Hire senior Ruby on Rails developers in United States

Through my agency at invokestudio.io, I have helped several companies implement new features, prototype MVPs, build greenfield apps, clean up technical debt, and standardize the codebase. I am experienced with the full-stack and can also contribute with DevOps (backend) and UI (frontend) implementations. I am an open-source contributor and core member of Bridgetown. Some exciting passion projects I am currently building include a React CMS for Bridgetown, a ViewComponent library for Rails, and an online listing marketplace for my region at centralcoastclassifieds.com. I maintain a tech blog at mugenruby.com and cross-post articles on other blog sites. SKILLS Soft: I’m a great listener and communicator, empathetic towards the users of products I build, organized, adapt quickly to change and manage my time well. Hard: HTML/CSS, JavaScript/StimulusJS/React, Ruby/Rails, ActiveRecord/SQL, Git, AWS S3/SES, Email service providers, Relational data modeling, REST, RSpec/MiniTest, Error Monitoring/debugging, building/implementing APIs and webhooks, Redis, ElasticSearch, Stripe Connect. Projects I have done Built a peer-to-peer marketplace that allows users to search for items to rent from sellers. Sellers are required to connect a bank account via Stripe Connect before being able to create listings. ActionCable-powered chat feature with email reminders and read receipts Location-based searching with Searchkick and Opensearch (ElasticSearch equivalent) Calendar style booking system with confirmation settings and payment system Created an online application process to collect information from applicants looking to join a real estate listing service. Applicants are prompted to pay online, receive status emails, and digitally sign documents. Staff users can manage applications via filtering, updating the status of the application to denote its stage in the process, request payments and signatures, and create events links that are populated and sent out via email. PDF generated with data from the applications filled by users. Generation of PDF triggers actions that involve callbacks, API calls, and emailing users, and ability to download signed PDF via email or UI. Various API calls and listening for web hooks during the digital signing process via Docuseal’s service. Involves uploading pre-filled PDF as a template, calling it again when requested for signature, and listening for an event to indicate it was completed. Stripe Checkout integration with custom line items, redirects, and object instantiation upon successful payments. Built a questionnaire builder that allowed users to create questions organized by custom surveys. Referenced existing Figma screens and translated the user flow into code. Hotwired-heavy frontend with use of Turbo Frames and Turbo Streams. Use of StimuluJS for dynamically adding/removing question fields, tabs, and modals. Designed the data model relations from ground up.

Kent Beck recently said: “AI has reduced the value of 90% of what I do to zero, but the other 10% has gone up by 1000x.” So what’s in that “other 10%”? It’s the part non-engineers rarely appreciate — because they don’t see it firsthand: • Debugability • Introspection • Solid structure • High-quality tests Let’s be honest: debugability in AI-generated code is a disaster. We’re witnessing a flood of code written by non-engineers — vibe coders — that seems fine until it explodes months later. That’s when the real nightmares begin: bugs that require eight steps across different actors, cause baffling side effects in unrelated parts of the app, and defy every attempt at consistent reproduction. They’re unfixable, unscoped, and they never die. Introspection — the ability to look clearly into your code, your data, your stack — is an art. And as far as I can tell, AI isn’t introspecting. So it doesn’t care if your data is obscured or lost behind poorly constructed abstractions. But you should care. Solid architecture should be non-negotiable by now. Yet somehow, we still see apps with business logic scattered across layers, leaky abstractions, and no internal consistency. We once thought these lessons would become table stakes. They haven’t. And then there are tests. What counts as a high-quality test? In my paper, “Automated Tests from 10,000 Feet,” I explore how effective testing is about intent and confidence. In healthy codebases, tests are written with the code — not bolted on later. But for decades, computer science programs have overemphasized unit testing, neglecting system testing. Now we have a generation rebelling against tests altogether, many of them openly hostile to the practice. Why? Because we failed to demonstrate the real value of tests. Unit tests rarely catch regressions. But a lean, strategic suite of high-quality system tests? That’s pure gold. That’s what gives you the confidence to refactor, to ship, to move fast without breaking everything. It’s time for a course correction. Are you building something that needs a founding engineer? I’m looking for 50% equity, with a $0 salary. If you're serious, let’s talk.

My journey into software engineering began in an unexpected place: the forests of Washington state, where I was studying landscape visualization and GIS systems for my Master's in Forest Engineering. Working with complex spatial data and modeling systems taught me to think systematically about how information flows through interconnected networks—skills that would prove invaluable when I transitioned into web development. What sets me apart is my unique combination of technical depth and leadership experience. Over 15+ years, I've evolved from a hands-on engineer to someone who can architect scalable systems while building and mentoring the teams that build them. At Talogy, I've spent the last decade leading the re-engineering of our entire client portal and assessment platform using Ruby on Rails, transforming a legacy system into a modern, maintainable codebase that serves thousands of users daily. I'm passionate about the intersection of technical excellence and human collaboration. As both an engineer and manager, I've learned that the best software comes from teams where people feel empowered to do their best work. Whether I'm conducting code reviews, architecting integrations with major platforms like Workday and Greenhouse, or mentoring junior developers, I approach every challenge with the same principle: solve real problems for real people. My technical toolkit spans Ruby on Rails, SQL, React, and various AWS services, but what really drives me is the opportunity to work on systems that matter. Currently, I'm drawn to opportunities where I can contribute both my technical expertise and leadership experience to mission-driven organizations. There's something deeply satisfying about building software that enables others to succeed.

How I can help you I am a Rails and PostgreSQL expert. That means that I am very familiar doing things the rails way. There are things that you can only learn from being in a career for so fifteen years. I call it hidden knowledge. At some point you develop a sixth sense for when and how deep to test, which refactors are necessary, a set of practices for handling ActiveRecord associations. Passions I believe that an expert developer is a unique asset to a company as they can drastically change its course. I like working with startups, and I have 15 years of tips, tricks, techniques, strategies from a technical perspective as well as an business/operational perspective. Developer origin story I spent a bunch of time on linux and building out my home network. I've always had a love for this craft. I started building robots, then teaching middle and high schoolers how to build and program robots, while managing my own self hosted networks and distro-hopping linux flavors Unique skills that make me awesome I've written custom PostgreSQL extensions You'll notice with me that I am very quick on the keyboard, and between the well placed lame jokes, combined surgically precise problem solving, I have consistently told me that I am a pleasure to work with. Core Skills ⌨️ Tech skills: - Ruby / Ruby on Rails / Rspec - Javascript / Stimulus.js / Turbo / React / AlpineJS - PostgreSQL / Redis / Sidekiq / Goodjob - Heroku / Github / AWS - View components / Tailwind / Bootstrap - Neovim Ninja Startups I built and sold directmailer.io, a direct mailer marketing platform that provides modern marketing conveniences to a legacy channel. Adheres to compliance within certain verticals, and provides deep integration like you're used to in SEO. I was hired to build the core infrastructure for floridahomesteadcheck.com, a property tax analysis tool that guarantees the lowest property taxes for Florida residents. You have an idea worth building

Hi! I'm Liz 👋🏼 I'm about as full-stack 🥞 as they come. I started as a QA and automation engineer and now I'm a senior full-stack engineer focusing on Rails and React. Early on as a QA I worked on projects from writing SQL scripts to check data, to automation engineering, to React Native applications, and even helping implement Kafka instances and a team transition to Kubernetes. Then I moved on to development, mostly focusing on Rails / React stacks. I also am very comfortable working in Python. Now I've been a full stack developer for a few years, always carrying my QA mindset with me. I love exploring the ins and outs of a problem, and figuring out where I can pick it apart and expose weaknesses. I'm really great at building relationships with stakeholders, establishing trust and cooperation so that we can all move forward with a project in a very pragmatic way. Pairing with coworkers is always very enjoyable for me. I like the collaboration, but I really value the mentorship the most. Teaching juniors git has become a mainstay for me, as well as coaching them to maintain a calm mindset while debugging, encouraging them to move through issues in a systematic way. And of course I always fit in robust testing, showing folks how to create test suites and pipeline automation that will improve their workflow. Let's talk about how I can contribute to your team and stack 🙌🏻

I'm the person you call when your MVP is buckling under real-world pressure. After 14 years as a full-stack developer with a backend focus, I’ve become the "cleanup crew" teams lean on to stabilize and scale their apps. There’s something deeply satisfying about inheriting a Rails codebase held together with duct tape and good intentions, and methodically transforming it into something stable, testable, and maintainable. I’ve done this dozens of times—jumping into legacy systems with sparse tests, lots of debt, and long-gone developers. Where others see a mess, I see potential. If your app feels fragile, untested, or hard to work in, I can help turn chaos into clarity.

I am a software engineer with ten years of professional experience. I have a proven record of writing clean and maintainable code, delivering on company objectives in a timely manner, and providing effective code reviews, high-quality communication, and mentorship to team members and direct reports. My expertise lies primarily in backend API development in Python and Ruby. I am also experienced in frontend development and infrastructure management in AWS. Wherever I find myself in the stack, I always focus on delivering secure, performant solutions.

I started writing apps at 8 years old in Microsoft Access with my Dad. Then 3d games in BASIC, and finally in college PHP and MySQL web apps. Never looked back. Mid-Level/Senior Software Engineer capable of independently developing and assisting in the design of products loved by customers and associates, with many years of experience with full-stack technologies in a cloud environment, and back end technologies such as Java and C#. Great attention to detail with well-architected systems and enjoyable user interactions. Strong communicator with interpersonal savvy.

I'm Dallas Hart, a Senior Full-Stack Software Engineer with over a decade of experience building scalable, secure, and AI-integrated applications across fintech, healthcare, and e-commerce. My career has been driven by a passion for solving real-world problems through clean architecture, intelligent automation, and collaborative product development. My journey began with a love for building things that make people's lives easier — starting from early scripting projects to leading cloud-native application rollouts used by thousands. I’ve architected HIPAA-compliant health portals, PCI-secure payment platforms, and AI-powered fraud detection engines — all while optimizing for performance, reliability, and user experience. Whether I’m modernizing legacy systems or deploying microservices on AWS Lambda, I keep my focus on delivering measurable business outcomes. One of my proudest achievements was leading the development of a patient portal that reduced admin workload by 30%, while also integrating third-party AI to personalize content and drive engagement. I also designed a fraud detection system that cut chargebacks by 26% — blending ML with real-time Kafka and GraphQL. I bring a rare combination of deep technical expertise, strong product sense, and cross-functional collaboration. I thrive in environments where I can work closely with stakeholders and turn ambiguous business needs into robust systems that scale. If you're looking for someone who can own the full stack, drive AI integration, and push for engineering excellence — I’m your guy.

Senior Software Developer with 10+ years of experience delivering robust full-stack software solutions. Extensive experience developing with Ruby, (Ruby on Rails, Sinatra), Python (Django, Flask, FastAPI), and Javascript. Proven track record architecting cloud-native applications, optimizing CI/CD pipelines, and orchestrating infrastructure. Deep understanding of testing software and continuous delivery systems. Adept at leading Agile teams and modernizing legacy systems to drive scalability, performance, and speed to market.