Hire principal / staff Ruby on Rails developers

Experienced Software Architect with a demonstrated history of working in the Energy and Advertising industry. Skilled in Ruby on Rails, fluent in Dutch and English. Strong research professional with a Master of Science (MSc) in Systems Engineering, Policy Analysis and Management from Delft University of Technology with a focus on Sustainable Energy.

Senior engineer with experience in both greenfield and legacy codebases. I believe that developer happiness and productivity are doubly linked and strive to optimize for both. I'm at my best when I can take ownership of high-stakes features and work with business units to understand the technical and business tradeoffs. Collaborative, no-ego teams are my favorite to foster. Most recently I've been working in the fintech industry on a legacy monolith application with Hotwire and ViewComponents. I've worked successfully with both US and overseas development teams and enjoy providing a multiplicative effect on my colleagues.

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!

Senior software engineer with over 10 years of experience as a remote freelancer. My educational background includes an MSc 2:1 in computer science and applied mathematics engineering from ENSEEIHT (Toulouse, France) in 2009. I then worked for 2 years as a frontend developer at a startup in London and transitioned to backend work in 2013. Specializing in web application development, I have undertaken projects for companies such as Carrefour, L'Oréal, Cocolis, Epicery, and Alerti. My work has encompassed backend development, data engineering, code and database performance improvement, e-commerce platform customization and logistics, payment system integration, API creation, crawlers, technical documentation, and testing. Passionate about data manipulation and rendering them to users and stakeholders in a more meaningful way, I am currently expanding my skills in AI/ML and neural networks through CNRS fidle formation to explore how I could apply and offer these services to my clients. Recent milestones and accomplishments include: Migrating the payment system from Adyen to Stripe for Epicery Migrating the frontend from Vue to Hotwire for Epicery Developing a geolocalized matching algorithm between carriers and packages for Cocolis Fields of expertise: E-commerce solutions with Solidus/Spree open-source framework Data processing and visualization with Business Intelligence tools for reporting Integration of payment system providers Integration of third-party APIs Database design and performance optimization Frontend performance optimization Crawling and scraping Technical audits Testing, documentation, CI/CD tools Experience with the following tools: Languages: Ruby, Typescript, JavaScript, Node.js, Ruby on Rails Platforms: AWS, Google Cloud Platform, Render, Heroku Frontend: React, Vue.js, Hotwire, Angular, HTML/CSS, Alpine.js, HTMX, Astro Payment providers: Stripe, Mangopay, Adyen, PayPal Data viz: Amazon QuickSight, Superset, Tableau Backend tools: Solidus open-source e-commerce solution, New Relic, Elasticsearch, PostgreSQL, Amazon S3, etc. CI/CD Tools: GitHub CI, CircleCI Fluent in French, English, Spanish.

I'm Richa Bhardwaj from Delhi, India. For the past 15 years, I’ve been building web and mobile solutions, working with clients from various corners of the globe. I’ve got a decade of remote work expertise, and I am a natural problem-solver. I’ve worked on several greenfield projects. I have a knack for picking up new technologies quickly. Even while working on tight deadlines, I’ve managed to learn and apply technologies, successfully bringing the projects to life. I’ve used Ruby on Rails, Node.js, and Python on the backend to build server-side solutions. On the frontend, I’ve worked with React, React Native, and Vue. I excel in async communication and making informed decisions regarding architecture, design, and other areas of the software development process.

I'm an experienced Full-Stack Ruby on Rails Developer. Proficient in Hotwire, Turbo, Stimulus, JavaScript, Python, Kotlin, AWS, Github, Heroku, and various other technologies. Skilled in self-management for independent projects and good as a collaborative team player. I have worked in healthcare, digital identity, security, social media, and others. I have 15+ years of development and management experience, including my work for big Tech companies (EU / US). As a remote engineer, I'm here to turn your ideas into reality. Whether working solo or coordinating a team, count me in to get the job done. What I Can Do for You: Software Architecture: I can design robust, scalable architectures tailored to your project’s needs. Tech Consultancy: I provide strategic guidance to overcome technical challenges and align your technology with your business objectives. Tech Roadmap Planning: Let’s create a clear and actionable roadmap to achieve your technology goals. Tech Radar Creation: I’ll help you identify, assess, and track technologies to keep your tech stack future-ready. Boost Performance: I’ll help you identify what’s slowing down your app and get it running fast and smoothly. Lead Refactoring: If your codebase has become hard to manage, I can lead the way in cleaning it up and making it scalable and maintainable. Breathe Life into Legacy Systems: Stuck with an old app that’s becoming a headache? I specialize in bringing legacy code back to life. Smooth Migrations: I'll ensure the transition is seamless with minimal disruption, whether you’re moving to a new version or an entirely new system. Customised Rails Workshops: I can onboard your team quickly to get essential knowledge in Ruby and Ruby on Rails with workshops (onsite in Hamburg, Germany, or Remote) tailored to your business needs. If you're facing challenges with your Rails project or looking to improve things under the hood, I’d love to help. Let’s connect and see how we can get your system running at its best! Cheers! Andrey

I've been making software since I was a kid. I enjoy designing solutions to complex problems and building abstraction layers that make difficult problems more comprehensible. I've led teams of developers, and I've been a Director of Engineering responsible for a team building a hardware and software product. I've been a Technical Cofounder of a startup building a mobile app. I excel at communication with technical and non-technical stakeholders. In the Ruby ecosystem, I've done a lot to build developer happiness for my teams. I've upgraded Rails and Ruby in many legacy projects. On the frontend I've build iOS apps in Swift and React apps in Typescript. On the API layer I've worked a lot with GraphQL in addition to classic REST where I cut my teeth.

Senior Rails developer with generalist skillset. I've been developing Rails applications since the weekend of the first public release of Rails and am the author of 2 Ruby on Rails books. I prefer to work in small teams where I can be involved in all aspects of the application development process and have rapidly created entire applications for both small venture-backed companies and multinationals alike. Have worked as CTO at two startups, building development teams and designing the architecture for the platforms. Rails is my preferred framework, but I also develop applications in Elixir Phoenix with LiveView. While most project I have worked on have been built from-scratch, I have worked on large-scale projects built with Bullet Train and Jumpstart Pro.

With over 10 years of experience in the tech industry, my core competencies lie in developing scalable solutions and leading technical projects, exemplified in my previous role at Amazon. During my tenure at Amazon, our team developed a distributed healthcare service that significantly enhances prescription acquisition. My mission is to leverage technology to streamline healthcare processes, making them more accessible and efficient. I have experience working in both a startup and a corporation. PillPack by Amazon Pharmacy ● Led multiple projects for a team of 7-8 engineers working on microservices, written in Ruby on Rails to a workflow engine written using Camunda, all built on AWS cloud infrastructure. ● Initiated and managed a project to unify several platforms that pharmacy agents use into one core service, simplifying the number of tools from nine to five. ● Oversaw a project to implement a specialized process for Amazon Pharmacy after Amazon's acquisition of PillPack, including building a Camunda workflow engine. ● Built a new distributed and scalable service that manages the process of acquiring prescriptions from healthcare providers and other pharmacies, including a CI/CD pipeline in AWS. ● Created an integration test suite of own initiative for the system, which is being used extensively during beta testing as evidence for production.

I love helping people leverage the power of data and software. I've had the privilege of doing so in various roles for over 20 years. My specialty is working with stakeholders to develop extensible scheduling, workflow, and form systems. I also love teaching and mentoring. I'm available for freelance or contract work. Hard problems with no clear cut solution are the most interesting to me. I may also be able to help you get projects started, complete stalled projects, and coach teams on things like system design, and dealing with the technical challenges around modeling sparsely structured data (especially in healthcare and clinical research).