Freelancer profile translated to English.
Back to original languageAbout William
Senior IT Consultant, I help SMEs and mid-sized companies secure, structure, and make their information systems reliable.
My assignments focus on IT audit, infrastructure audit, cybersecurity audit, IT governance, business continuity (Disaster Recovery Plan/Business Continuity Plan), service provider management, and interim IT Director support.
I work in demanding environments, with both a strategic and operational approach: risk assessment, prioritization, roadmap, infrastructure security, resilience improvement, and decision-maker support.
I have managed organizations of up to 300 employees, budgets of over €30 million, and critical transformation, migration, and security projects.
French
Native or bilingual
English
Fluent
Can work on-site
Nantes (up to 50km), La Roche-sur-Yon (up to 50km), Montaigu (up to 50km)
Experience
- EI William PastreIT Consultant / Technical Architect / CybersecurityCONSULTING AND AUDITSJanuary 2004 - Today (22 years and 7 months)Nantes, FranceSupport for IT modernization projects, infrastructure security, and business tool development for demanding environments requiring data availability, performance, and confidentiality.
- Design of technical architectures and support for transformation projects
- Execution of critical migrations with service continuity requirements
- Linux administration and security of exposed environments
- Implementation of hardening, access control, and resilience improvement measures
- Development of custom business applications
- Integration between applications and process automation
- Setup of reporting, analysis, and decision support tools
Key achievements:- Design of a local RAG architecture optimized for data confidentiality and latency reduction
- Zero-downtime migration of an e-commerce platform with 30,000 products and over €2 million in revenue
- Creation of an emergency management IT system that absorbed a more than 50% increase in activity with the same staff level
- Implementation of CI/CD pipelines, performance audits, and advanced Linux security measures
- Groupe de cliniques privéesDIRECTOR OF OPERATIONS & IT TRANSFORMATIONMEDICALJanuary 2015 - January 2025 (10 years)Nantes, FranceManagement of operational activities and IT projects in critical 24/7 environments, in a context of transformation, restructuring, and continuous improvement.
- Management of organizations up to 300 employees with middle management
- Leadership of multidisciplinary teams and activities with high service continuity stakes
- Direction of organizational and IT transformation programs
- Management of Capex / Opex budgets exceeding €30 million
- Management of external service providers and coordination of cross-functional action plans
- Major risk management, business continuity, and security of sensitive environments
- Deployment of planning, data analysis, and process optimization tools
- IT/business alignment, workflow structuring, and infrastructure reliability
- CMC FloréalHEALTH MANAGER / IT PROJECT MANAGERMEDICALJanuary 2009 - January 2015 (6 years)93170 Bagnolet, FranceManagement of care activities and IT projects in a high operational intensity environment.
- Management of an emergency department with over 18,000 visits per year
- Deputy to the Nursing Director
- Project manager for patient record computerization
- Management of an operating block with 8 rooms and sterilization
- User needs analysis and adaptation of tools to field constraints
- Change management support and solution deployment assistance
Key IT achievements:- Design and deployment of Flo_Urg, a business application for emergency management
- Development of an intranet including document management, incident reporting, and support ticketing
- Development of blood bank management software interfaced with the EFS (French Blood Establishment)
- Implementation of interfaces with existing software, including computerized patient records, workforce planning, and billing
Recommendations
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
- Bachelor of Science in Health Technologies, Major in General Computer ScienceCNAM2026
- Professional Bachelor's Degree in IT ProfessionsCNAM2026Chef de projet développement, sécurité et exploitation
Certifications
- Cyber Security 101TryHackMe2026