3000 / mo
≈ $36000 / year net
Full-Stack Engineer (Ruby on Rails, Angular)
Ukraine · Kyiv · 5 years of experience · Advanced/Fluent ·Published 27 April
Ukraine · Kyiv · 5 years of experience · Advanced/Fluent ·Published 27 April
Experienced with:
- Angular (RxJS, NgRx, SSR/SSG)
- React
- RoR
- NodeJS
- PostgreSQL, mongodb, Redis
- REST API
- AWS, Azure, Docker
- TailwindCSS
- Material UI
- Worked as a part of Agile Team on planning, developing, bug fixing and testing
- Faced challenging tasks on frontend development, such as Internationalization, SEO optimization with SSR and SSG, upgrading Angular versions, reducing load time
- Developed dashboard for clients using React
- Took a crucial part in migration from AWS to Azure
- Communicated directly with clients and providers
$1800 / mo
≈ $21600 / year net
Middle Ruby Developer, Full Stack Ruby on Rails
Ukraine · Kyiv · 2 years of experience · Upper-Intermediate ·Published 25 April
Ukraine · Kyiv · 2 years of experience · Upper-Intermediate ·Published 25 April
Middle Ruby Ruby on Rails, FTL, працював з грудня 2020 по лютий 2022, працював над різними проектами, зокрема CRM, fintech та e-commerce. Працював з Redis, Sidekiq, PostgreSQL, ElasticSearch, Heroku, Rubocop, React, cancancan, capybara, rspec, та інші.
Ruby on Rails, SoftServer, з березня по червень 2020. Створив з командою додаток відповідно до специфікацій з використанням Ruby on Rails і розгорнув його на платформі Amazon Web Services (AWS), включаючи EC2, S3 і SES використовуючи сучасні методології і Rails 6.
- Розробив та впровадив сервер розрахунку в приватній хмарі за допомогою OpenStack, Bash та Python, збільшив в 3 рази швидкість виконання розрахунків за допомогою налаштування паралельного обчислення на всіх доступних ядрах машини та звільнення ресурсів після розрахунку
- Контейнеризував сервер розрахунку за допомогою Docker для простоти розгортання та розробки на будь-якій платформі(Linux, Windows, Mac(ARM))
- Співпрацював з командою розробників для створення та оптимізації продуктивності бази даних PostgreSQL
- Налаштував автоматичне додавання NFS серверу до створеної в хмарі машини для централізованого зберігання даних що дозволило прискорити зберігання та зменшити логіку;
Middle Ruby Ruby on Rails:
Розробив та підтримував веб-додаток на Ruby on Rails(API + CRM) та React
- Впровадив SSO для безпечного доступу до веб-додатку
- Створив систему автоматичної генерації PDF-звітів для надсилання клієнтам за допомогою Redis та Sidekiq
- Впровадив систему аккаунтингу та шифрування фінансових даних.
Ruby on Rails, SoftServer:
- Створив додаток відповідно до специфікацій з використанням Ruby on Rails і розгорнув його на платформі Amazon Web Services (AWS), включаючи EC2, S3 і SES
- З використанням Redis та SideKiq налаштував автоматичну генерацію та відправку повідомлень на пошту що покращило комунікації з користувачами, дозволилр сповіщети про важливі події або оновлення, а також підтримувати зв'язок з клієнтами та забезпечило надійну доставку інформації
- Впровадив JVT token authorithation для безпечної авторизації користувачів через API
Зараз повністю готовий до нових викликів, підтримувати і реалізувати корпоративні цілі, бути активною та цілеспрямованою частиною вашої команди, сприяючи розвитку проектів та бізнесу в цілому.