Freelancer profile translated to English.

Description

Hello ! 👋 😀

Looking for a tech partner who understands your business challenges as well as your stack?

You're in the right place!

I am a graduate engineer fromENSIMAGwith10 years of experienceand I help entrepreneurs and companies create high-performingSaaS productsand integrate **Artificial Intelligence**.

My motto:code must serve the product.

Whether it's launching anMVPin record time or scaling a complex architecture, I focus on UX, conversion, and technical robustness.

### 💻 How can I help you?

👉 For Entrepreneurs (MVP Launch)

I transform your idea into a market-ready product.

👉 For Managers & Agencies (Senior Support & Scaling)

Need a tech lead or a right-hand person to stabilize your project?

👉 For Companies (AI & Automation)

I integrate the power of LLMs into your workflows to save precious time and secure your processes.

### 📈 They trusted me for...

💡 Creation of an AI voice agent SaaS (automated prospecting).

💡 Development of a complex wealth simulation tool (high-end UX).

💡 Scalability of a platform handling millions of requests

💡 Digitalization of student absence tracking (+30h of management time saved per month).

👉 Shall we discuss your project ?

I'm very responsive on the Malt messaging system.

We can schedule a short call to go over your needs and see how I can bring you value quickly.

See you soon! 😀

Daniel

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Clermont-Ferrand (up to 50km), Paris (up to 50km), Lyon (up to 50km), Moulins (up to 50km), Bourges (up to 50km)

VOICE_ IA.fr ⭐⭐⭐⭐⭐
Fullstack Developer Engineer - SaaS - AI
E-COMMERCE
May 2025 - November 2025 (6 months)
Paris, France
→ Mission Objective:
Design and launch a Sales prospecting SaaS platform enabling companies to create, deploy, and manage no-code AI voice agents for lead follow-up and appointment setting, in a scalable and international manner.

→ Achievements:

Development of a no-code/no-prompt AI voice agent solution covering the entire prospecting cycle (call scripts, multi-timezone automated campaigns, LLM analysis), significantly increasing post-lead responsiveness and sales conversion.
Implementation of an automated appointment scheduling system (Apple & Google Calendar), a mini CRM, and per-second billing, improving operational efficiency, perceived quality, and time-to-value for Sales teams.
Reliability and scalability of the platform (public API, webhooks, monitoring, critical production hotfix), including credit management, silent error detection, and immediate campaign resumption, ensuring business continuity and customer trust.

→ Technical Stack:
Next.js, React, Node.js, PostgreSQL, Prisma, Vercel, Stripe, Cal.com, Telephony & Transcription APIs, LLM, n8n, Webhooks, Vercel Monitoring
Artificial Intelligence TypeScript Next.js Fullstack Voice Agents
Optimisation Succession.fr ⭐⭐⭐⭐⭐
Fullstack Developer Engineer - SaaS - WealthTech
CONSULTING AND AUDITS
February 2025 - January 2026 (11 months)
Clermont-Ferrand, France
→ Mission Objective:

Create a SaaS platform for inheritance optimization in France for a WealthTech financial advisor, capable of calculating personalized wealth strategies and increasing prospect conversion.

→ Achievements:
Design of an inheritance optimization SaaS with a wealth simulator, generating€5.9M in gainsfor120 families, high perceived valueand decision support for the financial advisor.
Creation of asmooth and frictionless onboarding(UX, user journey, SaaS), achieving8% conversion, saving timefor users and improving sales performance.
Implementation of aLead Magnetinspired by Alex Hormozi via amini simulator with direct ROIon the homepage, increasingvisibility, lead captureand prospect quality.

→ Technical Stack:

React, Node.js, Next.js, TypeScript, PostgreSQL, REST API, TailwindCSS, BetterAuth, Vercel, CI/CD, Stripe
Next.js TypeScript Fullstack SaaS Stripe
ECOLE PRO ⭐⭐⭐⭐⭐
Fullstack Developer Engineer
EDUCATION AND E-LEARNING
November 2024 - February 2025 (3 months)
Roubaix, France
→ Mission Objective:

Develop and optimize a cloud application for student tracking for theLes Écoles PROnetwork, to improve visibility, performance, and time saved in managing attendance and absences.

→ Achievements:

Measurable time savings (+30h/month) for teachers and students thanks to a high-performance frontend interface, clear UX, better data visibility, and high perceived quality.
Frontend performance optimization (LCP, loading time, web performance) through manual NPM chunk splitting with Vite and vite-bundle-analyzer, significantly reducing the entry point size and improving rendering speed.
Cost reduction and improved Firebase performance through local Firestore caching with Dexie: minimal reads, only updated documents fetched, better performance, time saved, and scalability.

→ Technical Stack:
React, Firebase (Firestore, Functions, Storage, Auth), TanStack Query, Vite, Dexie, TailwindCSS, MailSender, SmsSender
Fullstack TypeScript Firebase Front-end Interface Development Automation

Check out Daniel's experience

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Baptiste Duhen

Fullstack developer

4.6

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Amed Hamou

Senior Lead Developer

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Audrey Champion

Web developer

4.3

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Signup to reveal

COMPUTER SCIENCE ENGINEER
Grenoble INP - ENSIMAG & EPFL
2016

Daniel David

✅ Fullstack Developer Engineer - SaaS - AI

About Daniel

Hello ! 👋 😀

### 💻 How can I help you?

### 📈 They trusted me for...

👉 Shall we discuss your project ?

Experience

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