Hire principal / staff Ruby on Rails developers

Full Stack Software Engineer with over a decade of hands-on experience in full-stack development, specializing in Ruby on Rails. Proficient in managing end-to-end software solutions from backend to frontend and mobile applications, with a strong focus on scalable distributed systems including serverless architectures (AWS Lambda). As a Full Stack and Tech Lead at current small company Brightree, I work on different languages programming and tech stacks. My In-progress demos: https://github.com/nctruong/glassdoor Ruby on Rails GraphQL Elasticsearch NextJS https://github.com/nctruong/shopee NodeJS Kubernetes Microservices https://github.com/nctruong/smartnote NestJS & NextJS

I’m a senior full-stack Ruby on Rails developer with 8+ years shipping production-grade software — from bootstrapped MVPs to fully-fledged SaaS platforms. I thrive in startup environments where shipping fast, clean code is key, and where product thinking is just as important as engineering chops. Rails is my weapon of choice — API-first apps, Hotwire interactivity, background jobs, payments, and complex business logic? All handled. I build with intention, scalability, and UX in mind. Beyond code, I’ve co-founded multiple products, run lean experiments, managed integrations with payment gateways (M-Pesa, Stripe, Paystack, Circle), and built systems used by thousands in Kenya and beyond. I speak startup.

I’m a full-stack web developer with experience in JavaScript and Ruby. I have 15 years of experience working with projects in different industries, from digital campaigns to HR, e-commerce and SaaS products. In my current role I led the development of many modules of the Applications & Leasing system, with a strong dedication in delivering robust solutions that could be extended to support other use cases. Some of these modules include an application template builder, document template builder, lease renewal score and document signing. This experience helped me to expand my ability to connect the dots by understanding each department’s needs and how data flows through the different actors in the company.

I didn’t start out planning to be a developer—but solving problems though applied technology pulled me in. What began with scripting solutions for tedious workflows turned into building full-scale platforms used by thousands. Today, I’m a full-stack developer and technical founder with a deep understanding of both code and the business logic behind it. I have worked across both public and private sectors, and in industries ranging from Logistics and Aviation, to Retail and Education. My early career experience as a solutions architect reinforced my customer and user concentric approach. What sets me apart isn’t just the code I write—it's my ability to understand what users actually need and deliver scalable, elegant solutions that exceed expectations.

I’m a veteran Ruby on Rails developer with 10+ years building Rails apps—ranging from greenfield to legacy rescue. I help small teams move faster, clean up codebases, and ship features with confidence. Fluent in Hotwire (Turbo + Stimulus), RESTful APIs, PostgreSQL, and scalable architecture. Also experienced in mentoring devs, improving performance, and navigating compliance (HIPAA, PCI, ISO27001). Currently open for ~10 hrs/week of contract work—hands-on coding, tech guidance, or both.

A passionate Ruby on Rails developer, author of i Love Ruby https://i-love-ruby.gitlab.io/ I am a person who can build projects on a turn key basis. I completely agree with 37Signals philosophy of developing software. I agree with Rails 100% including the way it enables us to build modern web apps with Hotwire. I am constantly looking for ways to develop applications with perfection and with less of cognitive load for developers. I love to build high performance teams for your business, and keep them mentally healthy so that we have an honest work place where people are free to tell facts. Follow me code here https://gitlab.com/mindaslab My ruby book https://i-love-ruby.gitlab.io/ My current hobby Rails project: https://yu7.in/ Companies I serve now as freelancer: Healthicity https://www.healthicity.com/home Numerical Works https://numerical.works South Indian Safari https://southindiansafari.com/ (yet to launch) My previous projects: FINavigator https://fi-navigator.com/ Optoro https://en.wikipedia.org/wiki/Optoro Tech Architect for Rails teams in Guidehouse https://guidehouse.com/

I’ve always been fascinated by the intersection of creativity and technology. My coding journey began when I discovered how a few lines of code could transform an idea into a fully functioning application. From that point on, I was hooked: I poured countless hours into experimenting with everything from Ruby on Rails to more modern JavaScript frameworks. Over the years, I’ve refined my skills and found my passion in building clean, maintainable systems that put user experience first. One of my proudest earliest accomplishments involved leading a small team to develop a custom internal tool that automated a tedious data-entry process. Seeing the hours of manual work drop to just a few minutes was incredibly rewarding—it reminded me why I love being a developer in the first place. I’m constantly seeking new ways to grow: whether that’s diving into emerging technologies, improving my testing strategies, or exploring new coding paradigms, I believe there’s always more to learn. Above all, I thrive on solving tricky problems in ways that others might not have considered. I love collaborating with designers, project managers, and fellow developers to turn concepts into polished products. I bring a unique blend of empathy, curiosity, leadership and technical expertise that helps me bridge communication gaps and ensure every project is set up for success. Helping teams build something truly meaningful is what drives me—and I’m excited for what comes next.

I'm a full-stack Rails developer with experience building robust, scalable products, whether as a Ruby monolith or with TypeScript/ReactJS frontends. I've been working with Rails for over 10 years (since version 3.x) and have specialised in creating and maintaining codebases that are easy for teams to read, understand, and maintain. Key to those goals are: using standardised code styles (ensuring RuboCop and the team's practices are perfectly aligned) writing well-structured, easy-to-understand and fast tests constructive and collaborative code reviews ensuring documentation, from git histories to READMEs and other materials (online and offline) records useful, meaningful information that can be easily kept up to date and in sync with any code changes I've recently been adding GraphQL to my skill set, which also includes PostgreSQL, ElasticSearch, Redis and other languages (Swift, PHP, JavaScript, and more). On the front end, I have experience with both Rails' native toolset and ReactJS, Next.js, and React Native. I also have experience with platform-native toolsets, such as SwiftUI, to deliver applications that feel intrinsically part of the user’s mobile experience. I've worked on projects of various sizes, from scheduling and booking software for a major tech training company to systems that enable TV distributors to sell thousands of hours of programming worldwide. Ideally, I'm looking to work on products with which I can feel personally invested – an exciting product or tech-for-good project would definitely suit me better than a fintech role.

I'm Patrick, a backend developer with over 17 years of hands-on experience building web apps with Ruby on Rails—across startups, NGOs, and large enterprises alike. From launching social platforms in Thailand to building insurance portals in Germany, I've worn many hats: freelancer, CTO, and senior engineer. What drives me is crafting robust, maintainable systems that solve real-world problems. I’ve worked on e-commerce shops, benefit platforms, mobile apps, and even refugee registration systems in South Sudan—always with a focus on clean architecture, fast iterations, and reliable delivery. I thrive in complex environments where others might hesitate: legacy codebases, scaling systems, domain-driven design, or integrating with obscure APIs. If your team needs someone to bring order to the chaos—or just ship that one gnarly feature no one wants to touch—I’m your guy. I'm currently based in Hamburg, but remote-friendly and happy to plug into teams anywhere Rails is loved.

I am passionate about helping first-time founders navigate the complex world of software development. My approach focuses on discovering, planning and building the MVP that lets you to validate your concept, raise money, or get your first paying customers quickly while assisting you with establishing the long-term roadmap of your product. My 25 years of experience in software development span three countries and fields as varied as online banking, text messaging, politics, logistics, e-commerce and sports facility management. I've been technical lead, co-founder, CTO and independent consultant, building and shipping product every day by myself or with small teams, from one-person shops to VC-backed scale-ups with successful IPOs and private exits. What sets me apart is my commitment to making myself replaceable. I create maintainable, well-documented code as well as automated testing, deployment and monitoring practices that make it easy to bring development and operations in-house when you’re ready. My goal is to provide maximum value at every stage while setting you up for independence and long-term success. My preferred technical stack is Ruby on Rails (with Hotwire Native for mobile), which empowers me to build and ship fully functional, well-tested and feature-rich apps within a few weeks (or sometimes days).