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Senior Tech Lead | Ruby on Rails expert | 20 years XP | Test addict | Performance lover

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With over two decades of experience in software/application development, I've cultivated an expertise that spans multiple technologies and industries. Beginning with Java, I honed my skills within the heart of France's major banks and industries, mastering the foundations of software architecture. A decade later, my passion led me to Ruby, ushering in a new era of innovation. From dynamic startups like HelloPrêt to industry giants such as Doctolib, EDF, and Smart Pension, I've thrived in diverse environments, leveraging Ruby's flexibility to deliver exceptional solutions. Mentoring: Throughout my journey, I've embraced the role of mentor, guiding junior developers to unlock their potential and fostering a culture of collaboration and excellence. By offering advice and assistance, I've not only enhanced team productivity but also cultivated a cohesive and supportive work environment. Test addict: Testing isn't just a task – it's a philosophy that I've embraced since my inaugural professional experience in 2004. From unit tests to performance evaluations, I've championed the importance of comprehensive testing, recognizing its pivotal role in crafting resilient, bug-free software. Beyond mere functionality, tests empower us to build applications that are not just robust, but also easily maintainable. Performance lover: I'm passionate about performance optimization. Whether it's identifying and fixing N+1 queries, optimizing database indexes, or fine-tuning JVM settings, I love diving into performance challenges. Each problem is unique, and I enjoy finding tailored solutions to ensure systems run smoothly and efficiently.

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

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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: 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, and Spanish.