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Clients rate RSpec specialists
Rating is 4.8 out of 5.
4.8/5
based on 107 client reviews
  2. Development & IT Talent
  3. Back-End Developers
  4. (Current) RSpec Specialists
  • $35 hourly

    • 4.8/5
    • (18 jobs)
    Ruby on Rails developer having experience of 8+ years. I have been developing web applications and API using Ruby On Rails, Amazon AWS, Redux, PostgreSQL, RSpec, jQuery, and background jobs, including sites for different companies. I love to write DRY, manageable, and readable code with Rails and like Test-Driven Development(using RSpec and Capybara), and enjoy deploying applications on cloud servers. I have extensive experience in building CMS websites and eCommerce stores on Shopify and Magento platforms. Besides web and API development, I am an expert at developing hybrid mobile apps that run on iOS and Android devices using React Native framework. I am familiar with building clean, efficient, well-documented, well-structured, high-quality code projects. Strong skills: * Ruby on Rails Node.js, PHP/Laravel/CodeIgniter, * JavaScript libraries (React.js, Vue.js) * MySQL, PostgreSQL, Cloud Firestore | Firebase * AWS, Azure, Heroku, DigitalOcean, Bluehost/GoDaddy/Cloudflare
    vsuc_fltilesrefresh_TrophyIcon RSpec
    RESTful API
    PostgreSQL
    Amazon Web Services
    PostgreSQL Programming
    MySQL
    CMS Development
    Stripe
    Software Architecture & Design
    HTML
    Back-End Development
    JavaScript
    Ruby on Rails
    Front-End Development
    API Integration
  • $35 hourly

    • 4.8/5
    • (29 jobs)
    Hello All, OLD profile : Work History 2,108 hours worked 20 jobs [Will show my previous profile while we discuss work ] If you’re looking for somebody that is able to handle the entire workflow necessary to create a fast, elegant, industry leading application, then I’d love to hear from you. For the last 7 years I have effectively planned, developed and deployed a wide range of very successful web applications for loads of happy clients. I’ve worked with lots of APIs, developed CRM for fulfillment delivery system and have created affiliate system for this. My current skill set includes: • Backend: Ruby, Ruby on Rails • Front-end: HTML, CSS, Scss, Twitter Bootstrap, Javascript, jQuery, Jekyll • Version control: Git, Github, Bitbucket • Database: MySQL,PostgreSQL, MongoDB, • Deployment: AWS, Heroku, VPS, Digital Ocean • Testing: Rspec • Others: Redis, Elasticsearch I look forward to working with you!
    vsuc_fltilesrefresh_TrophyIcon RSpec
    Heroku
    Amazon EC2
    PostgreSQL Programming
    PHP
    Web Development
    Git
    HTML5
    Ruby on Rails
    Web Design
    jQuery
    AJAX
    PostgreSQL
    WordPress
  • $50 hourly

    • 5.0/5
    • (24 jobs)
    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: - Backend: Ruby on Rails, nodejs, TDD, rSpec, API integration/design - FrontEnd: HotWire, Reactjs, Angularjs, Twitter bootstrap, Jquery, ES6, CSS3, HTML/HTML5. - MySQL, PostgreSQL, MongoDB I am comfortable on advanced usage of GIT I enjoy helping my clients building well designed and profitable projects.
    vsuc_fltilesrefresh_TrophyIcon RSpec
    Twitter Bootstrap
    Git
    CSS 3
    JavaScript
    MongoDB
    MySQL Programming
    PostgreSQL Programming
    AngularJS
    Ruby on Rails
  • $20 hourly

    • 4.0/5
    • (8 jobs)
    I'm a Ruby on Rails expert. My services include a full life-cycle of the development process: from technical requirements to final deployment and support. Areas of expertize: - Ruby / Ruby on Rails - JavaScript / CoffeeScript / jQuery / - HTML / HAML / SLIM / PUG/ ERB - CSS / SCSS / SASS / Bootstrap - Sketch / Adobe XD / InVision/ Zeplin - GitHub / Git flow - Heroku / AWS / DigitalOcean Domains I have worked on: ✔️ SaaS – platforms ✔️ Web-apps ✔️ CRM-systems ✔️ ERP-tools ✔️ ECommerce marketplaces ✔️ Analytical systems ✔️ Mobile apps ✔️ Web design I am very fluent in English communication, available 40 hrs a week nd looking for a long term opportunity. Looking forward to have a word with you.
    vsuc_fltilesrefresh_TrophyIcon RSpec
    PostgreSQL
    MongoDB
    Ember.js
    JavaScript
    DevOps
    Ruby on Rails
  • $45 hourly

    • 5.0/5
    • (18 jobs)
    I have been working as Full stack since 2009 and I experienced in the frontend, backend and servers maintaining (DevOps). You can find the projects I built in my portfolio. For the last couple of years, I prefer to use Angular for front end development. I also have Ember experience and the Ember concept is much better and closer to rails, but unfortunately, the low community is pretty annoying and sometimes it could take much time to solve unexpected issues. The Angular has a much powerful community and this is a great plus. For the Backend, I use Rails and the gem named Grape if I need to build the API. Someone likes to use RailsApi gem, but I don't like the versioning, Grape is much better at that point for me. Also, the grape request validations are really cool. It seems Grape is a bit quicker then RailsApi. The best quality project, could not be without a ​test, each part should be covered by tests, usually, I use RSpec and capybara. Also, I have experience in javascript testing with Jasmine, and Jasmine is pretty helpful, but sometimes it is really annoying to keep the template fixtures in the actual state, and that is pretty possible to update the view and the jasmine stay green, however, the logic is changed. Based on this the capybara scenario is much better for me. I prefer to build projects from scratch because it allows to fully feel the project and apply the architecture development knowledge.
    vsuc_fltilesrefresh_TrophyIcon RSpec
    jQuery
    AngularJS
    Ruby on Rails
    Ruby
  • $20 hourly

    • 5.0/5
    • (4 jobs)
    Hi there, Are you looking for a skilled developer who can help you build robust, scalable, and efficient web applications? Look no further! With over 5 years of experience working on Ruby on Rails, I am confident in my ability to develop applications from scratch or maintain existing live applications dealing with massive traffic. My expertise extends beyond Ruby on Rails, as I am also proficient in Python, ReactJS, AngularJS, Ionic Framework, NodeJS, docker, Git CI/CD and React Native. My skill set includes working with Elastic-Search for query optimization, writing and maintaining good quality code with reusable modules, designing business requirements to modules ensuring performance/quality, solid understanding of DB management systems like PostgreSQL, MySQL, SQLite, and ability to write complex queries and import-export massive data in bulk operations at DB level. Additionally, I am proficient in jQuery/JavaScript and its compatibility with different operating systems, familiarity with stimulus/CoffeeScript, solid understanding of MVC and Restful frameworks for app developments, and familiarity with React Native/React and integrating it with Rails Application. My expertise also includes a solid understanding of Websockets, APIs, and web-services, identifying quick, reliable solutions to complex problems, recursive/recurring functions, and good communication skills. I am open to discussions and creative ideas towards a complex problem and can provide flexible solutions to a complex task. Whether you need to build an application from scratch, fix bugs/errors in an existing application, improve code quality, optimize query performance at both SQL level or using Elastic Search, design and develop reusable, flexible modules, or build a flexible step-by-step solution to complex tasks/problems, I can help. Let's work together to build applications that meet your business needs and exceed your expectations. Contact me today to get started!
    vsuc_fltilesrefresh_TrophyIcon RSpec
    Salesforce App Development
    API Development
    Heroku
    API
    Database
    RESTful API
    Git
    Ruby
    PostgreSQL
    Amazon Web Services
    AngularJS
    GraphQL
    JavaScript
    Node.js
    React
  • $50 hourly

    • 4.9/5
    • (16 jobs)
    I am a strong RoR-developer at Burning Buttons with over 10 years of experience. I have developed a wide range of web applications using Ruby on Rails and Frontend technologies. I always pay close attention to the quality of my work, also I like to learn and use new technologies to improve my skills. My strongest features are reliability and efficiency. I understand the importance of meeting deadlines, and I communicate well. I find solutions to problems and always suggest improvements for the project overall wellbeing. If you want your project to be modern and best-looking, you know which company to chose! I make sure that you'll happy with the results you received from me.
    vsuc_fltilesrefresh_TrophyIcon RSpec
    AWS Lambda
    Linux System Administration
    CSS
    React
    Business with 1-9 Employees
    JavaScript
    Ruby
    PostgreSQL
    Amazon Web Services
    Business with 10-99 Employees
    HTML
    Docker
    Kubernetes
    Ruby on Rails
  • $25 hourly

    • 5.0/5
    • (28 jobs)
    I am a seasoned Senior Ruby On Rails developer with over seven years of experience, specializing in architecting enterprise-level online applications for industries such as healthcare, education, finance, and social services. My steadfast dedication to providing excellence is demonstrated by the fact that I routinely complete projects to the highest levels of performance and quality. My skills also include the incorporation of generative AI into Rails apps, enabling me to develop AI-powered chatbots for improved customer interactions and to tailor user experiences using AI algorithms. My ability to improve functionality and user happiness is demonstrated by my ability to effectively utilize cutting-edge technologies. I use the most recent improvements, having expertise in a range of Rails versions from 3 to 7, to coordinate in-the-moment user interactions.
    vsuc_fltilesrefresh_TrophyIcon RSpec
    React Native
    Foundation Firm Intelligence
    API Development
    Database Management
    Payment Gateway Integration
    Git
    Sass
    Bootstrap
    SCSS
    Vue.js
    Ruby on Rails
    Python
    React
    JavaScript
    Node.js
  • $22 hourly

    • 5.0/5
    • (30 jobs)
    ⭐ Verified Top Rated Plus Freelancer ⭐ 98% Job Success Rate ⭐Job With 100% Satisfaction. Hello! 👋 I am a dedicated and passionate software developer specializing in cutting-edge technologies. With 12+ years of expertise in Web Development, Design, Mobile Apps Development, Blockchain ,Ethereum, . NET Solidity, NFT mint , NFT Marketplace , Auctions , Defi Solana ,Rust, NFT, Angular JS, NodeJS, NextJS, ReactJS, React Native, Material Designing, Semantic UI, Micro-services, Docker, Jenkins, CI/CD, Unit Test cases framework, Hybrid Mobile Apps Development, Ionic Framework using Cordova, HTML5, CSS3, Twitter Bootstrap|4, Responsive Web Design, PSD/JPG to HTML, JavaScript, jQuery, PHP, Wordpress, GIT, AWS, Nginx, Digital Ocean, Space, Microsoft|Google|Outlook|Facebook|Twitter API's, SSL Implementation, Android Apps Deployment, iOS Apps Deployment, RoR, Linux, Red Hat, Ubuntu, CentOS etc. =========== ✅ TECHNICAL SKILLS 🚀 =========== ✔ MEAN Stack Development ✔ MERN Stack Development ✔ Hybrid Mobile Apps Development ✔ Ionic ✔React Native ✔ Typescript ✔. NET ✔ Angular ✔ReactJS (Including Tailwind ✔NodeJS ✔ NextJS ✔Serverless AWS Lambda Functions ✔Amazon cognito service ✔Micro services ✔Docker ✔Jenkins ✔Redis ✔Socket | Pusher | Cloud Watch ✔Material Designing | Bootstrap 4 ✔ Expert with GIT ✔AWS EC2 | S3 | Web Services | Deployment ✔Kubernetes ✔ Nginx ✔ Digital Ocean ✔Space ✔ SSL Implementation ✔ Play Store Deployment with latest guidelines ✔ App Store Deployment with latest guidelines ✔HTML5, HTML ✔CSS3, CSS, SCSS ✔PHP Core | 5 | 7 | CodeIgnitor | Wordpress ✔ JavaScript, jQuery, jQuery UI, AJAX. ✔PHP/MySQL ✔Responsive layout (Bootstrap 3|4, CSS3 Media Query). ✔ HTML Email / Newsletter / MailChimp template ✅ Effective communication and collaboration are integral parts of my work approach, as I believe in building strong relationships with clients and stakeholders. By understanding their vision and requirements, I am able to deliver innovative solutions that align with their goals. =========== ✅ DATABASES 🚀 =========== ✔MYSQL ✔MONGO DB✔POSTGRE SQL✔RETHINK DB ✔SQLITE✔FIREBASE✔DYNAMODB ======================== ✅ WHY CHOOSE ME 🚀 ======================== ⭐️ 100 % Quality. ⭐️ Timely Delivery. ⭐️ User-Centric ⭐️ Guaranteed satisfaction⭐️ Budget-Friendly Services ⭐️ 24x7 Support & Maintenance If you're looking for someone who can bring your ideas to life using the latest technologies, or if you need assistance with any aspect of web & mobile app development. look no further! I'm here to help you transform your vision into reality. 💡 Let's connect and discuss how we can collaborate to create innovative and groundbreaking applications together. 🌟
    vsuc_fltilesrefresh_TrophyIcon RSpec
    Ionic Framework
    PSD to HTML
    Angular 6
    GitHub
    Mobile App Development
    MEAN Stack Administration
    PHP
    Git
    Angular
    HTML
    Node.js
    MySQL
    AngularJS
  • $50 hourly

    • 5.0/5
    • (12 jobs)
    I'm a professional Ruby on Rails developer with more than 10 years experience. My core competency is mainly about the full stack development in Ruby on Rails. Some of the technologies I have experience in: ✔ Ruby / Ruby on Rails ✔ Building RESTFUL APIs ✔ MySql, SQLite, PostgreSQL ✔ AWS services(EC2, S3, RDS) ✔ Delayed Jobs (Sidekiq, Resque) ✔ Elastic Search ✔ Authentication and authorization with Devise and Pundit ✔ Facebook and other oAuth ✔ Stripe payments ✔ Testing: RSpec, Minitest, Capybara ✔ Version Management with Git ✔ Cloud hosting: DigitalOcean / AWS / Heroku ✔ Methodology: Agile & Scrum If you have any questions, please feel free to contact me via upwork
    vsuc_fltilesrefresh_TrophyIcon RSpec
    PostgreSQL Programming
    MySQL Programming
    API Development
    Amazon EC2
    Heroku
    Bootstrap
    NGINX
    Redis
    Ruby on Rails
    JavaScript
  • $50 hourly

    • 4.9/5
    • (17 jobs)
    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 RSpec
    Redis
    PostgreSQL
    HTML5
    Sphinx
    MongoDB
    JavaScript
    Backbone.js
    jQuery
    Ruby on Rails
    Ruby
  • $30 hourly

    • 4.9/5
    • (19 jobs)
    A Full-stack developer who likes to solve hard problems and develop high-quality software. I write code that is well designed, easy to understand, maintainable, and extendable in the future. Top Skills: ROR, Flutter, React Native 𝐈'𝐦 𝐩𝐫𝐨𝐟𝐢𝐜𝐢𝐞𝐧𝐭 𝐢𝐧: - Ruby on Rails (Rails v3- v7) - Rspec, Capybara, Minitest, Cucumber (TDD / BDD / TAD) - Flutter, Firebase, Swagger, React Native, Dart - ReactJS, Next.js, TypeScript, JQuery, Bootstrap, TailwindCSS, HTML, CSS, SCSS, XML - PostgreSQL, MySQL, SQLite, Relational DB, MongoDB, Redis - GraphQL, RESTful APIs, Kubernetes, AWS, Materialize - Heroku, Dokku, Digital Ocean 𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐦𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 𝐭𝐨𝐨𝐥𝐬: -JIRA, Trello, Asana, Slack. GitHub, and Agile methodology
    vsuc_fltilesrefresh_TrophyIcon RSpec
    Ruby on Rails Stack
    CI/CD
    Ruby on Rails
    Vue.js
    Next.js
    Web Development
    Tailwind CSS
    JavaScript
    TypeScript
    PostgreSQL
    Mobile UI Design
    Flutter
    Hybrid App Development
    React
  • $70 hourly

    • 5.0/5
    • (32 jobs)
    Ruby/Ruby on Rails (and other frameworks) developer with 7+ years of experience. Also, experience with Python and Java (Spring). Big experience with Javascript/NodeJS: Svelte, React, VueJS. Working with both SQL and NoSQL databases. I appreciate code quality, purity, maintainability and readability. Deliver good quality product covered with automated tests. Worked in teams 3-8 people as well as on individual projects. Interested mostly in part-time jobs. Cum laude Masters in Computer Science. *100% Job Success* I care about your budget.
    vsuc_fltilesrefresh_TrophyIcon RSpec
    ExpressJS
    React
    Python
    Node.js
    Agile Software Development
    JavaScript
    Git
    MongoDB
    PostgreSQL
    Ruby
    Ruby on Rails
  • $40 hourly

    • 4.7/5
    • (8 jobs)
    I am a seasoned Full-Stack QA Engineer with a passion for ensuring the quality and reliability of software across the entire development spectrum. With a solid background in both frontend and backend testing, I bring a unique perspective to the testing process, ensuring a comprehensive and robust approach to quality assurance. My Expertise: Full Stack Testing: Proficient in testing applications from end to end, ensuring seamless functionality across all layers of the technology stack. Test Automation: Skilled in using industry-standard tools such as Selenium, Appium, and Playwright to automate test cases, resulting in increased efficiency and accuracy. API Testing: Thoroughly validate the functionality and reliability of APIs to ensure smooth communication between different software components. Cross-Browser and Cross-Platform Testing: Ensure a consistent user experience by testing applications across various browsers and platforms. Agile Methodologies: Adapt easily to agile development environments, participating in daily stand-ups, sprint planning, and retrospectives to enhance collaboration and efficiency. Why Choose Me: Proven Track Record: Successfully implemented automated testing in previous roles, resulting in a significant reduction in release cycle time. Detail-Oriented: Possess a keen eye for detail, ensuring that even the smallest issues are identified and resolved before deployment. Problem-Solver: Thrive on challenges and actively seek innovative solutions to complex problems. Let's Work Together: I am enthusiastic about the opportunity to contribute my skills and expertise to your projects. Whether it's creating comprehensive test plans, identifying and resolving defects, or implementing automated testing frameworks, I am committed to ensuring the highest standards of quality for your software. Open to connect and discuss how I can add value to your team and help you deliver top-notch software solutions.
    vsuc_fltilesrefresh_TrophyIcon RSpec
    Test Automation
    Mobile QA
    Ruby on Rails
    Salesforce
    WebdriverIO
    Automation Framework
    Bitbucket
    Jira
    API Testing
    Postman
    Apache JMeter
    Performance Testing
    Manual Testing
    Selenium WebDriver
    Jenkins
  • $25 hourly

    • 5.0/5
    • (21 jobs)
    I am a seasoned Senior Ruby On Rails developer, specializing in crafting enterprise-level web applications across diverse domains, including medical, educational, financial, and social media and support sectors. My commitment to delivering excellence is evident in the successful deployment of projects that consistently meet high standards. I have integrated generative AI into Rails applications, implementing AI-driven chatbots for customer interactions and personalizing user experiences based on AI algorithms. This aptitude for harnessing cutting-edge technologies underscores my ability to augment functionality and user satisfaction. Proficient in Ruby On Rails, Hotwire, Turbo, React, and Angular. I leverage the latest features and advancements to create real-time user experiences. Through technologies such as turbo-stream, turbo-frame, and action cable, I develop seamless interactions that enhance user engagement.
    vsuc_fltilesrefresh_TrophyIcon RSpec
    API Development
    Stripe
    Automated Testing
    Heroku
    JavaScript
    CSS
    API Integration
    Amazon DynamoDB
    GraphQL
    MySQL
    MongoDB
    Git
    Ruby on Rails
    PostgreSQL
    Ruby
  • $30 hourly

    • 5.0/5
    • (15 jobs)
    I have 14 years of experience as a senior Ruby on Rails, React, and Vue Developer, specializing in web application development. I develop scalable, effective solutions that satisfy the needs of clients with a solid knowledge of Ruby on Rails and skills in React and Vue. Having 7 years of experience in AWS architecture and development. Excellent understanding of AWS security services like AWS Shield, AWS WAF, AWS Key Management Service, and AWS CloudTrail. Proficient in infrastructure as code using AWS CloudFormation \ Terraform. Strong experience with containerization technologies such as Docker and Kubernetes. AWS Solution Architect and AWS Certified Security Specialty. Having knowledge of programming and scripting languages such as Ruby and Node.js. Familiar with RESTful API integration. Strong analytical and problem-solving skills. Excellent communication skills, in writing, listening and speaking I have been a key player throughout my career in all phases of software development, from requirements gathering and architecture design to coding, testing, and deployment. I am well familiar with the MVC architecture, RESTful APIs, and the fundamentals of front-end programming. I place great value on producing excellent user experiences and high-quality code by taking a proactive approach to problem solutions. As a Senior Developer, I also take pleasure in coaching and advising more inexperienced team members, promoting development and teamwork. 1. Frontend Stack: React.js Vue.js HTML5/CSS3 JavaScript Redux Axios CSS frameworks 2. Backend Stack: Ruby on Rails Ruby PostgreSQL/MySQL RESTful APIs Active Record RSpec 3. Development Tools and Deployment: Git GitHub/GitLab/Bitbucket Heroku/AWS/GCP Webpack/Babel npm/Yarn If you have a concept for a web application or a startup, I can develop and manage the technical components. Let's connect to discuss new requirements.
    vsuc_fltilesrefresh_TrophyIcon RSpec
    Angular
    Twilio API
    New Relic
    React
    Stripe
    Node.js
    CircleCI
    GraphQL
    Ruby on Rails
    RESTful Architecture
    Swagger
    Mailgun
    SendGrid
    AWS Lambda
    Elasticsearch
  • $30 hourly

    • 5.0/5
    • (41 jobs)
    I'm web developer, my area's are PHP/Rails, I love to work with ruby. Interested in working new technologies like Server Side javascript (NodeJS), Redis (key value hash store). I love open source tools that's why I also program in Android.
    vsuc_fltilesrefresh_TrophyIcon RSpec
    Database Architecture
    API
    Heroku
    RESTful Architecture
    Docker
    React
    AJAX
    Ruby
    PostgreSQL
    Ruby on Rails
    jQuery
    MySQL
    MongoDB
    Node.js
    JavaScript
  • $45 hourly

    • 4.8/5
    • (72 jobs)
    Hello, I'm software developer my main stack is Ruby, Javascript and DevOps. Have worked for various startups and projects in health-care, fintech, e-commerce. Helps build few startups from beginning. 📖 Devops: Docker, Docker Compose Docker Swarm, Kubernetes, Azure, Digitalocean, AWS, GCP, Heroku, GitHub Actions, Gitlab CI, Buidlkite. 💎 Ruby: Ruby on Rails, Grape, Sinatra, Turbo, Hotwire 🏎 Javascript Frameworks: React, Angular, VueJs, Stimulus, Coffescript, HTML5, CSS, Bootstrap, Bulma, ElementUI, MaterialUI, Stimulus 💾 SQL and noSQL databases - Mysql, PostgreSQL, MongoDB 👓 Additional languages and skills: Rust, R, C#, .NET, Rocket.rs When you work with me, you can expect: ✅ A fast and reliable developer who is passionate about delivering high-quality work ✅ A strong collaborator who communicates regularly and provides updates throughout the project ✅ A partner who is dedicated to helping your startup succeed and grow ✅ Clean, fast, maintainable and tested code Clients have recognised me as a top-rated plus freelancer on Upwork. Looking forward to speak more about your project!
    vsuc_fltilesrefresh_TrophyIcon RSpec
    Rust
    JavaScript
    Ruby
    Kubernetes
    Docker
    Vue.js
    Terraform
    Amazon ECS for Kubernetes
    GitHub
    Git
    CI/CD
    Heroku
    Google Cloud Platform
    DevOps
    Ruby on Rails
  • $55 hourly

    • 4.9/5
    • (63 jobs)
    Specializing in building crypto trading bots over the last years. Overall background: Strong development, lead, architect skills deriving by 20 years of experience in successfully implementing IT Software Projects varying in size and across different industries. Specialties: Python, Ruby on Rails, PostgreSQL, React JS, Java Cloud: AWS, DigitalOcean, Cloud66, HatchBox API: Shopify, Stripe, Algolia, Twilio, Mailgun, Chargebee, USPS, FedEx, ShipEngine API: Binance API, ByBit API
    vsuc_fltilesrefresh_TrophyIcon RSpec
    Cryptocurrency Trading
    Java
    Ruby on Rails
    Python
  • $30 hourly

    • 5.0/5
    • (7 jobs)
    Hi I am a Full-Stack Rails developer I have 3 years of experience in this field in which I work in different stacks like Rails 5 6, React, Node Js Graphql, Heroku, AWS, 3rd party API integration, Jquery, different payment methods, Aside from that I am a good team player I can collaborate with different people and able to make usefull impact.
    vsuc_fltilesrefresh_TrophyIcon RSpec
    Payment Gateway Integration
    RESTful API
    CSS 3
    Ruby
    API
    PostgreSQL
    HTML5
    GraphQL
    HTTP
    Git
    Node.js
    React
    Ruby on Rails
    JavaScript
  • $30 hourly

    • 4.8/5
    • (131 jobs)
    I am experienced web and mobile application developer for over 10 years with extensive experience in developing quality products. My experiences range from developing responsive, mobile sites that work well cross-browser to developing scalable for enterprise sites and mobile services industry. I am a self motivated person, eager learner and fast adapted. It's important to me to build long term relationships with clients, so I'm primarily looking for long term projects. I look forward to hearing from you!
    vsuc_fltilesrefresh_TrophyIcon RSpec
    RESTful API
    Elasticsearch
    Apache Kafka
    Redux
    Bootstrap
    Microservice
    Ruby on Rails
    GraphQL
    Next.js
    Node.js
    React
    Vue.js
    Git
    Gatsby.js
  • $35 hourly

    • 4.6/5
    • (157 jobs)
    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 RSpec
    Artificial Intelligence
    Data Science
    Machine Learning
    Elasticsearch
    GraphQL
    MySQL
    AngularJS
    MongoDB
    Ruby
    React
    Ruby on Rails
    Python
  • $40 hourly

    • 4.9/5
    • (103 jobs)
    • 100% Job Success Score • TOP RATED PLUS on Upwork • Trust Worthy & Highly Reliable history • 24,000+ Hours of work • 9+ Years of Development, Leading & AGILE Experience • Wide range of Expertise under the hood are the key elements that ensure trust, business effectiveness, and profitability for my clients. TECHNOLOGY STACK: - Ruby / Jruby / Ruby on Rails - Javascript / TypeScript - AngularJS / ReactJS - Elastic Search - REST APIs - Docker / Heroku / AWS - MQTT, IoT, Reporting / Distributed & Real Time Systems - REACT Native - Python & Django - ASP.NET (MVC) / C# - Postgresql / Mysql / NoSql (MongoDB) - Capistrano / Codeship / Chef - HTML / HAML / SLIM - CSS3 / SASC / SASS - Twitter Bootstrap / Tailwind / Materialize CSS Teamwork & Project Management: - Agile, Scrum, Kanban, XP experience - Github, Bitbucket, SVN, CVS - Jira, Basecamp, PivotalTracker, Trello, Redmine Social APIs and Payment Integration - Paypal, Stripe, Authorize.net - Facebook, Twitter, Instagram - OAuth - Google,LinkedIn, Github, StackOverflow Ecommerce: - Shopify (guru) - Solidus (guru) - WooCommerce (guru) Cloud & Servers Experience: - Amazon AWS EC2, S3 - Operating Systems: Linux, MacOS, Ubuntu, CentOS, - Digital Ocean Droplets - Heroku - Linode - Windows COMMUNICATION IS THE KEY: In addition to my technical strengths, I possess excellent communication skills. I prioritize keeping clients informed about ongoing developments, ensuring they are always aware of progress and can readily reach out for assistance when needed. Thanks for going through my profile. Please get in touch to say hello! Best, Haseeb
    vsuc_fltilesrefresh_TrophyIcon RSpec
    Twitter Bootstrap
    Shopify
    Amazon EC2
    JavaScript
    PHP
    Amazon S3
    ASP.NET MVC
    AngularJS
    Ruby on Rails
  • $25 hourly

    • 5.0/5
    • (24 jobs)
    Name: Hien Nguyen Sex: Male Nationality: Vietnamese Years of Experience: - 6+ years of experience in programming with Ruby on Rails, Rspec, sidekiq, redis, AWS - 10 years of experience in programming with C#, ASP .NET languages.
    vsuc_fltilesrefresh_TrophyIcon RSpec
    ERP Software
    Amazon EC2
    Heroku
    JavaScript
    PostgreSQL
    Ruby
    Microsoft SQL Server
    MySQL
    jQuery
    Ruby on Rails
  • $175 hourly

    • 5.0/5
    • (32 jobs)
    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 RSpec
    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
  • $25 hourly

    • 4.8/5
    • (172 jobs)
    Hi everyone! I am Full stack developer with over 9+ years of professional experience. I have started working on small and middle projects and the moved bigger projects like custom CRM. My strongest skills are: ✔️Node.js/Nestjs/Expressjs (8 years) ✔️PHP Laravel/Yii (6 years) ✔️Ruby on Rails (4 years) ✔️Javascript/Typescript/HTML/CSS (6 years) ✔️React, Redux /redux toolkit (6 years) ✔️Next.js, Hooks, Styled components / AntDesign/Material UI/GraphQL/Apollo ✔️React Native (6 years) ✔️Angular (6 years) ✔️Elixir (2 years) I am also highly proficient at ‣ Elasticsearch and similar ‣ Caching: Memcached, APC / OpCache ‣ Databases: SQL, MySQL, PostgreSQL, Redis, MongoDB ‣ Of course Git ‣ HTML/HTML5: Semantic web ‣ CSS/CSS3: LESS, SASS, Media Queries ‣ JavaScript, jQuery ‣ Compatibility quirks across browsers ‣ Responsive design ‣ AJAX, JSON, XML, WebSocket I am always self-improving and therefore I am always at​ the edge of technology. I do not just deliver the working code, I deliver clean, scalable, easy to support and state of the ​art solution. I am ready to help with fixes, support and upgrades in order to make the final project perfect. My English is fluent and I can be flexible regarding different timezones. I use various aims of communication in order to be as available as I can​ and always stay in touch with the client.
    vsuc_fltilesrefresh_TrophyIcon RSpec
    Firebase
    XML Web Services
    WordPress Plugin
    Yii
    Ruby on Rails
    JSON
    WordPress
    AngularJS
    PHP
    Laravel
    Node.js
    React
  • $35 hourly

    • 4.5/5
    • (20 jobs)
    I'm a professional full-stack developer with 5+ years experiences in developing web applications and RESTful API with NodeJS / Ruby on Rails. As a full-stack developer, I am not only an expert on the backend technologies but I'm also good at single-page frontend frameworks like React, Vue, etc. My main technology stack for developing web applications: - NodeJS with (but not limited to) MEAN, MERN stack, Koa - Ruby on Rails - MongoDB, MySQL, PostgreSQL - Sequelize (ORM for Relational DBMS) - EJS, HAML, SLIM (template engines) - Passport (authentication middleware, include social networks authentication) - JWT (token-based authentication for RESTful API) - AWS EC2, Elasticbeanstalk, RDS, Lambda, API Gateway, etc.
    vsuc_fltilesrefresh_TrophyIcon RSpec
    Vue.js
    React
    MongoDB
    GraphQL
    Sails.js
    Nuxt.js
    Next.js
    ExpressJS
    Node.js
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