Hire the best JRuby developers

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Clients rate JRuby developers
Rating is 4.7 out of 5.
4.7/5
based on 4,636 client reviews
  • $70 hourly
    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
  • $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.
    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
  • $25 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.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Front-End Development
    Ubuntu
    Heroku
    Docker Compose
    RESTful API
    Ruby
    JavaScript
    Ruby on Rails
    PostgreSQL
    Docker
    MongoDB
  • $40 hourly
    Hi, My name is Svetlana and I'm Google SketchUp Plugin Developer. I can help you with writing Sketchup plugins(extensions) on Ruby. With SketchUp plugins we can: - 3d-modelling of object - prepare export of models, PDFs, cad files for other programs, like Collada, AutoCad, etc - create and customise Dynamic components - customising Tool set I'm also have a lot experience with 3d/2d modelling in SketchUp. I love challenges, so anything innovative and creative is welcome, even if I have not done before, appreciate an opportunity to work for you.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Ruby
    Unity
    Product Design
    3D Modeling
    Autodesk AutoCAD
    SketchUp
    Animation
    Illustration
  • $60 hourly
    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
  • $25 hourly
    Hello, I am Faizan Yaseen, a Top Rated Plus Ruby on Rails developer with a strong track record in building scalable web applications. My expertise revolves around cutting-edge technologies to deliver robust solutions. With a dedicated focus on Ruby on Rails, I have 5+ years of experiece to the table, ensuring that projects are not only functional but also maintainable and future proof. Fields I have worked in: ✦ SaaS. ✦ Ad tech startups. ✦ Health tech apps. ✦ Blockchain applications. Here are my 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 ✦ Elastic Search ✦ Sidekiq, Redis ✦ Third-party and RestFul API integration ✦ HTML5, CSS3 ✦ Github, Bitbucket 𝐊𝐞𝐲 𝐀𝐜𝐡𝐢𝐞𝐯𝐞𝐦𝐞𝐧𝐭𝐬: - Successfully led the development of a 𝐇𝐞𝐚𝐥𝐭𝐡 & 𝐅𝐢𝐭𝐧𝐞𝐬𝐬 𝐖𝐞𝐛 𝐏𝐨𝐫𝐭𝐚𝐥 𝐮𝐬𝐢𝐧𝐠 𝐑𝐮𝐛𝐲 𝐎𝐧 𝐑𝐚𝐢𝐥𝐬, resulting in positive client feedback and project success. - Implemented performance optimization techniques, resulting in significant improvements in application speed and responsiveness. 𝐋𝐞𝐭'𝐬 𝐜𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐞 𝐚𝐧𝐝 𝐭𝐮𝐫𝐧 𝐲𝐨𝐮𝐫 𝐯𝐢𝐬𝐢𝐨𝐧 𝐢𝐧𝐭𝐨 𝐚 𝐫𝐞𝐚𝐥𝐢𝐭𝐲! #RubyOnRailsDeveloper #WebDevelopment #BackendEngineering #JavaScriptIntegration #APIDevelopment #DatabaseManagement #RubyWizard #TechInnovation #WebDevExpert #ScalableApplications #DigitalTransformation #SeniorRoRDeveloper #FullStackDevelopment #WebsiteSpeed #UserExperience #Reliability #Scalability #Security #WebDevInnovation #TechLeadership #AgileDevelopment #RubyOnRailsMagic
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    App Development
    Shopify
    Heroku
    jQuery
    Web Application
    Ruby on Rails Stack
    PostgreSQL
    Ruby on Rails
    Amazon EC2
    Ruby
    JavaScript
  • $40 hourly
    Hey there! I’m Jib, your go-to expert for all things Ruby on Rails, with a solid 5-year track record of delivering exceptional web applications. Skills 🔥 Server Stack: 💡Languages: Ruby, Python, Typescript 💡Frameworks: Ruby on Rails 5/6/7, NodeJS 💡Storage: PostgreSQL, MySQL, NoSQL, Redis 💡Testing: TDD/BDD/DDD -- RSpec, Minitest, Capybara 💡Deployment: Heroku, AWS 🔥 Client Stack: 💡JS Frameworks: Vue, React, Angular & Stimulus 💡Languages: HTML5, SCSS, Javascript (ES13) 💡CSS Frameworks: Bootstrap, Foundation 💡Module Bundlers: Webpack 💡JS Libs: jQuery, CoffeeScript, etc 🔥Other: 💡Libraries: GraphQL, Spree, Shopify 💡Others: Git, Docker, Wordpress, Jenkins 💡OS: Linux (Debian, Arch), MacOS
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    API
    Object-Oriented Design
    API Development
    Agile Software Development
    Ruby on Rails
    GraphQL
    Ruby
    Vue.js
    Bootstrap
    TypeScript
    Ecommerce Website
  • $25 hourly
    I'm a Senior Ruby on Rails Developer with 5+ years of experience in building web applications for several start-ups companies. I have developed around 20 + websites from ground up. I am well versed in developing Front end, backend, API's and Web services. I simply follow AGILE and SCRUM as an App Development Strategy. My skills: √ ROR √ Ruby √ React √ Bootstrap √ JavaScript √ ReactJS √ BackboneJS √ D3.JS √ Angular 2 RC4 √ AngularJS 1.x √ jQuery √ HTML/CSS3 √ REST API √ Shopify √ Payment integrations: Stripe, PayPal, Braintree √ Integrations via API, JSON, OAUTH: Facebook, Twitter, Google APIs √ MongoDB √ Postgresql √ MySql √ AWS √ Heroku √ Gems √ Git √ design patterns √ refactoring Thanks,
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    JavaScript
    Bootstrap
    PostgreSQL Programming
    MySQL Programming
    Ruby
    Ruby on Rails
    Heroku
    MongoDB
    Amazon EC2
  • $175 hourly
    As a seasoned full-stack software engineer, I excel in understanding business needs, devising creative solutions to cutting-edge challenges, and applying lean-thinking principles in my work. My experience spans developing web and mobile applications, collaborating closely with diverse stakeholders, and thriving in early-stage startups and R&D "skunkworks" projects. With a solid software engineering background, my passion lies in embracing AI-human collaboration – where creativity, empathy, and intuition are valued just as much as technology. Leveraging my expertise in AI integration, full-stack development, product development, agile methodologies, and project management, I aim to be a valuable asset to forward-thinking companies looking to harness the power of AI in their products and internal workflows. Together, we can unlock the immense potential of humans and machines working harmoniously, driving innovation and success. If you envision a more interconnected, empathetic future where technology supplements (not supplants) the Human Experience, let's connect! I'm eager to discuss how I can contribute my skills, experience, and enthusiasm to the growth of your organization.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Web Development Consultation
    Innovation Strategy
    AI Model Integration
    Information Technology Strategy
    GPT-4
    Artificial Intelligence
    Business Strategy
    Full-Stack Development
    ChatGPT
    Lean Development
    Artificial Intelligence Ethics
    Business Consulting
    Agile Software Development
    Mobile App Development Consultation
  • $210 hourly
    I am: — CTO / Team Lead / Fullstack Developer (language/framework-agnostic, but I do prefer Ruby/React combination) — Fluent English speaker My skills: — Ruby (Ruby on Rails, any other framework) — Elixir (Phoenix) — Vue, React — Go, Rust — DB: MySQL / PostgreSQL / Redis / Mongo — Cloud hosting: AWS / Google Cloud / Heroku — API integration: Facebook, Twitter, Instagram, Braintree, Stripe and more I have 15k+ hours of work logged at Upwork and 14 years of web development experience, which I hope you'll find useful in your next project.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    NodeJS Framework
    JavaScript
    Rust
    Elixir
    Ruby
    Golang
    TypeScript
    Ruby on Rails
    React
    Vue.js
  • $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 :-)
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    jQuery
    GitHub
    Ruby
    PostgreSQL
    MongoDB
    Ruby on Rails
    Amazon Web Services
    MySQL
    Elixir
  • $80 hourly
    Software developer with 8 years of working experience. I've worked on dozens of web apps written in various platforms (including .NET, Python, Node.js), but last 5 years I'm focused on Rails. Looking forward to work on challenging projects - especially startups. My goal is to make structure and logic clean as arctic ice and get it working like atomic clock.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Shopify Apps
    JavaScript
    Ruby
    C#
    ASP.NET MVC
    Ruby on Rails
    SQL
  • $10 hourly
    ✅ Focused on Front End development, with a strong emphasis on React. ✅ Specializing in Back-End development, with a particular focus on leveraging Python Flask and Node.js 👨🏻 have 🎓 BSC in Computer Science. In 3+ years of work experience in web development 🏅 a deep proficiency in Front End technologies 🏅 Translate Figma designs into responsive web pages 🏅 craft visually engaging user interfaces 🏅 Creating APIs to enable communication between the frontend and backend. 🏅 upholding high coding principles 🏅 development of complex technical frameworks. 🏅 a proven track record of successfully completing projects 🏅 Implementing user authentication and authorization systems 🏅 maintaining stringent quality standards 🏅 Designing and managing databases to store and retrieve data 🏅 demonstrating my dedication to both collective and individual objectives 🏅 a track record of meeting deadlines 𝗜𝗠𝗣𝗥𝗘𝗦𝗦𝗜𝗩𝗘 𝗦𝗧𝗔𝗧𝗦 𝗢𝗡 𝗨𝗣𝗪𝗢𝗥𝗞: 15+ projects, 🏆 Top Rated 🏆 100% Job Sucess Score ⭐ Cheerful reviews by past clients In my experience in tech, I’ve developed extensive knowledge in: ✅ Front-End Development: HTML | CSS3 | JavaScript | React JS |Next JS | TypeScript | Redux| Tailwind CSS | Bootstrap | Material UI ✅ Back-end development: Python | Flask | Ruby | NodeJS | Ruby on Rails ✅ Tools & Methods: Git | GitHub | Jest | Respect | TDD | Chrome | Redux Dev Tools. ✅ Styling: CSS3 | SASS | Bootstrap| Tailwind CSS | Material UI ✅ Database: PostgreSQL | MySQL | SQLite ✅ Other languages: Algol | Pascal | Fortran | Cobol | JCL | Visual Basic | Lisp ✅ Professional: Remote Pair-Programming | Teamwork | Mentoring ✅ Hosting Service: Render | Netlify | Vercel | Railway | Heroku | AWS 𝗖𝗘𝗥𝗧𝗜𝗙𝗜𝗖𝗔𝗧𝗜𝗢𝗡𝗦: 🏅 HTML and CSS Certification from Microverse 🏅JavaScript Certification from Microverse 🏅 HTML, CSS, and JavaScript for Web Developers from Coursera 🏅 Front-End Web UI Frameworks and Tools: Bootstrap 4 from Coursera 🏅 React/Redux from Microverse 🏅 Front End web Development with React from Coursera 🏅 Ruby/Database from Microverse 🏅 Ruby on Rails from Microverse 🏅 Full Stack Web Developer from Microverse 🏅 programming for web Development (python) 🏅 15+ certificates in Web Development 𝗪𝗛𝗬 𝗧𝗢 𝗖𝗛𝗢𝗢𝗦𝗘 𝗠𝗘? 👤I possess a strong intrinsic drive, continuously aiming to surpass the expectations of my peers through consistently delivering high-caliber work. 👤 Being a fast learner, I adeptly acquire programming skills relevant to my tasks with efficiency. 👤 My combined expertise in both soft and technical aspects of this industry can offer your company significant advantages, optimizing both time and cost savings. 🔑 𝗞𝗘𝗬𝗪𝗢𝗥𝗗𝗦: React Developer, ReactJS Expert, Front End Developer, Python Flask Developer, Flask Developer, TypeScript Developer, JavaScript Developer, React Developer, Front End Specialist, React Specialist, Web Developer, User Interface (UI) Designer, JavaScript Developer, Front End Engineer, Front End Architect, Front End Programmer, Front End Designer, React Framework, Front End Technology, Web Application Developer, Single-Page Applications (SPA), Component-Based Development, State Management (Redux), Redux, Front End Frameworks, Responsive Web Design, Front End Optimization, HTML5, CSS3, JavaScript, React, Web Accessibility, Progressive Web Apps (PWAs), Mobile Responsiveness, Front End Tooling, Web Development Best Practices, Code Quality Standards, Front End Testing, Debugging, Git Version Control, Front End Performance Optimization, API Integration, Web Development Trends, User-Centered Design, Web Animation, Web Development Workflow, Front End Libraries, Front End Collaboration, Agile Development, Code Reviews, User Interface Design Patterns, React Component Lifecycle, JavaScript Frameworks, Web Page Speed, Responsive Design Principles. If you would like to connect and chat with me about my journey in tech, please feel free to reach out.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    API
    RESTful API
    React Bootstrap
    Material UI
    Redux
    Ruby
    Bootstrap
    CSS 3
    PostgreSQL
    Ruby on Rails
    Tailwind CSS
    HTML
    React
    JavaScript
    HTML5
  • $100 hourly
    ⭐⭐⭐⭐⭐ "He's independent, fast, reliable, and super competent. We really lucked out!" I'm a Top Rated Plus Ruby on Rails freelancer (best 3% talent on Upwork) with many 5-star reviews. I created the world's largest Influencer Search Engine 8 years ago (heepsy.com) and haven't stopped helping organizations to build their products ever since. My experience 🥋 ⚡️8+ years of web development with Ruby on Rails ⚡️Experience as team leader and project manager ⚡️Frontend - React, Hotwire and Stimulus ⚡️Databases - PostgreSQL, MySQL, MongoDB, Redis, Elasticsearch, Neo4j ⚡️DevOps - AWS, GCP, Docker, CircleCI, GitHub, Heroku, Kubernetes, Terraform, Selenium ⚡️Other - Shopify, New Relic, Datadog, Auth0, Stripe My values ✅ Be polite, respectful, and enjoyable to work with Underpromise, overdeliver Communicate often, communicate fast Don't rely on marketing; invest in quality Be efficient, think ahead Your success = My success I'd love to meet you and learn more about your project. Let's chat.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Unit Testing
    AWS Systems Manager
    A/B Testing
    AWS Lambda
    Ruby on Rails
    JavaScript
    Ruby
    MongoDB
    SQL
    React
  • $50 hourly
    I solve your technical problems for money. 13 years in Software Development. Business-awareness and holistic approach. I will not suggest you a technology just because it's cool. I will work with you to figure out what's best for your wallet, your business and your customers. Get in touch and we can discuss your project!
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Web Application
    Ruby on Rails
    jQuery
    Database Architecture
    Software Architecture & Design
    React
    RESTful API
    PostgreSQL
    API
    Sass
    TypeScript
    Ruby
    Web Development
    JavaScript
    SQL
    API Integration
  • $80 hourly
    Hi, my name is Daniel Sousa and I’m a Portuguese Full Stack Web Developer. I have 5 years of experience in web development using Ruby, Javascript, C# and Go. Ruby on Rails is where I have the most experience. Worked on projects ranging from public facing websites with e-commerce features to login walled backoffices for various corporate needs. Most of my work has been around the Real Estate industry either working for a major Portuguese company that has a Real Estate CRM and Listing Portal or building websites for clients. Some highlights from those projects are custom authentication systems, home brewed cms, payment systems integration, powerpoint dynamic generation and more. Make sure you take look at my projects below for more information. Give me a shell, preferably zsh, rails, git and vim and I'll be at home. If you are looking for a fast learner that easily adapts to any context look no further. I believe in quality above quantity without punishing development times. That is why I sharpen my developer tools constantly in order to provide you the best result in the shortest amount of time. Your satisfaction is my biggest concern and I'm willing to go the extra mile to help you reach your goals. Some of my skills: - Expertise in developing, profiling or debugging Ruby on Rails applications. - Strong knowledge of Minitest and RSpec. - Strong knowledge of HTTP, REST, PostgreSQL. - Strong knowledge about popular gems such as Devise, Pundit, Paperclip. - Working knowledge of Capistrano, Git. - Front end HTML, Javascript and CSS ability. - Familiar with Jquery, Bootstrap, Foundation. - Experience on configuring VPS's for Rails deployment.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    React Native
    Babel
    Compiler
    Python
    React
    Ruby on Rails
    Git
    Ruby
    JavaScript
    SQL
  • $40 hourly
    I have 7+ years of experience of software development and worked in Ruby on Rails for more than 5+ years and used both SQL and noSQL databases. I use jQuery and CSS frameworks like Twitter Bootstrap to create responsive and rich user experiences. I have also dabbled in Android and iOS (Objective-C) mobile development. I have also made iOS games in SpriteKit which have been published on the App Store.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    API Development
    Elasticsearch
    Shopify
    Ruby on Rails
    MongoDB
    PostgreSQL
    Vue.js
  • $20 hourly
    Dear Clients, I am a full-stack developer. My main expertise is Ruby on Rails, Flutter, JavaScript, React.js. I’ve been working for last 7+ years. Having that experience, I can both help you to build web-app from scratch or upgrade the existing one. Currently I specialize in JavaScript, Ruby on Rails-Heroku, Flutter and React.JS-Redux. In my practice, I always pay a lot of attention to the quality of code and project organization. If you appreciate the value of great website development, you’ll love working with me. Invite me to apply for your project now, and let's have a chat!
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Heroku
    Ruby
    PostgreSQL
    MySQL
    HTML
    Web Development
    CSS
    JavaScript
    Ruby on Rails
    SQL
    React
  • $35 hourly
    I am an independent software developer specializing With more than 6 years of experience developing web applications using Ruby on Rails, I believe that I have the skills and expertise necessary to make an immediate contribution. As a highly skilled full-stack developer with extensive knowledge in frontend technologies such as HTML5, CSS3, JavaScript/CoffeeScript, and jQuery; as well as backend technologies like MongoDB, MySQL, PostgreSQL, and SQLite; I am an experienced web developer with a proven track record of success. I have worked on numerous web-based projects, including developing web pages, creating user interfaces, and providing back-end data solutions. My experience with Ruby on Rails and Semantic UI makes me uniquely qualified for this job; I thoroughly understand the technology and have worked with both ends extensively. I have worked extensively with Amazon EC2, S3, and RDS services along with Heroku & DigitalOcean. My experience also includes working on API frameworks such as React js, Angular js & Vuejs and writing automated tests using tools like RSpec & TestUnit. Additionally, I am proficient at deploying applications using Capistrano/Vlad and managing background jobs via Sidekiq/Redis(Elastic search). I also possess strong skills in CSS/SCSS (Bootstrap), JS (Vanilla) ES6, etc., which allows me to develop robust user interfaces quickly and efficiently. Furthermore, my expertise lies in creating RESTful APIs for mobile app development from scratch utilizing TDD/BDD methodology, unit testing tools, and static analysis tools such as Rubocop or Flog, etc. Finally, my ability to work effectively within an Agile environment has been proven by many successful projects delivered on time throughout my career so far. My current role as a Senior Software Engineer has allowed me to develop complex web applications from scratch and maintain existing systems with confidence. My team recently launched a large-scale project that involved working closely with our clients and stakeholders to deliver their desired functionality within tight deadlines. As a result, I have gained extensive knowledge in all aspects of software development, including requirements gathering, design documentation creation, coding, testing, and debugging. Additionally, my work experience has enabled me to stay up-to-date on the latest technologies and trends in web application development. In addition to my technical skillset, I also possess strong communication abilities which enable me to collaborate effectively with other developers as well as non-technical personnel such as business stakeholders or project managers. My colleagues would describe me as an organized person who is passionate about delivering quality products while meeting customer expectations. I look forward to speaking with you further about a new opportunity. Please do not hesitate to contact me if you have any questions. Sincerely, Pankaj Kumar My expertise lies in- 💎 Ruby version 1.9 to 3.1.3 💎 Ruby on Rails version 3 to 7 💎 MongoDB, MySQL, PostgreSQL, SQLite, Oracle 🌩️ Amazon EC2, S3, RDS, CLOUD9, EBS, Heroku, and DigitalOcean services ⚡️ API Frameworks (React js, Angular js, Vuejs, etc.) 🧪 TDD/BDD and unit testing tools eg RSpec, TestUnit, Cucumber, etc 🚀 Capistrano/Vlad for Deployments 🌐 REST API backend development for Mobile Apps 🔍 static analysis tools such as Rubocop, RubyCritic, Flay, Flog 📦 Webpack, Yarn, Sidekiq/Redis(Elastic search) 🎨 Strong Front-end Skills: CSS/SCSS(Bootstrap, materialize or Foundation), JS (Vanilla, CoffeeScript, and ES6) 📆 Experience with Scrum and Agile methodologies 🐧 Unix/Linux, Nginx, Apache, Passenger, Unicorn, and other web servers
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Amazon S3
    RESTful API
    HTML
    CSS 3
    JavaScript
    AJAX
    CSS
    Amazon Web Services
    Ruby on Rails
    Ruby
    SQL
    Bootstrap
    PostgreSQL
    jQuery
    Tailwind CSS
    MySQL
  • $40 hourly
    I build complex websites and applications. 100% job success rate over 5 years of programming experience. Got an idea for a new app? Does your business need a specific tool that you can't find anywhere? Then, let's build it together. Skills: • Ruby / Ruby on Rails • SQL • API Integrations (SOAP, REST, GRAPHQL) • Custom API Development • RSpec • HTML • CSS, TailwindCSS/UI • JavaScript, React, Vuejs, StimulusJS • Linux Web Servers • Git • Electron • Python And many more. Please feel free to send me a message, and let's start building something together. -Luis.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Stripe
    App Development
    Website Prototyping
    Business with 1-9 Employees
    Amazon EC2
    Ruby on Rails
    Web Application
    Ruby
    CSS
    PostgreSQL
    Web Development
  • $36 hourly
    I came to Upwork (oDesk) in 2011 to develop in Ruby and for Redmine as a member of the Upwork team. Then, I joined Kayako, where I worked full time during next 6 years. I'm the author of 20+ open source plugins for Redmine and of 3 open source plugins for WordPress. Also, I wrote the book "Mastering Redmine", that was published by Packt Publishing in 2013 and 2016 (second edition). Recent years, I develop in PHP, Ruby and JavaScript. But, I also have a huge experience in Perl and C.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    OAuth
    Redmine
    C
    Kayako
    API Development
    Ruby on Rails
    JavaScript
    PHP
    Ruby
    WordPress
  • $75 hourly
    I am a senior Ruby on Rails developer. I've been working with Rails for 8 years. I also bring several years experience building data warehouses and ETL processes so I also bring that data storage/processing/retrieval performance optimization perspective when building web applications. I'm comfortable working on the front end. I can work with traditional monolith Rails projects, or build UIs using React or Vue. I also have some devops skills and can get you set up with cloud hosting via Heroku, DigitialOcean or AWS (ECS, EC2 auto-scaling groups) and can get your application running on docker for easy developer on-boarding or deployment.
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Twitter/X Bootstrap
    Business Intelligence
    MySQL
    Vue.js
    Python
    Ruby
    CSS 3
    Ruby on Rails
    JavaScript
    React
  • $20 hourly
    I love writing code, especially clean code. Discipline in writing clean, nice to read and reusable code is a rule of thumb that I always follow and keep it to myself. I helped the customer to fix his messed up crawler, which was written 4 years ago, and I don't just want to fix or make it run, I wrote the code and thought of these lines of code should be nice for years so we wouldn't see this pain anymore. Now I'm working as fullstack web developer, with 4 years of experiences. I always have the eager to learn new thing on my own, expand my skills and knowledge. Learning is one of the most thing that I love in this job. I can offer you 10 hours of work for free to build the trust, you can pay me later if you're sastified with my works Technologies I work with: Front End: ✅ React.js ✅ Redux (basic) ✅ HTML5, CSS and ES6 JavaScript ✅ CSS Preprocessors: SASS/SCSS ✅ Bootstrap/Tailwind Back End: ✅ Ruby on Rails Database: ✅ Postgresql Cloud Services: ✅ AWS ✅ Heroku The reasons to choose me: ✅ Trying to do my best because I want to get good feedback from clients. ✅ Deliver things on time and with correct requirements are important to me ✅ I always keep my clients updated about their projects through regular communication. ✅ I trust in long-term relationships.
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    Scrum
    GitHub
    Agile Software Development
    Tailwind CSS
    Ruby
    Ruby on Rails
    Web Application
    Bootstrap
    HTML
    PostgreSQL
    JavaScript
    React
    CSS 3
    CSS
  • $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.
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    Python
    Ruby on Rails
    Golang
    Ruby
    Kubernetes
    MongoDB
  • $20 hourly
    I am a professional web developer with over 8 years of experience. My current main framework for web development is Ruby on Rails. I started using this framework in 2013 and eventually fell in love with it. Rails has now become a part of my life. Using Ruby on Rails and other technologies, I can realize innovative ideas and turn them into products that add great value to users. I always look for new challenges and never stop improving myself in order to become an expert in the field of web development. My main areas of expertise: + Ruby on Rails + Ruby gems: Devise, Carrierwave, Paperclip, HAML, Capistrano, Resque, Sidekiq, Mongoid and more + TDD and Unit Testing with Cucumber, Rspec, Cabybara + Front-end technologies: AJAX, CSS3, HTML5, jQuery, ReactJS, React-Redux + Mobile-first responsive design: Bootstrap, Zurb Foundation + Relational and NoSQL databases: MySQL, PostgreSQL, MongoDB, Redis + Payment service integration: Paypal, Stripe, Checkout, Inpendium + Deployment platforms: Heroku, AWS, DigitalOcean, VPS + Amazon Web Services: CloudFront, Elastic Load Balancer, OpsWorks, ElasticCache, ElasticBeanstalk, etc + Social network and third-party integration: Google Maps, Google API, Facebook, Twitter + Multilingual web applications + Git workflow + Management tools: Trello, Pivotal Tracker, Redmine, JIRA.
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    Heroku
    API
    RSpec
    Amazon EC2
    jQuery
    AngularJS
    Ruby on Rails
    React
    Node.js
    SQL
    Amazon Web Services
    PostgreSQL
    Ruby
    ExpressJS
  • $60 hourly
    With over 6 years of experience in Web and Mobile development I can be the perfect solution for your project. I specialize in building websites for small and medium size businesses. My skills include: Ruby on Rails, Javascript, Ionic framework, HTML, CSS and Amazon Web Services. I pride myself in what I do and I like to build a rapport with every client in order to deliver the best solution for their needs
    vsuc_fltilesrefresh_TrophyIcon JRuby Developers
    Bootstrap
    HTML5
    GitHub
    Ruby on Rails
    Heroku
    CoffeeScript
    Ruby
    Amazon Web Services
    JavaScript
  • $22 hourly
    Top Rated Full Stack Developer Top Rated Shopify Developer Full-Stack Developer ⭐ 10+ Years Experience ⭐ 4850+ Upwork Hours I am a full-stack developer and Shopify developer with over 10+ years of experience in Node.js, React.js, Vue.js, PHP, Laravel, Flutter, Android and iOS Application Development. ✅ 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 ----------------------------------------------------- ✓ JavaScript, React.js, Angular.js, Node.js, Vue.js, Socket.IO, Redux, Redis, Firebase, Firestore, MongoDB, PostgreSQL, MySQL, PHP, Liquid, HTML5, CSS3, jQuery. ✓ Amazon Web Services (AWS), REST APIs ✓ Twilio, Trello, Jira, Git, Github, BitBucket, Scrum, Agile ✅ 𝐌𝐨𝐛𝐢𝐥𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 ----------------------------------------------------- ✓ Flutter Application, iOS Application, Android Application, Hybrid Application ✓ Version control tools: Git, GitHub, Bitbucket ✓ Google Maps API, Facebook API, Payment API ✅ 𝐒𝐡𝐨𝐩𝐢𝐟𝐲 𝐒𝐭𝐨𝐫𝐞/𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 ---------------------------------------------------------- ✓ Shopify Website Development ✓ Shopify Liquid Development ✓ Migrate your website to Shopify ✓ Customization Design & Redesign Shopify store ✓ Shopify Store Management ✓ Shopify Point Of Sales setup & inventory management ✓ Convert Figma / Adobe designs into Shopify. ✓ Build an international Shopify store with different languages, currencies & products/sections. ✓ Shopify Liquid Coding Development ✓ HTML /CSS/Javascript/ Jquery in Shopify ✓ Add Payment Gateways ✅ 𝐒𝐨𝐦𝐞 𝐨𝐟 𝐭𝐡𝐞 𝐢𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐈 𝐡𝐚𝐯𝐞 𝐰𝐨𝐫𝐤𝐞𝐝 𝐢𝐧 ----------------------------------------------------- ✓ Dating Application ✓ Communication Application ✓ Traveling Application ✓ Jewellery Application ✓ Fitness Application, Mental Health Application ✓ E-Commerce Application ✓ Real Estate Application ✓ Food delivery Application / Restaurant Application ✓ Education Application ✓ Trading Application /Fintech Application ⭐️⭐️⭐️⭐️⭐️ 𝐅𝐞𝐚𝐭𝐮𝐫𝐞𝐝 𝐑𝐞𝐯𝐢𝐞𝐰 ----------------------------------------------------- "He's driven, efficient, follows instructions well, very sharp, experienced and fast. He's exactly what we were looking for." - Darrell, Canada I assure you of high-quality work with timely delivery and standard services in a professional yet friendly manner. If you like my profile, then DM or connect/invite me. Let's connect, Rahul
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    SaaS
    Ecommerce
    API Development
    React
    Flutter
    MongoDB
    Android
    Laravel
    Python
    Vue.js
    AngularJS
    Node.js
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