Hugo Pachy

As Technical Front-End Lead, I aligned front-end architecture with product constraints, balancing technical excellence and business needs. I led the front-end strategy and actively participated in early-stage decision-making to guide product development. Main Responsibilities : -Led the development of robust, user-friendly interfaces and managed two Agile teams (2–3 members each) -Migrated multiple micro-frontends to a monorepo NX application to improve development speed, developer experience, and local tooling optimization -Designed and implemented an atomic design system, ensuring scalable and reusable UI components -Oriented architecture towards a service-based model with mappers, improving modularity and maintainability -Introduced Agile practices, replacing the old Waterfall (V-Model) process to increase adaptability and delivery efficiency -Collaborated closely with stakeholders and back-end teams to streamline product delivery Key Achievements : -Successfully transitioned micro-frontends to a single NX app, improving velocity and developer comfort -Delivered a maintainable, scalable front-end architecture with atomic design and service-based patterns -Enhanced team performance and code quality through mentoring, code reviews, and architectural guidance -Improved delivery efficiency and team consistency by implementing Agile practices, planning 2–3 sprints ahead to increase clarity, strengthen commitment, and enable the team to reliably meet their goals. Tech Stack : React · TypeScript · NX Monorepo · Atomic Design · Agile · Front-End Architecture · Service-Oriented Design · Mappers

Led the development of the next-generation front-end application powering betting kiosks across the PMU network, a system processing several billion euros in horse-racing bets every year. Acted as a key technical leader within a SAFe Agile train, driving interface modernization, architectural direction, and software quality. Main Responsibilities : -Front-end technical leadership: architecture design, developer support, squad coordination, and technical workshop facilitation -Applied Clean Architecture to ensure performance, robustness, and scalability for high-volume, financially critical operations -Developed core business features: betting flows, ticket handling, sensitive user journeys -Integrated front-end with server APIs and kiosk hardware (cash/card handling, payment devices, peripherals) -Resolved production incidents through log analysis and rapid, secure fixes -Collaborated with product, design, QA, and back-end teams on user journeys and strategy Key Achievements : -Contributed to the redesign and stabilization of mission-critical betting flows used nationwide -Developed and refactored essential features powering kiosks handling significant financial volumes -Improved codebase consistency, promoted best practices, and strengthened the front-end ecosystem -Active participation in PI Plannings for functional and technical alignment Quality & Process : -Regular peer code reviews and mentoring -Proactive technical debt management and participation in on-call rotations -Ensured high quality with unit, integration, and e2e tests -Continuous collaboration with PO/PM, QA, designers, and back-end tech leads Tech Stack : React 18 · TypeScript · Electron · Node · TailwindCSS · Redux Toolkit · AWS

Worked with multiple clients on high-impact projects as a full-stack and front-end tech consultant, delivering scalable, user-focused web applications, PWAs, and AI-powered tools. Key Achievements : -Developed robust front-end and full-stack applications for clients including PMU and SANOFI -Implemented an Atomic Design System and service-oriented architecture with mappers to improve scalability and maintainability -Migrated micro-frontends, enhancing development speed, developer experience, and local tooling -Built secure, self-hosted AI solutions and chatbots with customizable agents, RAG workflows, and client-specific personas -Introduced Agile methodologies, replacing Waterfall cycles to improve delivery and cross-team collaboration -Mentored teams, performed code reviews, and guided architectural decisions Tech Stack : React · TypeScript · NX · NodeJS · Electron · TailwindCSS · GraphQL · AWS · GCP · LangChain · AI/Chatbots

Developed a ChatGPT-like application for two clients over two months. Initially used Chainlit, then transitioned to React, TypeScript, LangChain, and Python due to limitations. Delivered a self-hosted solution deployable on any cloud provider, ensuring data privacy by avoiding external platforms like OpenAI. Main Responsibilities : -Designed and implemented a customizable AI agent (GTPS) with client-specific personas -Allowed flexibility to use any LLM (Language Model) in the system -Integrated drag-and-drop functionality for document handling, enabling Retrieval-Augmented Generation (RAG) -Delivered the solution in a white-label format, preserving clients’ brand identity Key Achievements : -Successfully replaced external AI dependencies with a secure, self-hosted architecture -Created a modular and extensible AI solution adaptable to multiple clients -Enhanced application capabilities through RAG integration and document management -Delivered a fully branded, client-ready application in a short two-month timeframe Tech Stack : React · TypeScript · LangChain · Python · RAG · Self-hosted AI solution

Led the development of a Progressive Web App (PWA) for claims experts, focusing on offline capabilities. Key member of a 7-person Agile Scrum team, driving the PWA’s design, architecture, and deployment. Automated infrastructure with Terraform and deployed the full stack on Google Cloud Platform (GCP). Designed an offline-first architecture for seamless user experience and efficient workflows. Main Responsibilities : -Led full-stack development of the PWA, including offline-first capabilities and complex user flows -Automated infrastructure provisioning with Terraform and managed deployment on GCP -Developed key tools: photo capture, route planning, and complex forms to boost user efficiency -Collaborated closely with product, QA, and design teams to define features and optimize UX Key Achievements : -Successfully delivered a fully offline-capable PWA, improving claims experts’ productivity -Designed and implemented architecture supporting offline-first use cases and real-time sync -Streamlined workflows through reusable components and robust front/back integration -Contributed to team processes, mentoring, and Agile ceremonies Tech Stack : ReactJs · TypeScript · NodeJS · fastifyJs · Hasura · GraphQL · PWA · GCP · Terraform

Led the development of a web application aimed at reducing diagnosis time for rare diseases. Integrated the medVir AI API, adapting response templates for seamless front-end usability. Collaborated with clients to design a functional, user-friendly solution aligned with SANOFI’s vision. Delivered a multilingual application with a headless CMS, enabling language changes without developer intervention. Main Responsibilities : -Led full-stack development and front-end integration with AI APIs for medical data processing -Implemented multilingual support via a headless CMS to streamline content management -Collaborated with clients, product, and design teams to align features with user needs and company goals -Ensured robust architecture, maintainability, and efficient workflows across front-end and back-end Key Achievements : -Reduced diagnosis time through a user-friendly AI-assisted interface -Delivered a flexible, multilingual application with CMS integration for easy updates -Enhanced front-end usability by adapting AI responses for seamless user experience -Contributed to Agile processes, code reviews, and team knowledge sharing Tech Stack : ReactJs · TypeScript · Redux · NextJs · NodeJs · SEO · Google Tag Manager

I was responsible for developing key functionalities on a web application, where I played a pivotal role in modernizing the platform by converting the existing Meteor.js application to React.js. This transition improved the application’s performance and maintainability, while also enhancing the user experience. - Developed essential features, including user authentication, password reset with automated email confirmation, and independently designed and implemented the landing page. - Implemented a blog using EJS, and handled responsive web design using Bootstrap, ensuring a seamless user experience across devices. - Additionally, I led the implementation of a new newsletter registration program, contributing to improved user engagement and retention. Technical Environment: JavaScript, ReactJs, EJS, MongoDB, NodeJs, GraphQL, SEO