Freelancer profile translated to English.
Back to original languageAbout Christian
Outsourced CTO (PhD in Computer Science), I support startups and SMEs in their AI projects as well as the redesign,**industrialization, and security of their information systems.**
My role: design reliable, compliant, and scalable IT architectures, while integrating artificial intelligence (development teams, automation, AI agents, and business components) and DevOps / DevSecOps practices to make organizations more efficient and resilient, and capable of sustainably accelerating their delivery.
Hands-on CTO, I also intervene on code when it is strategic, particularly oncritical features or complex MVPs/SaaS(PHP / Symfony / Laravel / Vue.js stack, AI integration, automation).
This approach allows me to align technical strategy with product reality and ensure teams gain autonomy.
I also intervene in **IT audits**: evaluation of architectures, security, compliance, technical debt, and operational remediation plans.
15+ years of experiencein complex environments (fintech, e-commerce, SaaS, marketplaces, scale-ups).
Some results:
- Redesign of IT system and secure CI/CD (**-30% costs**, x30 cadence, +reliability).
- Microservices migration + AI engine (scalability, automated matching).
- Complete web migration ++8% SEOand enhanced compliance.
- Insurance broker, automate customer file qualification (68% automated, < 90s, < 4% error)
20+ projects delivered,5/5 rating on Malt.
Objective: transform your information system into a strategic, measurable, and sustainable asset.
Available for part-time CTO missions, IT system redesign or restructuring, security, IT audit, or applied AI and automation.
📩 Let's chat for 30 minutes to frame your context and see if I'm the right person for your project.
Christian
French
Native or bilingual
English
Conversational
Remote only
Primarily works remotely
Experience
- Essone GroupCTO / Tech Advisor - Proof of concept and design of a blockchain prior art solutionLEGALMarch 2026 - March 2026La Tour-du-Pin, FranceAssisted a project owner in designing a blockchain-based prior art solution, with a clear objective: to transform an idea into a quickly testable product.Acted as CTO to frame the need, define a realistic architecture, and validate technical feasibility through a functional prototype.Achievement:- Defined target operation (submission, hashing, blockchain anchoring, verification)- Arbitrated technical choices (Bitcoin vs. alternatives) based on costs and complexity- Designed and developed a demonstrable POC:- anchoring documents on the Bitcoin blockchain (testnet)- generating proof certificates- public verification- Set up simple interfaces for demonstration- Structured a product roadmap (POC -> MVP -> market)Results:- Functional prototype demonstrating the concept- Validation of technical choices and associated costs- Clear vision for progressive market entryApproach:Focus on simplicity, cost control, and risk reduction before going into production.
- Albatros ConseilCTO - Audit & security of a critical business application (post-pentest)BANKING AND INSURANCENovember 2025 - March 2026 (4 months)Paris, FranceActed as external CTO to support the security upgrade of a business application following an external audit (pentest).Legacy application handling sensitive data (documents, reports, media) in a context requiring high confidentiality and reliability.Audit triggered by the end client to assess data leak risks, revealing several critical vulnerabilities requiring rapid action.ObjectiveSecure the existing system without a full redesign, identify priority risks, and frame fixes for structured vulnerability management.Intervention- Code analysis (PHP/JS), infrastructure, and document management mechanisms- Review of vulnerabilities from the pentest (injection, service exposure, access, server configuration)- Identification of additional flaws (document access, insufficient controls, storage practices)- Deliverables produced:* technical reports per vulnerability* educational summaries for management* prioritized remediation plan- Tooling implementation:* automated tests (attack scenarios)* analysis tools to guide PHP migration- Implementation of best practices (versioning, security framework) and developer supportResults- Clear prioritization of security risks- Reduction of sensitive data leak risks- Reliability of fixes through testing and tooling- Structuring of technical practices- Improved security topic management for management
- CARTEZI TechnologyCTOBANKING AND INSURANCEMarch 2023 - June 2026 (3 years and 3 months)Paris, FranceDanapay is a fintech company specializing in money transfers between Europe and Africa, combining crypto solutions and traditional financial services to reduce transfer costs and times. The company operates in a sensitive regulatory environment, requiring rigorous security, traceability, and compliance.Project Summary:Outsourced technical management mission to oversee the complete IT system redesign in a context of growth and increasing regulation.Main Deliverables:
- Infrastructure redesign and deployment automation (secure CI/CD, DevOps)
- Transition from 1 deployment every 7 months to 1 per week
- 30% reduction in IT costs
- Implementation of unified monitoring (Grafana, InfluxDB, Metabase...)
- Advanced security: MFA, OTP, automated blocking, network segmentation, secrets vault
- GDPR compliance with Dipeeo, preparation for ISO 27001, DORA, and NIS 2
- Integration of asset freezing tools and fuzzy search engine via OpenSearch
- Support in developing key platform features (Laravel)
- Mentoring and management of an international team across multiple time zones (UTC -5 to UTC +3)
- Recruitment of new team members (sourcing, interviews, onboarding)
Result:A secure, compliant, and industrialized system capable of supporting the fintech's expansion and operational resilience.
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Education
- PhD, Computer ScienceI3S/CNRS2014Thèse CIFRE pluridisciplinaire (Cybersécurité / Cloud Computing / E-commerce / Architecture des systèmes informatique)
- Engineering Degree, Computer Science, specialization Cryptography and SecurityPolytech Nice Sophia2009Diplôme d'ingénieur, Sciences Informatiques, spécialité Cryptologie et Sécurité
Certifications
- PhD Computer SciencesI3S/CNRS2013
- EngineerPolytech2009