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Rating is 4.7 out of 5.
4.7/5
based on 4,636 client reviews
  • US$70 hourly

    • 4.9/5
    • (26 jobs)
    13+ years of full-stack experience Stack: Ruby, JavaScript, Python, Go DevOps Skills: AWS, Docker, Kubernetes Favorite Tech: Rails, React, Elastic, PostgreSQL, ClickHouse, Kafka, MongoDB Areas of Expertise: Proficient in developing large-scale, reliable applications for high-load environments. Experienced in redesigning and refactoring legacy projects, including transitioning to microservices and optimizing performance. Skilled at creating custom APIs and integrating with existing ones, including Payment, Social, EDI, and Ticketing. Well-versed in video broadcasting solutions. Adept at implementing complex search systems. Industry Experience: Online gaming Trading platforms Payment systems Marketing platforms Video platforms User review and ticketing websites Recent Projects: (Links are prohibited, but you can easily google it) Earth-2 (Game) Scompler (Marketing Platform) Show-Score (User Reviews and Tickets)
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    React
    Apache Kafka
    ClickHouse
    DevOps Engineering
    RSpec
    Elasticsearch
    Ruby on Rails
    Kubernetes
    Golang
    Ruby
    PostgreSQL
    Docker
    Python
    MongoDB
    JavaScript
  • US$60 hourly

    • 5.0/5
    • (7 jobs)
    Hello, I am a web-development professional with 7+ years of experience(including 5 years of Ruby on Rails and 2 years of ReactJS) building and improving small to big live projects. Currently working with Elixir Phoenix projects and loving it a lot, especially LiveView. My core competency lies in the ability to jump into an existing project, read its code, and start delivering fixes, improvements and features without delay. As a professional, I want to be a reliable developer who will help you build a good product. I will hear what you need, evaluate it from different perspectives, based on my knowledge, then I will give you a feedback, we will clarify the task, and I will deliver what we agreed on. I do remember to keep a good balance between development speed, app performance and maintainability. Which means sane code cleaning, optimization or testing. I am striving to be reasonable, responsible and independent, with good emotional health and control. I am interested in a long-term collaboration, preferably part-time(to maintain good work-life balance). I am comfortable both solo and in a team. Currently I am in the GMT+3 timezone. Some of my interests: physical activity(walking, pong, badminton...), trekking, mindful scifi, chess, engineering, physics, biology and mind. List of relevant skills and experience Backend: * Ruby * Ruby on Rails * Elixir * Phoenix * LiveView * PostgreSQL, query optimization * REST, Delayed Jobs, caching, CSV import, concurrency handling * Authentication and authorization with Devise, JWT and Pundit * External API's: Facebook and other oAuth, Stripe payments, Currency conversions, Twilio phone calls and SMS, geocoding * Testing with RSpec, Capybara and VCR(TDD and BDD) * Search: Elasticsearch, Solr Frontend: * Twitter-Bootstrap adaptive layouts, CSS, SASS, PostCSS * JavaScript, CoffeeScript, ES6, Typescript, Immutable * libraries: Charts.JS, D3, FullCalendar, Google Maps API * ReactJS/Redux framework * WebPack integration with Rails DevOps: * Git/GitHub, Vagrant * Continuous Integration and Delivery with CircleCI * Hosting with Heroku * AWS S3, R53, CF, B2 * Docker
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    React
    Tailwind CSS
    Elixir
    Phoenix
    Twitter/X Bootstrap
    Ruby
    Web Development
    RSpec
    Ruby on Rails
    SQL
    Ecommerce Website Development
  • US$90 hourly

    • 5.0/5
    • (8 jobs)
    I am a software developer with over 15 years of experience in various roles. I have been working full-time as a freelance software developer for the past 11 years. In the past 5 years, my focus has been on Ruby on Rails and Javascript/Node/React development as well as Linux administration. I have developed various web applications from scratch such as CRM, ERP, production planning, maintenance management, and translation management software. I've also developed various back-office and administration/dashboard applications. I have used Linux for 20+ years and have experience with deploying applications and servers on various cloud hosts such as AWS, Azure, Digital Ocean, Linode, and Heroku. I'm also able to work as or directly with front-end designers and can turn most designs into HTML/CSS. For the design I use Figma. I have experience with various UI toolkits such as Tailwind and Bootstrap. All in all, I can offer services from design and development to deployment and production.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Ruby
    Bootstrap
    PostgreSQL
    CSS
    Linux
    Heroku
    Ruby on Rails
    SQL
    HTML5
    Web Application
    JavaScript
    Amazon Web Services
    React
    UX & UI
  • US$120 hourly

    • 5.0/5
    • (52 jobs)
    "An excellent experience. Sam quickly picks up on both the technical requirements of a job and also immediately contributes to the overall strategic analysis and goals. So valuable." - Tim, Cazenovia Software "Sam very quickly understood the context of my project, which has multiple moving parts/technologies/languages. He was able to advise on a clear way forward in a way that addressed my concerns and goals. Thanks Sam!" - Daniel, SimpleDiagrams "Sam was a very good communicator, he understood my requirements without too much direction and went above and beyond what was required of him to deliver a job very well done!" - Brad, Insure and Away I am a professional Ruby on Rails developer with over 15 years experience developing web applications on a variety of technologies and platforms. I have a strong focus on best practices, and test driven development (both front and back end). I prefer to get things done right the first time so you don't have to keep coming back to them. I enjoy working on challenging projects, and have experience in the following areas: - Testing (RSpec, Capybara, Cucumber, MiniTest, Teaspoon/Mocha) - Guard - ActiveRecord (prefer working with Arel, but I also have a lot of experience with SQL) - Devise, CanCan, Pundit - RailsAdmin, ActiveAdmin - Front end (many years experience working with JavaScript) - Heroku - DevOps (Vagrant, Puppet) - Linux - Deployment (Capistrano) Due to the many years experience I have with a large number of different technologies however, I can very quickly pick up new technologies. I would love to help you build a state of the art web application just as much as I would enjoy working on existing or legacy projects (developing new features, updating technologies, or bringing best practices and testing in to unstable or poorly structured code). English is my first language, and you can expect my communication to be prompt, polite and friendly. I will however not hesitate to speak out if I feel something is being done incorrectly, or can be improved upon. So if you have a project where you feel I can help out, please don't hesitate to get in touch!
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    RSpec
    Test-Driven Development
    Ruby on Rails
    JavaScript
    Ruby
  • US$100 hourly

    • 4.9/5
    • (16 jobs)
    I'm Fullstack Software developer with 8 years of working experience. I have helped various big and small startups to take their brilliant idea into well tested and easily maintainable software. - I am passioned to write maintainable code using common design patterns. - I have worked with many languages and frameworks, currently excited with Ruby on Rails and React.js - I have written big applications with millions of users so I have good experience with cashing, common security holes and dealing with big data.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Test-Driven Development
    Ruby on Rails
    GraphQL
    Elixir
    Ruby
    JavaScript
    React Native
    React
    Node.js
  • US$60 hourly

    • 5.0/5
    • (15 jobs)
    I bring over 20 years of experience in IT to the table, specializing in developing, implementing, and maintaining web applications. My expertise mainly lies in using Ruby and Python within UNIX environments. Currently, I focus on Ruby, but I've also worked extensively with Python and occasionally dabble in Swift, C++, Java, and other languages for various small projects or fixes. As web development often requires, I'm pretty handy with JavaScript to take care of the frontend needs. Since starting my freelance journey in 2005, I've dedicated most of my time to supporting web projects. This includes fixing bugs, making updates, and adding new features. I'm particularly good at working with legacy code and code written by others. I often find myself solving complex problems for big applications, which is something I really enjoy doing for my clients. Building projects from scratch is something I love, and I've gained a lot of experience in managing *nix servers and scaling projects. I typically handle everything needed to get a server up and running and deliver the final application to the users. In the last couple of years, I've also gotten involved in cryptocurrency projects and have become quite familiar with the technology. The latest related project I've been working on is a cryptocurrency arbitrage monitor, which is still in progress. When I'm not working on client projects, I like to explore new things and build various desktop applications as a hobby. I'm comfortable with many different programming languages and find it easy to pick up new ones for any new project I start.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Continuous Integration
    Integration Testing
    RSpec
    Automated Testing
    Unix System Administration
    Unit Testing
    Ruby on Rails
    Ruby
    Ansible
    SQL
  • US$11 hourly

    • 4.6/5
    • (5 jobs)
    I am 6 years of experience RoR engineer. I'm an easy learner and I like a challenge, that's why I'm willing to work hard and produce high-quality code. I'm here to work on exciting projects and to apply my skills to bring your brilliant idea to life. I can work both on the long-term and short-term projects, as long as they are interesting :) My main expertise: - Complex Ruby on Rails development - Automated testing with Rspec, capybara, minitest - Database design, implementation and performance analysis - Back end infrastructure - Version control with Git - Copyright management software My tech stack: - Ruby / Ruby on Rails, bash, Linux, MVC - PostgreSQL, MySQL, solr - Nginx, apache - Coffeescript, Javascript, DHTML/HAML/HTML5, CSS3, Bootstrap I am available to work full-time and ready to start immediately.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    DevOps
    Slim
    React
    Elasticsearch
    Angular
    Ruby on Rails
    Bootstrap
    Angular 2
    CoffeeScript
    HTML
    JavaScript
    MongoDB
    Sass
    MySQL
    LeSS Framework
    Ruby
    CSS
    PostgreSQL
  • US$25 hourly

    • 4.7/5
    • (23 jobs)
    I am full stack Ruby on Rails, React and React-Native developer having 6 years of experience. I have developed couples of web application using Ruby, Ruby on Rails, JavaScript, and TDD/BDD, Bootstrap. I have also experience in API development, API integration, Ruby Gem development and customisation of Ruby Gems, GIT/SVN and project management tools I have good experience in deployment web application on Heroku, EC-2, Digital Ocean. I love to work with Ruby on Rails, JavaScript, TDD/BDD. I prefer to use Agile software development. I did Master Degree in Computer I am able to work 40+/week. My best key skills are: My Skiils are: Core - Ruby and Ruby on Rails, Node Web application development Front end - React.js, Javascript, HTML, Bootstrap, CSS, design & interaction, rich interfaces Mobile App: React-Native, Redux. Database - MySQL, PostgreSQL Middleware - Redis/Resque, Memcached Architecture - Messaging/Message Queues, Backgrounding, Integrations Methodologies - Scrum/Agile, TDD, BDD, pair-programming Cloud server: EC-2, Digital Ocean, Heroku Version Control: GIT, SVN Project Management tools: Github, trello, pivotal, bitbucket, assembla, asana and many. Common Ruby Gems: Devise, Paperclip, CarrierWave, best_in_place, nested_form, friendly_id, jquery-autocomplete, sendgrid, jquery-fileupload-rails, simple_form, formtastic, omniauth, linkedin and so on. Skills/Experience - Enterprise-class Software-as-a-Service (SaaS) development - Working knowledge of full-text search technologies (Lucene, Sphinx, etc) - Working knowledge of Redis & Resque - Experience with Dev Ops for large scale Rails application - Strong debugging and data spelunking skills - Working experience of API Integration - Working Experience of Automation of Web application
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Cucumber
    Selenium WebDriver
    OAuth
    RSpec
    Heroku
    Twitter/X Bootstrap
    Selenium
    jQuery
    Ruby
    JavaScript
    Ruby on Rails
    SQL
  • US$15 hourly

    • 4.6/5
    • (4 jobs)
    I am a Ruby on Rails developer for around 3 years and have contributed/developed various web application and RESTful API. I liked Rails because it built web applications very quickly and I also used it to satisfy some fastidious customers I can help you to: - Build application from scratch, - Maintenance your app, - Refactor your legacy code, - Write Test for your entire system, - Develop new features, fix bugs, and tackle issues, - Optimize query or app performance, - Customize or add ActiveAdmin to your site, - Payment Integration using (Stripe), - Upgrade your Rails app! Technology that I have used so far: - Ruby, Ruby on Rails - Javascript, Ajax, jQuery - Front-end: html, slim, simple_form, Bootstrap - Databases: PostgreSQL, MySQL, MongoDB - Deployment: AWS, Heroku - Testing: Rspec, Mini-test - Payment: Stripe, Stripe Connect - Sidekiq - Better-errors - Kaminari - Will-paginate - Ransacker - ActiveAdmin - Faker - etc. Let's create something together and make the world a better place!
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Heroku
    Stripe API
    DigitalOcean
    Slim
    Tailwind CSS
    MySQL
    PostgreSQL
    JavaScript
    Front-End Development
    Amazon Web Services
    Ruby on Rails
    Ruby
  • US$65 hourly

    • 4.9/5
    • (76 jobs)
    I'm all about creating customized solutions for business challenges, without limiting myself to specific technologies. My aim is to make software work seamlessly with business goals, so we get results that really matter. 𝗪𝗵𝘆 𝗺𝗲? 🏆 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 Badge 🎖 𝟭𝟬𝟬% Job Success Score 🎖 𝟭𝟯+ years of experience 🎖 𝟭𝟬𝟬% client satisfaction ⭐ 𝟮𝟬𝗸+ hours worked on Upwork 🔹 My experience includes but not limited to: - Esports & Ecommerce Solutions - Education & Test Prep Softwares - Real Estate, Lead & Event Management Softwares - Healthcare Apps and Solutions - HR and Job Platforms - Delivery Platforms and Apps 🔹 Over 13 years in web-dev, I’ve known tons of how to and how not to. Please check out my Highlights, Priorities, and the topmost Completed Job’s card before going on searching. 🔹 My technical expertise include Ruby on Rails, Shopify along with excellent knowledge of Javascript frameworks of React.js & Angular, Vue, Node and CMS - webflow . Moreover, very comfortable with writing tests in RSpec & Cucumber and have done TDD (Test Driven Development)/BDD (Behaviour Driven Development) on several projects. With the help of my team, I also provide app development services using React Native. 🔹 My success parameter for any project is not just the completion but the project actually solving a business problem and generating revenue. I understand complete mechanics of SDLC (Software Development Life Cycle) and how to make products go viral. 🔹 Whether I collaborate with you as a freelancer or a team member, I assure you of four things: Perfect consultancy, value for money and time, punctual delivery, and complete client satisfaction of my clients. Just contact me, I will tell you what you want!
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Software Consultation
    Solution Architecture Consultation
    RSpec
    Back-End Development
    Twitter/X Bootstrap
    Shopify SEO
    Ruby
    Ruby on Rails
    AngularJS
    Vue.js
    HAML
    Front-End Development
    React
    JavaScript
  • US$35 hourly

    • 5.0/5
    • (5 jobs)
    I am a motivated, forward-thinking, and growth-focused professional with academic and project experience in developing cutting-edge business solutions. I am an experienced Ruby On Rails developer with 7 years of experience in functional and technical requirements, development, testing and documentation. I have also been working on Python for about 5+ years now and have a strong grip on faremworks such as - Django - Flask - Cherrypie - Bottle - Nginx - Dash Other expertise - Ruby on Rails - Amazon Web Services (AWS) - RESTful API (Amazon, eBay, etc) - Writing technical documentations (Swagger) - MySQL - PostgreSQL - TDD - Scraping - Stripe Frontend Technologies: - javascript , jquery - html Deployment: - Capistrano - Passenger - CircleCi
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Database Design
    Ruby
    HTML5
    Dash
    CSS 3
    NGINX
    Flask
    Django
    jQuery
    Ruby on Rails
    Python
    Data Scraping
    Relational Database
    eBay API
    Amazon MWS
  • US$35 hourly

    • 5.0/5
    • (12 jobs)
    With a proven track record of successful achievements, I am pleased to present my self as a Software Engineer. Having strong educational background featuring a degree in BS Software Engineering, I strongly believe I can make a significant contribution to Web Developers. My web developing expertise includes: Building and maintaining dynamic websites. Strong database knowledge specifically MySQL. JavaScript,jQuery CSS and (X) HTML,Ruby on Rails, C, Python,JAVA, Heroku ,AWS Ec2, S3 Storage, Scrapy ,Selenium , Beautiful Soap . I possess excellent communication skills and can liaise effectively with clients.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Twitter/X Bootstrap
    Heroku
    Amazon EC2
    Selenium
    Bootstrap
    Web Application
    Ruby
    JavaScript
    React
    Scrapy
    Ruby on Rails
    Python
  • US$30 hourly

    • 4.9/5
    • (8 jobs)
    My name is Kai. I'm a backend developer with 5 years with Ruby on Rails. My current position is the leader of the ruby team. I have experience with projects related to finance, CMS, productivity management, and more... I can also work with Javascript, Docker, AWS, Nodejs, Reactjs, Nextjs, Nestjs, Golang
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    API
    Web Development
    CSS 3
    HTML5
    Node.js
    JavaScript
    HTML
    Ruby on Rails
    Ruby
  • US$30 hourly

    • 5.0/5
    • (3 jobs)
    Sly is a team player and have an extensive experience on Software Development. He is eager to help start up companies / organization to launch and deploy their digital services or projects. His passion on developing web application is unconditional and willing to give his full effort to make the project usable and efficient. He loves writing code on Ruby language and integrate some great services to client projects.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Ruby on Rails
    Ruby
    RESTful API
    API
    Web Design
    Web Development
    CSS
    HTML5
    CSS 3
    jQuery
    Git
  • US$15 hourly

    • 4.6/5
    • (52 jobs)
    Enthusiastic Ruby on Rails developer experienced working with several successfully funded startups. I am a software developer with more than 6 years experience of commercial web and software development. Have full experience with building, maintaining, scaling web projects by using Ruby on Rails. It has been my privilege to work with big companies and startups. I have successfully developed robust web applications like in SaaS, E-commerce, Ads Managements, Education, Fitness, Recruitment etc. Backend Development: ----------------------------- - Ruby on Rails (Devise, CanCan, Paperclip, OmniAuth, Capistrano, etc.) - AWS, Heroku, Digital Ocean - Sharetribe Go, Shopify - Redis, Sidekiq, DelayedJob - MySQL, PostgreSQL, Firebase, MongoDB - REST API, APIs/OAuth Facebook, Twitter, Google, Instagram, Pinterest, Tumblr, etc. - Payment integrations: Stripe, PayPal, Braintree Good knowledge of Gems, Git, design patterns, refactoring
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    API
    Responsive Design
    RSpec
    MySQL Programming
    PostgreSQL Programming
    Heroku
    Agile Software Development
    Ruby on Rails
    MySQL
    Redis
    MongoDB
    Ruby
  • US$35 hourly

    • 5.0/5
    • (23 jobs)
    Hello, I'm Ratnakar, a committed and independent full-time Ruby on Rails Developer on Upwork (Top Rated Plus). I am currently seeking long-term collaborations with clients. My experience includes working full-time with multiple global companies through Upwork from 2014. As a dedicated and Senior Ruby on Rails developer, my expertise encompasses a broad range of web development areas. This includes proficiency in front-end JavaScript and back-end Ruby, along with the development of comprehensive web platforms and APIs for mobile applications & front end applications, all utilizing the latest technologies. With more than 8 years in software development, I have successfully delivered a wide range of projects across various industries, consistently achieving client satisfaction and project objectives. Here are some key strengths that characterize my work: ✦ Ruby on Rails: MVC architecture, RESTful APIs, ActiveRecord, testing frameworks (RSpec) ✦ Database: PostgreSQL, MySQL, MongoDB ✦ Javascript, Jquery, React ✦ Hotwire Turbo, Stimulus ✦ Deployment: Heroku, AWS, Digital Ocean ✦ Docker, Portainer ✦ Sidekiq, Redis ✦ Shopify apps & extension development, Liquid Templates ✦ Third-party and RestFul API integration ✦ HTML, CSS ✦ Github, Bitbucket ✦ Jira, Trello, Pivotal, Clickup ✦ Sharetribe Marketplace Please feel free to reach out to me, and I would be delighted to discuss your requirements in detail.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Heroku
    Sharetribe
    Elasticsearch
    GitHub
    Database Architecture
    Twilio API
    Redis
    Web Application
    JavaScript
    API Integration
    MySQL
    PostgreSQL
    React
    Ruby on Rails
    Ruby
  • US$50 hourly

    • 3.9/5
    • (12 jobs)
    I perform a myriad of freelance web work from my home in Minnesota. Which, is a place with fewer tech jobs than other states. So, I've had to resort to Craigslist to find jobs/gigs in New York, Miami, and Los Angeles. It has been a fun and rewarding challenge to acquire clients from these areas. I've worked with clients who simply needed Wordpress updates, start-up dreamers looking to make an entry, and quite a few well established companies looking to upgrade their systems. I look forward to meeting you, and your team. I love to materialize my skills at your benefit, and mine. I'm looking for new challenges to excite my future. Thank you for your time, Steven
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Database Administration
    Web Development
    Vue.js
    Ruby on Rails
    Flutter
    Ionic Framework
    NativeScript
    NGINX
    Marketing Strategy
    Computer Network
    LAN Administration
    Ruby
    JavaScript
    MongoDB
    WordPress
  • US$40 hourly

    • 5.0/5
    • (6 jobs)
    I have been developing commercial Ruby on Rails projects since 2017. I have started my career in graphic design and publishing where I have developed an eye for design and clean solutions. That experience helps me immensely in web development, to better understand what my customers are looking for. When writing code I adhere to two very basic rules: I always use git and I always write tests. This means that at the end of the day my projects run like clockwork. I always listen to my clients before making decisions and value their time by being upfront about my skills and competencies. I am a part of the Polcode team, a Polish software development company established in 2006 with over 150 developers, designers, project managers, DevOps and QA specialists onboard. This means that besides my programming skills you always have access to a full-stack product design & development team. My technical expertise: - Backend Ruby on Rails and API development - Frontend development with Rails, Vue.js, Hotwire, Stimulus - Database design and programming using PostgreSQL / MySQL - Server management and configuration: AWS, S3, DigitalOcean, Heroku - Server monitoring (Appsignal, DataDog) - Integration with popular APIs (Google, Amazon, Facebook, Twitter, Shopify, Stripe etc. ) - TDD / BDD - Unit and functional testing (RSpec, Minitest, Capybara, VCR) - web design and UX (Axure, Balsamiq, Zeplin, UXPin) My technology stack: - Backend: Ruby on Rails, MySQL, PostgreSQL, AWS, Heroku - Frontend: Javascript, jQuery, HTML, HAML, CSS, SASS, Bootstrap 3-5, Vue.js, Tailwind, Hotwire More about Polcode Polcode provides customized software solutions for startups, SaaS companies, eCommerce stores, and enterprise clients worldwide. From building the product from scratch to extending the existing teams, we have expertise in a diverse set of open source technologies and platforms to bring innovation in an agile fashion. Our team excels in PHP, Symfony, Laravel, Magento, Go, React Native, React.js, Vue.js, Ruby on Rails and Angular. With over 150 people, Polcode has either empowered client teams or delivered end-to-end development projects for brands from fintech, manufacturing, consulting, eCommerce, marketing or eLearning industries and is recognized as Top Developer in Poland by Clutch. Looking forward to our cooperation! Klaudia, Polcode Dev Team
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    HAML
    Ruby on Rails
    Ruby
    Bootstrap
    MySQL
    jQuery
    RSpec
    Vuex
    Vue.js
    Git
    Graphic Design
    UX & UI
    JavaScript
    HTML
    CSS
  • US$18 hourly

    • 4.7/5
    • (4 jobs)
    Hello, my name is Gurbuz. I'm a web developer with knowledge in Ruby on Rails, PostgreSQL, SASS, React, Redux, EmberJS and JavaScript. I'm open to full-stack, back-end and front-end development opportunities! - CSS, HTML, SASS, and JavaScript - React, Redux - EmberJS - Ruby on Rails, SQLite3, and PostgreSQL - RSpec and Capybara - Active Record, REST, and CRUD - Heroku - VSCode and its extensions - Linux (Ubuntu) - Git, GitHub, GitHub Flow, and Git Flow - Remote pair programming - Agile methodologies - Giving, receiving, and implementing feedback - Collaborating with culturally diverse people
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Redux
    Heroku
    Bootstrap
    Ruby on Rails
    CSS Grid
    Tailwind CSS
    React
    Ember.js
    HTML5
    JavaScript
    PostgreSQL
    Ruby
    CSS 3
  • US$100 hourly

    • 5.0/5
    • (42 jobs)
    Software Engineer | Full Stack Web Developer | Application Consultant I am a Senior Full-stack Web Developer, with over a decade of experience working with cutting-edge languages and programming techniques. I enjoy taking on challenging projects which require the use of the most advanced languages and development techniques. I am adept at innovative problem solving and developing high-quality code. I excel at web application development, including coordinating ground-up planning, programming, and implementation of the core modules. I am self-disciplined and able to work independently or as part of a cross-functional team. As an Upwork Freelancer, I have worked on a variety of projects for a wide range of clients, assisting them with their business needs by creating innovative and cutting-edge web applications. These include: • Developing several applications using Ruby on Rails and other software development tools • Collaborating with several organizations’ in-house software teams to create online applications and tools • Providing consulting services in addition to development services, assisting businesses to optimize the software applications and their online presence • Working on other Key Projects including AWS services, Heroku, Database (PostgreSQL) optimization, and Facebook API integration My Skills & Competencies Are: Ruby on Rails • PHP • GoLang • Project management • MySQL • PostgreSQL MongoDB • Docker • API Development • HTML • CSS • SDLC • Java Script jQuery • Agile Development • AWS • Payment Gateway Integration • Perl I have the following certifications CIW Web Development • CIW Web Design Specialist • CIW JavaScript Specialist CIW Database Design • CIW Perl Specialist • CIW Web Foundations CompTIA A+ • CompTIA Security+ • CompTIA Project+ • CompTIA Network+
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Ruby
    Web Development
    HTML
    PostgreSQL
    API Development
    Payment Gateway Integration
    Systems Development Life Cycle
    JavaScript
    Agile Software Development
    Ruby on Rails
    CSS
    Heroku
    Relational Database
    Amazon Web Services
  • US$70 hourly

    • 5.0/5
    • (5 jobs)
    Hello and welcome to "my world". ✅ About 11 years experience in web/mobile development ✅ Polite and responsible performer I am experienced developer with strong skills in building high load applications, REST APIs, SaaS applications, multi-tenant applications, background processing, deployment. I have about 11 years of wide-ranging experience in design and programming of web applications(also mobile and desktop apps), using different platforms, frameworks, technologies and storages. Using some tools for testing code and analyze it, such as RSpec, Rubocop, Reek. I'm good like both solo developer or a team player. I've created some projects from scratch, also have experience with supporting existing code base. Used different social API, using GIT. Prefer to communicate via email or Skype.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Elm
    RSpec
    Elasticsearch
    SQL
    Ruby on Rails
    React
    Ruby
    HTML5
    JavaScript
    React Native
  • US$50 hourly

    • 5.0/5
    • (4 jobs)
    FullStack Software Engineer with comprehensive knowledge in Web development and experience in building projects from scratch to success. Have strong expertise in Rails with 7+ years of active commercial practice. Skilled in maintaining applications with wide microservice infrastructure and making architecture solutions for small and big projects. Worked in TDD and BDD methodologies. Respectfully tested and well-documented code. Good communication skills and a capable team player.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Docker
    PostgreSQL
    Amazon EC2
    CI/CD
    MongoDB
    AngularJS
    Kubernetes
    Ruby
    API
    Ruby on Rails
  • US$50 hourly

    • 4.9/5
    • (33 jobs)
    I am a Ruby/RoR developer with about 10 years of experience. I'm an easy learning and passionate to bring your brilliant ideas into life. I am hard working and self-motivated person and have tremendous eagerness to learn new things! As a fast learner and good communicator I can join a team easily and provide you with interesting ideas. My skill set as follows: - Ruby, Ruby on Rails - MySQL/PostgreSQL/MongoDB/Redis - Background jobs/Resque/Sidekiq - BDD/TDD/Rspec/Cucumber - HTML/CSS/Haml/SCSS - JavaScript/CoffeeScript/jQuery/AJAX - Bootstrap, React - 3rd API Integration/oAuth (facebook, twitter etc.) - Restful, CRUD, DRY - Advanced Git/BitBucket user. Contact me and I will make your project work exactly the same as you wish!
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Ruby
    Bootstrap
    CSS
    Ember.js
    CoffeeScript
    MongoDB
    JavaScript
    HTML
    PostgreSQL
    Ruby on Rails
  • US$45 hourly

    • 5.0/5
    • (24 jobs)
    Primary expertise includes: — Ruby on Rails development — Frontend: VueJs — jQuery/Javascript, CoffeeScript — HAML, CSS3 — Git — Search Libraries: Elastic Search, Sphinx — DB: Postgres, MYSQL, MongoDB — API development: RESTful APIs — Testing: RSpec & Capybara and have done TDD (Test Driven Development)/BDD (Behaviour Driven Development) on several projects. — Cloud hosting: Comfortable handling server setups & deployments and have experience working with dedicated servers, Amazon EC2, Heroku. — Methodology: Agile & Scrum/Kanban methodologies and great communication skills. I would love to help you build a state of the art web application just as much as I would enjoy working on existing or legacy projects (developing new features, updating technologies, or bringing best practices and testing into unstable or poorly structured code). If you have a project where you feel I can help out, please don't hesitate to get in touch!
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    API
    DigitalOcean
    Amazon ECS
    PostgreSQL Programming
    Docker
    RESTful API
    Git
    Ruby
    MongoDB
    MySQL
    Ruby on Rails
    Vue.js
    JavaScript
    GraphQL
    jQuery
  • US$60 hourly

    • 5.0/5
    • (15 jobs)
    I am an accomplished Senior Full Stack Software Engineer with a proven track record of over a decade in the industry, specializing in JavaScript, Ember, Svelte, Ruby on Rails. Throughout my career, I have demonstrated exceptional skills in time management, analytical thinking, perseverance, and problem-solving, which have consistently contributed to successful project deliveries. My experience has honed my ability to thrive in collaborative team environments, where I actively contribute to achieving shared goals. I am committed to continuous learning and leveraging my expertise to deliver high-quality solutions. I am an enthusiast in migrating from clouds to VPS servers to reduce ownership costs. I am genuinely enthusiastic about exploring new opportunities to apply my skills and knowledge while furthering my professional growth within a dynamic team. If you believe my profile aligns with your company's needs, I welcome the opportunity to discuss how I can make a meaningful impact. Please feel free to contact me here, and I would be delighted to schedule an interview at your convenience.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Web Accessibility
    Svelte
    Front-End Development
    hapi
    API Development
    Vue.js
    Ruby on Rails
    Ruby
    JavaScript
    Ember.js
    HTML
  • US$25 hourly

    • 5.0/5
    • (7 jobs)
    Hi, I'm a Results-oriented Ruby on Rails and MERN developer with 5+ years of experience. I'm a strategic thinker who drives execution and am highly knowledgeable in a wide variety of professional disciplines that maximize the growth of the organization from product/project development using Ruby On Rails, MERN, and React to customer/end-user engagement. My profile and projects show my experience and my experience helps me immensely in web development because I know exactly what my customers are looking for. In my work, I follow a very simple yet effective code of conduct. I always listen to my clients before making decisions and value their time by being upfront about my skills and competencies. I am also fluent in English and open to both written and verbal communication. I keep code well structured, pixel perfect design and keep the client information about any scaling issues that may occur in the future. This means that at the end of the day my projects will be optimized for speed efficiency and security. SKILLS ⭐⭐⭐⭐⭐ I've worked with Ruby On Rails, Node.JS for backend development 5+ years of experience I've worked with React Native, React Js, Redux, Javascript, Jquery, CoffeeScript, Stimulus js, HTML5, CSS, Bootstrap, tailwind CSS for Frontend development I've worked with PostgreSQL, Mysql, MongoDB for the database caching and Queuing I've worked with Memcache, Redis, Sidekiq for the background jobs I've deployed applications on Linode server, Digital Ocean, Elastic Beanstalk, Heroku, Google Cloud servers, EC2. I've Integrated lots of 3rd party APIs like Google Map, Bitgo, Skyscanner, Google Finance, Linked in, Docusign, Youtube, Facebook, Twitter, and many more. I've deep knowledge to work with the latest technologies. I have integrated different payment gateways such as Stripe and 2checkout, Braintree, Authorized.net, GooglePay, Apple Pay, and many others. My aim is to help individuals, entrepreneurs, and companies to increase their internet presence by providing Simple and Efficient Solutions, Passionate Support, Precision Quality, and to build long-term trustful Business Relationships. I'M LOOKING FORWARD TO WORKING WITH YOU ON AMAZING PROJECTS!
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    MERN Stack
    Bubble.io
    Sequelize
    PostgreSQL
    Next.js
    Tailwind CSS
    Ruby on Rails
    Ruby
    TypeScript
    MongoDB
    MySQL
    Node.js
    React
    JavaScript
    WordPress
  • US$30 hourly

    • 4.9/5
    • (32 jobs)
    I am an Elixir/Golang/Python/Ruby programmer and Linux System Administrator. I had spent 22 years in the corporate world as a developer and linux administrator, working in the office. 8 years ago I jump to working remotely from home as a freelance developer. I have built apps for my customers ranging from locally in Nueva Esparta, and all over the world. I take pride in my work and the majority of my customers bring me repeat business and referrals. I feel I have been successful, not just because of my web programming skills, but because I am a reliable and dependable web programmer that can be trusted to follow through with my work. I enjoy working directly with my clients, rather than having project managers involved. Even though I seldom meet my clients in person (due to geography), I am able to effectively communicate via email and chat to complete the website development project to their specifications.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Phoenix Web Framework
    Phoenix
    Linux System Administration
    RESTful API
    API Development
    JavaScript
    Docker
    PostgreSQL
    Python
    Web Application
    Django
    Ruby on Rails
    Elixir
    Ruby
    Golang
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