Freelancer profile translated to English.
Back to original languageAbout Julien
Web Developer specialized in Angular, Node.js 100% Remote!
Whether you're launching a new product or want to modernize an existing application, I'll support you throughout the development cycle with a modern TypeScript stack and solid foundations.
🎯 Two intervention contexts
→ Greenfield: I'll start your Angular/Node.js application from scratch, establishing a clean architecture from the outset (Clean Architecture, DDD, strict type-safety). You'll get a scalable, testable, and documented foundation, designed to evolve without technical debt.
→ Legacy takeover: Your application was launched as an MVP or inherited from a provider, and is reaching its limits? I'll transform the existing codebase into a maintainable product, migrating it to modern patterns.
🛠️ Technical Stack
- Front: Angular 20+ (Signals, zoneless, standalone, inject(), Resource API), RxJS, TailwindCSS, SSR.
- Back: NestJS, Hono.js, Java, REST API, JWT/RBAC, Prisma.
- Data: PostgreSQL (modeling, migrations, optimization).
- Tests: Vitest, Jest, Playwright.
- DevOps: Docker, CI/CD (GitHub Actions, GitLab CI), Traefik, VPS.
🚀 Recent Projects
- Applicant tracking SaaS developed from scratch (Angular, NestJS, PostgreSQL, follow-up CRON).
- Financial management app with E2EE AES-256-GCM, PBKDF2 encryption.
- Angular SSR coaching platform with analytics dashboard.
- Aeronautical business back-office (NestJS + PostgreSQL, ongoing)
- Astro 5 showcase website, Lighthouse 100/100, zero external JS
💡 What I bring
- Architecture design from scratch or audit/refactoring of existing systems
- Strict, tested, documented, production-ready TypeScript code
- Fast integration (Git flow, code review, agile)
- Mastery of modern Angular patterns
- Reliable delivery, without added technical debt
French
Native or bilingual
English
Conversational
Can work on-site
Voisins-le-Bretonneux (up to 30km), Saint-Quentin-en-Yvelines (up to 30km), Paris (up to 30km), Montigny-le-Bretonneux (up to 30km), Guyancourt (up to 10km)
Experience
- J-NedFull-Stack Angular & NestJS DeveloperSOFTWARE PUBLISHINGApril 2024 - Today (2 years and 4 months)Voisins-le-Bretonneux, France**→ Objective**: Design and deliver complete TypeScript web applications, from architecture to production deployment, for clients in the digital, coaching, and industrial sectors.**→ Challenges**: Ensure long-term maintainability through rigorous architecture, secure sensitive data, and meet strict deadlines with code delivered without technical debt.→ Technical StackAngular · TypeScript · NestJS · Hono · PostgreSQL · Docker · CI/CD · Clean Architecture→ My missions
- Design and development of full-stack web applications in strict TypeScript
- Systematic application of Clean Architecture (domain / infra / application) and DDD principles
- Financial and medical management application with end-to-end encryption (AES-256-GCM)
- Professional coaching platform with online booking and admin dashboard
- SaaS tool for tracking applications with automated email reminders (CRON)
- Full-stack professional portfolio with headless CMS, analytics, and advanced SEO optimization
- Aeronautical industry material management business application (ongoing)
- Dashflow | J-NedAngular DeveloperBANKING AND INSURANCEOctober 2025 - Today (10 months)Voisins-le-Bretonneux, France**→ Objective**: Develop a personal family budget and medical management application, fully client-side encrypted, with advanced financial data visualization and health tracking.**→ Challenges**: Ensure absolute confidentiality of sensitive data (finances, prescriptions, medications) through end-to-end encryption, without reliance on third-party cloud services.→ Technical StackAngular · TypeScript · TailwindCSS · Vitest · AES-256-GCM · PBKDF2 · Custom SVG→ My missions
- Design and front-end development of Angular 21 (zoneless, Signals, standalone components)
- Implementation of E2EE encryption: AES-256-GCM + PBKDF2 + double key wrapping
- Development of visualization components (area, donut, bar charts) in pure SVG, without external libraries
- Integration of a Command Palette with fuzzy search (Ctrl+K)
- Setup of 12-month financial projections and medication stock alerts
- Complete configuration of the Vitest test suite (unit and component)
- Candidash | J-NedFull-Stack Angular & NestJS DeveloperSOFTWARE PUBLISHINGJanuary 2025 - Today (1 year and 7 months)Voisins-le-Bretonneux, France**→ Objective**: Design an applicant tracking SaaS platform enabling users to centralize, track, and analyze their job search activities from a unified dashboard.**→ Challenges**: Ensure personal data security, automate follow-ups, guarantee architecture scalability, and provide a smooth user experience on both desktop and mobile.→ Technical StackAngular · TypeScript · NestJS · PostgreSQL · Prisma · JWT · Docker · CI/CD · REST→ My missions
- Design and development of the Angular front-end application (Signals, Clean Architecture, OnPush)
- Development of the NestJS API: JWT authentication with refresh tokens, RBAC, guards, and interceptors
- PostgreSQL database modeling and migration management with Prisma
- Setup of automated email reminders via CRON jobs (Nodemailer)
- Docker containerization and CI/CD pipeline for continuous deployment
- API documentation with Swagger and production deployment on OVH VPS with Traefik
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Education
- HTML5 CSS3 Certification Professional Title Web and Mobile Developer (Level 5 – RNCP)by the Ministry of Labor.2025Certification HTML5 CSS3 Titre professionnel Développeur Web et Web Mobile (niveau 5 – RNCP)
- Web and Mobile Developer, Programming / Computer Developer, GeneralStudi2025Développeur web et web mobile, Programmation / développeur informatique, général
Certifications
- Web and Mobile DeveloperStudi2025
- ERP/PGI Application Developer 1ALT-RH2023