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  • $45 hourly
    I'm a web developer with over 10 years of experience looking for interesting and unique projects to work on. Programming/Web: Ruby, Ruby on Rails, PHP, Laravel, HTML, CSS, Javascript, Git, PHP, Wordpress, Python, React, VueJs Databases: PostgreSQL, MySQL Software: Apache, Phusion Passenger Automated Testing: Unit Testing, Functional Testing using RSpec, Capybara Operating Systems: Linux, Windows, Mac OS Other: - Strong analytical and problem solving skills - Ability to deliver high quality code under tight deadlines
    Featured Skill Ruby on Rails
    Firebase
    Linux System Administration
    PostgreSQL Programming
    Test-Driven Development
    Vue.js
    Python
    MySQL
    JavaScript
    HTML
    CSS
    React
    Git
  • $40 hourly
    I am a full-stack developer with more than 5 years of web development experience. I have mostly worked with Ruby on Rails but am also good at JavaScript, Python and Golang. Apart from web development, I do Linux server administration, I develop mobile apps using Flutter and also program Arduino boards and PLCs.
    Featured Skill Ruby on Rails
    Python
    Flutter
    Arduino
    Linux System Administration
    Node.js
    Nuxt.js
    Vuetify
    Vue.js
    API Integration
    JavaScript
    ExpressJS
    Tailwind CSS
    API
  • $15 hourly
    English: Systems Engineer, freelance dedicated to the development of systems and websites using linux as operating system and ruby on rails as backend for more than 4 years. I have worked two years in a company dedicated to the design and programming of websites and 4 years as a freelancer with ruby on rails, bootstrap, javascript, html5 and css3. This is the last project I have developed based on ruby on rails: hotelfreelancers.com This is my workana profile so you can see my freelancer reputation and freelancer qualifications(it is a website similar to upwork): workana.com/freelancer/2d23f969f532749174e7a992338ac104 This is my github github.com/luis77 This is my behance profile(where I have screenshots of my completed projects): behance.net/luisluislu I have taken classes about: * PROGRAMMING: Ruby on rails 4, PHP, Visual Studio, with database managers such as PostgreSQL and MySQL. * LAYOUT: HTML5, CSS3, responsive web design, parallax effect. * Networking (voice and data transmission) * Repairing and maintenance of PCs and printers Español: Ingeniero de Sistemas, freelancer dedicado al desarrollo de sistemas ambientados en ambiente web usando linux como sistema operativo y ruby on rails como backend por más de 4 años. He trabajado dos años en una empresa dedicada al diseño y programación de sitios web y más de 4 años como freelancer con ruby on rails, bootstrap, javascript, html5 y css3. este es el último proyecto que he desarrollado basado en ruby on rails: hotelfreelancers.com Este es mi perfil de workana para que puedan ver mi reputación de freelancer y calificaciones por trabajos realizados (es un sitio web similar a upwork): workana.com/freelancer/2d23f969f532749174e7a992338ac104 Este es mi github github.com/luis77 Este es mi perfil de behance(donde tengo captura de mis proyectos terminados): behance.net/luisluislu he realizado cursos de: * PROGRAMACIÓN: Ruby on rails 4, php, visual studio, con gestores de bases de datos como POSTGRESQL y MYSQL. *MAQUETACIÓN: Html5, Css3, responsive web design, parallax effect. *Redes (transmisión de voz y datos) *Reparación y mantenimiento de pc's e impresoras.
    Featured Skill Ruby on Rails
    Ruby
    Bootstrap
    HTML
    CSS
    JavaScript
    CSS 3
    HTML5
  • $75 hourly
    6 years of Ruby on Rails fullstack (front-end, back-end and deployment) experience. 6 years deploying on the cloud (AWS, Azure, Digital Ocean, Heroku) 2 years Rust experience. Certified Kubernetes Administrator (CKA) Hashicorp Certified - Terraform Associate 003 I'm 100% committed to achieve success in your web applications with the results to prove it. Previous project work includes: ● Setting up 1-to-1 voice conferences using Twilio API ● Custom 2 factor authentication implementation ● Uploading and storing data on S3 and B2 buckets ● Automated web crawling to monitor new legislation ● Custom cron jobs on Linux servers for backup and maintenance tasks ● Solving "impossible" problems with custom Ruby gem and Rails patches ● Mass marketing sms campaigns using Twilio API ● Complex custom subscription implementation with Stripe API Technology I work with: ● Ruby on Rails (RoR). Rails 4, 5, 6, 7. ● Hotwire/Turbo ● RSpec/Capybara/Selenium for unit testing and feature testing ● PostgresDB, Mysql ● Heroku, Digital Ocean, AWS EC2 servers ● Heroku staging apps for continuous integration (CI/CD) ● Twilio API, Stripe API ● Google/Facebook/LinkedIn OAuth ● Capistrano, Docker+Kubernetes for deployment ● Wordpress, Shopify ● HTM5L/CSS3 ● JavaScript/AJAX/JQuery/JSON ● ReactJs/Nodejs/Typescript ● Web Scraping ● Linux BASH scripting ● Git, GitHub, Bitbucket, ● Webhooks ● Performance enhancement via algorithm and query optimization I understand the importance of test driven development to ensure a product that is understandable and maintainable for future developers to work on. More time put in up front means far less costs down the road. Fluent in English. Born and raised in the USA.
    Featured Skill Ruby on Rails
    AWS Development
    API
    Query Optimization
    DevOps
    Git
    Data Scraping
    PostgreSQL
    Web Development
    Rust
    JavaScript
    React
    Docker
    Kubernetes
    Ruby
  • $50 hourly
    Hello everyone! I am a Senior developer specializing in ruby. I am a talented and reliable contractor with more than 12 years of working experience. I was taking part in development of various of projects - from simple cleaning service website to high loaded big data traffic exchange system. If you need quick help and count upon a high quality result, then I am the person you are looking for.
    Featured Skill Ruby on Rails
    Sphinx
    JavaScript
    jQuery
    Redis
    Ruby
    MongoDB
    HTML5
    PostgreSQL
    Backbone.js
  • $35 hourly
    I am a full-stack Ruby on Rails developer with years of experience and a degree in computer science. I appreciate clean, beautiful codes & clear communication. I am experienced with building, maintaining, and scaling web projects using Ruby on Rails. I have done everything from the most basic CSS to setting up production servers. I have been exposed to different industries using various processes and technologies. I'm also a skilled and passionate Shopify developer with more than 4 years of experience in crafting exceptional and seamless e-commerce solutions. My journey into the world of web development started with a love for creativity and problem-solving, which eventually led me to specialize in Shopify development. SKILLS and KNOWLEDGE: # Web Development - Expertise in developing, profiling, and debugging with Rails and Ruby - Experience in designing REST-APIs and profiling Rails applications. - Engineering experience with building scalable MVC, event-based, modular, API-driven software. - Experience in CMS gems (Refinery, ComfortableMexicanSofa), - Strong knowledge of HTTP, REST, Redis, PostgreSQL, MySQL, MongoDB - In-depth knowledge and practice in TDD with Rspec, Cucumber. - Strong knowledge about popular gems such as Devise, Cancancan, Rolify, Paperclip, Trailblazer, etc... - Working knowledge of Capistrano, Mina, Git. - Front end HTML, JS, CSS ability. - Familiar with ReactJS, VueJS, Jquery, CoffeeScript, AngularJS, BackboneJS, ExtJS, Twitter Bootstrap, Foundation. - Experience in using/setting up continuous Integration tools such as Codeship, Jenkins, Tddium. - Working knowledge in Google API, Facebook API, Stripe API, Paypal API. - Web administration experience in Linux/Windows base servers. SSH, Cpanel, Amazon Web Service - Working experience in Agile environment. - Cloud experience​ in Amazon, Engie Yard, Digital Ocean. # Shopify skills: - Shopify Expertise: In-depth knowledge of Shopify's platform and features. - Custom Theme Development: Crafting captivating and unique online store designs. - Shopify App Development: build apps to add advanced features to stores. - Liquid Templating: Creating dynamic and personalized content for an engaging user experience. - App Integration: Seamlessly integrating third-party apps to extend functionality. - E-commerce Optimization: Enhancing store performance and conversion rates. - Responsive Design: Ensuring a flawless shopping experience across all devices. - API Proficiency: Leveraging APIs for seamless data exchange and functionality. - Problem-Solving: Analyzing challenges and providing innovative solutions.
    Featured Skill Ruby on Rails
    Twitter/X Bootstrap
    Test-Driven Development
    React
    Shopify
    PostgreSQL
    AngularJS
    MongoDB
    MySQL
  • $50 hourly
    100% 🚀 TOP RATED PLUS, 𝗧𝗢𝗣 𝟯% 𝗼𝗳 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝗲𝗿𝘀 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 I am a FULL-STACK web developer with many years of experience. Flexible, persistent, and committed team member is who i am. My skills set: - build shopify app 2.0 with graphQL api - Backend: Ruby on Rails, Node.js, Next.js MySQL, PostgreSQL, MongoDB, TDD, rSpec, API integration/design - FrontEnd: HotWire, Reactjs, Angularjs, Vue.js, Tailwindcss, Twitter bootstrap, Typescript, CSS, HTML. I am comfortable on advanced usage of GIT I enjoy helping my clients building well designed and profitable projects.
    Featured Skill Ruby on Rails
    Node.js
    Shopify Development
    Shopify
    Shopify Apps
    React
    Tailwind CSS
    RSpec
    Twitter/X Bootstrap
    PostgreSQL Programming
    MySQL Programming
    AngularJS
    MongoDB
    Git
    JavaScript
  • $15 hourly
    I have all my experience with Ruby On Rails and have hands-on experience with rails enterprise-level web application, application design, database design, performance-oriented systems with the best of my skills. I have two years of experience in building rails applications and APIs engines with the most used and efficient gems which are commonly required in many applications. Thank you for your time and consideration. I look forward to speaking with you about this opportunity.
    Featured Skill Ruby on Rails
    Ruby on Rails Stack
    UX & UI
    Tailwind CSS
    HTML
    React
    MySQL
    Web Development
    PostgreSQL
    Bootstrap
    jQuery
    Ruby
    JavaScript
    CSS
  • $30 hourly
    I’m a software developer with 5+ years of experience working for several kinds of industries. I currently work with Ruby on Rails Stack and related technologies building business web applications or products.
    Featured Skill Ruby on Rails
    Front-End Development
    Ubuntu
    Heroku
    Docker Compose
    RESTful API
    Ruby
    JavaScript
    PostgreSQL
    Docker
    MongoDB
  • $57 hourly
    Enthusiastic, talented Senior Software Engineer with excellent programming skills, strong problem-solving abilities, quality-driven and customer-focused. Passionate not only about technology but also about applying it to improve people’s lives in new and innovative ways. Experienced in handling the entire software development life cycle, and used to working with a wide variety of technologies. A constant learner who motivates their peers. Self-motivated, positive, proactive and pragmatic, communicative and collaborative, and ready to take responsibility and ownership. EXPERTISE • Strong experience with Python, Go, Java, C, C++ and Lua; • Good Knowledge of Ruby and Js; • Solid experience with object-oriented design, and design patterns; • Experienced with UNIX operating system, including Linux for development and basic administration; • Familiarity with databases such as PostgreSQL, Oracle, MySQL and PL/SQL; • Experienced with OpenGL, 3D graphics, and ima​ging; • Great Computer Vision and OpenCV experience; • Good experience working with GUI development such as QT, Swing, and IUP; • Familiar with Web development: J2EE, Spring MVC, Tomcat, JSP, Servlets, JSF, HTML, CSS; • Good Knowledge with Multi-threaded and Client- Server programming; • Strong experience in design, unit testing, reviews, system testing, and requirements; • Experienced with all phases of product development lifecycle; • Experienced with source control systems like CVS, Subversion, JIRA, Buildbot and Hudson; • Familiar with agile methodologies as well as software planning and estimation techniques; • Strong commitment to life-long learning, enjoying teaching and mentoring; • Team oriented, encouraging the use of conventional procedures, practices, and tools; • Excellent written and verbal communication skills (English and Portuguese).
    Featured Skill Ruby on Rails
    Web Development
    Web Application
    CSS
    HTML5
    AngularJS
    PHP
    JavaScript
    HTML
    Golang
    WordPress
    Machine Learning
    Computer Vision
    Data Scraping
    Java
  • $50 hourly
    I build great websites using HTML5, CSS3, JS, and other latest web technologies. I can help you create a landing page or implement a custom CMS or other web development, always keeping in mind what's best for your business.
    Featured Skill Ruby on Rails
    CSS
    Web Application
    AJAX
    Twitter/X Bootstrap
    HTML5
    CSS 3
    JavaScript
    Bootstrap
    jQuery
    MySQL
    PHP
  • $140 hourly
    ⭐⭐⭐⭐⭐ "Mark did an excellent job on a complex project. I was very impressed with the end result! He was very responsive throughout the process and always went above and beyond. Definitely recommend and will be hiring him again soon!" - Andrew Stukey, Integrate XML payments with Shopify. Greetings! I'm Mark, a seasoned software engineer with a passion for crafting high-performance SAAS applications using Ruby on Rails and its latest surrounding technologies. With over two decades of professional experience in the field, I bring a deep understanding of software architecture, development best practices, and the evolving landscape of web technologies. Skills: Ruby Ruby on rails PostgreSQL API JavaScript CSS HTML Tailwindcss RESTful API Web development Heroku Amazon Web Services Experience: As a software engineer, I have worked with both Start-ups & Marketing companies for over 20 years I have a wide understanding of the whole lifecycle of development with a focus on delivering user friendly solutions. As a CTO I have helped guide a development team in delivering solid solutions. Whether you're seeking a complete SAAS app build, technical consultation, or bug resolution, I'm eager to contribute my expertise to your project. Let's discuss your requirements and create software that drives success. Availability: I'm open to short-term and long-term contracts and project-based work. Contact: mark@therubylab.com
    Featured Skill Ruby on Rails
    Amazon S3
    API
    Shopify
    Amazon EC2
    Android App Development
    iOS Development
    AngularJS
    React
    Node.js
    React Native
  • $200 hourly
    Transforming your exciting ideas into perfect software. I take software architecture and design as art. Over 11 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. I’m looking for a new long-term job in a few months. If you have an exciting product or idea that I could help implement, let’s talk about it. My Highlights: - Wide expertise in eCommerce (from inventory to fulfilment), Billing systems (from payments to intelligence), GIS - Architected and led development of projects with total of 100M+ USD lifetime turnover and no money loss incidents - Hired and led a team of 4 talented Rails developers for 2 years - 10+ years of consistent commercial development on Rails and Javascript - Lead developer on 10+ Rails/JS projects lived up to production usage - Integrated Rails projects with total of 30+ programs and platforms you have used or heard of and 100+ you haven’t - Mastered 50+ RubyGems that you’d likely include in your Rails applications My Priorities: - Making greatest possible value for the project, not just getting paid - Taking the most out of collaboration with product owners and teammates - Learning new skills and tools to keep up with modern development practices - Delivering reasonably perfect code following best practices
    Featured Skill Ruby on Rails
    RabbitMQ
    PostGIS
    Software Architecture & Design
    Data Modeling
    API Development
    Vue.js
    SQL
    AngularJS
    Docker
  • $70 hourly
    An Object Oriented programming, Software Engineering and Design Patterns lover. Experienced in Ruby On Rails programming, maintenance and DevOps. My skills and experience include: -Git -Always testing my code with RSpec and Capybara. -Cloud platforms like AWS, Heroku, Digital Ocean and Rackspace. -Databases: PostgreSQL, MongoDB, Redis, Memcached and MySQL. -Popular gems or libraries: Sidekiq, Devise, Shopify, Chargify, OAuth and Google Captcha. -Transactional email providers: Sendgrid and Mandrill. -Connecting to external APIs, designing and developing APIs. -Basic front-end: HTML, CSS, JS and Boostrap. -Management and configuration of GNU/Linux servers. -Kubernetes -Scrum Experienced Python developer. Basic knowledge of popular Data science and Machine Learning like Scikit-learn, pandas, Keras, NLTK, Numpy, and PySpark. Native Spanish speaker.
    Featured Skill Ruby on Rails
    Python
    Golang
    Ruby
    Kubernetes
    MongoDB
  • $30 hourly
    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.
    Featured Skill Ruby on Rails
    Phoenix Web Framework
    Phoenix
    Linux System Administration
    RESTful API
    API Development
    JavaScript
    Docker
    PostgreSQL
    Python
    Web Application
    Django
    Elixir
    Ruby
    Golang
  • $25 hourly
    Welcome to my Upwork page! I'm a highly proficient RoR developer with over 7 years of commercial experience across a wide range of industries. I have a strong expertise in: - Ruby and Ruby on Rails - React.js and JavaScript - HTML5/CSS3, Bootstrap, Tailwind CSS, and Materialize - Hotwire and StimulusJS - Elasticsearch and Solr - Relational and NoSQL databases: MySQL, PostgreSQL, and MongoDB - I have extensive experience working with popular gems such as Devise, Active Admin, Kaminary, Carrierwave, Nokogiri, Redis, Resque, Pundit, and Whenever. Additionally, I'm skilled in testing frameworks including RSpec, Capybara, Factory_bot_rails, Selenium, and Database_cleaner. I excel in backend development, specializing in API development, adding new features, and creating innovative functionalities. However, I am also adept at frontend technologies such as HTML, HAML, Slim, CSS, JavaScript, jQuery, ReactJS, and VueJS. As a passionate and communicative developer, I am focused on delivering results. I am committed to effective collaboration, clear communication, and achieving project success. If you're in need of a dedicated developer who can bring your ideas to life, let's discuss your project!
    Featured Skill Ruby on Rails
    CSS 3
    Elasticsearch
    HTML5
    MongoDB
    JavaScript
    MySQL Programming
    Bootstrap
    GitHub
    PostgreSQL Programming
  • $22 hourly
    As a Full-stack developer, my focus on full stack development has been sharpened by working with a diverse array of clients and technologies, including Ruby on Rails, ASP.NET , React, Vue.js and GraphQL. My tenure has been marked by creating robust web applications and leading innovative projects that drive client satisfaction and operational efficiency. With over seven years of service and a recognized status as top-rated plus on Upwork, has honed my skills in delivering high-quality software solutions. Collaborating closely with teams, I've contributed to the development of applications that meet rigorous standards, leveraging my expertise to strengthen the technical foundations and foster success for our clients and organization.
    Featured Skill Ruby on Rails
    RSpec
    ASP.NET Core
    GraphQL
    PostgreSQL
    MySQL
    ASP.NET MVC
    TypeScript
    AngularJS
    jQuery
    Vue.js
    React
    JavaScript
    Ruby
  • $12 hourly
    ➢ Top Rated at Upwork ➢ 7+ Jobs completed at Upwork ➢ 6 Years Experience in ROR ➢ Honest towards my work ➢ 1k+ Hours worked at Upwork MY Skills: - Ruby On Rails. (Rails - Rails 2 , Rails 3 , Rails 4) - HTML5 , CSS3 , Photoshop design etc - TDD & BDD : Using Rspec , Fixtures , Factory_gril , Cucumber , Capybara etc. - Server deployment : Expertise in Capistrano , Web servers like Nginx & Apache , and app servers like Pssanger , unicorn , Thin etc. Thanks Namrata S.
    Featured Skill Ruby on Rails
    Salesforce Sales Cloud
    Salesforce
    Redux
    Redux Saga
    Vuex
    Vue.js
    Vuetify
    Ruby
    React
    Node.js
    MongoDB
    API
    JavaScript
  • $20 hourly
    I am a goal-oriented Ruby on Rails, Shopify, wordpress and React developer with over 5 years of experience, possessing a strategic mindset that fuels effective execution. My expertise spans a wide range of professional domains, driving organizational growth through adept product/project development using Ruby on Rails and associated technologies, including React. Additionally, I can develop shopify stores and wordpress websites from its creation to managing it throughout with custom development and it's complete management with proper digital marketing strategies. ★★ Ruby on Rails & React ★★ --Proficient in custom development using Ruby on Rails, React --Experienced in online tutoring --Skilled in front-end technologies such as HTML, CSS, JS, jQuery, Bootstrap, Tailwind CSS, and React --Well-versed in databases like PostgreSQL, MySQL, SQLite, and MongoDB --Familiar with version control software such as GitHub, GitLab, and Bitbucket --Knowledgeable in cloud platforms like AWS, Heroku, Digital Ocean, Azure, Render, etc. --Proficient in API integrations with platforms like Stripe, Google, Facebook, Twitter, etc. ★★ Shopify ★★ -- Shopify Designing and Development -- Development of Shopify Custom App -- Shopify Theme Customization -- Website Migration (From any Platform to Shopify & nopCommerce) -- Responsive(Mobile, Tablet, iOS, Android, Desktop) -- Integration of Payment Gateway in Shopify -- HTML{​​​​​​​​​​​​​​​​​​​​PSD/FIGMA to HTML Designing and Development/ CSS Styling}​​​​​​​​​​​​​​ -- Shipping, Integration of App, Checkout Page ★★ WordPress Development ★★ --Top WordPress Full Stack Developer -- Theme Customization -- Plugin Customization -- Custom-built Word Press Websites -- WordPress Customization -- WordPress Website Security -- Woo-commerce -- 3rd-party services & payment systems -- Liquid Programming -- API integration While my background includes extensive on-site industry experience, I have worked on a number of projects from scratch to existing development projects. I have been providing best of my services from a long period of time. Feel free to reach out today to discuss your project details and kick-start our collaboration.
    Featured Skill Ruby on Rails
    Ecommerce Website
    Shopify Website Design
    Shopify Templates
    WordPress Customization
    WordPress Development
    WordPress Theme
    RSpec
    Ruby on Rails Stack
    CSS
    JavaScript
    Web Development
    jQuery
    Bootstrap
    HTML
  • $70 hourly
    I am a full stack Ruby on Rails developer and also a team leader. Do you want to build an awesome application with a high-quality standard? you came to the right person. I have experiences with web application development from scratch to production. Do you want to build an MVP of your idea? Give me a week trial and I will help you to build it. Do you want for help to fix your existing application that failed to launch to a product or left by your previous developer? I am here to help you. Database experiences: - MySQL, PostgreSQL, Mongodb Deployment infrastructure experiences: - Heroku, Amazon Web Service (S3, EC2, Elastic Beanstalk, Lambda), Rackspace, Linode, Engineyard. Payment process experiences: - Stripe, Paypal But to be honest I don't have the shining badge as a web designer, but my standard is Twitter Bootstrap or Materialize, you can bring your own design or designer, or I will find it for you. Thank you for visiting my profile, just contact me even for just say hi or want to discuss your project or your idea. I hope it worth your time :-)
    Featured Skill Ruby on Rails
    jQuery
    GitHub
    Ruby
    PostgreSQL
    MongoDB
    Amazon Web Services
    MySQL
    Elixir
  • $25 hourly
    I am a Senior Full-Stack Developer with 7+ years of experience in Ruby on Rails, React.js, JavaScript, and AI technologies. My focus is on delivering solutions that help you save costs while driving ROI. I specialize in building scalable, efficient systems that maximize performance and minimize unnecessary expenses. Here’s what I bring to the table: Ruby/Ruby on Rails: Building high-performance back-end solutions. React.js, Redux, Typescript, GraphQL: Creating responsive and dynamic front-end applications. AI Integration: Implementing AI-driven features to enhance user experience and optimize operations. Databases: Expertise with PostgreSQL, MySQL, MongoDB, Redis, and more. API Integrations: Connecting with services like Facebook, Twitter, Amazon, and Google Maps. TDD/BDD: Ensuring reliable, high-quality code with RSpec, Capybara, and Cucumber. Version Control: Proficient in Git, SVN, GitHub, GitLab, and Bitbucket. I’m here to help you achieve significant returns by delivering smart, cost-effective solutions. Let’s discuss how I can optimize your project and help you succeed!
    Featured Skill Ruby on Rails
    Sharetribe
    React Native
    Spree
    Heroku
    GitHub
    API Development
    Backbone.js
    Shopify
    React
    JavaScript
    Ruby
    Amazon Web Services
  • $40 hourly
    Are you looking for a reliable and experienced software engineer to bring your project to life? With over 15 years of experience in full-stack development, CRM development, AI solutions, and cloud services, I am dedicated to delivering high-quality, scalable solutions tailored to your unique needs. My expertise spans across a multitude of technologies, including Next.js, React, Python Django, Node.js, and cutting-edge AI and payment integration technologies, ensuring that your project is in capable hands from start to finish. 𝐖𝐡𝐚𝐭 𝐈 𝐎𝐟𝐟𝐞𝐫: 1- Comprehensive Full-Stack Development: Proficient in Next.js, React, Node.js, Python Django, and the MERN stack, I deliver robust and scalable web and mobile applications tailored to your needs. 2- AI Development & Chatbots: Experienced AI Developer and AI Engineer, specializing in creating intelligent chatbots, AI-driven solutions, and leveraging Open AI and LLM Models for advanced natural language processing. 3- CRM Development: Expertise in building and enhancing CRM systems with a strong focus on user experience and functionality. 4- Mobile Development: Skilled in React Native for iOS and Android development, creating sleek and user-friendly mobile applications. 5- Backend & Scripting: Strong background as a Back-end Developer, proficient in scripting and ORM for efficient database management. 6- API Development & Integration: Expert in developing and integrating RESTful APIs, ensuring seamless communication between systems. 7- Payment Integrations: Specialized in integrating secure and efficient payment solutions, including Stripe and various mobile wallets and payment gateways. 8- DevOps & Automation: Proficient in Docker, Kubernetes, and CI/CD pipelines, ensuring smooth deployments and efficient automation of development workflows. 9- Data Analytics & Visualization: Experienced with SQL, Grafana, and Redshift for crafting insightful dashboards and optimizing query performance. 𝐍𝐨𝐭𝐚𝐛𝐥𝐞 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬: 1- CricWick: Delivered a high-performance sports analytics platform. 2- Knect: Developed a global payment solution. 3- Saudi Investment Bank: Spearheaded backend development and AWS deployment, enhancing security and scalability. 4- CNHI: Led the development of leasing solutions with a focus on payment integrations and Kafka for real-time processing. 𝐖𝐡𝐲 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞: 1- Enterprise-Level Expertise: Proven track record of working with top-tier clients like Saudi Investment Bank, CNHI, and Educative. 2- Leadership & Team Management: Demonstrated ability to lead teams, enforce coding standards, and ensure high-quality deliverables. 3- Client-Centric Approach: Committed to understanding client requirements and delivering solutions that exceed expectations. 4- Continuous Learning & Improvement: Passionate about staying updated with the latest technologies and best practices to provide cutting-edge solutions. 𝐀𝐯𝐚𝐢𝐥𝐚𝐛𝐢𝐥𝐢𝐭𝐲: Open to both short-term and long-term projects. Flexible with working hours to accommodate clients across different time zones. Let's connect and discuss how I can bring your vision to life with my expertise and dedication. 👁️‍🗨️𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀 #PythonDeveloper #Django #Flask #FastAPI #MachineLearning #NaturalLanguageProcessing #ArtificialIntelligence #ReactJS #WebDevelopment #BackendDevelopment #FrontendDevelopment #FullStack #RESTfulAPIs #DataScience #DeepLearning #FlaskRestful #DjangoRestFramework FlaskSQLAlchemy #DjangoORM #TensorFlow #PyTorch #ScikitLearn #Pandas #NumPy #NLTK #SpaCy #Gensim #TextClassification #SentimentAnalysis #NamedEntityRecognition #Chatbots #SpeechRecognition #ComputerVision #ReactJS #Redux #JSX #StateManagement #ComponentBasedArchitecture #ReactHooks #ResponsiveDesign #MaterialUI #GraphQL #JWTAuthentication #UserAuthentication #Authorization #Docker #CI_CD #AgileDevelopment
    Featured Skill Ruby on Rails
    Hybrid App Development
    Android App Development
    MEAN Stack
    React Native
    MERN Stack
    DevOps
    Full-Stack Development
    AWS Lambda
    AI Model Integration
    Kotlin
    Amazon Web Services
    AWS Amplify
    Node.js
    React
  • $30 hourly
    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.
    Featured Skill Ruby on Rails
    Ruby
    RESTful API
    API
    Web Design
    Web Development
    CSS
    HTML5
    CSS 3
    jQuery
    Git
  • $65 hourly
    10+ years of total experience in web development with Ruby-based frameworks. Solve business problems with the right tools, have experience and good expertise in both well tested and cutting edge technologies in software development. Expert in Ruby and its ecosystem. Apply the right architecture for projects and find better solutions for Ruby and Rails applications. Love SOLID, DD and OO-patterns. Skills: * Ruby, Rails, Sinatra, Hanami, Grape, background processing, caching * PostgreSQL, MySQL, MongoDB, RethinkDB, Elasticsearch, Redis * Frontend: HTML/CSS, Javascript/Coffescript, React * TDD, rspec, minitest, capybara, watir, cucumber, jest, mocha * Linux, Docker, CI & CD integrations Code review, GIT and Pull Request flow expert.
    Featured Skill Ruby on Rails
    Stripe
    Elasticsearch
    Docker
    PostgreSQL
    JavaScript
    MySQL
    MongoDB
    Ruby
    Redis
  • $70 hourly
    🚀 Senior Software Developer & Architect | 15+ years of experience | Scalable, High-Performance Solutions Hi, I’m Ivan Larionov, a senior software developer and architect with over a decade of experience designing and implementing complex, high-performing, and scalable software solutions. I specialize in backend and full-stack development, cloud infrastructure, and AI integrations. My passion lies in solving challenging problems and optimizing systems for speed, efficiency, and reliability. I’ve successfully built and led projects in translation automation, large-scale content management, SaaS platforms, and enterprise operations software. Whether it’s optimizing databases with 4B+ records, improving system performance, or developing cloud-native applications, I bring a results-driven approach to every project. 💡 Tech Stack & Expertise: ✔ Backend: Ruby on Rails, PHP (Laravel), Python (Django) ✔ Frontend: React, Angular, Vue, Hotwire, Next.js ✔ Cloud & DevOps: AWS (EC2, RDS, S3, Lambda, etc.), Docker, DigitalOcean, Heroku ✔ AI & ML: LLM integration (OpenAI, Anthropic), fine-tuning models, TensorFlow ✔ Mobile: Ionic, Cordova, Capacitor ✔ CI/CD & Testing: RSpec, Cypress, Selenium, Jenkins, GitLab CI ---- Recent Projects & Achievements 🔹 Private Translation Cloud – Designed architecture & core features for a system delivering better-than-human translations. 🔹 Advanced Translation Editor – Optimized database & background processing for 4B+ records, built a billing system still in use today. 🔹 Gutenberg Views Editor – Developed a visual editor allowing users to create dynamic website pages with lists, grids, and maps. 🔹 Enterprise SaaS for Pest Control – Built and maintained booking, CRM, mobile apps, and e-commerce portals for a UAE-based business. ---- Why Work With Me? ✅ Scalable, High-Performance Solutions – I optimize and future-proof software for efficiency. ✅ Cloud & DevOps Expertise – I design and deploy reliable, cloud-native infrastructure. ✅ AI & Machine Learning – Experience in integrating AI-driven solutions. ✅ Agile & Business-Oriented – I collaborate closely with stakeholders to deliver real business value. Let’s build something great together! 🚀
    Featured Skill Ruby on Rails
    Django
    Python
    TensorFlow
    AI App Development
    Tailwind UI
    Amazon DynamoDB
    Amazon RDS
    PostgreSQL Programming
    Laravel
    Ruby
    React
    Amazon Web Services
    PHP
    Ionic Framework
  • $125 hourly
    I am a full-stack web developer with a special interest in Ruby on Rails. Test-driven development is at the core of all advanced web applications that I create in order to allow scalability. I'm also experienced in JavaScript and its frameworks, including Angular, and React. I started out my journey by pursuing a degree in Computer Security and Forensics. Throughout my first year of that, I developed a passion for code. I was introduced to markup and the basics at a young age but during my first year of college is when I really started to code with more advanced programming languages. In a college environment, it's not easy focusing solely on programming due to the many unrelated subjects required for obtaining a degree. After realizing what I really wanted to focus on was web development, I decided to switch gears. One year into that degree, I took an alternate route and attended Bloc where I was able to dive deep into web development as a whole and really understand each and every concept. Not only did I learn the prevalent technologies and languages at a high level, but I also acquired the skills to continue learning on my own. I'm hardworking, self-driven, and I develop end-products that my clients are beyond happy with.
    Featured Skill Ruby on Rails
    Google Ads
    Recharge
    Shopify Plus
    Shopify
    Ecommerce Website Development
    Shopify Apps
    Ruby
    CSS
    JavaScript
    Vue.js
    HTML
    Bootstrap
    jQuery
  • $25 hourly
    Hi, I'm a Results-oriented MERN and Ruby on Rails Developer with 7+ years of experience, now expanding into AI and Prompt Engineering. Specializing in ✅ Node ✅ROR ✅JavaScript ✅TypeScript ✅ React ✅ Next.js ✅ TailwindCSS ✅ API Integrations ✅SASS/SCSS ✅ GraphQL ✅ Agile Development ✅ Cross-Browser Compatibility ✅ Git ✅ Bubble.io I'm a strategic thinker who drives execution and is highly knowledgeable in a wide variety of professional disciplines—from product development using MERN, Ruby on Rails and React to AI-powered solutions and prompt optimization. My profile and projects showcase my expertise, which helps me deliver exceptional web and AI-driven applications because I understand exactly what my clients need. In my work, I follow a simple yet effective code of conduct: ✅ Listen first—I prioritize client requirements before making decisions. ✅ Value transparency—I’m upfront about my skills to save time and set realistic expectations. ✅ Optimize for the future—I ensure clean, scalable code, pixel-perfect design, and proactive communication about potential scaling challenges. ✅ Leverage AI & automation—I integrate AI tools, LLMs (like OpenAI/GPT), and prompt engineering to enhance workflows, automate tasks, and improve user experiences. SKILLS ⭐⭐⭐⭐⭐ Backend & AI Development MERN and Ruby on Rails (7+ years) AI & Prompt Engineering (Fine-tuning LLMs, ChatGPT, Claude, Gemini, and custom AI workflows) API Integrations (Google Maps, Stripe, DocuSign, LinkedIn, Twillo etc.) Database & Caching: PostgreSQL, MySQL, MongoDB, Redis, Memcache Background Jobs: Sidekiq, ActiveJob Frontend Development React.js, Next.js, JavaScript, jQuery, Stimulus.js HTML5, CSS, Bootstrap, Tailwind CSS DevOps & Deployment AWS (EC2, Elastic Beanstalk), Google Cloud, Heroku, DigitalOcean, Linode AI & Automation Expertise Prompt Engineering: Crafting high-quality prompts for LLMs to improve accuracy and efficiency. AI Integrations: Building chatbots, automated content generators, and AI-enhanced workflows. Natural Language Processing (NLP): Customizing AI responses for better user interactions. Let’s collaborate on something amazing—whether it’s web development, AI, or a blend of both! I'M LOOKING FORWARD TO WORKING WITH YOU ON AMAZING PROJECTS!
    Featured Skill Ruby on Rails
    ExpressJS
    PostgreSQL Programming
    MERN Stack
    Bubble.io
    Sequelize
    PostgreSQL
    Next.js
    Tailwind CSS
    TypeScript
    MongoDB
    MySQL
    Node.js
    React
    JavaScript
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How to Hire Top Ruby on Rails Developers

How to hire Ruby on Rails developers

Looking to build a website? Got a need for development speed? A Ruby on Rails developer can help you rapidly prototype performant web applications built for scale. 

So how do you find a Ruby on Rails developer? What follows are some tips on how you can find top Ruby on Rails developers on Upwork. 

How to shortlist Ruby on Rails professionals

As you’re browsing available Ruby on Rails consultants, it can be helpful to develop a shortlist of the freelancers you may want to interview. You can screen profiles on criteria such as:

  • Technology fit. You want a Ruby on Rails developer who understands the technologies behind your website.
  • Developer workflow. Familiarity with the project management tools, version control systems, test suites, and other tools used by your development team is a plus. 
  • Feedback. Check reviews from past clients for glowing testimonials or red flags that can tell you what it’s like to work with a particular Ruby on Rails developer.

How to write an effective Ruby on Rails job post

Your project description should give the developer a basic idea of what’s being built, and then define the deliverables that you expect. For instance, do you want the developer to hand you the code and you’ll upload it to your production server? Or do you want the developer to deploy the code for you? You might also want a maintenance contract for future bugs and improvements. The developer needs to know the time that will need to be spent on the project to give you a good estimate.

Below is a sample of how a project description may look. Keep in mind that many people use the term “job description” but a full job description is only needed for employees. When engaging a freelancer as an independent contractor, you typically just need a statement of work, job post, or any other document that describes the work to be done.

Sample project description

Title: Ruby on Rails developer needed for new ecommerce site

Description: We need an experienced Rails developer to help us build a new ecommerce site. We need a fully developed web application with custom reports defined in the attached document.

The right developer will provide us with the full back-end and front-end code, and we will need you to deploy it to our production server. We will also need future improvements and enhancements with a maintenance contract after the website is fully developed and deployed. We’ve attached business requirements for your review.

The estimated duration of this project is three months. We need the completed app by XYZ date.

It’s likely that most developers will have questions and want to discuss the project further, but this gives every developer a basic idea of what you’re looking for. A good project description will help the developer give you a more accurate estimate and delivery date, so it’s one of the most important parts of finding the right developer and defining your project timeline.

RUBY ON RAILS DEVELOPERS FAQ

What is Ruby on Rails?

Ruby on Rails (commonly referred to simply as Rails) is an MVC (model-view-controller) framework that places programmer productivity front and center. An extensive library of “gems” allows a developer to quickly whip up a website with the latest best practices and standards.

Here’s a quick overview of the skills you should look for in Ruby on Rails consultants:

  • Ruby programming language
  • Web fundamentals such as HTML, CSS, and JavaScript
  • Front-end and back-end web development concepts
  • Familiarity with the Ruby on Rails test ecosystem (test-unit, RSpec, Minitest, etc.)
  • MVC programming paradigm

Ruby on Rails consultants help businesses quickly build, test, and deploy websites and applications. 

Why hire Ruby on Rails developers?

The trick to finding top Ruby on Rails developers is to identify your needs. Are you building a web app from scratch entirely with Rails? Or do you require experience with another framework such as React to serve as the front end to your Rails back end? The cost of your Rails development project will depend largely on your scope of work and the specific skills needed to bring your project to life. 

How much does it cost to hire a Ruby on Rails developer?

Rates can vary due to many factors, including expertise and experience, location, and market conditions.

  • An experienced Ruby on Rails developer may command higher fees but also work faster, have more-specialized areas of expertise, and deliver higher-quality work.
  • A contractor who is still in the process of building a client base may price their Ruby on Rails development services more competitively. 

Which one is right for you will depend on the specifics of your project.

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