Hire senior freelance Ruby on Rails developers in United States

I have been developing for the web since 2007 and with Ruby on Rails since 2012. I am skilled in backend development as well as server-side rendered HTML. I have worked on a variety of projects from small scale to large legacy for a variety of different clients and employers. I have worked for startups, corporations and non-profits. I have experience working as part of team using agile methodologies, as well as working as a solo developer directly with clients. I am passionate about continuing my own education as a developer as well as helping others learn. I was the organizer of the Ruby meetup in Ann Arbor for over five years. I have also spoken at numerous conferences and user groups.

With over 16 years of professional Ruby on Rails experience and leadership at companies like Shopify, Apple, Intuit, as well as successful startups, I bring extensive knowledge, with a reputation for delivering high quality code and value to the teams I am a part of. I've led teams on large-scale systems and have a proven track record of successful cross-organizational collaboration. My focus has always been on creating sustainable growth, both for the systems I work on and for the teams I lead. My leadership approach is deeply rooted in empathy and shared code ownership. I continuously strive for code quality and maintainability, while always balancing the business outcomes. I'm very comfortable with: - MiniTest & Rspec - Haml 🤗 - Hotwire - Stimulus - Turbo - Bootstrap - TailwindCSS & Tailwind UI - View Component - Caching - Queuing - Mentoring - AWS - PostgreSQL I believe in the monolith. <3

From the moment I wrote my first lines of code, I was drawn to the power of solving real-world problems through technology. Over the past 9+ years, I’ve honed my expertise in Ruby on Rails, Node.js, Python, Go, and React, building scalable, high-performance applications across FinTech, SaaS, and Healthcare industries. My passion lies in crafting robust backend systems, secure APIs, and seamless front-end experiences, all while optimizing for performance and maintainability. One of my proudest achievements was leading the migration of a monolithic Rails application to a microservices-based architecture using Go, Node.js, and GraphQL. By carefully refactoring services, implementing event-driven patterns with Kafka, and optimizing database queries, we cut response times by 60% and improved system reliability. This experience reinforced my belief that understanding the trade-offs of different technologies is key to building resilient applications. Beyond writing code, I thrive on mentoring engineers, leading technical discussions, and driving best practices in CI/CD, cloud-native development (AWS, Kubernetes, Terraform), and DevOps automation. I love tackling complex authentication challenges (OAuth, JWT, SAML) and designing secure, scalable APIs that empower businesses to move faster. At my core, I’m an engineer who bridges the gap between backend, frontend, and infrastructure—someone who doesn’t just build software but also optimizes it, secures it, and scales it. Whether it's refactoring legacy Rails applications, designing real-time systems with WebSockets, or deploying Go-based microservices, I bring a holistic, problem-solving mindset to every project.

Hello! I am a Rails and frontend developer who has worked at a variety of small companies and startups in various industries. This means I am a versatile problem solver who focuses on getting to the core of business problems before implementing solutions. In addition, I love working with people and am an engaged and helpful teammate. Recently, I have been working for a client on upgrading older Rails versions, implementing enhanced security mechanisms using devise and MFA, and of course building out features (e.g. billing). I have some strong AWS knowledge as well. I look forward to working with you!

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 🙌🏻

Hi, I'm Mitch! I've been a Rails developer since 2012. Throughout my career, I've brought my unique perspective and skills to each project I've worked on. I love delving into legacy code, finding elusive bugs, upgrading systems, and documenting codebases. I take pride in my ability to leave a project better than I found it and in a place that can be easily picked up by another developer. I have been self-employed for 5 years and work well both independently and on a team. Being self employed has broadened my skillet more than I could have imagined, since I'm constantly being thrown into new and unfamiliar situations. Throw me into yours next!

I'm a software engineer with 14+ years experience in: - Application design (requirements and spec definition and agreement, domain-driven design, object-oriented design, data structure management, ETL processes, etc.) - Application engineering (Rails, NodeJS, React/Vue, frontend) - Server administration (Linux, Nginx, Apache, etc.) - Containerization (Kubernetes, EKS, Docker) - Cloud infrastructure (AWS, GCP, Terraform) - Cloud and infrastructure security (CPI-810, etc.) - Compliance (CCPA, GDPA, CPNI, etc.) At my last role, I was lead engineer on a team of five that developed and maintained an LMS system used internally at Verizon by hundreds of thousands of users. I'm funny, smart, a good listener and a good teacher. I like working in a team and getting things done. I like finding processes and ways to work that make things more efficient, fun, and engaging. I just left a job at Verizon voluntarily and am open to to hourly or project-based work.

Ken is a seasoned software developer specializing in Ruby on Rails since 2018 and React since 2022, building high-quality applications with a strong emphasis on performance and scalability. Before transitioning into software development, Ken built a solid foundation in customer engineering at Boeing Launch Services and FARO Technologies. This experience ingrained in him a deep appreciation for customer needs, which now drives his approach to software design and development. Ken takes a customer-first approach while maintaining the focus required to deliver complex features on time. He is a strong advocate for clear communication, ensuring that potential roadblocks and critical details are addressed proactively—well before they become costly issues. With a passion for efficiency and problem-solving, Ken asks the right questions early in the discovery phase to uncover requirements gaps and resolve bottlenecks. His proactive nature, strong extraversion, and ability to navigate cross-functional collaboration set him apart, enabling him to keep projects on track even in complex environments. By applying rigorous due diligence before a project launches, Ken minimizes risks and maximizes efficiency. His "can-do" attitude and commitment to continuous learning make him a valuable asset to any technical team.

The first programming book I read was "Learn Ruby the Hard Way" by Zed Shaw. That, coupled with an interest in graphic design seemed like a gateway into a very enjoyable career where I could be logical and creative! Shortly after, I joined a bootcamp in 2016. I've worked with quite a few frameworks and libraries since 2016. Here's what I've learned: - Ruby is super fun, Rails is not dead, convention-over-configuration is my preference whenever possible. - JavaScript is cool but the front-end world can be exhausting; too much reinventing the wheel and forgetting about web fundamentals. - I enjoy CSS a lot. - Hotwire and Stimulus are a very cool approach to efficiently providing a user with a SPA-like experience - I'm proficient in React but like to keep it simple, sustainable, composable. I strive to find the appropriate balance of simplicity and complexity in order to: - meet the project needs - be considerate of fellow developers who will need to read, understand, work with the code I write - enable Junior devs to step into the codebase and understand/mimic/extend the codebase. Unique Traits: - Trilingual (English, Spanish, French) - Education background (I can mentor Junior devs) Positive Traits: - Passionate about good quality - Tenacious Personal focus: - I've been focused on diving deeper into the Rails ecosystem and my aim is to find a role with a company using Rails + Hotwire, or Rails + React. - Docker NOTE: The link "Website" link in my bio is Github. I'm currently redoing some portfolio projects.

Led feature development and production issue resolution for a group payments and event management platform, implementing both frontend and backend solutions to ensure a seamless, responsive, and user-friendly experience. Developed and maintained backend services using Ruby on Rails, managing business logic and optimizing performance to support mobile and web platforms. Built and optimized responsive user interfaces using React, ensuring consistent performance and cross-device compatibility for web applications. Collaborated on Git-based version control, ensuring efficient code management, continuous deployment, and integration in an agile development environment. Technologies: Ruby on Rails, React, Next.js, TypeScript, Tailwind, React Native, AWS, Git