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

High response rate

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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Ruby on Rails Expert | Real Time App | NodeJS | ReactJS | NextJS

As a developer with over 7 years of experience, my journey began with a curiosity for how technology can be harnessed to solve real-world problems. Early on, I was drawn to full-stack development because of the opportunity to work across the entire application lifecycle. My expertise lies in Ruby on Rails, ReactJS, and React Native, but my passion for learning has driven me to continually expand my skill set with technologies like GO, NextJS, Node.js, and Python. One of my recent accomplishments was leading the development of a mobile app that streamlined a complex insurance process. By integrating APIs, building a custom voucher system, and enhancing the user interface, I not only improved the user experience but also contributed to a 10% increase in sales. This project reinforced my belief in the power of well-crafted software to drive business success. What sets me apart as a developer is my focus on problem-solving and scalability. I thrive on dissecting complex issues, whether it's improving performance by optimizing code or implementing a solution that scales seamlessly. I’m passionate about helping businesses grow through technology, and I pride myself on my ability to adapt quickly, learn new tools, and apply them to solve unique challenges. Above all, I am committed to building high-quality, impactful software that not only meets the needs of users but also drives meaningful results for the businesses I collaborate with. Whether it’s developing from scratch, maintaining existing projects, or testing new ideas with an MVP, I bring a versatile and solutions-driven mindset to every challenge.

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RailsHunter

High response rate

My name is NSABIMANA Emmanuel. I am a full-stack web developer with a love for problem-solving. The stacks that I enjoy working with are Javascript, Ruby, Ruby on Rails, React&Redux, NodeJs&KoaJs. ........My Skills include:........... ► Front-End: JavaScript, React, Redux, TypeScript, HTML5, CSS3, SASS, and Bootstrap. ► Back-End: Ruby, Rails, NodeJS, and Koajs. ► Database: Postgres, MongoDB, SQL. ► Tools & Methods: Git, GitHub, Heroku, Netlify, Mobile/Responsive Development, RSpec, TDD, Chrome Dev Tools ► Professional: pair programming, agile methodologies, strong written and verbal communication, mentorship, leadership, project management, public speaking, teamwork. ..........My Work experience includes:......... ► Worked on the chrome extension or plugin using ReactJs, the extension is based on the site. The extension functionality is responsible for capturing the screenshot after selecting a given area using the hover icon and sending the image to the backend to be stored in the database. ► Worked on a cyber project using VueJs which is related to tourist attractions. The project was very big and had complex functionalities like paying the weekly, monthly, and yearly subscriptions using the stripe method. ► Worked on the web-admin project using ReactJs + AWS amplify and GraphQL. ► Worked on the Orbital project, a liquidity and treasury funding UI which is built to allow Orbital Treasures/Ops/Finance teams to at any given moment, see the asset/cash balances we have in our accounts. It has been built using ReactJS, and Typescript, and our library was developed using a storybook. ► Contributed to Thoth project which is a multishot system builder. It leverages a visual coding style interface to allow game designers and developers to create powerful natural language rapidly systems and prototype games. ► Contributed to the IC Inventory for XREngine, Enabled blockchain-backed inventory system using the DIP-721v2 standard. ► Contributed to the Webaverse, an open-source web3 metaverse game engine that anyone can host. ► Developed a chess game logic and lesson features to help new beginners that need to learn more about the chess game. It has strong authentication using OTP and different functionalities like payment methods (Paypal, stripe, paddle, and Braintree), account invitations, and lessons. ► School Management System: A project built in Ruby on Rails for a school management dashboard to manage the course, students, parents, users, and other features that are on site. ► Video Search App. A project built in ruby on rails used to search the video added on the home page ► WEB3 SPORTSBOOK this betting project is built in typescript which will be used by the users to bet on the games using their cryptocurrencies that are available on the metamask wallet. ► Worked on the countries statistics project built with NextJs, Apollo server, Prisma, MongoDB, and Graphql. .........ACHIEVEMENT AND CERTIFICATE....... ► HACKATHON FOURTH PLACE WINNER - IC AVATAR CREATOR Accomplishments that we are proud of: - DIP721v2 integration and minting functions working from the UI - Canister asset storage working for storing assets fully on-chain - Interoperable 3D NFTs using the GLB model standard. ► MICROVERSE FULL STACK CERTIFICATE ► SPEAK_ ALGORITHM AND DATA STRUCTURE CERTIFICATE "I am open to any technology thrown in front of me as long as it solves the problem I am trying to solve. I believe in moving fast and breaking things." I keep myself updated with the latest technologies in the market and deliver the work as per the current market standards.

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