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  • $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.
    vsuc_fltilesrefresh_TrophyIcon Ruby
    Redis
    PostgreSQL
    HTML5
    Sphinx
    MongoDB
    JavaScript
    Backbone.js
    jQuery
    Ruby on Rails
  • $100 hourly
    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 Ruby
    Web Development
    PostgreSQL
    HTML
    Heroku
    Systems Development Life Cycle
    Agile Software Development
    Payment Gateway Integration
    Amazon Web Services
    API Development
    Relational Database
    CSS
    JavaScript
    Ruby on Rails
  • $32 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 Ruby
    Unity
    Product Design
    3D Modeling
    Autodesk AutoCAD
    SketchUp
    Animation
    Illustration
  • $60 hourly
    Hello, I'm Umair, an expert-vetted Full-stack Engineer. With experience in different technologies and have worked on various projects
    vsuc_fltilesrefresh_TrophyIcon Ruby
    Web Development
    Software Development
    API Development
    JavaScript
    React
    Node.js
    Mobile App Development
    Python
    HTML5
    CSS 3
    AngularJS
    PostgreSQL
    React Native
    API Integration
  • $50 hourly
    Over 20 years of IT experience: development, implementation, and maintenance of Server and Client-side Web applications using Ruby and Python in UNIX environments. The primary programming language for today is Ruby. But besides that in the past, I was using Python. Sometimes do small projects or fixes with other languages like Swift, C++, Java, etc. Certainly frequently I use javascript cause I have to deal with frontend. Working as a freelancer since 2005 (part or full time), mostly I work on support of web projects (bug fixes, updates, various improvements, and new features implementation), so dealing with legacy code and code written by other developers is one of my strong points. Solving complicated issues with large applications is also what I often do for my clients. Besides that, I like developing projects from scratch and I have a good experience in *nix servers administration and scaling, so I usually take care of all related processes such as provisioning of the server environment and delivering an application to end-users. During the last 2 years, I was involved in cryptocurrency projects, so I’m quite familiar with their technologies and the last project I was working on is a cryptocurrency arbitrage monitor, it still in progress. Occasionally I like to try something new and I build various desktop applications as a hobby. I'm familiar with a lot of different programming languages and it's quite easy for me to start a new project with a new language.
    vsuc_fltilesrefresh_TrophyIcon Ruby
    Ansible
    Unix System Administration
    Unit Testing
    Automated Testing
    Integration Testing
    RSpec
    Continuous Integration
    SQL
    Ruby on Rails
  • $70 hourly
    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 Ruby
    Elm
    RSpec
    Elasticsearch
    SQL
    Ruby on Rails
    React
    HTML5
    JavaScript
    React Native
  • $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 Ruby
    JavaScript
    React
    Vue.js
    Ruby on Rails
    Python
    Business Intelligence
    MySQL
    CSS 3
    Twitter Bootstrap
  • $29 hourly
    I have more than 11 years of experience in RoR programming. Searching for interesting and challenging projects I can work on, to apply my skills and gain great experience. I'm a full-stack developer, which means that I'm strong both on backend and frontend. And I can help to bring your brilliant idea to the world!
    vsuc_fltilesrefresh_TrophyIcon Ruby
    HTML
    PostgreSQL
    AJAX
    jQuery
    MongoDB
    MySQL
    CSS 3
    CoffeeScript
    Redis
    HAML
    Ruby on Rails
    React
  • $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 Ruby
    Heroku
    CoffeeScript
    JavaScript
    Amazon Web Services
    Ruby on Rails
  • $30 hourly
    I'm a senior web developer with extensive experiences at building web (RubyonRails, Ruby) application with high quality for 8+ years. I'm a full stack developer. I can build attractive front end for user experience using HTML, CSS, Bootstrap and a secure and efficient backend to facilitate all the requests. I am familiar with JS and Single Page Applications. I have worked on 20+ big Projects throughout my career. I have worked with Postgresql, Mongo DB and MySQL. I have worked with Facebook and Google APIs as well. I have done a major work with - spree commerce. -management systems -education systems -Api developments -Marketplace -Classified ad systems -social media projects -Google Maps. -Google Location APIs. -Stripe, Paypal checkout APIs. -I have tried more than 100 of gems. -prelaunch theme -sharetribe and any other work in web development. I have all my demo work so will show you the demo first if you like then we start to work. Deployment on any server:- -digital ocean -bluehost -godday -heroku -Amzon -AWS and any other. I will work for 40 hours per week and will be glad to work closely with any freelancers who already worked with you. I will be very punctual, so will keep deadline and delivery good results. I am looking forward to hearing from you.
    vsuc_fltilesrefresh_TrophyIcon Ruby
    HTML5
    CSS
    PSD to HTML
    CSS 3
    MySQL Programming
    PostgreSQL Programming
    Bootstrap
    JavaScript
    jQuery
    HTML
    Ruby on Rails
  • $50 hourly
    - 10 years of experience with Ruby & Ruby on Rails; - 11 years of experience with JavaScript/TypeScript, including front-end frameworks like React; - SQL and no-SQL databases; - Machine Learning; - Can work with Kotlin (Android), Node, Python (Django, FastAPI, NumPy, SciPy, pandas). In general, ready to learn whatever the job requires; - Have been using Linux for 15 years; - My working hours are flexible - for a long-term project, I can adjust to your timezone, be it American or Australian; - No cultural barrier - I've been doing it for a while and know Anglo business etiquette; working in the distributed teams is not an issue.
    vsuc_fltilesrefresh_TrophyIcon Ruby
    Web Application
    Ruby on Rails
    jQuery
    Database Architecture
    Software Architecture & Design
    React
    RESTful API
    PostgreSQL
    JavaScript
    API
    Sass
    TypeScript
    Web Development
    SQL
    API Integration
  • $15 hourly
    Enthusiastic Ruby on Rails developer experienced working with several successfully funded startups. I 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 Ruby
    Responsive Design
    RSpec
    MySQL Programming
    PostgreSQL Programming
    Heroku
    Agile Software Development
    Ruby on Rails
    MySQL
    Redis
    MongoDB
  • $70 hourly
    I am a full-stack Ruby developer with extensive experience in a wide variety of business areas, including online advertising, healthcare, real estate, fintech, cloud automation, and more. I write clean, modular, well-documented code with security and scalability in mind and help create simple, friendly, accessible user interfaces. I also contribute to open-source software. My interests span a broad range of non-technical areas, most importantly classical music, travel and modern businesses. Technical skills: * Ruby/Ruby on Rails, Elixir/Phoenix * PostgreSQL, MongoDB, Redis, DynamoDB, RethinkDB * Ember.js, Elm, React, jQuery, SASS, Twitter Bootstrap * HTML5, CSS3, JavaScript (ES6) * TDD: RSpec, MiniTest * Heroku, AWS EC2, DigitalOcean, OpenShift * a perfect command of Git
    vsuc_fltilesrefresh_TrophyIcon Ruby
    PostgreSQL
    Phoenix
    Elixir
    Erlang
    Ruby on Rails
  • $50 hourly
    During the last couple of years I have developed wide range of projects for small and large companies. Main stack: Ruby on Rails, Python, Django, React.js, Angular, Vue.js, Twitter Bootstrap, HTML, CSS, My SQL, PostgreSQL, AWS, Linux. Looking for teams and long-term opportunities that appriciate high quality standards with quality and maintanable code.
    vsuc_fltilesrefresh_TrophyIcon Ruby
    RSpec
    API Development
    Git
    React
    JavaScript
    Sass
    Python
    AngularJS
    HTML
    AJAX
    Ruby on Rails
  • $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 Ruby
    RESTful API
    Amazon S3
    HTML
    CSS 3
    JavaScript
    AJAX
    CSS
    Amazon Web Services
    Ruby on Rails
    SQL
    Bootstrap
    PostgreSQL
    jQuery
    Tailwind CSS
    MySQL
  • $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 Ruby
    API Development
    Elasticsearch
    Vue.js
    Shopify
    Responsive Web Design
    API Development
    PostgreSQL
    MongoDB
    Ruby on Rails
  • $80 hourly
    As a Senior Software Developer, I offer my services as a freelance consultant in software development. My tasks encompass enhancing existing systems with new features, overhauling outdated structures, and initiating novel greenfield projects or MVPs. I usually engage in long-term contracts, typically 3-6 months, with an option to extend, and I'm also open to full-time commitments of 30-40 hours weekly. My expertise includes working with a range of tools and technologies such as MERN, Express, NestJS, Strapi, GraphQL, CQRS, Mongo, SQL, PostgreSQL, λ + Cloud Functions, all Firebase services, TypeScript, React, Redux, NextJS, MicroServices (GRPC), AWS, Docker, and Web 3.0. I prefer working on the frontend development of various features and functionalities that enhance the user experience and satisfaction. I use React, Redux, RxJS, JavaScript, CSS, Material UI, and other technologies to build scalable and responsive UI components. I also have experience in developing a localization library to support multiple languages and working on a micro-app architecture to support integration across multiple UI teams. I place a significant emphasis on producing high-quality, test-backed code. My broad range of skills and expertise makes me a reliable problem solver and a resourceful team member. Eager to delve into diverse areas like AI, machine learning, the Internet of Things, blockchain, and the Bitcoin Lightning Network, I'm always open to challenges. As a freelance contractor and consultant, I cherish the flexibility this role affords me, aligning with my lifestyle preference. Feel free to reach out to me.
    vsuc_fltilesrefresh_TrophyIcon Ruby
    NestJS
    Solidity
    WebRTC
    web3.js
    ExpressJS
    Next.js
    TypeScript
    Laravel
    Ruby on Rails
    React
    PHP
    Amazon Web Services
    ClojureScript
    Node.js
  • $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 Ruby
    WordPress
    Kayako
    Redmine
    Ruby on Rails
    OAuth
    API Development
    C
    JavaScript
    PHP
  • $50 hourly
    Verified by Upwork 100% job success rate over 5 years of programming experience. I build complex websites and applications, mainly with Ruby on Rails. Got an idea for a new application? 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 Ruby
    Amazon EC2
    Stripe
    App Development
    Website Prototyping
    Business with 1-9 Employees
    Ruby on Rails
    Web Application
    CSS
    PostgreSQL
    Web Development
  • $12 hourly
    I have around 4+ year hands-on experience and knowledge of application development and configuration in Ruby on Rails and salesforce lightning:apex,Visual Force, LWC, trigger automation ,batch,user,Salesforce admin, Rest and Soap API,Tooling ApI/Metadata,SOQL,SOSL,SAQL,Javascript,CSS,Salesforce Mobile,Standard Reporting,salesforce integrationetc.
    vsuc_fltilesrefresh_TrophyIcon Ruby
    Salesforce Marketing Cloud
    Salesforce App Development
    Salesforce CRM
    Salesforce Sales Cloud
    HTML
    Web Application
    jQuery
    JavaScript
    MySQL
    API
    PostgreSQL
    Ruby on Rails
    Salesforce Lightning
    Salesforce
  • $50 hourly
    I am a full stack developer specialized in Javascript development, more specifically React, Vue/Nuxt development. As a full time, independent freelancer, I can dedicate 40~60 hours per week. My main skills - React, Redux, - Vue, Vuex, Nuxt - Node, API, Headless CMS - PHP, Laravel, GraphQL - HTML, CSS Besides I can do PHP, Django and Wordpress, Shopify development, too. If you would pick me, I will deliver the perfect result on time. Please contact me to discuss about your project. Thanks.
    vsuc_fltilesrefresh_TrophyIcon Ruby
    MySQL
    PHP
    Ruby on Rails
    Custom PHP
    Three.js
    Laravel
    JavaScript
    Nuxt.js
    Shopify
    WordPress
    Firebase
    Node.js
    Vue.js
    React
  • $20 hourly
    8 Years Experience in IT industry in Developing Ruby on Rails application. Good knowledge of software engineering best practices and processes in delivering high quality applications. Strong analytical and problem-solving skills with good interpersonal and communication skills. Ability to come up with innovative solutions to technical problems.
    vsuc_fltilesrefresh_TrophyIcon Ruby
    Puppet
    Ruby on Rails Stack
    Linux System Administration
    Ruby on Rails
    jQuery
    JavaScript
    Docker
    Capistrano
    Test-Driven Development
    Git
    RSpec
    Ansible
    Linux
    Ubuntu
  • $100 hourly
    I am a professional Sr. Full-Stack Developer with over 8 years experience building highly scalable & complex applications. I have a strong focus on best practices, and test driven development (both front and back end). I enjoy working on challenging projects, and have experience in the following areas: — Ruby on Rails 4.x/5.x, Python (Django/FastAPI) — Testing: RSpec, Capybara, Cucumber, MiniTest, Teaspoon/Mocha — Front-end: Angular 4/5 and React.js — DevOps: Jenkins, Vagrant & Puppet — DB: MySQL / PostgreSQL / Redis / Mongo — Cloud hosting: DigitalOcean / AWS / Heroku — Methodology: Agile & Scrum/Kanban 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). If you have a project where you feel I can help out, please don't hesitate to get in touch!
    vsuc_fltilesrefresh_TrophyIcon Ruby
    Elasticsearch
    Amazon EC2
    API
    Golang
    MongoDB
    AngularJS
    Microservice
    React
    Django
    Python
    Ruby on Rails
  • $35 hourly
    Primary expertise includes Python, Ruby on Rails, React, jQuery/Javascript, CoffeeScript, HAML, CSS3, Git along with integrating Elastic Search, Sphinx, Apache Solr, MongoDB, RESTful and SOAP APIs. Also well versed with writing tests in RSpec & Cucumber and have done TDD (Test Driven Development)/BDD (Behaviour Driven Development) on several projects. Comfortable handling server setups & deployments and have experience working with Docker, Kubernetes, Dedicated servers, Amazon EC2, Heroku, Linode. Also familiar with implementing Machine Learning, Deep Learning, TensorFlow, Keras, PySpark & Data preprocessing using pandas and numpy.
    vsuc_fltilesrefresh_TrophyIcon Ruby
    Artificial Intelligence
    Data Science
    Machine Learning
    Elasticsearch
    GraphQL
    MySQL
    AngularJS
    MongoDB
    React
    Ruby on Rails
    Python
  • $30 hourly
    I'm a software engineer having around 4 years of professional experience. I began my career after completing my education in computer science and have since been passionate about it. My main expertise is Ruby, Ruby on Rails and Javascript. I started working on Rails 4.2 and working on the latest version of rails. My experience includes full life-cycle of development process: from gathering requirements to development and support. I follow the standard coding practices and give great importance to quality and maintainable code. - Received 'Beautiful Code Writer' award at my previous company 7vals. - Developer at Toptal - Top 3% Talent My Skills: - Ruby | Ruby on Rails | Javascript | Bootstrap | Tailwind | MySQL | PostgreSQL | RSpec | Sublime | StimulusJS - Javascript | Jest - Python | Django | Anaconda | PyCharm - Android Applications | Java | XML | Android Studio - Git | Heroku | Github | Bitbucket | GitFlow | Linode | Nginx - Project Management Tools: Redmine | Trello - Stripe - OOP
    vsuc_fltilesrefresh_TrophyIcon Ruby
    Jest
    RSpec
    Heroku
    Object-Oriented Programming
    GitHub
    Git
    Android
    Python
    jQuery
    Tailwind CSS
    Bootstrap
    PostgreSQL
    MySQL
    Ruby on Rails
  • $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 Ruby
    MongoDB
    MySQL Programming
    PostgreSQL Programming
    Amazon EC2
    Heroku
    Bootstrap
    Ruby on Rails
    JavaScript
  • $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 Ruby
    Web Development Consultation
    Innovation Strategy
    Mobile App Development Consultation
    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
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How to Hire Top Ruby Developers

How to hire Ruby developers

From websites and domain-specific languages (DSLs) to desktop applications and IoT devices, a Ruby developer has the back-end programming expertise to bring your software projects to life.

So how do you hire Ruby developers? What follows are some tips for finding top Ruby development consultants on Upwork.

How to shortlist Ruby development professionals

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

  • Technology fit. Whether it’s mruby for IoT or Ruby on Rails for web development, you want a Ruby developer who is familiar with the type of software you’re trying to build.
  • Test-driven development (TDD). The best way to avoid pitfalls on launch day is to test frequently during development and gain feedback from end users.
  • 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 developer.

How to write an effective Ruby development job post

With a clear picture of your ideal Ruby developer in mind, it’s time to write that job post. Although you don’t need a full job description as you would when hiring an employee, aim to provide enough detail for a contractor to know if they’re the right fit for the project.

Job post title

Create a simple title that describes exactly what you’re looking for. The idea is to target the keywords that your ideal candidate is likely to type into a job search bar to find your project. Here are some sample Ruby job post titles:

  • Back-end developer needed with Ruby on Rails experience
  • Full-stack Ruby on Rails developer needed.
  • Ruby programmer needed to build a domain-specific language (DSL)

Ruby project description

An effective Ruby job post should include:

  • Scope of work: From MVPs (minimum viable products) to full-featured SPAs (single-page applications), list all the deliverables you’ll need.
  • Project length: Your job post should indicate whether this is a smaller or larger project.
  • Background: If you prefer experience with certain industries, software, or developer tools, mention this here.
  • Budget: Set a budget and note your preference for hourly rates vs. fixed-price contracts.

Ruby developer job responsibilities

Here are some examples of Ruby developer job responsibilities:

  • Translate technical requirements and UI/UX designs into code
  • Integrate UI to a Ruby on Rails back end
  • Handle database design and business logic layer of an application
  • Build, test, deploy, and maintain a Ruby-powered application

Ruby developer requirements and qualifications

Be sure to include any requirements and qualifications you’re looking for in a Ruby developer. Here are some examples:

  • Ruby programming language
  • mruby for embedded systems such as IoT devices
  • Ruby on Rails for back-end web development
  • RESTful services, APIs, and third-party library integrations
  • Experience running unit tests
  • Version control systems such as GitHub

Ruby Developers FAQ

What is Ruby?

Ruby, along with its framework, Ruby on Rails (“Rails”), is an incredibly efficient, high-level back-end programming language—a big draw for start-ups and small development teams that need to get complex, heavy-traffic applications up and running in a short time. Rails lightens the workload for developers with a library of “gems”—prepackaged code that streamlines development in a big way.

But what really sets Ruby apart—especially when stacked up against its biggest competitor, Python–is “programmer happiness.” Ruby is attracting lots of developers who prefer its elegant “do more with less” philosophy—and these developers are in demand.

How much does it cost to hire a Ruby developer?

The first step to determining the cost to hire a Ruby developer will be to define your needs. Rates can vary due to many factors, including expertise and experience, location, and market conditions. Learn about the cost to hire Ruby developers.

Common Ruby developer mistakes

Overusing method_missing: Nobody likes repetitive code, and metaprogramming with method_missing is one of those guilty pleasure catchalls we like to throw into our code to avoid errors at runtime and just make it work.

Need to allow one class to quickly use the methods available in another class?

Use method_missing.

Have numerous methods but don’t want to name them all explicitly?

Use method_missing.

Need to build lots of methods that are virtually identical except for a few slight differences?

Use method_missing.

There’s just one problem with method_missing: It’s slow. Every time you call method_missing, the Ruby runtime must climb up your class chain hierarchy to find the method that actually does the heavy lifting that allows your code to work. Most benchmark tests show that method_missing is significantly slower at runtime than if you were to use plain old Ruby methods. A faster metaprogramming tool for the example cases above is define_method, which allows you to dynamically define methods that load when your classes are loaded.

So when should method_missing be used? When you’re dealing with dynamically named methods based on a pattern and you can’t reasonably expect to be able to predict all the possible method name combinations. Ruby’s own Active Record dynamic finders are probably the best example of this. For example, if you wanted to find a user by email from a large data set of users, and your user has an email attribute, you could use User.find_by_email(‘john.doe@example.com’) even though you never explicitly defined that method under the User or ActiveRecord::Base classes.

Relying too heavily on gems: Every new Rails developer reaches a certain point in their careers where they fall prey to the siren song of the RubyGems repository. And how can you resist? Ruby’s extensive catalog of gems is supported by a vibrant open-source community. Need help with authentication? Try Devise. What about authorization? CanCanCan’s got you covered. If there’s a task that you need help with, chances are good that there’s a gem for that.

Unfortunately, as with all other things in life, it’s possible to have too much of a good thing. As powerful as gems are, there comes a point where you’ll begin to notice a trade-off between programmer productivity and performance with every new gem. Too many gems can slow down performance, drain resources, and make tests take longer.

A bloated Gemfile can become a nesting ground for future application-breaking bugs. Higher-quality gems try to minimize dependencies as much as possible, but if you aren’t careful you could find yourself managing hundreds of gems. At that point, whatever productivity you gained from having to write less code is eaten up in managing dependencies, chasing hidden bugs, and keeping your application up-to-date.

What’s the solution? Moderation. Before you download a gem, ask yourself whether you can justify its use of resources and whether you need all the functionality that it has to offer. Being selective about your gems can help keep your application lean.

Application logic seeps into the view: Ruby on Rails follows the MVC (model-view-controller) pattern, where the model is responsible for data, the view is the visual representation of that data, and the controller forms the bridge between the two. The goal of this pattern is to decouple the major roles of an application in order to promote efficient code reuse and allow parallel development. Realizing that goal becomes difficult when you start to deviate from those roles.

Views should be concerned only with visual representation. However, it can be tempting to sneak application logic into your ERB templates like so:

<h2>
Congratulations
<% if winning_player %>
<%= winning_player.name %>
<% else %>
Contestant
<% end %>
</h2>

Not only can the inefficiency of placing application logic into individual views lead to repeating code, but managing a large jumble of Ruby and HTML code can make maintenance more difficult as your application scales. It is far better to encapsulate that logic into a reusable helper function, presenter, or decorator.

Taking “fat model skinny controller” too far: Controllers do a lot of things, from session handling to rendering and redirecting—but it basically boils down to a middleman between the model and the view, receiving requests and providing the appropriate output. By default, the controller already has a lot on its plate. To prevent the temptation of stuffing model or view logic in the controller, the “fat model skinny controller” principle was born. Problem solved, right?

Not really. Now the problem of bloat has just been moved to the model. Every model should correspond to a data table in the database. The model’s corresponding data table should be its single responsibility. In a bid to keep views and controllers lean, it can be tempting to toss anything that doesn’t quite fit into the MVC paradigm into the model. It turns out that many of the maintenance issues that plague bloated views and controllers also extend to the model. The solution is to use POROs (plain old Ruby objects) to encapsulate things that don’t quite fit in any of the MVC categories.

Leaving your code vulnerable to SQL injection: It’s one of the oldest tricks in the hacker playbook—SQL injection, which involves taking advantage of user input fields to gain direct access to a SQL database. In Rails, this vulnerability is found where user input is required (for instance, typing in a search field) to query data from a database. The traditional approach to handling a query for a username would look something like this:

user.find_by(name: params [:name])

This approach is vulnerable to SQL injection. Fortunately, in Rails we have Active Record dynamic attribute-based finders, which work as parameterized queries that can properly handle the passed argument, avoiding SQL injection.

user.find_by_name(name)

Besides using dynamic finders, it helps to only accept and construct values from external inputs such as search queries and forms. Never construct SQL commands like INSERT and DELETE, and don’t send untrusted inputs to methods in the Active Record library that accept raw SQL queries, table names, or columns.

Tips and best practices

Take advantage of the Ruby developer community

Ruby may not be the most popular back-end scripting language, but those who use it love it. Ruby was created with programmer happiness in mind, something that is readily apparent when you look at Ruby’s huge library of gems—ready-to-use solutions for common software development problems. If you need to rapidly prototype a project, you can virtually assemble an app from gems and boilerplate code in a snap.

Use symbols instead of strings in hashes

Ruby has a special data type called a symbol for storing the name of a variable that does not have to be changed. Symbols are prefixed with a colon denoted like so, :symbol. Unlike strings, which are mutable, symbols are immutable and take up only one spot in memory.

Immutability is perfect for hashes because you don’t want your hash keys to change. Hashes are similar to arrays, except they can use any object as an index.

shopping_list = { :cinnamon => 1, :butter=> 2, :soda => 6}

Symbols are also more space efficient than strings, as setting multiple variables equal to the same symbol will access the same spot in memory.

Test your code often

Test-driven development famously takes a test-first and code-later approach to software development that looks something like this:

  • Red: write a test for a software feature that fails
  • Green: write the minimum code needed to pass the test
  • Refactor: rewrite your passing code to best practices

Unless you already practice TDD, it may seem difficult to see regular software testing as anything more than a necessary evil to catch as many bugs as you can before you push to production.

Thankfully, Ruby tries to make TDD easier by giving you everything you need to practice it within its standard library: minitest/unit and test/unit. Between these two testing frameworks you should be able to get into the habit of writing safer code by regularly creating unit tests. Once you get comfortable writing unit tests, practicing TDD in its entirety isn’t so daunting.

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