Freelancer profile translated to English.
Back to original languageAbout Esteban
An unavailable or compromised system costs you time and money. Whether you're facing a critical failure, need to set up an infrastructure from scratch, or are looking for a solid technical profile to manage your IT support, I've got you covered.
Graduated engineer (ESIEA), my job is to build, secure, and repair.
My immediate areas of intervention:
Critical Troubleshooting & Support (After-Sales Service): I diagnose and repair complex system and network failures that disrupt your business. I also provide daily technical support to ensure the continuity of your services.
Architectures & Virtualization: Setting up resilient infrastructures from A to Z. I work daily with Proxmox virtualization, as well as administering Linux, Docker, and AWS environments.
Incident Response & Cybersecurity: Securing demanding environments that require complete control of access (root accounts). I intervene in concrete remediation cases, such as restoring systems after malware infections or managing fraud related to administrator accounts.
Application Understanding: Full-stack developer (PHP, Laravel, React, Vue.js), I understand the code running on the servers I administer. When there's a complex bug, there's no finger-pointing between the developer and the system administrator: I master the entire chain.
Do you have a technical challenge to overcome, an urgent issue to manage, or a complete infrastructure to build? Contact me so we can resolve the situation.
French
Native or bilingual
English
Native or bilingual
Spanish
Fluent
Can work on-site
Paris (up to 10km)
Experience
- SEDVIPEREFull-Stack Developer | Network & Cybersecurity Specialist (AWS, EBIOS, ANSSI)October 2025 - Today (8 months)Paris, FranceI offer a rare expertise: that of a hybrid technical profile.I'm not just a Full-Stack developer (Laravel, React, Vue.js), I'm also the System & Network Administrator and the Cybersecurity expert (certified AWS, EBIOS, ANSSI) who ensures your project is performant, compliant (GDPR), and secure from A to Z.I manage your web applications, from code to infrastructure.Examples of Projects Completed- B2B SaaS Design & Deployment (Full-Stack/Cloud)REST API Development (+120 endpoints) with Laravel & React.js SPA Dashboard.AWS Architecture (certified): Docker Cluster (ECS), Network Isolation (VPC), S3.Implementation of a complete CI/CD pipeline (GitHub Actions) for automated deployment.(Tech: Laravel, React.js, AWS, Docker, CI/CD, Git)- Security & GDPR Compliance Audit (Cyber/Audit)Formal risk analysis (EBIOS RM method) for an e-commerce player.Technical Audit (OWASP Pentest, Burp Suite) & Infrastructure Audit (Nmap).Management of GDPR compliance (based on CNIL MOOC) and remediation plan (ANSSI directives).(Tech: EBIOS RM, ANSSI, GDPR, OWASP, Burp Suite, Linux Admin)- "On-Premise" to Hybrid Infrastructure Migration (Sys/Network Admin)Network architecture redesign (VLAN segmentation) & virtualization (VMware).Dockerization of "legacy" applications (PHP, Java) for portability.Implementation of a Business Recovery Plan (BRP) with encrypted backups on AWS (S3).(Tech: Linux/Network Admin, Docker, VMware, AWS, Bash)
- Repare3D3D ModelerDecember 2020 - December 2022 (2 years)Paris, FranceI managed a custom repair part design and manufacturing business for individuals and small businesses. The goal was to replace small, hard-to-find plastic parts (supports, gears, case clips, buttons) through 3D modeling and printing.My end-to-end intervention:Reverse Engineering: I received the broken part or precise measurements (using calipers) to recreate the model identically.Parametric Modeling: I designed the part digitally using Fusion 360, ensuring that dimensions and mechanical constraints were respected.3D Printing (Manufacturing): I managed the 3D printing (FDM), selecting the appropriate material (PETG, ABS) to ensure the part's strength and durability.Delivery: After validation, I shipped the functional part directly to the client by mail.This activity allowed me to master the complete chain from design (CAD) to manufacturing (CAM) and develop a very concrete problem-solving approach.Technical Environment: Fusion 360, Parametric Modeling, 3D Printing (FDM), PETG/ABS, Cura.
Recommendations
Be the first to recommend Esteban
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
- Cybersecurity EngineerESIEA2025L'ESIEA est une école d'ingénieurs française (Bac+5), reconnue par la Commission des Titres d'Ingénieur (CTI). Elle forme des ingénieurs polyvalents dans le domaine des sciences et technologies du numérique. La formation couvre un large spectre de compétences, notamment : Le développement logiciel et l'ingénierie système. La Cybersécurité (offensive, défensive et gouvernance). L'Intelligence Artificielle et la science des données (Data Science). Le cursus, axé sur les projets, l'innovation et la recherche, est fortement professionnalisant et inclut de longues périodes de stages en entreprise.
- BUT in Networks and Telecommunications, Cybersecurity OptionIUT de Vélizy2024Le Bachelor Universitaire de Technologie (BUT) Réseaux & Télécoms est un diplôme national (Bac+3) formant des experts des infrastructures informatiques et de communication. La formation couvre un large spectre de compétences : Administration Réseau : Gestion des routeurs, commutateurs et protocoles réseau. Administration Système : Maîtrise des serveurs (Linux/Windows), de la virtualisation et des services associés. Télécommunications : Compréhension des technologies de transmission (filaire, sans-fil, fibre). Sécurité : Mise en œuvre des solutions de protection des réseaux et des systèmes (pare-feux, VPN). Développement : Notions de scripting et de développement pour l'automatisation et les services réseau. Ce cursus professionnalisant, qui inclut des stages ou de l'alternance, prépare les étudiants à concevoir, déployer, gérer et sécuriser les systèmes d'information.
Certifications
- AWS Certified Cloud PractitionerAmazon Web Service2025
- GDPR WorkshopCNIL2025