Freelancer profile translated to English.
Back to original languageAbout Julien
Julien Sanchez | Full Stack Dev | Secure Apps Specialist
Full Stack Developer trained in cybersecurity. I design your web and mobile applications with security built-in from day one, not as an afterthought. Result: a high-performing app, compliant with GDPR/NIS2, that stands up to audits. Startups, SaaS, SMEs handling sensitive data.
The problem I solve
Most apps are secured after the fact, too late, too expensive. I integrate security from the design phase.
My profile
Full Stack Developer, DUT Informatique + Cybersecurity Engineering degree from INSA. I build your applications with the same rigor as an auditor who would try to break them.
What I do
- Complete Full Stack Development (back, front, deployment)
- Systematic Secure Coding (OWASP Top 10, encryption, IAM)
- Secure architecture compliant with GDPR / NIS2
- Audit of existing code and infrastructure
Why it works?
- Total autonomy: you don't manage technical coordination
- Rigorous methodology: testing, CI/CD, documentation
- Transparency: zero jargon, clear deliverables
For whom?
Startups and SMEs with sensitive data (health, finance, HR, B2B), SaaS publishers with high security demands, companies undergoing compliance.
First meeting is free, I'll honestly tell you if I'm the right person
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- ThalesCybersecurity EngineerFebruary 2025 - Today (1 year and 6 months)Toulouse, FranceDesign and implement robust cybersecurity solutions to protect critical defense and aerospace systems.
- WorldlineDevSecOps EngineerApril 2024 - September 2024 (5 months)Lyon, France• Automation of quality and security testing within CI/CD pipelines• Performance optimization and proactive vulnerability remediation
- AxopenInternship – Full-Stack DeveloperMarch 2022 - August 2022 (5 months)Lyon, France• Project dedicated to people with disabilities• Bug fixing and implementation of new features• Contribution to technical overhaul following a technology migration
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Education
- Cybersecurity EngineerINSA Centre-Val de LoireCybersécurité, Sciences des données - intelligence artificielle
- Computer Science Degree (DUT Informatique)Université Claude Bernard Lyon12022Administration réseau, administration système & développement