Cornelius – React, React Native, Typescript

The project is akin to a "Shazam for movies," enabling users to identify films by their audio, currently supporting English movies. Developed in collaboration with partners, the app has been available for download on both the App Store and our website since the beginning of this year.

• Established front-end architecture and crafted custom components to enhance user experience;
• Developed a real-time audio recording module and implemented bundle symbolization for streamlined issue tracking on Sentry;
• Automated end-to-end testing with Detox and integrated captivating animations, optimizing user engagement. Additionally, facilitated seamless update setups using App Center Code Push.

Osapiens is a company that develops holistic Software-as-a-Service solutions that enable global companies from a wide range of industries to ensure transparency, efficiency, and trust along their entire value chain.

• Maintained and enhanced the existing portal bundle, quickly resolving bugs and introducing new functionalities to improve user experience and operational efficiency;
• Led the migration of multiple React bundles into a unified Vite React bundle, updating libraries, resolving bugs, and applying the latest React trends through extensive code refactoring, ensuring clean, reusable components;
• Prioritized and investigated production bugs across both backend and frontend systems, collaborating with cross-functional teams to deliver timely and effective solutions;
• Took on new challenges across both frontend and backend development, showcasing versatility and adaptability in problem-solving;
• Collaborated closely with UI/UX designers and frontend teams to ensure seamless integration of designs into the new bundle, improving overall user satisfaction;
• Leveraged React state management tools like Redux Toolkit and React Context for efficient, scalable application state management;
• Contributed to private npm libraries by adding new functionalities, fixing bugs, and pushing updated versions to Azure NPM artifacts;
• Established and managed CI/CD pipeline deployments to Azure using Azure DevOps, facilitating effective project management and streamlined collaboration and Led the migration of the entire portal codebase from MUI v4 to MUI v5, ensuring alignment with industry standards and best practices;
• Developed a variant system to support multiple customer configurations, leveraging dynamic imports to optimize performance and ensure tailored solutions for diverse client needs.

The project is a real estate web app for owners to be able to handle all the processes of evaluating their estate, linking with other entities, such as photographers, and diagnosticians. Managing all their estate via their dashboard with automatic publishing on 40+ platforms. The aim of the app is to have owners handle their estate without the need for agencies.

• Led the development from scratch of a responsive SaaS web platform using React, translating Figma designs into fully functional UI components;
• Integrated Stripe for seamless payment processing within the application, closely aligning with Figma models and business requirements;
• Integrated PriceHubble API to leverage real estate data within the platform, enhancing user experience and functionality;
• Demonstrated proficiency in React state management strategies, specializing in Zustand and React Context for efficient and scalable application state management;
• Collaborated closely with UI/UX designers, product owners, and backend engineers to ensure seamless integration of designs and functionalities;
• Defined project architecture, making informed decisions on technology stack and frameworks to optimize performance, scalability, and maintainability;
• Facilitated effective cross-functional collaboration, ensuring alignment with project goals and customer expectations;
• Optimized application performance and responsiveness through strategic state management and architecture decisions.

The project involved developing an internal app for a laundry company to streamline operations across multiple locations. Utilizing RFID scanners, the app enables seamless management of processes such as scanning laundry items, adding clients, and introducing new products efficiently.

• Supported application updates and executed a redesign of the existing front end to enhance user experience;
• Successfully debugged and resolved application issues, ensuring optimal functionality;
• Developed two distinct versions of the application, including a staging version for testing and a production version for deployment;
• Collaborated closely with UI/UX designers and the product owner to ensure seamless integration of designs.

A French digital platform that fosters innovation and scientific collaboration between academia and businesses, backed by government support and funding. Like LinkedIn, it offered features such as regular post feeds, job listings for researchers, collaborative projects, subscription options, and individual or institutional pages. Additionally, the platform facilitated one-to-one and group chats and contract finalization upon mission agreement.

• Designed and developed a real-time messaging system using React, Socket.io, and a Node.js backend, integrating chat, group discussions, and notifications seamlessly across web and mobile;
• Delivered full-stack features including posts, dynamic pages, advanced search, and authentication, all aligned with AdobeXD designs and REST API specs (via Swagger);
• Integrated Firebase Authentication for secure login, including Google and Apple social sign-ins, enhancing user onboarding and retention;
• Implemented a robust Stripe-based subscription system, enabling flexible billing, secure payment processing, and real-time access control;
• Designed and integrated collaborative project workflows with dynamic forms (Formik + Yup), improving user engagement and team coordination;
• Integrated Firebase Cloud Messaging (FCM) to implement reliable push notifications, keeping users informed of updates like new messages;
• Leveraged Firebase Storage to handle secure media uploads and downloads, such as profile pictures, shared images, or audio/video content, with access rules and performance optimization.
• Actively led code reviews, mentoring teammates and ensuring consistent code quality and maintainability.

The project involved developing a web application for COVID testing, catering to various entities including clients, laboratories, and event ticketers. Clients could register themselves or their families, select a partner laboratory for testing, and receive a barcode for event entry upon completion.

• Developed the application according to Figma designs;
• Integrated graphs using ApexCharts to display testing rates;
• Utilized Google Maps to provide directions to the nearest partner laboratory for client testing;
• Implemented barcode scanning and functionality;
• Created custom form components using Formik and Yup;
• Followed Agile methodologies, conducting code reviews for each pull request before merging;
• Utilized Jest and RTL utilities for Test-Driven Development (TDD).

The project focused on developing native apps for the AutoCare network using React Native for Android and iOS platforms. These apps cater to merchants and clients within the car wash sector, providing clients with functionalities to wash their cars, locate nearby stations via maps, and manage vouchers seamlessly.

• Developed both merchant and client applications based on Figma designs;
• Integrated Google Maps functionality to locate nearest stations;
• Implemented push notifications using Firebase;
• Followed Agile methodologies, including code reviews and pull request evaluations before merging;
• Incorporated Google and Apple authentication via Firebase;
• Utilized Redux Toolkit, React Hooks, functional components, Jest, and RTL utilities for Test-Driven Development (TDD);
• Collaborated closely with UI/UX designers to ensure smooth design integration;
• Employed performance optimization techniques to improve application speed and responsiveness;
• Conducted thorough code reviews, offering constructive feedback for continuous improvement.