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CTO, Senior Full Stack Dev | RoR and Js/Typescript Expert | Remote

High response rate
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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.

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Rails dev (15+ years) | Backend Engineer | Staff Engineer at your disposal.

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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

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Senior engineer with 10+ years in Rails

High response rate

🇬🇧 English Native — 🙋‍♂️ Available — Seasoned as an engineer for over 13 years, 10 of which being in Ruby and Rails, my focus is on shipping 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 excellently. And I won't sit idly by if the team is clearly unhappy and underperforming. Whether I need to take the reigns 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. If you really haven't had enough of me, check out my more personal about page — https://schembri.me/about/ Have a nice day!

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