Freelancer profile translated to English.
Back to original languageAbout Julie
Full-Stack Web Developer specializing in Next.js, React.js, and TypeScript. I design showcase websites, web applications, and custom SaaS solutions for SMEs, startups, and ambitious entrepreneurs.
🚀 Currently CTO & co-founder of a B2B SaaS startup, incubated at Euratechnologies (Lille). Designed and developed end-to-end solo: Next.js, Prisma/PostgreSQL, Clerk, AI (Gemini, Claude API), data scraping. Proof by example of what I can build for you.
Do you have a slow or outdated website? A no-code MVP that's reaching its limits? An AI-generated project (v0, Bolt, Cursor) that needs a proper rework? I build fast, well-indexed, conversion-focused interfaces with clean, maintainable code.
🎯 Projects
🌐 Modern showcase websites: Next.js + headless CMS, local & programmatic SEO, mobile-first, optimized Core Web Vitals. Ideal for SMEs, clubs, restaurants, liberal professions.
⚙️ Web applications & SaaS: MVP from scratch to production, MVP redesign/stabilization, Stripe, admin dashboards, AI project takeovers (v0, Bolt, Cursor).
🛒 E-commerce & redesigns: WordPress / no-code migration → Next.js, SEO and CRO optimization.
⚙️ Stack
▪️ Next.js (App Router) / React.js / TypeScript
▪️ Tailwind CSS, shadcn/ui, Framer Motion, Figma
▪️ Node.js, Prisma, PostgreSQL, Zod
▪️ Stripe, Clerk, Vercel, Scaleway S3, Supabase
▪️ AI: Gemini, Claude API, Cursor, Claude Code
💡 What sets me apart: triple expertise in modern development + design/UX + 3+ years as a data engineer at Amazon. Scalable database architecture, documented code, you remain autonomous after delivery.
📩 Response within 24 hours. First discovery call free.
Based in Lille, remote anywhere in France.
Keywords: Next.js · React.js · TypeScript · Tailwind · shadcn/ui ·
Node.js · Prisma · PostgreSQL · Clerk · Stripe · Vercel · SaaS · MVP · showcase website · redesign · no-code to code · technical SEO · CRO · UX · AI · Gemini · Claude API · data engineering
French
Native or bilingual
English
Native or bilingual
Spanish
Conversational
Can work on-site
Lille (up to 50km), Paris (up to 50km)
Experience
- Confidentiel (Startup)CTO, Co-founder & Full-Stack DeveloperSOFTWARE PUBLISHINGMarch 2026 - Today (5 months)Lille, France🚀 Co-founder and CTO of a B2B SaaS startup currently in stealth,incubated at Euratechnologies (Lille).→ Mission:Design and end-to-end development of a custom web platformintegrating artificial intelligence, big data processing, and a sophisticated user experience.→ Technical scope (full-stack):- Frontend architecture Next.js 15 (App Router, Server Components)- Custom design system in Tailwind CSS + shadcn/ui- Backend Node.js / REST API, Clerk authentication- PostgreSQL database with Prisma ORM- External data scraping and enrichment pipelines- AI integration (Google Gemini, Claude API) for scoring and content generation- Vercel hosting + Scaleway S3 object storage- CI/CD, monitoring, automated backups→ Key achievements:- Complete UI/UX design and visual identity- Scalable data architecture (inheritance from my data engineer experience)- MVP delivered and users currently onboardingKeywords: Next.js, Nextjs, React, React.js, TypeScript, Tailwind CSS,shadcn/ui, Prisma, PostgreSQL, Node.js, Clerk, Vercel, App Router, ServerComponents, SaaS, MVP, AI, Gemini, Claude API, Web scraping, dataengineering, Euratechnologies
- AmazonData EngineerSOFTWARE PUBLISHINGJanuary 2025 - March 2026 (1 year and 2 months)Barcelone, SpainData Engineer at Amazon, Transportation Network Analytics team.→ Mission:Design and deploy a real-time serverless pipeline transforming hierarchical logistics data into analytical datasets, enabling live tracking of Amazon's transport operations on a continental scale.→ Achievements:- Event-driven architecture separating real-time and historical processing- Infrastructure as Code in TypeScript (AWS CDK), multi-environment CI/CD- Cross-account security (IAM, KMS), CloudWatch monitoring- Data integrity guarantee via ACID transactions (Apache Iceberg)- Code reviews and mentoring of engineers on AWS best practicesKeywords: TypeScript, AWS, AWS CDK, Lambda, Kinesis, S3, Glue, Athena,Iceberg, Step Functions, IAM, KMS, CloudWatch, Python, ETL, dataengineering, serverless, event-driven, Infrastructure as Code, CI/CD
- AmazonData EngineerSOFTWARE PUBLISHINGNovember 2022 - January 2025 (2 years and 2 months)London, UKDescription:Data Engineer at Amazon, EU Transportation team.→ Mission:Design and maintain ETL pipelines and data platforms supporting Amazon's transport operations in Europe.→ Achievements:- Design of scalable ETL pipelines on AWS (Spark, Glue, Redshift)- Migration and unification of data platforms → single source of truth- Standardization of datasets for logistics KPIs- Architecture documentation and cross-team knowledge transferKeywords: AWS, Python, PySpark, SQL, Redshift, Glue, S3, EMR, ETL, dataengineering, data modeling, data warehousing
Recommendations
Be the first to recommend Julie
Help this freelancer shine by sharing your experience working together.
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
- Master in Computer Science and NetworksTélécom Physique Strasbourg2022Spécialisation : Data Science & Intelligence Artificielle Cursus : Algorithmie, Bases de données, Machine Learning, Intelligence Artificielle, Statistiques, NLP, Optimisation, Architecture systèmes, Développement logiciel.
- Master in Complex Systems and Data ScienceUniversity of Strasbourg2022Master en double diplôme avec Telecom Physique Strasbourg. Cursus : architectures big data, modélisation statistique de données complexes, machine learning, méthodologies d'extraction de connaissances et d'IA, développement d'outils d'aide à la décision, optimisation de problèmes inverses.