
Damien Mercier
Product Engineer · React / Next.js / TypeScript
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Freelance
À distance uniquement
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À propos
Introduction
Fine-dining hospitality turned developer 4 years ago. I kept the obsession with detail and the habit of understanding the client before writing code. Product Engineer: I take a product topic from scoping (discovery, PRD, ROI-based prioritization) to full-stack React/TypeScript delivery, AI included. Recently: an AI-powered tool that cut a sales workflow from 45 min to 30 s. Before that: nearly 2 years on a B2C SaaS with 40,000+ paying users (monetization, i18n). Available now.
Expérience de travail
Product & Technical Consultant
FlexiworkFreelance
avr. 2026 - juil. 2026
4 mois
À distance
▸ Framed and shipped an AI-powered commercial PPT generator (Claude APIs orchestrated via n8n) reducing sales workflow from 45 min to 30 sec. ▸ Owned discovery for a 4-track product roadmap (organic acquisition, internal tooling, data infrastructure, commercial conversion), formalized in a complete PRD presented to founders. ▸ Executing end-to-end across all tracks: technical SEO rebuild, AI-powered PPT generator, automated multi-source offer aggregation, prospect-facing deal room with engagement tracking and HubSpot sync. ▸ Made build-vs-buy decisions with benchmarked ROI, sequenced acquisition → ops → data → conversion.
Frontend Engineer
Campus.coachFreelance
sept. 2024 - mai 2026
1 an 9 mois
À distance
▸ Implemented monetization flows (freemium, free trial, upsell), opening a new conversion funnel from free users to paid subscriptions. ▸ Led platform internationalization (2 languages, unit systems, country-based restrictions) to address the English-speaking market. ▸ Shipped new product verticals (trail running, nutrition and gut training modules) in partnership with the product team. ▸ Systematic review of specs, Figma mockups and user flows before development; acted as a technical sounding board for PMs on feasibility, scope trade-offs, and unstated requirements.
Full-Stack Developer
Greenworking
août 2023 - oct. 2024
1 an 3 mois
Paris, France
▸ Automated the PowerPoint report production chain (data collection to final presentation) and built React data visualization dashboards, partnering directly with consultants and analysts.
Front-End Engineer
Flexiwork
janv. 2022 - août 2023
1 an 8 mois
Paris, France
▸ Owned product specs and tech stack decision (Next.js, Tailwind) for the initial platform rebuild; led full UI/UX redesign in Figma as part of a two-person team. ▸ Identified independently that the team could not maintain a custom codebase: decided to rebuild on no-code with feature-level feasibility scoring and V2 deferrals; shipped the rebuild solo before transitioning out.
Full-Stack Developer
DOOLOO
juil. 2020 - déc. 2020
6 mois
Paris, France
Formation
EPITECH - European Institute of Technology
Master's degree, Computer Science
2022 - 2024
2 ans
Résultat : Master
EPITECH - European Institute of Technology
Bachelor, Computer Science
2019 - 2022
3 ans
Lycee Hotelier Guillaume Tirel
Brevet de technicien supérieur , Hôtellerie Restauration
2016 - 2018
2 ans 1 mois
Lycee Hotelier Guillaume Tirel
Baccalauréat technologique, hôtellerie restauration
2013 - 2016
3 ans 1 mois
Licences et certifications
Explore ML · Machine Learning Workshop, Intermediate Track
Délivré le : févr. 2020
Portfolio

Flexiwork
