Freelancer profile translated to English.
Back to original languageAbout Oscar
What if your words became your best growth lever?
My name is Oscar, a freelance copywriter specializing in conversion copywriting and B2C, B2B & SaaS email strategies.
Trained in behavioral economics at Sorbonne, Columbia University (New York), and ESCP Business School, I combine behavioral science, storytelling, and data-driven marketing to create messages that turn your visitors into customers.
🎯 I co-founded Fastflo, a B2B SaaS in HR Tech, where I:
- Built the entire acquisition strategy from scratch: cold emails, automated sequences, and high-conversion content.
- Multiplied our B2B campaign response rate by 4 in 3 months.
- Improved customer retention and activation rates through a complete overhaul of email and onboarding journeys.
- Managed product messaging strategy (landing pages, emails, demo scripts, investor pitch decks).
💡 Today, I help startups and e-commerce businesses to:
- Convert more with clear and persuasive sales pages.
- Automate their acquisition through ultra-personalized email sequences.
- Retain their customers with content journeys that nurture the relationship.
🧠 My approach
Messages based on data, emotions, and buying psychology.
Every word is tested, every sentence has a purpose, every piece of content must generate a measurable result.
📈 What my clients get
- Landing pages that convert 2 to 3 times more.
- Email sequences that open deals.
- Content that inspires trust and triggers action.
French
Native or bilingual
English
Native or bilingual
Remote only
Primarily works remotely
Experience
- FastfloCo-founderTECHMay 2025 - Today (1 year and 1 month)San Francisco, United StatesI co-founded FastFlo with a friend from Harvard, a B2B HR SaaS platform where I literally got my hands dirty with everything: strategy, acquisition, copywriting, email automation, retention, and everything that makes a product take off.
- 🚀 Prospecting & growth:
I built outbound campaigns from A to Z (cold emails, LinkedIn sequences, nurturing, retargeting) that generated hundreds of qualified leads in ultra-competitive sectors. Double-digit response rates, tracked ROI, and meticulously crafted messages.- ✍️ Copywriting & storytelling:
I shaped FastFlow's entire brand voice—from the website to the pitch deck and conversion emails. My motto: write to sell, without the fluff, with a deep understanding of B2B pain points and the customer journey.- 💬 Retention & engagement:
From onboarding to reactivation campaigns, I implemented email and personalized content loops that exploded customer retention and satisfaction rates.👉 Today, I leverage this field experience to serve B2B and SaaS brands that want words that sell, impactful messages, and a strategy that converts. - Club des Entrepreneurs de la SorbonneEmail WriterEDUCATION AND E-LEARNINGSeptember 2023 - Today (2 years and 9 months)Paris, France🎯 My mission within my student association: create unforgettable and inspiring moments 🚀By leading email writing and managing communications, I had the opportunity to collaborate with key figures such as Éric Larchevêque, Jacques Attali, and many other influential personalities. 🌟But it wasn't just about communication; it was a strategic adventure where every detail mattered. From high-impact conferences to memorable events, every moment was designed to offer a smooth and captivating experience to all participants.And how did I achieve this? 🤔Selecting exceptional speakers for each event,Structuring personalized approaches for each collaboration,Negotiating with opinion leaders to secure their presence. 💬The goal? To create events that leave a mark, where every decision, every exchange, and every partnership is designed to exceed expectations. 🔥This experience allowed me to develop:Expertise in strategic communication to touch the heart of each interlocutor.Know-how in event project management, with obsessive attention to detail.Mastery of negotiation with opinion leaders and industry experts.This is just the beginning… Imagine what I could achieve with your team! 😎
Reviews
Recommendations
These freelancer profiles also match your criteria
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Education
- Bachelor's degree in EconomicsParis 1 Panthéon SorbonneÀ la Sorbonne, j’ai découvert bien plus qu’une passion pour l’économie : j’ai plongé dans le fascinant univers de la microéconomie et de l’économie comportementale. Comprendre ce qui motive les décisions des consommateurs, déchiffrer leurs comportements d’achat, modéliser leurs choix… tout cela m’a appris à transformer des données complexes en stratégies percutantes. Aujourd’hui, cette maîtrise me permet de créer des messages irrésistibles, capables de toucher la corde sensible des audiences et de déclencher l’action. Parce qu’un bon copywriting, c’est bien plus qu’un texte, c’est une décision influencée avec précision.
- Bachelor's degree in EconomicsColumbia University in the City of New York2024Étudier à Columbia, au cœur de New York, c’est comme plonger dans un bain bouillonnant d’idées et d’innovations. J’ai exploré l’entrepreneuriat, les stratégies d’innovation et l’analyse économique sous un angle audacieux et international. Chaque cours était une immersion dans la création d’impact : comprendre les dynamiques globales, identifier les opportunités cachées, bâtir des stratégies qui changent la donne. Ces expériences m’ont forgé une vision unique et globale, un atout que j’applique aujourd’hui pour concevoir des campagnes qui captent, engagent et transforment des idées en résultats concrets.
Certifications
- Introduction to PsychologyYale University2023
- Search Engine OptimisationCoursera2023