Open to opportunities

Damien Mercier

@damienmercier

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Front-End Developer building impactful React/TypeScript products, focused on user needs and visual experiences.

France

Message

What I'm looking for

I’m looking to build user-centered React/TypeScript features with Product, review specs and UX early, and own delivery end-to-end—so the product ships with real business impact and a polished, visual experience.

I’m a Front-End Developer who brings a fine dining background into software: attention to detail, a strong service mindset, and the belief that a successful experience is first and foremost visual. For over 4 years, I’ve built React/TypeScript applications while systematically challenging specs to ensure every feature addresses a real user need.

What drives me is understanding the business problem, translating the need into a concrete solution, and delivering a product that makes an impact. On Campus.Coach, I implemented the freemium model, free trial and upsell flows, and helped open a new conversion funnel that contributed to significant growth.

I also led internationalization (2 languages, unit systems, country-based restrictions) and reviewed specs, UX flows, and Figma mockups before development to identify friction points early. I thrive in close collaboration with Product Managers, and I’ve contributed 100+ pull requests within a 7-person front-end team.

Experience

Work history, roles, and key accomplishments

Current

Front-End Developer

Current

Campus.Coach

Jul 2024 - Present (1 year 11 months)

Implemented the freemium model, free trial, and upsell flows, creating a new conversion funnel that supported significant growth for a B2C coaching SaaS with 40,000+ paying users. Led internationalization and reviewed specs/UX flows in advance to reduce friction before production.

React TypeScript Tanstack Query React Hook Form Zod Cypress Vitest Internationalization

Full-Stack Developer

Greenworking

Jan 2023 - Jan 2024 (1 year)

Built React data-visualization dashboards from client survey data and automated PowerPoint report generation from data collection through client delivery. Partnered across consulting and engineering to align technical execution with client needs for organizations including BNP, CNP Assurances, and MAIF.

React TypeScript Python Docker Data Visualization Cross Functional Collaboration

Full-Stack Developer

Flexiwork

Jan 2022 - Jan 2023 (1 year)

Wrote product specifications and selected the tech stack for a platform redesign, including Next.js and Tailwind CSS. Owned end-to-end front-end delivery and contributed to a full UI/UX redesign in Figma with product and design decision-making within a two-person team.

React TypeScript Next.js Tailwind UI Docker Figma UI UX Design

Full-Stack Developer

Dooloo

Jan 2020 - Present (6 years 5 months)

Contributed to an AI-powered chronic pain management platform using Symfony and a MySQL/Neo4j data stack. Supported full-stack application development across back-end and data-oriented components.

Symfony MySQL Neo4j Full Stack Developer Graph Databases Platform Development