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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 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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Senior engineer with 8+ years in Rails

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⚒️ Senior Ruby / Rails Engineer — 🇬🇧 English Native — 🙋‍♂️ Available October 2024 — 👇 Pitch I’m a seasoned software engineer, bringing to the table more than a decade of deep experience with Ruby on Rails. My focus is on shipping useful and worthwhile software. I can lead your team to launch or fix up your legacy app, 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. Whew, that's my value proposition. Now we can breathe. Ordinarily I would prefer to introduce myself as a living, breathing human, but this is a careers site and so that info goes up there, I suppose. Let's tone it down. I'm very down-to-earth, really. I've enjoyed working with all sorts of people in all sorts of companies, building all sorts of things. Throughout that I've tried to distill what it is that sets me — little old Jamie — apart from other engineers. I am not the rockstar engineer that spends half a year patenting a new algorithm which reduces load times by 0.05%. Impressive, but I don't work at places that need that skillset. I'm not the person that works 80-hour weeks and spends whatever is left practicing data structures and algorithms on LeetCode to get a leg up on the competition. The dedication is commendable, but I also want to live my life. And I'm not the guy who joins a massive company and calmly maintains the same little piece of code which no one uses until retirement. I almost wish I was, but I need something more. So what are my superpowers? Nothing too special, I'd have thought, and yet I've seen the lack of these being the downfall of otherwise excellent engineers. I have a sharp sense of what needs to be done in order to deliver value, which may not be what clients think needs doing, or what engineers jump with glee to start working on. I'm very good at getting along with and putting people at ease. I don't take myself too seriously and have a sense of humour, which apparently is valuable. So there you go: very much soft skills. A little strange for a computer programmer, isn't it? Perhaps it's the scarcity of said skills that makes the complete package a little less common; but it's these skills that give me the ability to hone in on building the right things well, as opposed to the wrong things excellently. Well, that's enough of that. If you really haven't had enough of me, check out my more personal about page — https://schembri.me/about/

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So, I have a horse ranch

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Hi! I'm Josh. I'm a self-taught, product-focused, manager of one, and former serial founder actively in founder recovery. I had my first website when I was 11, and I’ve lost track of the count since. My track record includes taking ideas at inception and bringing them to life, and sometimes scaling them to millions of requests per minute. Though I never drank the chemicals beneath the sink, as a child I stuck a fork in a light socket three times because I was curious (sorry mom). As an adult I stick my nose in people’s businesses to find inefficiencies to make them more efficient with software — also because I’m curious. And no, I haven’t tried a Tide Pod. Opening with a fun fact I am a part owner in a horse ranch in Mexico despite not speaking a lick of spanish. During COVID I was traveling a bit and wanted to go horseback riding. To the surprise of nobody, I had to make a lot of phone calls to schedule a ride (ew). After a few conversations I learned that this particular ranch was doing pretty poorly financially because of the pandemic. I got involved and now we're up 410% from pre-pandemic levels. Everything else, if I have your attention I've been working with Rails daily for over ten years. For the latter half of the last decade, I've found myself helping startups and SMBs of all sizes transform their Rails applications from "way too magical garbage" to "wow, this is clean now and makes sense, and now I can iterate super fast!" I've worked with a handful of YCombinator companies, and even ended up as the lead of one. I have a strong passion for going from idea to production and architecting Rails applications using advanced design patterns (see: the ones that aren't in the Rails guides) to make testing straightforward, and make development of new features as easy as they were when the developer first hit rails new in their shell. I've turned my opinions — for better or for worse — into a book that's coming soon (TM). I've designed high-performance Rails applications that deal with tens of terabytes of data, to scaling Sidekiq to millions of jobs a day with lots of network IO, to everything in between. I've had a flurry of my own side projects and startups as well, some of which were commercial successes and some weren't. I have a myriad of open-source contributions, including but not limited to Rails, and designing/owning the most popular Rails engine for drip campaigns.

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