Recrutez senior développeurs Ruby on Rails

💭 Do you have an idea that makes sense in theory, but you haven't gotten it beyond that point? An existing team that could use some direction? Perhaps a product that you've gotten to market, but you're finding it harder to add more and more customized features and keep it performing the way it should? 👋 For a little over a decade now, I've been building clean, maintainable, applications for everything from cyber security, high traffic (millions of transactions per day), credit products, custom learning platforms, to custom storefronts. 🤖 I take a pragmatic approach to development, I'll hear you out, ask some pointed questions along the way, give targeted feedback, and rinse and repeat until we've got a clear vision for your product. You'll be able to give feedback on quick builds that are put together in days / weeks rather than months. This process is called prototyping. 🏆 Prototypes are great, but they won't take into account all the nuances needed for a product to start serving customers, so from there we'll have a conversation about what your "must haves" are in order to get a product in front of customers. Anything that you'd like but isn't a "must" will be outside the scope. This step is where we build an MVP (minimum viable product). The goal here is to get your product to market as fast as possible. Paying customers are the best source of feedback you can get, but we need an MVP to get them in the system. From there we work on the features that you and your customers want most. I'll always give you straight talk on what options you have for various features, and steer you toward the most practical technology choices to handle the functionality you want, while also working within your budget. Core Services build a prototype or MVP jump into an existing application and work through a hard to build feature, or difficult bug improve the performance of your existing application improve your authentication layer (add popular authentication providers and protocols) improve your application security (evaluate and fix security holes, work through security questionnaires your clients send you) begin accepting payments in your application make your application mobile friendly (either using responsive / progressive design techniques or with a full fledged mobile app) give feedback on and improve your existing design Have an existing product? I specialize in performance enhancements to a product that feels a bit sluggish, as well as ensuring you can handle an expected jump in traffic pragmatic AI architecture. If you're not sure where to get started, I've already built out several multi-agent AI driven tool sets that go beyond having a context driven interaction with customers, and instead allow customers to handle complex tasks through text messaging and voice. Rails upgrades team augmentation

Looking for new clients who are trying to solve real pain points. If your systems aren't organized and efficient, I'd love to help you improve them. I run a small team and whether your project is big or small, we can help. We'll work together to break your project down into manageable pieces. You'll always know where we are in the process and be able to steer the ship as priorities change, through regular check-in meetings to review progress.

Hello, I am René - a Software developer (Ruby on Rails, JavaScript) living in Germany. I'm a freelance software developer since 2002 and work as backend, frontend or full stack developer for craftsmen, medium sized companies, startups or corporations. If you need support for your existing team, want to implement an idea or just need some advice about software development, just give me a call.

I'm a Software Craftsman with 20+ years of experience building from web applications, to ETL, BI, data mining solutions and even some desktop applications. I prefer to work on the web but away from the browser. I enjoy refactoring and optimization workloads and I love to explore new technologies. I can work in any technology but I have my preferences - C#, Java/Kotlin, JavaScript, Ruby and Elixir, in no particular order.

⚒️ Experienced Ruby / Rails Engineer — 🇬🇧 English Native — 🙋‍♂️ Available March 2025 — 👇 Pitch Approaching 15 years as a professional software engineer and plenty more as a hobbyist, my purpose is to ship useful and worthwhile software. I can lead your team to launch your new MVP or bring your suffering app back to life, with a razor-sharp focus on generating value. I’ll ask the stupid questions that need to be asked and work closely with you to ensure time is spent delivering what your customers need, without the fluff they don’t. I've enjoyed working with all sorts of people in all sorts of companies, building all sorts of things. That means I'm capable of working on a broad variety of problems — from rapidly building MVPs in a tiny team to iterating on planet-scale microservices within a large organisation. I probably won't be able to patent a new algorithm to reduce load times by 0.05% across the board. But I will be able to help you find and remediate bottlenecks that are demonstrably causing your customers to bounce. I won't disappear into a cave for two weeks with a feature specification and come back with a perfect implementation. I'd rather iterate and communicate; in two weeks the entire feature may have been scrapped in favour of a different value-add. Let's build the right things well, rather than the wrong things perfectly. And I won't sit idly by if the team is clearly unhappy and underperforming. Whether I need to take the reins myself or inform others, everyone deserves to work in a positive environment, conducive to their happiness. Anything less produces bad software. So that's roughly what I do. Have a nice day!

In the mid 90s, my mom's HP Pavilion was struck by lightning. Luckily, I accidentally saved a few Dragonball Z websites. Back then, you could view the source code of almost any website and copy everything there to recreate them through your browser. This is what led me to my love for web development. Hi, I'm Chris. I've been in web development professionally for over a decade. Those saved websites opened up a door into a world of problem-solving that I absolutely fell in love with. I've built everything from real-time user tracking to a key inventory management system to an events timeline to countless APIs and integrations, and somewhere in between all of those features, I found a knack for UX and UI. If you are interested in contract work, feel free to reach out!

Ruby on Rails. 5+ Years. Built and scaled web solutions with Ruby on Rails for a startup (team of 3). Tackled senior-level tasks: optimized legacy code, designed APIs under tight deadlines. Expanded into cloud infrastructure: deployed servers on AWS, Google Cloud, Digital Ocean, and Heroku. Fluent in English & Portuguese, conversational Spanish. As a Ruby on Rails developer with five years of experience, I thrive on turning ideas into seamless, user-focused web solutions. My journey kicked off with a curiosity about what powers the digital world—a spark that’s since grown into a deep passion for crafting reliable, impactful software. At a startup, I worked with a tight-knit team of three, diving into senior-level challenges head-on. From optimizing tangled legacy codebases to designing scalable APIs under tight deadlines, those high-stakes tasks sharpened my ability to adapt, innovate, and deliver, no matter the complexity. I’m more than a coder—I’m a problem solver who brings enthusiasm and precision to the table. A recent milestone I’m proud of? Expanding into cloud infrastructure. I’ve been spinning up servers on AWS, Google Cloud, Digital Ocean, and Heroku, pushing my skills beyond app development into architecting robust, high-performance environments. This rare mix of full-stack expertise and DevOps know-how lets me offer end-to-end solutions that stand out in today’s fast-paced tech landscape. What makes me unique? I pair a rock-solid Ruby on Rails foundation with an insatiable drive to learn and a talent for connecting the dots. Fluent in English and Portuguese, with conversational Spanish, I’m built to collaborate across diverse teams and cultures. I’m eager to join innovative companies where I can blend my skills with cutting-edge projects, grow alongside brilliant peers, and tackle challenges others might miss. Whether it’s unraveling backend puzzles or deploying cloud-native systems, I’m the developer who gets it done—and then pushes it further.

I'm a Full Stack Software Engineer with 9+ years of professional experience. While most of my experience has been in Ruby on Rails and Javascript, I've also shipped production-level projects in many other languages including Elixir, C#, Java, Python, and more! A few projects that I'm most proud of include: - Built a live feed that streamed 10,000+ Cryptocurrency prices per second to trading algorithms. - Created an open-source Ruby gem to perform technical analysis on stock price data sets. - Improve the performance and response time of monolithic Rails projects by 80%+ using edge caching. While it's not technically a project, I'm also proud of my experience in mentoring junior engineers. Hobbies and interests - Golf - Cars/motorsports - Dogs (I'm a fur father to a 4-year-old, rescued Catahoula mix)

Senior software developer with over 22 years of experience building mobile and web apps, with over 12 years building on Rails. To me Rails is more than just a software framework, it's also a development philosophy. The Rails principles like convention over configuration, separation of concerns, keeping it simple, and don't repeat yourself, help create cleaner and more scaleable projects. I'm big advocate for self documenting code, not reinventing the wheel, keeping things consistent, and designing with constraints, always striving for writing very readable and maintainable code. I also like to follow best practises including using trusted gems like Devise for authentication and Cancancan for authorization, and as well as new frameworks like Stimulus, Hotwire and StimulusReflex.

Seasoned code wrangler with over a decade in Ruby on Rails and a past life as a social worker and policy researcher. I've got a knack for translating geek speak for humans and wrangling stakeholder needs into delighted users and maintainable code. Looking to land in a place where code meets impact. Full stack developer that has spent over a decade in the Ruby/Rails ecosystem. I lean ops to backend, but I can get in there and wrangle JS components and CSS if need be. I often wear at least a little bit of a product manager hat, have been a team lead on large projects, and I even try to remember to write documentation and technical briefs. I'm longwinded in slack, shy in person, didactic and friendly in code reviews, and occasionally down a rabbithole. Loves: Wrangling weird bugs and annoying APIs, refactoring, clear code (for the humans) and good tests (for the robots), figuring out the best places to deliver maximum impact and shipping quickly, teaching myself new things, compassionate communication and collaboration with multiple stockholders, making weird things happen in the CI pipeline Special superpowers: T-shaped generalist that still geeks out on learning new things, sniffing out something that isn't a problem yet but definitely will be (and I don't mean premature optimization), care a lot about readable code. Worked as a social worker for a decade, there's more soft skills than people might think in getting software out the door. Not so loves: JS in general, jerks, arrogance, watching junior developers not get the support they need and thinking it is their fault, refreshing staging for an hour wondering why my debugger isn't getting hit. -- Have worked in startups at all stages of their life cycle as both an introverted grumpy solo developer and team leader, helped make product decisions, mentored other developers, deleted prod a few times, etc. I chafe a bit at schedules, but occasionally I'll figure out a big that would have been a big problem in the future at 3am and just fix it. Love fixing those things. I can meeting during normal human hours though. -- Open to short and long term contracts and FTE for the right fit. Prefer chill flat organizations where everyone likes and respects each other and just gets stuff done. I've shipped features faster at those organizations than any that were focused on relentless hustle. -- Tell me why you believe in your tech and I'll tell you about one of my weird side projects like a Led Zeppelin button or a confessional that floats in the air. -- Have PhD level statistics classes buried in my brain somewhere, know my way around python and some data analysis, have built ETL pipelines - if it has to be done, I'll try to figure out a way to get it done. And the longer you hang around this world, you realize the most important programming language is being able to talk to people in kind and useful ways. -- Senior enough to know that sometimes it's the code you don't write that solves the problem ;) Junior enough to still get excited every time I make LEDs blink with magic words.