Charles-Édouard Fatrane

Dimension Studios develops a SaaS platform for brands and e-commerce teams, covering TikTok Shop operations, creator and content performance, ad campaign management, customer service, and operational analysis.

I worked on a platform composed of several applications within a shared monorepo, transforming product needs defined in Linear into production-ready features for customer, brand, and administrator interfaces.

My responsibilities:

- Design and development of features in React.js and Next.js.

- Creation of reusable UI components.

- Integration of typed queries and mutations, forms, filters, and loading or error states.

- Improvement of user journeys, data visualization, and application reliability.

- Collaboration via GitHub Pull Requests, code reviews, CI, and Linear tickets.

I contributed to the following developments:

- Creation of a Paid Ads management space: campaigns, metrics, graphs, filters, product creation, editing, and selection.

- Improvement of video analysis pages with more statistics, date ranges, URL-synchronized search, and better handling of missing data.

- Contribution to the migration from NextAuth to Better Auth, with session management, Redis storage, and backward compatibility.

- Addition of URL-based activity filters, shared MapLibre components, and an admin dashboard to track Customer Service AI usage KPIs.

- Improvement of UX/UI for search, autocompletion, notifications, settings, and TikTok Shop flows.

Technical context: React.js, Next.js, TypeScript, Tailwind CSS, TanStack Query, Better Auth, NextAuth.js, Prisma, Drizzle ORM, PostgreSQL, Redis, MapLibre GL, nuqs, GitHub Actions, Linear.

Siit is a B2B SaaS platform that helps companies centralize and automate their internal support operations: IT, HR, Operations, and employee services. The product includes request management, workflows, knowledge base, notifications, employee portals, and integrations like Microsoft Teams.

I worked as a React.js / TypeScript developer on Siit's frontend products, primarily on the main application and the employee portal.

The team consisted of:

- 3 frontend developers

- 6 backend developers

Organization: GitHub, Linear, Slack.

My responsibilities:

- Development and maintenance of frontend features in React.js and TypeScript.

- Improvement of request filters, saved views, workflow UX, and validation states.

- Work on modals, forms, tables, keyboard shortcuts, tooltips, and line interactions.

- Contribution to notification forms, billing texts, satisfaction survey settings, and email configurations.

- Bug fixing on the employee portal, particularly around conversations.

- Improvement of Microsoft Teams channel management.

- Contribution to AI response feedback flows.

- Participation in code reviews, bug investigations, and frontend quality improvements.

I contributed to the following developments:

- Improvement of reliability and ergonomics in request flows, employee portal, and admin workflows.

- Identification of edge cases around API contracts, forms, local storage, i18n, and UI consistency.

- Contribution to a better internal support experience in several key product areas.

Technical context: React.js, TypeScript, MUI, REST API, i18n, Crowdin, PostHog feature flags, Rollbar, Microsoft Teams, GitHub, Linear, Slack, code review, CI workflows.

Uzzle is an AI application dedicated to character creation. The product allows for the generation of complex characters with detailed personalities, backstories, and characteristics from just a few inputs.

I worked on the design and development of the web platform, using a modern SaaS product-oriented stack.

The team consisted of:

- 1 fullstack developer (myself)

- 1 AI developer

- 1 product owner

My responsibilities:

- Development of the web application with Next.js and TypeScript.

- Implementation of the frontend architecture and the platform's main pages.

- Creation of modern, responsive, and reusable interfaces with TailwindCSS and Shadcn UI.

- Integration of features related to character creation, editing, and viewing.

- Implementation of the data layer with PostgreSQL and Prisma.

- Development of user flows for character generation and sharing.

- Improvement of the user experience for a creative AI product.

- Work on code maintainability, component structure, and interface quality.

I contributed to the following developments:

- Creation of a web platform allowing users to generate their characters from scratch.

- Implementation of a simple product experience around a creative AI use case.

- Development of a modern technical foundation for rapid product evolution.

Technical context: Next.js, React.js, TypeScript, PostgreSQL, Prisma, TailwindCSS, Shadcn UI, API, UI / UX, responsive design, frontend architecture, fullstack development.