Hi, my name is

Delphine Poupon.

I design and build modern web experiences.

Senior Frontend Engineer with 8+ years of experience, focused on creating scalable interfaces and shipping fast, polished web products.

Check out my projects!

About Me

I'm a Senior Frontend Engineer with over 8 years of experience building modern, scalable, and user-focused web applications.

I specialize in React, Next.js, and design systems, helping teams turn complex ideas into clean, high-performance interfaces. I enjoy working at the intersection of design and engineering, where great user experience meets robust, maintainable code.

Throughout my career, I've worked in both startup and product environments, often taking ownership of frontend architecture, improving performance, and building consistent UI systems from the ground up. I'm used to working without a dedicated designer, translating product ideas into intuitive and polished user interfaces.

In addition to frontend expertise, I also help clients bring projects to life end-to-end. For simpler needs like landing pages, MVPs, or small web applications, I handle everything from interface design to development and deployment, allowing clients to move fast without compromising on quality.

I care deeply about building products that are not only functional, but also clear, intuitive, and scalable over time.

Here are a few things I care about when building products:

  • ▹Building clean, scalable, and maintainable frontend architectures
  • ▹Crafting intuitive and high-quality user experiences
  • ▹Designing and maintaining consistent design systems
  • ▹Delivering fast, production-ready web products
  • ▹Bridging the gap between product, design, and engineering

Experience

A snapshot of where I've been working recently.

Frontend Engineer @ Independent / Freelance

Present

I design and build web applications, tools, and systems, from concept to production, with a focus on scalability, performance, and user experience.

Key projects

  • BeEco (custom game server & modding platform)
  • Pokopia Companion (web app & interactive tools)

Achievements

  • Designed and built a custom Eco server, developing gameplay mods, backend systems, and automation tools to support a live multiplayer environment
  • Built a full-stack web application (Pokopia Companion), including data architecture, API design, and interactive tools such as a map planner
ReactTypeScriptNext.jsTailwind CSSNode.jsC#Unity

Lead Developer @ Hyperspread

03.2022 - 01.2024

Led frontend development for a marketing SaaS platform, focusing on scalability, performance, and product quality.

Key projects

  • Led the migration to TypeScript and modern React architecture to improve maintainability and developer experience.
  • Designed and implemented a design system used across web and mobile applications.
  • Contributed to the development and maintenance of the mobile app.

Achievements

  • Improved codebase consistency and scalability
  • Took ownership of frontend architecture and mentored developers within the team.
React.jsTypeScriptNext.jsTailwind CSSReact NativeExpo

Lead Developer @ canB

03.2021 — 02.2022

Canb is an impact neobank committed to supporting ethical actions. The canB bank card brings rewards to give back to partner associations.

Key projects

  • Rebuilt and maintained core banking features for the canB card and donations platform.
  • Designed and maintained internal tools used by the engineering and operations teams.

Achievements

  • Reinternalized external code and restructured the environment used by the team through different tools.
  • Implemented authentication with 3D Secure v2 for secure online payments inside the canB application.
Flutter

Frontend Developer @ Freelance

08.2020 - 03.2021

Built a complete website from scratch for an independent newspaper.

Key projects

  • Deliver a fully functional, production-ready product

Achievements

  • Designed and implemented a clean, responsive user interface
  • Adopted and integrated modern technologies (Next.js, CSS-in-JS) within the project
React.jsNext.jsTypeScriptCSS-in-JS

Frontend Developer & UI/UX Designer @ FacilitaTrip

04.2018 - 09.2020

FacilitaTrip is a platform designed to simplify the creation and management of tailor-made travel experiences for travel agencies and tour operators.

Key projects

  • Centralizes itinerary planning and service bookings into a single platform, allowing agencies to efficiently build and manage complex trips.
  • Provides a comprehensive suite of tools for travel agencies, including itinerary planning, service bookings, and customer management.

Achievements

  • Developed a real-time route visualization system using Google Maps, dynamically updating itineraries based on Rome2Rio data when modifying trip steps
  • Designed and integrated multiple product features and UI flows, improving usability and overall platform experience
  • Built a channel manager to centralize product data, reservations, and operational workflows
React.jsReduxGoogle Maps API

Some Things I've Built

BeEco

BeEco is a custom Eco server where I develop mods and technical systems to extend the game's functionality and improve player experience.

I work on gameplay logic, server-side features, and automation tooling, including Discord bots, data tracking systems, and server management workflows. This project allowed me to combine game modding, backend development, and system design in a real-world environment with active users.

ReactTypeScriptNode.jsC#Unity

Pokopia Companion

Pokopia Companion is a web application I designed and built to enhance the player experience around the game Pokopia.

It combines structured game data (items, habitats, etc.) with interactive tools such as a map planner, allowing players to organize, explore, and plan their creations. The project focuses on performance, scalability, and a clean user experience, with a strong emphasis on data architecture and usability.

ReactNode.jsNext.jsTailwind CSSTypeScript

OniDream

OniDream is a sleep-tech project combining hardware and mobile application to improve sleep quality and enable lucid dreaming.

I contributed to research, prototyping, and mobile development, building an initial system using sensors and a connected mask to analyze sleep cycles. The project explored how to collect, process, and use sleep data to trigger stimuli (light and audio) during specific sleep phases, while also shaping the product direction and user experience.

Java

What's Next?

Get In Touch

I'm currently looking for new opportunities, my inbox is always open. Whether you have a question or just want to say hi, I'll try my best to get back to you!

Say Hello