Your technology partner to structure, accelerate and secure your growth
CTO consulting, technical architecture, cybersecurity and product management for startups and enterprises
Our Services
Comprehensive support for your technology challenges
CTO / CPO as a Service
Outsourced technical or product leadership, part-time or full mission.
Technical Audit & Architecture
Assessment of existing systems, tech debt identification and recommendations.
Product Management
From idea to launch: scoping, specifications and development oversight.
Cybersecurity Consulting / CISO
Security policy, GDPR compliance, risk analysis.
MVP Design & Launch
Scoping and development oversight for MVPs with controlled budget.
Technical Business Plan
Technical section of business plans: costs, timeline, technology choices.
Scalability & Performance
Performance audit, optimization and scaling strategy.
DevOps & Infrastructure
CI/CD pipelines, containerization, monitoring and best practices.
Technical Project Management
Complex project management: planning, coordination, reporting.
AI Consulting
AI strategy, use case identification and integration support.
Change Management
Supporting teams through technology and organizational transformations.
Digital Transition
Assessment, selection and deployment of IT tools tailored to your business.
Process Automation
Identifying and implementing automations to boost efficiency.
Why Mag&Cie
Frequently Asked Questions
CTO as a Service is an outsourced technical leadership engagement. It's designed for startups, SMBs and growing companies that need senior technology leadership without hiring a full-time CTO. Mag&Cie provides support from a few days per month to intensive engagement, depending on your needs.
Our technical audit follows four stages: scope definition, in-depth analysis (code, architecture, infrastructure, processes), findings presentation and recommendations, then delivery of a prioritized action plan with budget estimates. Duration varies from 1 to 3 weeks depending on complexity.
Every project is unique, so our pricing is tailored. The first 30-minute qualification meeting is free with no commitment. Following our discussion, we provide a detailed quote with scope, methodology and budget. We offer one-off engagements, recurring support or intensive missions.
We support companies of all sizes: early-stage and growing startups, SMBs and mid-market companies looking to structure their technology, as well as Fortune 500 enterprises undergoing digital transformation. Our clients span various industries: fintech, healthcare, e-commerce, manufacturing, services, SaaS.
Based in Nantes (Saint-Sébastien-sur-Loire), we operate across France and Europe. Most of our engagements follow a hybrid model: on-site presence for key workshops and remote work for the rest. We work with clients in Paris, Lyon, Bordeaux, and throughout France.
An outsourced CTO is engaged long-term and takes operational responsibilities: managing teams, making architecture decisions, participating in executive meetings. A technical consultant intervenes on specific topics. At Mag&Cie, we offer both formats depending on your needs.
We provide comprehensive cybersecurity support: security audits, security policy implementation, GDPR compliance, risk analysis, business continuity plans, team awareness training. We act as an outsourced CISO to structure your security approach.
Yes, we support companies with their AI strategy: identifying high-impact use cases, feasibility assessment, model and tool selection (LLM, RAG, AI agents), prototyping (POC), deployment and team training. Our approach is pragmatic and ROI-focused.