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Check out Heroku specialists with the skills you need for your next job.
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Clients rate Heroku specialists
Rating is 4.8 out of 5.
4.8/5
based on 758 client reviews
  2. Development & IT Talent
  3. Full Stack Developers
  4. (Current) Heroku Specialists
  • $85 hourly

    • 4.9/5
    • (131 jobs)
    I'm mostly focused on efficiently making small web applications for personal, rapid prototyping, internal-use only, MVP or proof of concept purposes. Some of my past apps have been converting "spreadsheet apps" into web apps, and web apps that import/export spreadsheets. I build my apps with a strong emphasis on function over form, as I'm more of a backend developer. This means that the apps have a simple appearance, but they get done quickly enough. Some of the features I've implemented for my own and client's apps have been: - Play different sounds depending on response from server - Import data from Zoho Docs (via API) - Import data from Google Docs - Import data from an Excel file - File downloads (for the user or for data import to server) - Geo-caching via Ruby Geocoder gem and Geocod.io, find the nearest address in the database to a user - Background Job Scheduling. Useful for complex calculations or things that can wait, so the user doesn't have to. - Send emails via MailGun - Created a Ruby Gem - Data import automation via Zapier - Data searching/filtering/sorting via AJAX (no page reload) - Search, Sort and Paginate via Ransack and Kaminari gems - Automated testing and specs with Rspec and Capybara. Background: I learned Java and C++ while getting my associate's degree. I then learned Python through Udacity's online courses, and used that for a couple years while researching algorithms, data structures and the hard problems in computer science. In the last couple years, I've been putting my programming skills to work towards becoming a full stack web developer. While I'm familiar with front-end work (CSS/HTML/JavaScript) and use them often, my previous programming experience makes me stronger toward back-end work.
    vsuc_fltilesrefresh_TrophyIcon Heroku
    AppSheet
    Airtable
    SaaS Development
    Web Development Consultation
    Database Integration
    Web Development
    Database Development
    Microsoft Excel
    Google Sheets
    GitHub
    Zapier
    Git
    JavaScript
    CSS
    Ruby on Rails
  • $120 hourly

    • 5.0/5
    • (16 jobs)
    Full-stack developer with +22 years of experience, helping US clients full-time since 2005. Refactoring & code simplicity master. Mentor on Codementor. Sun Certified Java Developer, Sun Certified Web Component Developer, Zend Certified Engineer PHP5 Expertise: vanilla javascript, React.js, Vue.js, React Native, Ruby, Ruby on Rails, Python, Flask, Django, Odoo, C++ (generics, metaprogramming), C, Java, PHP, Scala, Obj-C, Core Data, TDD. Can rapidly prototype ideas and maintain complex legacy apps. Completed more than 100 projects since 2005. Featured in Washington Post in March 2013 Client Recommendations (LinkedIn & Upwork): "Marek has been our primary programmer for over 10 years. His work is superb. He has an amazing combination of skills and qualities that make him highly successful and effective. He is very smart and reads extensively to continue developing his skills. He is a hard worker and is willing to work long hours if needed to make deadlines. He is an excellent, organized communicator and is available every day, regardless of time zones. He is a renaissance coder, meaning he has a huge breadth of knowledge in many many languages and platforms. He has a keen business sense and will approach all coding with a great understanding of flexibility and scalability for future business needs. Most of all, Marek's code is clean and well-structured. This is critical if you expect your software to last through future revisions and iterations. He does not take shortcuts. He develops a solid foundation, adheres strictly to MVC structure, and produces code that is clean, professional, reliable, and extensible." "Marek and I worked together on a very large PostgreSQL-based database application. At first, I had the ideas and Marek had all of the execution. But as we worked more together, Marek was increasingly coming up with new ideas to do things better and faster than I had considered" "It's a pleasure to work with Marek. He has top programing skills and will deliver top quality job. He is very professional and customer oriented. He understand quickly and precisely the needs and will advise you or make propositions if necessary. He know the importance of deadlines and be on time and on budget. He is always available and can work under tight deadline if necessary. I strongly recommend him." "Mark is #1 on my list of coders. He is a tenacious in his ability to get things done and his solutions are excellent. He is also excellent at trouble shooting problems and super responsive. He communicates effectively and keeps me well informed. My only regret is not having enough work to employ him full time" "Marek worked with us in late 2009 to completely rewrite our website using a new platform (Ruby on Rails) according to specific requirements. He did a fantastic job of pulling everything together, was communicative throughout the entire contract, and was very willing to work with us after the job completion to ensure that we were entirely satisfied with his work. It was a pleasure working with him and I would eagerly do so again in the future." "I met Marek in my home town, Mountain View, California a few years back when he was visiting the US. Over the years, we have also developed a very cordial and fruitful professional relation. He is not only a highly competent software developer with vast expertise covering many areas of software technologies, but also a pleasure to do business with. His technical competence is beyond doubt, and his pleasant personality, intelligence, prompt responses and attention to his clients, and high quality work are what make working and doing business with him always an enjoyable experience. My startup's user facing Web project has won quite a few praises so far from many parties. Marek's contribution and participation in said project are definitely important. I enjoy knowing him both as a person and as a honorable fellow professional, and will recommend him to anyone seeking his consulting services without reservations" "Marek built major pieces of our enterprise transportation product. He's smart, motivated, deeply knowledgeable across the entire web stack, and a consummate professional about his work. Great decision-making skills with a strong sense of practical tradeoffs. Highly recommended as a developer, project lead, or entrepreneur." "Marek did great work for us on BetterPPC - he delivers on time and on budget."
    vsuc_fltilesrefresh_TrophyIcon Heroku
    Web Application
    MySQL Programming
    Ruby on Rails
    Golang
    Objective-C
    C++
    Java
    WordPress
    API
    Ruby
    PHP
    JavaScript
    Perl
  • $60 hourly

    • 5.0/5
    • (3 jobs)
    A Full-Stack Developer with several enterprise projects under my belt, with experience in all the tools needed to get your idea up and running. I like to work closely with my clients and encourage a lot of communication, as this is your dream, I'm just building it. I am experienced working with other developers, both as a team and as independents, although I can just as comfortably work alone and run your projects from start-up to sell-off. Poly lingual, feature focused, and highly communicative, I'm happy to talk about any project that'll offer a challenge. I have been working mostly in React and Node for the past year, specifically with the Sharetribe Flex Marketplace Platform, developing customized components and features, integrating them with the platform. My most recent projects include; -Multiple marketplaces developed with Sharetribe Flex - Fully customized marketplaces with video uploads, multiple currencies, custom transaction processes and more. -A multi-stop route optimization app utilizing the Google API and several home sprung algorithms to save businesses hundreds of hours of work in planning trips. Written in Ruby on Rails and Javascript, using PostGre SQL as a back end, I leverage data analytics to comb through customer data and provide -React.Js -Node.Js -Next and Gatsby -Ruby on Rails -Database Design and Administration -MySql, PostGres, MongoDB -GitHub, Heroku, Trello, Amazon, Digital Ocean, Linux -UI and UX Development
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    UX & UI
    API Integration
    API
    GraphQL
    PostgreSQL
    Sharetribe
    JavaScript
    Java
    Linux System Administration
    MySQL Programming
    PostgreSQL Programming
    Ruby on Rails
    React
    GitHub
  • $45 hourly

    • 5.0/5
    • (22 jobs)
    Primary expertise includes: — Ruby on Rails development — Frontend: VueJs — jQuery/Javascript, CoffeeScript — HAML, CSS3 — Git — Search Libraries: Elastic Search, Sphinx — DB: Postgres, MYSQL, MongoDB — API development: RESTful APIs — Testing: RSpec & Capybara and have done TDD (Test Driven Development)/BDD (Behaviour Driven Development) on several projects. — Cloud hosting: Comfortable handling server setups & deployments and have experience working with dedicated servers, Amazon EC2, Heroku. — Methodology: Agile & Scrum/Kanban methodologies and great communication skills. I would love to help you build a state of the art web application just as much as I would enjoy working on existing or legacy projects (developing new features, updating technologies, or bringing best practices and testing into unstable or poorly structured code). If you have a project where you feel I can help out, please don't hesitate to get in touch!
    vsuc_fltilesrefresh_TrophyIcon Heroku
    Docker
    API
    DigitalOcean
    Amazon ECS
    PostgreSQL Programming
    RESTful API
    Git
    Ruby
    MongoDB
    MySQL
    Ruby on Rails
    Vue.js
    JavaScript
    GraphQL
    jQuery
  • $90 hourly

    • 5.0/5
    • (51 jobs)
    I’m an accomplished JavaScript | PHP Web developer offering 9+ years of experience working with high industry businesses. I’m an expert eCommerce specialist that integrates technology, design, marketing, content, and strategy to create a roadmap to achieve a positive ROI for all my clients. I embrace hard tasks and creative challenges in order to drive results. My project process is data-driven and highly iterative, I cut through the clutter that burdens many organizations. My main skills are WordPress WooCommerce and Shopify, and with these frameworks, my goals are always simple. I focus on four, core key metrics: ✔ Enhancing User Experience ✔ Increasing Lead Acquisition ✔ Improving Conversion Rates ✔ Generating more Qualified Leads and Sales My mission is to deliver meaningful work that is focused on a business core goals for growth. I hit those goals within 3 main touchpoints: ✔ Marketing Strategy and Consultation ✔ Website Design and Development ✔ Implementing Digital Solutions For Positive ROI One thing I do pride myself in is the creation of highly appealing and feature-loaded websites for my clients. From every header to footer, all the information is organized perfectly with the implementation of stunning graphics. User experience is one of my top priorities.
    vsuc_fltilesrefresh_TrophyIcon Heroku
    jQuery
    Website Optimization
    React
    SCSS
    MongoDB
    Theme Customization
    API Integration
    Graphic Design
    WordPress
    WooCommerce
    Liquid
    PHP
    Shopify
    JavaScript
    Shopify Plus
    Tailwind CSS
  • $150 hourly

    • 4.9/5
    • (11 jobs)
    “Jason is a real pro! He's experienced and able to understand complex software well and add features quickly & thoughtfully“ As a Rails full-stack developer, I've worked with dozens of companies over the past 15 years, 4 times as CTO. I've written applications from the ground-up including design, front-end/ux, Rails backend and server administration via Heroku and AWS. I write clean, readable, scalable code and am agile and pragmatic in my approach to development. I've worked on all levels of existing code-bases and am able to get up to speed and contribute meaningful value quickly. The following is a quick summary of my skillset: -User Interface Design and development using: React Bootstrap HTML CSS -Expert Rails knowledge from versions 2.3 - 7+ -AWS including: -Elastic Beanstalk -EC2 -RDS -EMR -Lambda -Cloudwatch -S3 -Cloudfront -Route 53 -Distributed Team management Please let me know if you have any questions or would like to chat about your project Thanks!
    vsuc_fltilesrefresh_TrophyIcon Heroku
    AWS Lambda
    Amazon EC2
    PostgreSQL Programming
    Ruby on Rails
    CSS
    HAML
    CSS 3
    React
    JavaScript
    HTML5
    Sass
    Bootstrap
  • $20 hourly

    • 5.0/5
    • (19 jobs)
    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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    API
    RSpec
    Amazon EC2
    jQuery
    AngularJS
    Ruby on Rails
    React
    Node.js
    SQL
    Amazon Web Services
    PostgreSQL
    Ruby
    ExpressJS
  • $35 hourly

    • 4.6/5
    • (73 jobs)
    Expertise in Ruby on Rails & advanced JavaScript development Proficient in REST API creation and social media integrations Experience ReactJS frameworks Agile in fast-paced environments, focusing on delivery and quality Committed to building robust, user-centric web solutions
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    Apollo.io
    React Native
    Front-End Development
    React
    TypeScript
    Ruby on Rails
    jQuery
    GraphQL
    Web Application
    Python
    Node.js
    HTML5
    JavaScript
  • $50 hourly

    • 4.8/5
    • (71 jobs)
    With over 13 years of comprehensive experience as a full-stack web developer, I specialize in utilizing a range of technologies including Ruby on Rails, PHP, Python, and Node.js for backend development. Worked with notable clients including worldwide renowned organizations like: - Tesco - Morrisons - Mamas & Papas - Sofology - JD - jet2 - UNICEF - Standford University Proficient in modern JavaScript frameworks such as ReactJS and AngularJS, I also have expertise in CSS frameworks like Bootstrap and Tailwind. I have a proven track record of collaborating with startups, SMEs, and Enterprises, successfully delivering 26 startups to date. My skill set extends to Agile and Scrum methodologies, complemented by excellent communication abilities. Having spent more than 8 years working with AWS, I am well-versed in various services including EC2, Elastic Beanstalk, S3 file serve, and Lambda. My project portfolio spans diverse domains, including ERP systems, IoT projects, financial applications, SaaS solutions, and e-commerce platforms. Thank you for considering my profile.
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    Ruby on Rails Stack
    Mockup
    Angular
    JavaScript
    React
    MERN Stack
    GitHub
    Ruby
    Laravel
    Python
    RESTful API
    Ruby on Rails
    MySQL
    PostgreSQL
  • $80 hourly

    • 4.7/5
    • (67 jobs)
    I am a senior full stack web developer with 9+ years experience. I am experience Full Stack web developer with a bachelor of engineering in software. I have a ton of experience building and architecting large scalable web apps and APIs. I provide innovative solutions that satisfy my client needs. Skills: Ruby on Rails Hotwre Shopify Node.js ReactJS Vue.js Javascript JQuery Tailwind CSS
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    Phoenix
    Golang
    Elixir
    Ruby
    PostgreSQL
    React
    Node.js
    Ruby on Rails
    Vue.js
  • $50 hourly

    • 5.0/5
    • (52 jobs)
    ✅ TOP 1% on Upwork (expert vetted badge) ✅ Seasoned Ruby on Rails developer (16+ years) ✅ 8500+ completed hours. I am open-minded, communicative, responsive, and have good English skills. For the last 16+ years, I've been working as a Full Stack Web Developer. I have good expertise in BigBlueButton, GreenLight, Ruby, Ruby on Rails (RoR), PHP, Laravel, Codeignitor, MERN, WordPress, Magento Mobile (iOS, Android, Flutter, React Native), Databases(Oracle, MySQL, PostgreSQL, HANA, Mongo, SQLite3), Search engines(Solr, Thinking Sphinx, Elastic Search), Redis, Memcache, RabbitMQ Payment Gateway(Stripe, Amazon, Apple Pay etc.) HTML5, CSS3, CoffeeScript, SCSS, JS frameworks(Angular, Bootstrap, jQuery etc.), SEO, Social media integration, Web Scrapping, REST/SOAP API, Web Services, Amazon AWS, Azure, Digital Ocean, Heroku, Web servers(Apache+Ngnix, Passenger, Unicorn), TDD, BDD, Rspec and many others. I have done many websites and mobile app large and small, independently and as a team member. I would like to build long-term business relationships with high quality and value, to be both productive and profitable for the clients. You are always welcome to know more about my expertise.
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    Ruby on Rails
    MySQL Programming
    CodeIgniter
    DigitalOcean
    Node.js
    React
    MongoDB
    React Native
    Flutter
  • $10 hourly

    • 4.9/5
    • (29 jobs)
    Do you have a task that you need automated? A Telegram bot idea you want to be brought to life? Or even better, a telegram bot to automate your tasks? Then I'm your guy! I'm specialize in: -Python Programming Language -Telegram bot development -Telegram mass messaging -Web scraping -Web automation I automate everything I possibly can!
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    Web Scraping
    Machine Learning
    Web Crawling
    Chatbot Development
    Bot Development
    Automation
    Data Scraping
    Data Science
    Chatbot
    Selenium
    Telegram
    Python
  • $30 hourly

    • 4.8/5
    • (38 jobs)
    I am a Senior Full-Stack developer with more than 7 years of experience with Ruby, Ruby on Rails, React.js, Javascript, Git, Mysql/Postgresql/ AWS, Heroku, and all other development tools. I'm having extensive experience in both front-end and back-end development. My skills: - Ruby/Ruby on Rails - React.js, Redux, Typescript, Graphql - SQL DB's: PostgreSQL, MySQL, Oracle - NoSQL, in-memory, key-value stores: MongoDB, Redis - HAML, SASS, jQuery, Twitter Bootstrap - JS MVC: React.js Backbone.js, - TDD/BDD: RSpec, Capybara, Cucumber, Selenium - API: Facebook, Twitter, Amazon, Google Maps etc. - Git, Svn - Github, Gitlab, Bitbucket - various gems and libraries Please provide me a chance to serve you with my skills.
    vsuc_fltilesrefresh_TrophyIcon Heroku
    Sharetribe
    React Native
    Spree
    GitHub
    API Development
    Backbone.js
    Shopify
    React
    JavaScript
    Ruby
    Amazon Web Services
    Ruby on Rails
  • $200 hourly

    • 4.9/5
    • (42 jobs)
    𝐄𝐱𝐩𝐞𝐫𝐭-𝐕𝐞𝐭𝐭𝐞𝐝: 𝐓𝐨𝐩 𝟏% 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤 Want to drive growth with AI? Need a custom ML solution, or to integrate chatGPT into your team's workflows? Let's talk. I specialize in AI, deep learning and large language models (LLMs). Additionally, I have years of experience as a backend developer - I can ensure your application meets production quality scalability and security standards. I excel at problem-solving, and can deliver solutions that will provide deep value for your business. Reviews from past clients: 𝐌𝐚𝐫𝐜 𝐃𝐞𝐮𝐬𝐭𝐞𝐫, 𝐂𝐨-𝐅𝐨𝐮𝐧𝐝𝐞𝐫 𝐨𝐟 𝐖𝐲𝐝𝐞𝐧 𝐂𝐚𝐩𝐢𝐭𝐚𝐥: "Ruairí took our trading algorithm to the next level. He was punctual, reliable, and a nice guy to work with. Looking forward to do so again in future." 𝐄𝐥𝐚𝐢𝐧𝐞 𝐊𝐞𝐥𝐥𝐲, 𝐂𝐨-𝐅𝐨𝐮𝐧𝐝𝐞𝐫 𝐨𝐟 𝐊𝐥𝐢𝐫 𝐖𝐚𝐭𝐞𝐫: "Ruairí's LLM application added significant value to our software stack. He took our business requirements, met with stakeholders, and delivered his AI solution on time and to specification. We'd highly recommend him and hope to work with him again in future." 𝐓𝐢𝐦 𝐒𝐭𝐮𝐫𝐠𝐢𝐬𝐬, 𝐅𝐨𝐮𝐧𝐝𝐞𝐫 𝐨𝐟 𝐇𝐮𝐠𝐥𝐨 𝐄𝐧𝐞𝐫𝐠𝐲: "Ruairi is a great freelancer and he helped solve many problems in our backend. He is very committed to the task and will troubleshoot issues to get to the project objectives. Ruairi's communication is first class and I can recommend him to any business" 𝐒𝐤𝐢𝐥𝐥𝐬: • LLMs • High-Throughput AI Engineering • Pytorch • FastAI • Python • Node & Typescript • Databases (SQL, Document, KV) • Cloud Computing/Devops/Infrastructure (AWS, Azure, GCP) 𝐇𝐨𝐰 𝐓𝐨 𝐆𝐞𝐭 𝐒𝐭𝐚𝐫𝐭𝐞𝐝: I offer 15 minute consultations to discuss your business needs. Expert advice, tailored to your use case. By the end of the call, you'll have a greater understanding of what your project involves. Shoot me a message and let's talk. I freelance full time and respond to all queries within 24 hours. Let's get to work!
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    Deep Learning
    Gemini
    LLaMA
    GPT Chatbot
    TensorFlow
    PyTorch
    GPT-4
    ChatGPT
    AI Consulting
    Generative AI
    Python
    AI Chatbot
    Artificial Intelligence
    Machine Learning
    Natural Language Processing
  • $40 hourly

    • 5.0/5
    • (39 jobs)
    My passion is making ideas come to life, be it working solo, as part of a team or leading a team of fellow developers. Throughout my 5 years of development experience, I worked everywhere from startups to big companies, building products from the ground up or implementing new features. Also relevant to my set of skills is that - previously to becoming a developer - I worked as product manager for some of the biggest tech companies in the world, which still helps me to have a more holistic view of the whole work that goes into making a successful product. My go-to technologies are React and Node.js, and I have completed a wide range of projects using them. Those are not the only two libraries/frameworks I'm familiar with though, and I'm always happy to discuss my client's needs and find the best solutions for them. I consider myself creative and hardworking, as my stats show. If you liked my profile so far, drop me a message and we'll discuss how I can be useful to your project.
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    Mobile App Development
    React Native
    API
    Dashboard
    Custom Ecommerce Platform Development
    API Development
    Bootstrap
    Ubuntu
    Node.js
    ExpressJS
    MongoDB
    API Integration
    JavaScript
    React
  • $28 hourly

    • 5.0/5
    • (23 jobs)
    ✮✮✮✮✮ 𝗨𝗽𝗪𝗼𝗿𝗸'𝘀 𝗧𝗢𝗣 𝗥𝗮𝘁𝗲𝗱 𝗣𝗟𝗨𝗦 𝗙𝗿𝗲𝗲𝗹𝗮𝗻𝗰𝗲𝗿 || 𝟭𝟬𝟬% 𝗖𝗹𝗶𝗲𝗻𝘁 𝗥𝗲𝗰𝗼𝗺𝗺𝗲𝗻𝗱𝗲𝗱. ✮✮✮✮✮ ✮✮✮✮✮ Go from zero to MVP. Then MVP to full scale. ✮✮✮✮✮ ✅ 3000+ Hours logged on UpWork. ✅ 5 Star Reviews. ✅ 4+ Years of experience in Web app development 𝗣𝗿𝗶𝗺𝗮𝗿𝘆 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝗲𝘀: ✔ Ruby on Rails development ✔ Frontend: React Js, jQuery/Javascript, CoffeeScript ✔ Front-End Development | HTML5/CSS3, TailwindCSS, Bootstrap5 - JavaScript Frameworks | jQuery, React ✔ HAML, CSS3 ✔ Git ✔ Databases: Postgres, MongoDB, MYSQL ✔ API development: RESTful APIs ✔ Testing: RSpec & Capybara and have done TDD /BDD ✔ DevOps: Comfortable handling server setups & deployments and have experience working with dedicated servers, Amazon EC2, Heroku. ✔ Methodology: Agile & Scrum/Kanban methodologies and great communication skills. ✔ Task Management: Trello,Asana,Jira,Basecamp 🔰 I am a passionate and Top Rated web developer who loves to develop new ideas. To utilize my capabilities and technical skills to bring out the best of me and to be active and flexible in the ever-changing technological environment. If you choose to work with me, I can guarantee you that I will provide: ➜ Quick on-time delivery. ➜ Good communication and Regular updates on the project status. ➜ Clean and optimized code. ➜ Unlimited revisions till you are satisfied. 💻 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗦𝗸𝗶𝗹𝗹𝘀: 👉 I have more than 3 years of Hands on experience in Ruby on Rails, jQuery, HTML5, CSS3, HAML, SASS, MySQL, PostgreSQL, and Redis. 👉 I have worked on many enterprise applications and successfully handled their front end using HTML, Angular, CSS, jQuery, Bootstrap and back end using Rails, MySql, Postgres based on TDD/BDD development techniques.
    vsuc_fltilesrefresh_TrophyIcon Heroku
    Ecommerce Website Development
    Web Development
    Capybara
    Web Application
    Amazon S3
    Xero
    Shopify
    React
    Stripe API
    Airtable
    API Development
    Amazon Web Services
    Ruby on Rails
    PostgreSQL
  • $27 hourly

    • 4.8/5
    • (13 jobs)
    I am a full stack developer having 10 years experience of building scalable applications. Have worked on various large and small applications. • Have both frontend and backend experience. • Experience working with Ruby on Rails (3.x, 4.x 5.x). • Experience with frontend frameworks such as React.js, AngularJs, Vue.js and Bootstrap. • Experience with PostgreSQL, Heroku and Git. • Has experience being a lead developer. • I always keeps the task on track. • Experience writing tests to ensure a robust and solid application. • I have experience of working with startup team members. • Great experience and confidence working with Frontend and keeping it simple. • Has experience working with continuous deployment and integration.
    vsuc_fltilesrefresh_TrophyIcon Heroku
    CSS
    HTML
    JavaScript
    GitHub
    .NET Core
    PostgreSQL Programming
    MySQL Programming
    Amazon EC2
    Amazon Web Services
    Ruby
    React
    Ruby on Rails
    jQuery
    Docker
  • $70 hourly

    • 4.9/5
    • (5 jobs)
    Worked on many projects from scratch and with big projects already in production. Let my past work speak for itself: 1. gemnote.com (Ruby/Rails, HTML, CSS, Javascript (Angular 1.x), Stripe, Rest API) 2. zephr.com (Ruby/Rails, CSS, HTML, Javascript, Zoom API) 3. shoobs.com (Ruby/Rails, CSS, HTML, Javascript, Stripe) 4. bidsketch.com (ReactJS, Redux) 5. reefer.com (Ruby/Rails, CSS, HTML, Javascript, Stripe) 6. Orca (Javascript (Electron, VueJS), HTML, CSS, FIrebase, Social networks integration) 7. namastream.com (Ruby/Rails, HTML, CSS, Javascript, Angular 1.x) 8. protonet.com (Ruby/Rails, HTML, CSS, Rest API, Linux system, Microsoft Azure, Redis, RabitMQ) 9. findrow.com (Ruby/Rails API, HTML, CSS, ReactJS/NextJS (mobx, mobx state tree)) 10. dps.aki.do (NodeJS, ReactJS/NextJS, HTML, CSS) 11. frankforall.com (Ruby/Rails API, ReactJS/NextJS (mobx, mobx state tree), OpenPay API, React Native (Android & iOS)) 12. phixst.com (Ruby/Rails API, Stripe) ... And many more...
    vsuc_fltilesrefresh_TrophyIcon Heroku
    Mobx
    Electron
    RSpec
    Performance Optimization
    Redux
    Database Architecture
    RESTful API
    CSS 3
    React
    Ruby on Rails
    Ruby
    JavaScript
    Vue.js
  • $20 hourly

    • 4.9/5
    • (226 jobs)
    statistics don't lie. Isn't that how the saying goes? I can talk about degrees I received, or dozens of completed certifications, perhaps throw in the name of a college/university I attended. Instead I'm simply going to let stats speak for themselves: - Member for over 6 years - Over 200 past gigs, mostly successful - JSS Score of 99% (as of today) - The word ruby appears in past contract titles/reviews 50+ times - Lots of hours worked, lots of transactions ( ~ 5000 hours, over $400k ) - The word javascript appears in past contract titles/reviews 10+ times If you find a programmer with equal or better stats, and he's available to work at a lower rate than me, I can match or beat his rate! Please spend 5 minutes reading my profile page - specially the feedback section. You would need to click "More" to read the older reviews. Newcomers (here at upwork) often don't appreciate the statistics - perhaps thinking Upwork can be fooled with fake reviews. Some people don't realize this is a tough industry. Did you know - the Standish Group Chaos Report found that only 29% of IT projects are successful, and 19% are utter failures. So, as a client, do you want to be in the 29 percent or the 71 percent?
    vsuc_fltilesrefresh_TrophyIcon Heroku
    Adobe Illustrator
    Code Review
    Bitcoin
    Rust
    SaaS
    Django
    API Integration
    Adobe Photoshop
    Web Development
    Node.js
    React
    Ruby on Rails
    JavaScript
    Responsive Design
  • $75 hourly

    • 4.7/5
    • (46 jobs)
    Block chain Expert------- For over 15 years I have been working as a backend developer and have solid and extensive experience in the design and development of enterprise and fintech systems. I've developed a backend for exchanges, marketplaces, and a couple of Financial Mobile Apps. The Blockchain space has become very interesting for me, and for the last 3 years, I've worked mainly on Blockchain-related projects. I've made many integrations for such blockchains as Bitcoin, Ethereum, Tron, Polkadot, Solana, and many others, including a fully custom blockchain. On top of my experience, I've worked on NFTs, DeFi paltforms, cross-chain and token exchanges, wallets, oracles, crypto casinos. - NFTs (Creation, Marketplace, for ex. like on Rarible, SuperRare, etc.) - ERC20 - Token creation and distribution - DeFi (Yield Farming, for ex. via platforms like Yearn, Uniswap, Sushiswap, Compound, Aave) - Flashloans & Arbitrage - Smart Contract Development - dApp and App Development - Smart-contract integration development: Oracle APIs, DeFi platforms, Gambling dApps, Crypto wallets, Marketplaces - Smart contracts development: Solidity on Ethereum (ETH) and Binance Smart Chain (BSC), Tokens, smart-contract dApps My "toolbox": - Solidity, Vyper & Ethereum - Rust, Substrate & Polkadot - Truffle, Brownie, Hardhat ((incl. Unit Testing, Property/Fuzzing Testing) - Metamask - React/Typescript, web3.js/ethers.js - Developing full stack Blockchain Solutions: Including the core network setup, architecture design, business logic implementation, all the way up to front end and application designs. - Developing full stack Mobile and Web Applications: I have experience in trending stacks such as MERN, but will never stop my learning here. I am updating myself with other stacks and if work comes in, I think you can count on my skills. - Cloud Solutions: I have helped clients build their application infrastructure on both Amazon Web Services and Google Cloud Platform, so you can say they just come to me with an idea and sit back and relax while I do everything from ground up.
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    Graphic Design
    Ruby on Rails
    WordPress
    Magento
    RESTful API
    CodeIgniter
    JavaScript
    PHP
    Node.js
    React
  • $40 hourly

    • 5.0/5
    • (64 jobs)
    I am Senior Full Stack Developer. I have been working on large scale applications with Ruby, Python and JavaScript. I am in Top Quality developers with over 10000+ hours logged & 100% Job Success rate with 5.0 feedback rating. Have successfully delivered 10+ large-scale and minimum viable solutions. Skills & Expertise: - Back-end: Ruby, Rails, Django, Flask, Dash, - Front-end JS: React.js, jQuery, Vue.js, Angular.js - Front-end UI development: HTML5, HAML, Zurb Foundation, Twitter, Bootstrap - Databases: PostgreSQL, MySQL, Sqlite, NoSQL, MongoDB, DynamoDB - TDD: RSpec, Mini_test, TestUnit - Testing frameworks: Selenium - Servers: AWS, DigitalOcean, Heroku, Nginx - Code Management Tools: Github, Bitbucket - Project Management Tools: Asana, Jira, Trello, Pivotal Tracker and few more as well
    vsuc_fltilesrefresh_TrophyIcon Heroku
    C++
    Ruby
    Ruby on Rails
    API Integration
    Scripting
    Amazon MWS
    Software Architecture & Design
    Automation
    Data Mining
    Front-End Development
    React
    HTML5
    CSS 3
    JavaScript
  • $140 hourly

    • 4.9/5
    • (20 jobs)
    Helping organizations run 𝙛𝙖𝙨𝙩𝙚𝙧🏃, 𝙨𝙢𝙖𝙧𝙩𝙚𝙧🧠, 𝙖𝙣𝙙 𝙢𝙤𝙧𝙚 𝙥𝙧𝙤𝙛𝙞𝙩𝙖𝙗𝙡𝙚🤑 Located in Bardstown, KY. 20+ years of experience in IT Management 15+ years of experience in Software Development 15 years management in JIT Automotive Manufacturing I manage cross functional teams for my projects Many development projects in Ruby on Rails. Other projects in many languages and frameworks. Web / Desktop / Mobile / Controls Javascript, PHP, Flutter, Vue, Nuxt, React, React Native, Wordpress, Node.js, Go, C# MSSQL ( T-SQL ), Postgres, MySQL, GraphQL, MongoDB, Snowflake
    vsuc_fltilesrefresh_TrophyIcon Heroku
    React Native
    Recruiting
    Spree
    Flutter
    Customer Relationship Management
    Enterprise Resource Planning
    Tailwind CSS
    JavaScript
    Nuxt.js
    SQL
    React
    Ruby
    Vue.js
    Ruby on Rails
  • $60 hourly

    • 5.0/5
    • (23 jobs)
    Hello and thank you for reading my profile! My name is Henry and I am at your service. I have been working with Ruby on Rails for four years now. I still love coding with Rails every day. I consider myself a polymath of many computer techonologies, with a strong focus on Web Development, and a strong focus on Rails within Web Development. I choose to focus on Rails because I find that its developers make careful and considerate choices about low level code implementations so that as an application developer I can focus on delivering high level features. Whether you need your current app debugged or you have an idea that you want to design and deploy, I will give you my honest opinion on what your app needs and how long it's likely to take. I have a lot of web development skills: 1. Modeling and implementing your business logic with ActiveRecord and MySQL or Postgres. 2. Deploying to Heroku, using Heroku plugins for SQL, SendGrid, asynchronous tasks and scheduled tasks. 3. Configuring DNS. 4. HTTP protocol examination and debugging including Cross-Origin Resource Sharing and many other headers. 5. Frontend Coding, I especially like StimulusJS, Turbo, and Hotwire as well. 6. Keeping users engaged with push notification technology. 7. Familiarity with Docker. 8. Familiarity with Ansible. 9. Familiarity with Ubuntu Server. I'm looking forwards to joining your project and making a strong contribution. Thank you very much.
    vsuc_fltilesrefresh_TrophyIcon Heroku
    Google Maps API
    ECMAScript 6
    Linux System Administration
    Progressive Web App
    API Development
    Bootstrap
    Vue.js
    Ruby on Rails
    CSS 3
  • $20 hourly

    • 4.9/5
    • (28 jobs)
    Hi, “What new technology does is create new opportunities to do a job that customers want to be done" Since 2010, I've been working as a full-stack Web Developer. For almost 8+ years I have in several start-ups as well and I have seen the maintenance work for the same. I'm also an experienced full-stack web developer and well versed with Ruby on Rails as well as PHP/Laravel. I like to work efficiently by making sure my projects are well organized and clearly documented. For more complex projects, I make sure that my clients have mockups that meet their expectations of what the product should look like, as well as technical specs on main features. When working on a new project, I like to speak with the client, so that I can have a clear understanding of his/her needs and vision of the project. I'm honest and fair. Listed below are my experience and skills. — Ruby on Rails, PHP (Upto Latest Version) — Test: Cucumber, Rspec, FactoryGirl, Copybara — Front-end: XML, JSON, HTML5/CSS3, JavaScript, Angular.js, Reactjs, Nodejs, Redux, Vuejs, Backbone.js, Bootstrap; — OS: Linux — VCS: Git, Mercurial, Bitbucket, Gitlab ,SVN; — Bug/Issue trackers: Jira, Assembla, Redmine, Asana, Pivotal Tracker; — SQL,XML, JSON; — Deploying applications to Heroku, AWS — Social & Payment API Integration — CMS: WordPress, Woocommerce. — Framework: Codeigniter, Laravel. — Web App: Angular. — Designing: Adobe and Photoshop Expert and other front-end technologies. Time is the best I upon for making something to exist. Satisfying the client's requirements completely is my eternal happiness. Once you give me an idea detail, I will make it real. I am ready to initiate work immediately with quality work, timely delivery, and regular updates. Thank you for your time of visiting my profile page. Very excited to discuss your ideas. Best Regards,
    vsuc_fltilesrefresh_TrophyIcon Heroku
    Redux
    TypeScript
    Node.js
    Web Development
    jQuery
    CSS
    Ruby on Rails
    WordPress
    Amazon EC2
    PHP
    JavaScript
    MySQL
    Laravel
  • $49 hourly

    • 5.0/5
    • (72 jobs)
    🥇 Top 1% - UpWork Serverless & Cloud Solutions. Working with AWS and serverless approach for the last 10 years. I can help you develop a serverless application or migrate it to a serverless approach AWS services: Lambda, Step Functions, API Gateway, AWS Glue, Step functions, AWS Batch, Elastic Beanstalk, Auto Scaling, S3, CloudFront, CloudFormation, Route53, CodeBuild, CodeDeploy, CodePipeline, SageMaker, IoT Checkout some interesting projects I worked on in the work history and portfolio sections below ⤵️
    vsuc_fltilesrefresh_TrophyIcon Heroku
    Serverless Computing
    Amazon API Gateway
    Cloud Computing
    Serverless Stack
    Terraform
    Amazon RDS
    Amazon S3
    AWS Lambda
    AI App Development
    Web Development
    Amazon DynamoDB
    Node.js
    TypeScript
    React
    Amazon Web Services
  • $35 hourly

    • 5.0/5
    • (89 jobs)
    I am a professional software engineer with more than 8 years of experience in web development. I also a lead of a team consisting of highly experienced web/mobile developers. My skill set: + Ruby on Rails, NodeJS, Django + Web3/Blockchain app development + Shopify App Development + Mobile Application Development + API Web services development and Integration + Application architecture design + Attention to details + Proactive communication skills ===== DETAILS ====== # Web development skills: + Ruby on Rails, NodeJS, Django + E-Commerce: Spree, Shopify, Sharetribe + TDD and Unit Testing with Cucumber, RSpec, Cabybara, FactoryBot + Front-end technologies: AJAX, CSS3, HTML5, jQuery, BackboneJS, AngularJS, ReactJS, TypeScript + Mobile-first responsive design: Bootstrap, Tailwind, MaterialUI + Relational and NoSQL databases: MySQL, PostgreSQL, MongoDB, Redis + Payment service integration: Paypal, Stripe, Checkout, Inpendium, Braintree, Authorize.net + Application Monitoring: NewRelic, BugSnag, Errbit, Rollbar + Deployment platforms: Heroku, AWS, Rackspace, DigitalOcean, VPS, EngineYard + Amazon Web Services: CloudFront, Elastic Load Balancer, RDS, ElasticCache, ElasticBeanstalk, EC2, Route53, Kinesis, Lambda, etc + Continuous Integration Deployment: Tddium, Travis, CircleCI + Social network and third-party integration: Google Maps, Google API, Facebook, Slack, Twitter # Web3 skills: + Writing smart contracts using Solidity and Truffle framework + Deploying smart contract to Ethereum blockchain + Developing dApps using modern front-end frameworks (React, Vue) + Strong knowledge of relevant technologies/tools: Ganache, MetaMask, Hardhat, NFT, Remix + Third-party services: Alchemy, Moralis # Mobile development skills: + Objective-C and Swift languages + Experience working with REST APIs, Parse.com, and CloudKit as the back-end + Ability to connect iOS application with external services via APIs: Google, Facebook, Intercom, etc. + Payment features with Stripe, Authorize.net, Apple In-App Purchases for both recurring and regular payment systems + Location-based applications with Google Maps SDK, MapKit, Mapbox (for offline maps) + Application testing & deployment: Fabric, HockeyApp, Diawi, Testflight # Others: + DevOps skills: configuring deployment server, troubleshooting and debugging server issues + Designing multilingual applications + Git workflow + Management tools: Trello, PivotalTracker, Asana, Basecamp
    vsuc_fltilesrefresh_TrophyIcon Heroku
    Vue.js
    Tailwind CSS
    Bootstrap
    Ruby
    Django
    Python
    React
    JavaScript
    Ruby on Rails
    CSS 3
    Amazon Web Services
  • $31 hourly

    • 4.9/5
    • (58 jobs)
    With 8 years of Ruby on Rails expertise, I've worked with companies across the USA and Europe, excelling in backend development and UI design. I'm primed to confidently tackle any challenge. ✅ 𝐀𝐝𝐝𝐢𝐭𝐢𝐨𝐧𝐚𝐥𝐥𝐲, 𝐬𝐤𝐢𝐥𝐥𝐞𝐝 𝐢𝐧 ✅ JavaScript: React JS, Vue JS, Vanilla JS, CoffeeScript , Hotwire Stimulu, NextJs DB: PostgreSQL, MySQL, MongoDB, SQLite, Redis. Testing: rSpec, Cucumber, Capybara. Search: ElasticSearch. Payment Systems: Paypal, Stripe, Square. Project Management Tools: Monday.com, Jira, Trello, Pivotal. AWS, S3, EC2, RDS, Heroku, Docker, Digital Ocean, Google Analytics. Api Development, Api Integration, RESTful API So, are you ready to collaborate with a developer who talks less and delivers more? Let's connect and craft software that not only functions flawlessly but also tells your unique story. Because in the end, it's not just about code – it's about creating an experience that resonates with your audience. Let's dive into a discussion – reach out and let's make I.T happen!"
    vsuc_fltilesrefresh_TrophyIcon Heroku
    ERP Software
    CSS
    Spree
    RESTful API
    Ecommerce Website
    AngularJS
    HTML5
    Ruby
    Web Development
    API Development
    JavaScript
    Tailwind CSS
    React
    PostgreSQL
    Ruby on Rails
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