Concerned about poor app performance impacting your bottom line? Research indicates that 53% of users will abandon an app if it takes more than three seconds to load. I am a Senior Ruby on Rails developer with a 8 years of experience in web application development, with a deep understanding of the Ruby on Rails framework, I am committed to delivering exceptional results and providing efficient solutions to your projects 𝐌𝐘 𝐏𝐑𝐎𝐅𝐄𝐒𝐒𝐈𝐎𝐍𝐀𝐋 𝐀𝐂𝐇𝐈𝐄𝐕𝐄𝐌𝐄𝐍𝐓𝐒 𝐀𝐑𝐄: 1. Spearheaded the successful delivery and launch of 25 sophisticated Ruby on Rails web applications, ensuring seamless functionality and adherence to client specifications, resulting in high client satisfaction rates 2. Orchestrated performance optimization initiatives, implementing cutting-edge strategies that led to a remarkable 42% reduction in page load times, enhancing user experience and increasing user engagement 3. Guided a multidisciplinary development team in the seamless migration of a complex legacy system to Ruby on Rails, streamlining operations, improving system efficiency, and generating substantial cost savings in maintenance and support 4. Implemented rigorous security protocols and industry best practices, fortifying Ruby on Rails applications against potential cyber threats and reducing the risk of data breaches by a significant 50%, safeguarding sensitive user information 5. Demonstrated active involvement in the Ruby on Rails community by making impactful contributions to open-source projects. Garnered recognition for 3 notable code contributions, widely adopted by the community, and enhancing the overall functionality and reliability of the Ruby on Rails ecosystem 𝐖𝐇𝐀𝐓 𝐌𝐘 𝐂𝐋𝐈𝐄𝐍𝐓𝐒 𝐒𝐀𝐘 𝐀𝐁𝐎𝐔𝐓 𝐌𝐄: ⭐️ «Vladimir delivered exceptional results for our healthcare project. Gotoinc’s expertise in Ruby on Rails development exceeded our expectations. Their attention to detail, adherence to coding best practices, and a strong focus on security ensured the protection of sensitive patient data. Their professionalism, effective communication, and timely delivery were impressive. We look forward to future collaborations» - Sarah, CTO ⭐️ «We are highly satisfied with Gotoinc Team’s work on our e-commerce platform. Their deep knowledge of Ruby on Rails and e-commerce best practices resulted in a robust, scalable, and user-friendly web application. Their optimization techniques improved performance, leading to faster page load times and increased conversions. Their proactive communication and attention to detail made the project a success. We highly recommend the Gotoinc team for e-commerce projects» - Alex, Co-Founder 𝐇𝐎𝐖 𝐓𝐇𝐄 𝐇𝐈𝐑𝐈𝐍𝐆 𝐏𝐑𝐎𝐂𝐄𝐒𝐒 𝐋𝐎𝐎𝐊𝐒 𝐋𝐈𝐊𝐄: There are two options for collaborating with Gotoinc: - Talents-as-a-Service model a dedicated expert(-s) on a subscription basis. - Project-Based Collaboration model we deliver a certain scope or solution in a pre-defined timeline/budget. 𝐇𝐨𝐰 𝐭𝐨 𝐬𝐭𝐚𝐫𝐭: 1. Having an intro, where we identify your request 2. Our team identifies specific Talent or Team for your request 3. We deeply research your request and outline unique collaboration terms 4. Gotoinc presents your unique proposal and negotiates it with You 5. We sign a contract 6. We kick off our ongoing collaboration 💻 𝐑𝐮𝐛𝐲: Ruby, Rails, Sinatra, Padrino, Grape, Sidekiq, Nginx, RSpec, Capybara, Rubocop, Capistrano, Unicorn, Puma, Elastic Search 🔧Databases: PostgreSQL, MySQL, SQLite3, Redis 📊 Web Servers: Apache, Nginx 💻JavaScript JavaScript, ES 6/7, React, Vue, Jasmine, Handlebars, JSX, SKIM 📈HTML/CSS HTML5, CSS3, SCSS, Bootstrap, HAML, SLIM 📡 VCS: Git (Github, Bitbucket) 🆙 If you are interested in discussing your project with me, make sure to click the 👉🟢INVITE🟢 button, and let’s talk 🤝 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐞𝐝 𝐒𝐤𝐢𝐥𝐥𝐬: Ruby on Rails Development, Full-stack Web Development, MVC Architecture and RESTful APIs, Front-end Technologies (HTML5, CSS3, JavaScript), Responsive and Mobile-first Design, Database Design and Implementation (PostgreSQL, MySQL), User Authentication and Authorization, Integration of Third-party APIs, Deployment to Cloud Platforms (Heroku, AWS), Test-driven Development (TDD), Agile Methodologies (Scrum, Kanban), Version Control Systems (Git, GitHub), Project Management and Collaboration Tools (Jira, Trello), Documentation and Code Commenting Last updated: March, 2026

Are you looking for a highly experienced Ruby on Rails Developer to build robust, scalable, and high-performance web applications or enhance your existing systems? With 8+ years of dedicated experience in the Ruby on Rails ecosystem, I specialize in transforming complex ideas into elegant, efficient, and user-friendly digital products. My expertise lies in crafting clean, maintainable code that drives business value. I'm passionate about developing secure, test-driven applications, optimizing performance, and seamlessly integrating with third-party services. Whether you need a brand-new application from scratch, a major feature implementation, API development, or performance tuning for your existing RoR project, I bring a proactive, results-oriented approach. What I bring to your project: - Full-Stack RoR Development: From database design and backend logic (Ruby, Rails) to frontend integration (JavaScript frameworks, HTML, CSS/Sass). - Scalability & Performance Optimization: Identifying bottlenecks, refactoring code, and implementing caching strategies to ensure your application performs under heavy load. - API Development & Integration: Building secure and efficient RESTful APIs for mobile apps or external services, and integrating third-party APIs (payment gateways, CRMs, analytics). - Database Management: Proficient in PostgreSQL and MySQL, with strong skills in schema design, query optimization, and data migration. - Code Quality & Maintainability: Adhering to best practices, TDD/BDD (RSpec), and continuous integration to deliver reliable and easy-to-maintain codebases. - Problem-Solving & Debugging: A knack for quickly diagnosing and resolving complex technical challenges. My Toolkit Includes: Languages: Ruby, JavaScript (ES6+), HTML5, CSS3 Frameworks: Ruby on Rails, React.js / Vue.js / Stimulus.js (for frontend integration) Databases: PostgreSQL, MySQL, Redis Testing: RSpec, Capybara, FactoryBot Tools & Platforms: Git, GitHub/GitLab, Heroku, AWS (basics), Docker, Sidekiq, Webpacker I pride myself on clear communication, meeting deadlines, and delivering exceptional work that exceeds client expectations. Let's discuss your project and see how my Ruby on Rails expertise can help you achieve your goals. Ready to build something great together? Feel free to invite me to your job or schedule a call.

Top Rated | 25+ Clients Served | 12 Years Experience "Chatwoot Open Source Contributor" You’ve got a product to build but no time to babysit a developer. You need someone who takes ownership, moves fast, and delivers code that just works. Clients often say I “work like a tech co-founder,” not just a freelancer. My approach: clean, testable code, rapid iterations, and clear, proactive communication. I help startups and growing companies build fast, secure, and scalable web apps with a product-first mindset. Core Expertise: ✔️ Ruby on Rails ✔️ React / Next.js frontends ✔️ Scalable SaaS architectures (incl. AWS) ✔️ API development & integrations ✔️ AI / OpenAI-powered features ✔️ Agile workflows (Jira, Git, Trello) I can help you with: - Building an MVP - Migrating legacy systems - Scaling infrastructure for growth Why startups love working with me: - I work like a partner, not just a dev - I move fast without breaking things - I communicate proactively I deliver clean, maintainable code that lasts Let’s turn your idea into a working product and build something that lasts.

🚀 Experienced Ruby on Rails developer 🚀 | 🏎️💛 Yellow Miata driver 💛 If you’re looking for a Ruby on Rails developer who understands SaaS products, a full stack developer Saas who sees the entire system, or a react developer who values real user experience — let’s talk. I’m a Ruby on Rails developer with strong product thinking who helps startups and growing companies build reliable, scalable, and maintainable platforms for long-term success. My background includes building modern web app platforms and scalable web application systems with custom web design, software architecture and design, and scalable API integration practices. As a Ruby on Rails developer, I work closely with founders, CTOs, and product teams to turn business requirements into stable, production-ready solutions. I have extensive experience as an AI Saas developer, focusing not only on backend implementation but also on growth, retention, and monetization. As a web app developer, I design systems around real workflows, combining strong web app design and performance using JavaScript, CSS, HTML5, Bootstrap, and TypeScript. 🧠 Deep product-focused experience With over 9 years of experience, I’ve worked on everything from MVPs to high-traffic systems. I’ve contributed to multiple products as a SaaS developer, including chatbot Saas solutions and platforms powered by ruby on rails openai. My work often involves building scalable web application development systems with strong architecture, RESTAPI, API development, and Database architecture. I’ve also worked on frontend integrations as part of Ruby on Rails React stacks, ensuring smooth UX and consistent web design across products. As a full stack ai saas developer, I bridge frontend, backend, and infrastructure to deliver complete solutions, including saas mobile app integrations where needed using React Native, Next.js, Vue.js, Angular, and Node.js. ⚙️ What I do Ruby on Rails application development from MVP to scale SaaS platform architecture and system design Custom backend logic and API development (REST & GraphQL) Background jobs, queues, and async processing Cloud deployments, CI/CD pipelines, and automation Third-party integrations and advanced workflows Beyond traditional SaaS platforms, I’ve worked on ecommerce systems and custom solutions as a web developer, including Shopify integrations. I’ve also built AI-powered features as part of AI Saas platforms, acting as a full stack saas developer ai agents to deliver intelligent automation, AI Agent Development, Large Language Model integrations, Retrieval Augmented Generation, Vector Database, machine learning, and LLM Prompt Engineering. I also collaborate with teams as a saas designer, contributing to product structure and usability, and can support product presentation through saas demo video creation when needed. ✅ What you get working with me Clean, well-structured code and scalable architecture. As a SaaS developer, I focus on long-term product success. As a web application developer, I deliver solutions aligned with real business needs and support developing and maintaining the application and optimizing performance within an existing Ruby on Rails project. 🔹 Proven real-world impact I helped scale a startup product to nearly 1,000,000 users, shaping my approach to performance and reliability. I’ve also worked on systems requiring high data integrity and integrations across multiple services using PostgreSQL, Redis, MySQL, SQL, Firebase, Heroku, Amazon web services, and DevOps practices. 🏆 9+ years as a Ruby on Rails Developer with 150+ software products delivered 🚀 SaaS Developer | 26+ platforms bіuilt & scaled 💻 Web Application Developer | helped scale a startup product to nearly 1,000,000 users, shaping my approach to performance and reliability. ⭐️ Top Rated | 100% Job success score | 5-star reviews only 💰 $10K+ earned on Upwork | 5,000+ hours worked on different projects 🤖 15+ AI Products Delivered | Agents, RAG & Automation Systems 🔗 110+ Integrations built | Stripe, Shopify, OpenAI, Twilio & more 🌍 Clients across 9+ countries | Long-Term Partnerships & Repeat Business 🔒 Production-Ready Solutions | Secure, Scalable & Maintainable Code Experienced as a Rails + React Developer, Ruby on Rails architect, Senior Ruby on Rails Developer, senior Rails Developer, Ruby on Rails engineer, Full-stack web developer, and senior full-stack Ruby on Rails engineer with a strong background in Ruby on Rails. 🤝 Let’s build something solid If you’re looking for a Ruby on Rails developer who understands SaaS products, a full stack developer who sees the entire system, or a react developer who values real user experience — let’s talk.

🏆 Top-Rated Ruby on Rails Developer | Shopify App Developer with 10+ years of experience, 2500+ Upwork hours, and 40+ successful projects delivered. From AI-powered Shopify apps to Ruby on Rails backends integrated with large language models, I turn complex ideas into clean, scalable, production-ready systems. I focus on building scalable, maintainable systems with clean architecture and reliable performance. If you're looking to add AI capabilities to your product or build a powerful backend with Ruby on Rails, I can help you design and implement the right architecture. 🤝 Why Clients Choose Me ✅ 10+ years shipping production code — I've seen what works and what breaks ✅ Clean architecture focus — Your project won't become technical debt ✅ Proactive communication — You'll never wonder "what's happening?" ✅ Long-term thinking — I build for today and scale for tomorrow ✅ Business outcome focus — I care about your metrics, not just my code 🛒 Shopify App Development Specializing in modern Shopify apps and store solutions: ✅ Public Shopify App Development (Shopify App Store, OAuth, Billing API) ✅ Custom Shopify Apps for specific business workflows ✅ Shopify Store Development & Theme Customization ✅ AI-powered Shopify features (product descriptions, support automation) ✅ Shopify GraphQL & REST API integrations 💎 Ruby on Rails Web Development Full-cycle Ruby on Rails development for scalable platforms. ✅ SaaS platforms & custom web applications ✅ REST API & GraphQL development ✅ Database design (PostgreSQL, MySQL, MongoDB) ✅ Background jobs (Sidekiq, Redis) ✅ Payment integrations (Stripe, PayPal) 🤖 AI Development • AI chatbots & assistants (Claude / ChatGPT) • AI content generation • AI-powered search & recommendations • Automated workflows using LLMs • AI integrations inside SaaS products ⚙️ Deployment & Tools AWS EC2 • DigitalOcean • Heroku • Cloud66 GitHub • GitLab • Jira • Trello • Slack 💬 Need help building a Shopify app, Ruby on Rails platform, or AI-powered product? Send me a message and let's discuss how we can build your next AI-powered product.

I’m a Chicago-based software leader and founder of Gotoinc — a full-stack Talent-as-a-Service agency, focused on Ruby-powered solutions. We work with founders, engineering, and product leaders who need reliable talents, proficient in UI/UX design, front-end engineering, back-end engineering, and DevOps. This is a group of vetted professionals I’ve personally built and led over the years. We help: - Launch and scale Ruby on Rails platforms - Modernize legacy Rails applications - Improve performance and system architecture - Ensure long-term maintenance and reliability - Design a clean, intuitive UI/UX for complex workflows Among our projects: - FinTech platform associated with Growth Hacking creator Sean Ellis. We supported a private equity and fund services technology platform operating in complex financial environments. - HIPAA-compliant telemedicine platform for US-regulated markets. Long-term collaboration on a healthcare platform operating across multiple US states under strict regulatory and compliance requirements, handling sensitive medical data at scale. - EdTech ecosystem with IPO-level Due Diligence (GNS stock). We worked 7–8 years with GeniusU, supporting the platform through significant Due Diligence processes related to IPO readiness. At one stage, nearly the entire engineering team (except the CTO) was on our side. - IoT cybersecurity product (Product Management & UI/UX). We led product management and UI/UX for a security-focused IoT platform, specializing in complex dashboards, control panels, and data-heavy systems. - Enterprise collaboration with The Access Group (US division). After one of our previous projects was acquired, we were recommended as a key technical provider during the early-stage scaling within a larger enterprise structure. We work through 2 options: - Talents-as-a-Service model. A dedicated expert(-s) on a subscription basis. - Project-Based Collaboration model. We deliver a certain scope or solution in a pre-defined timeline/budget. How to start: 1. Having an intro, where we identify your request 2. Our team identifies specific Talent or Team for your request 3. We deeply research your request and outline a collaboration proposal for your specific case 4. Proposal presentation and negotiations 5. Paperwork 6. Collaboration kick off

I am a Ruby developer with 9+ years experience who loves to make a good job, and finish it on time. I like to follow good practices and expand the knowledge whenever I can. I have experience with Unix like operating systems, Rails, Postgresql, Mysql, TDD (Rspec, Capybara), Javascript, HTML & CSS preprocessors, Redis, Elasticsearch, scraping among others.

🥇 Top 1% - Upwork Ruby on Rails & AI Solutions ✅ Expert in AI LLM OpenAI GPT ✅ Senior developer (10+ years experience) ✅ 50 completed projects & 9000 hours on UpWork! 🇺🇸 Work in PST/PDT time zone. Hi, 👋 I'm Alex! I've worked with dozens of Ruby on Rails applications, from small startups to huge production apps with millions of users. Included: SAAS, IAAS, marketplace, search engines etc. Also, I am an OSS contributor, maintaining RubyAI, kredis, cookies_eu, and other gems in the Ruby ecosystem. - Ruby and Ruby on Rails - JavaScript, React - Stimulus, Turbo, Hotwired - HTML, HAML, and HTML5 - PostgreSQL and MySQL for backend databases - Version control with Git and GitHub - SAAS, IAAS, eCommerce applications. - UX/design, SEO - DevOps (Hetzner, DigitalOcean etc)

I’m a Senior Ruby on Rails Engineer and CTO-level System Architect with over 10 years of experience designing, scaling, and delivering complex web platforms end-to-end. I specialise in architecting secure, high-availability systems using Ruby on Rails as the core backend framework, applying domain-driven design, modular service boundaries, caching strategies, and event-driven workflows to ensure long-term maintainability and performance. I’ve built everything from monoliths with clean domain separation to microservice ecosystems connected through message queues and API gateways. My frontend engineering experience includes Hotwire (Turbo & Stimulus) for real-time Rails-native interactivity and React.js for component-driven UIs where scalability and state management matter. On the data side, I have deep expertise in PostgreSQL, designing normalised schemas, advanced indexing, partitioning strategies, and query optimisation to support high-volume transactions. I frequently leverage Redis for distributed caching, job orchestration, rate limiting, and session management. As a system architect, I design and deploy infrastructure across AWS, GCP, and Azure, using services like EC2, ECS/EKS, S3, Load Balancers, Cloud SQL/RDS, Lambdas, and Cloud Functions to build resilient, cost-efficient systems. I implement fully automated CI/CD pipelines using GitHub Actions, GitLab CI, or CircleCI to enforce code quality, testing, security scans, and blue/green or rolling deployments. I rely on RSpec, Minitest, Capybara, and Cypress to maintain strict TDD/BDD practices, ensuring stable, predictable releases. My architecture approach prioritises observability, structured logging, distributed tracing, metrics dashboards, and automated alerts, so systems remain transparent and easy to operate at scale. Having worked as a CTO and engineering lead, I guide teams through architecture decisions, code reviews, cloud infrastructure planning, sprint processes, and long-term technical strategy. 🔥 Core Technical Expertise 💡Backend: Ruby, Ruby on Rails, Sinatra, Sidekiq, GraphQL, REST APIs 💡Frontend: HTML, CSS, Hotwire (Turbo & Stimulus), React.js, ES6, modular UI design, JS (ES6/CoffeeScript) 💡Databases: PostgreSQL (expert), MySQL, Redis, MongoDB 💡Cloud & DevOps: AWS (EC2, S3, RDS, Lambda), GCP, Azure, Docker, Kubernetes, Heroku, Digital Ocean 💡CI/CD: GitHub Actions, GitLab CI, CircleCI, automated deployments 💡Architecture: Microservices, event-driven systems, domain-driven design, caching, performance tuning 💡Testing: RSpec, Minitest, Capybara, Cypress, full TDD/BDD workflows 🔥 Other: 💡Version control system: Git 💡OS: Linux, Mac 💡Task managers: Basecamp, Trello, Asana, Pivotal, JIRA, etc. 💡Chats/Calls: Discord, Stride, Slack, Zoom, or any others. If you’re looking for a senior engineer and architect who understands not just how to write code, but how to design entire systems that last, let’s connect. I bring strong engineering leadership, clear communication, and a product-oriented mindset that aligns technical decisions with business goals.

Name: Hien Nguyen Sex: Male Nationality: Vietnamese Years of Experience: - 7+ years of experience in programming with Ruby on Rails, Rspec, sidekiq, redis, AWS - 10 years of experience in programming with C#, ASP .NET languages. - Familiar with AWS, Google, Azure clouds, stripe, paypal payment platform.