Hire senior freelance Ruby on Rails developers

Hi, I’m a Senior Ruby on Rails dev (5+ years), currently working on warehouse/order management systems at Anchanto. If you’re looking to build or scale a Rails-based product, I can help with API design, optimization, and integrations. Let’s connect!

I'm a Software Engineer with more than 10 years of experience, primarily focused on Web Development. My expertise lies in building robust applications with Ruby on Rails, and I also enjoy working on projects involving Node.js and React. Beyond web technologies, I'm passionate about the ever-evolving fields of Artificial Intelligence (AI), Machine Learning (ML), and the principles of good Software Architecture. I'm always eager to learn and explore new challenges in these areas.

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 a senior developer and product strategist with 10+ years building custom software, mostly with Ruby on Rails. I turn complex problems into fast, scalable solutions—and I always build with the end user (and the business) in mind. I got into dev through entrepreneurship—building tools to run my own businesses. That mindset never left. I think like a founder, move fast, and care deeply about results. Lately, I’ve been focused on integrating AI into products: • Automating workflows with tools like OpenAI, Make.com, and LangChain • Building AI-powered features that enhance user experience and drive growth • Helping SaaS teams use AI to scale smarter without adding headcount I’ve led everything from zero-to-one builds to product turnarounds, working closely with founders and small teams. I thrive in fast-moving environments where priorities shift and speed matters. When I’m not building software, I’m in the mountains snowboarding, hiking, or chasing the next great view. Let’s connect if you need someone who can think strategically, code fast, and actually ship.

I've been a software engineer and leader for 18 years, with a focus on Ruby on Rails and full-stack development for the last 13. I’ve lead teams of 30+ as a staff and Principal engineer, and as a people manager. I’m an expert in web, mobile, api, service-oriented and micro-services architectures, data pipelines, AI and voice-enabled applications. In addition to Rails, I’m also an expert in React, React Native and JavaScript. I’ve recently owned projects in Python, Django, Typescript, Swift for IOS, Kotlin for Android, and can pick up any language/ framework with a few weeks practice. I offer hands-on development, team leadership, code reviews, team training and up-leveling, as well as UI/UX design and research, project and product management, strategic planning and roadmapping, and compliance for HIPPA and SOC. I’m available for hourly contact rates, or monthly support plans.

I'm Veteran Full-Stack Ruby on Rails Developer with ReactJS expertise. Proficient in Hotwire, Turbo, Stimulus, JavaScript, AWS, Github, Heroku, and various other technologies. Skilled in self-management for independent projects and a collaborative team player. I have worked in different domains like healthcare, legal, security, construction, social media and others. I'm passionate about coding, especially in Ruby with the magic of Rails making things smooth sailing. I've built plenty of projects, and now I'm excited about combining Ruby on Rails with AI. I'm skilled with Git, RSpec, and handling databases. I also know my way around frontend tech like ReactJS and AngularJS, as well as integrating APIs. I've led small developer teams back home, using tools like GitHub, GitLab, Notion and Linear. I'm fluent in Gujarati, English, and Hindi, making communication a breeze. As a remote developer, I'm here to turn your ideas into reality. Whether it's working solo or coordinating a team, count me in to get the job done. I can provide a wide range of services that are designed to attract attention and cater to the most searched for needs. Here are some examples of the services I offer. -> Web application development -> Font-end UI/UX development -> Back-end REST APIs development -> Application deployments on cloud -> Version upgrades -> Technical lead for teams -> Application maintenance or support -> Technical consultation -> Project management -> Problem solving -> Small project to large (feature, enhancement, bug, issues)

I started doing Ruby on Rails programming for a project management system for an architect company in 2005. Since then I've worked with a wide span of clients, always fixing some business process with a dash of Ruby. I work full stack, because I like to see the impact on the workflow for real people. I'm experienced in getting data to and from whatever is wanted or needed. I've done Ruby for accounting, business controller, product management, publishing, open banking, web shop. I'm looking for teamwork, am passionate about business processes and can help with long term and strategic thinking.

A Full stack Engineer with over 10+ years of experience. Throughout my career, I've worked on a mixture of products for a variety of industries and clients, assisting them in the development of their platforms from the ground up, from concept to production. I enjoy solving problems and creating solutions that help customers. A career built in startups and 10+ products in B2C, B2B, and SaaS.

8+ Years of experience | Ruby on Rails specialist | Passionate about testing Checkout my portfolio here https://www.karlheitmann.com/ I've studied electronic engineering, specialty in computer science and sub specialty in physics. I am a self-taught full stack developer. I've learned to code on QBasic when I was a kid, at the end of the 90's, and I've been working in software development since 2014, most of the time working in Ruby on Rails, the sum adds 8+ years of experience in RoR. Since the first time I've started working with Rails I've worked following a TDD approach. My experience tells me that's the best way to avoid bugs. I've used RSpec all along my journey. My latest discovery is the best way to enrich my vocabulary in any programming language is by reading other people's code. That's the reason why I'm hunting issues in github, I've made several contributions to many different open source projects. My last PR is a fix for RSpec::Support::Differ class: I've found a bug when you compare two different hash objects and the expected value contains an "anything" fuzzy matcher, it adds noise to the output of the differ. My PR fixes that issue: https://github.com/rspec/rspec-support/pull/599 I have noticed the web is always consuming more and more memory ram. That's the reason why I've focused my efforts on my previous jobs to optimize slow web pages and optimize as much SQL as I can. I helped my last client to reduce in half the memory ram consumption measured on his Heroku metrics. These optimizations helped him to save money on Heroku. I am learning Rust and I have built many tools like rg_explorer to help me find what I need in big projects. I want to become proficient in Rust because I have hope in the future WASM may become something common in webapps, because I think that may be a good candidate to reduce the amount of memory ram consumed by web browsers. I am a versatile software engineer because I've used many programming languages in the past: Python, Rust, Node.js (including React.js and Vue.js). I have found many of the activities mentioned above are really boring for many people. It's odd that I enjoy doing them so much. That's why I think I like to do boring stuff...

As a highly skilled Full Stack React and Ruby on Rails developer with extensive experience in a wide range of related technologies, including TypeScript, Next.js, Nest.js, Graphql Apollo, Redux, and more, I have built a strong foundation in coding through online platforms such as Freecodecamp, Codecademy, and Edx. Over the past 6 years, I have honed my skills and gained valuable experience building high-quality web applications for clients. I have a proven track record of delivering complex projects on time and within budget, consistently meeting or exceeding client expectations. I have increased test coverage up to 90%, resulting in fewer bugs and faster bug detection and resolution. Additionally, I have managed teams of developers and collaborated with stakeholders to ensure project success, building productive relationships with clients that have led to repeat business and referrals. In addition to my technical skills, I am committed to continuous learning and professional development. I have completed courses and earned certifications in related technologies, including AWS, Docker, and DevOps. I am always seeking out new challenges and opportunities to expand my knowledge and skill set. If you are looking for a self-taught Full Stack React and Ruby on Rails engineer with a proven track record of delivering high-quality results, please feel free to contact me at ikram.softwaredev@gmail.com. I am excited about the opportunity to leverage my skills and experience to help your organization achieve its goals.