CTO-as-a-Service · BerlinAvailable now · interim cover in days

The depth of a firm.
The accountability of one engineer.

Fractional and interim CTO leadership for founders and boards. I set the technology strategy, architect what matters, and own the outcome — the same senior operator from the first call to the last commit.

0+
Certifications
0+
Projects
0+
Years
Mohamed Ghassen Brahim — CTO-as-a-Service, AAISM, CISSP, CISM and CCSP certified technology leader based in Berlin
Mohamed Ghassen Brahim
Founder & CTO · CC Conceptualise
Available

Trusted by teams at Fortune-500 enterprises

02Who I partner with

Tailored leadership for every stage.

From founders shipping their first MVP to enterprises modernizing legacy systems — I meet teams where they are.

Founders & Early-Stage Startups

Laying the technical foundation for rapid growth — including bootstrapped, pre-revenue, and non-technical founders. No question is too basic, and you won't be made to feel small.

Common focus areas
MVP DevelopmentScalable ArchitectureTech Stack SelectionFirst Engineers

High-Growth Scaleups

Optimizing technology and teams to handle exponential growth and complexity.

Common focus areas
Technical DebtTeam ScalingPerformanceProcess Optimization

Established Enterprises

Driving innovation through digital transformation, cloud adoption, and AI integration.

Common focus areas
Legacy ModernizationCloud MigrationAI ImplementationCybersecurity

Companies in Transition

Providing stable, expert leadership during mergers, acquisitions, or leadership changes.

Common focus areas
Tech Due DiligenceSystem IntegrationTeam RestructuringInterim Leadership
03Selected work

Outcomes first. The stack is just how we got there.

A selection of engagements with industry leaders — each led by the measurable result it delivered to the business.

faster model deployment cycles
Leading Global Reinsurance Provider

Scalable AI Platform on Azure Kubernetes Service

Architected and led the development of a modular, containerized AI platform, enabling standardized and reproducible data science environments with enterprise-grade security and governance.

Azure AKSTerraformJupyterHubApache SparkKafka
90%
reduction in environment setup time
Major Energy Technology Company

Secure AI Workbench for Engineering Teams

Designed and implemented a secure, modular cloud infrastructure for ML and AI applications, accelerating development cycles while ensuring strict compliance and role-based access control.

Azure MLTerraformCosmos DBAzure DevOpsRBAC
40%
improvement in compliance reporting efficiency
European Insurance Technology Leader

Cloud-Native Security & Compliance Platform

Developed an internal web application for security and compliance management, automating Azure infrastructure provisioning and CI/CD pipelines to streamline security operations.

.NET CoreAzure Entra IDSQL ServerARM Templates
10TB+
datasets processed in production
Enterprise Insurance Platform Provider

Data & AI Platform Engineering

Empowered data scientists and engineers by enabling customer leverage of enterprise data platforms, providing scalable, production-ready ML infrastructure and complete pipeline solutions.

Azure SynapseAzure MLPySparkPythonData Pipelines
04Verified expertise

Credentials that back the advice.

Not a wall of badges for its own sake — these are why the security, cloud, and compliance calls I make for you hold up under audit and due diligence. Every one is expert-level and independently verifiable.

New 2026

Advanced in AI Security Management

ISACA
CISSP

Information Systems Security Professional

(ISC)²
AZ-305

Azure Solutions Architect Expert

Microsoft
SC-100

Cybersecurity Architect Expert

Microsoft
What this means for you
Ship AI and software that won't fail a security review.
Security & AI risk
AAISM · CISSP · CISM
Cloud that scales and doesn't quietly bleed budget.
Cloud architecture
Azure Architect & DevOps Expert
Pass audits and customer due diligence with the paperwork ready.
Compliance & trust
CCSP · CCSK · Zero Trust
05Engagement models

Flexible ways to work together.

Choose the level of engagement that matches your needs and budget — scoped transparently, with no long lock-in. Ranges below are typical starting points; bootstrapped and pre-revenue founders are welcome — just say so and we'll right-size it.

Strategic PartnershipMost Popular

Fractional CTO

Ongoing strategic guidance and technical leadership for growing companies.

Typical investment
€3k–8k/ month
Retainer · scaled to days/week
  • Technology Roadmap
  • Architecture Review
  • Team Mentoring
  • Vendor Management
  • Board-level Reporting
Targeted Engagements

Project-Based CTO

Expert leadership for specific projects like cloud migrations or new product launches.

Typical investment
Fixed-fee
Scoped & quoted upfront · starters from ~€5k
  • MVP Architecture
  • Cloud Migration Strategy
  • AI/ML Platform Build
  • Security Audit & Hardening
  • Due Diligence
Expert Consultation

Advisory Services

High-impact advisory sessions for specific challenges or strategic decisions.

Typical investment
€250–400/ hour
Single sessions or a light retainer
  • Architecture Sounding Board
  • Technology Stack Selection
  • Hiring Support
  • Crisis Consultation
  • Strategy Workshops
Fixed-scope starters

Not ready for a retainer? Start small, priced upfront.

from ~€5k~2 weeks

Architecture & Codebase Audit

A senior review of your stack, architecture and tech debt with a prioritized action plan.

flat fee~1 week

Cloud / FinOps Cost Audit

Find where the cloud bill leaks and a concrete plan to cut it — without turning anything off.

€250–40060 min

Advisory Session

One high-stakes decision — architecture, hiring, build-vs-buy — pressure-tested in 60 minutes.

Tooling

The stack behind the work

30+ technologies · Azure-first · multi-cloud capable

Cloud Platforms
  • Microsoft Azure
  • AWS
  • Azure Kubernetes Service
  • Azure Functions
Development
  • .NET Core
  • Python
  • Node.js
  • React
Data & Analytics
  • Azure Synapse
  • Azure SQL
  • PostgreSQL
  • MongoDB
  • Redis
Security & Compliance
  • (ISC)²
  • Azure Security Center
  • Azure Sentinel
  • Azure Entra ID
DevOps & CI/CD
  • Azure DevOps
  • GitHub Actions
  • Terraform
  • Docker
AI & Machine Learning
  • Azure OpenAI
  • Azure ML
  • TensorFlow
  • PyTorch
Monitoring & Analytics
  • Application Insights
  • Power BI
  • Grafana
  • Prometheus
Integration & APIs
  • Azure API Management
  • Logic Apps
  • Service Bus
  • Event Grid
06About

A technologist with a love for smarter systems.

Mathematics, curiosity, and a decade in the enterprise trenches — distilled into technology leadership.

Mohamed Ghassen Brahim
Founder & CTO · CC Conceptualise
Berlin, Germany
10+ years experience
15+
Certifications
50+
Projects
MSc, Data Science (expected June 2026)
University of Colorado Boulder
Founder & CEO
CC Conceptualise GmbH
  • 15+ industry certifications
  • Fortune-500 client portfolio
  • Programming since age 13
  • Founder & CEO, CC Conceptualise GmbH

My passion for technology began at age 13 with competitive programming, where I learned to solve complex problems under pressure. This foundation in algorithmic thinking and mathematical reasoning has been the cornerstone of my approach to technology leadership.

Over the past decade, I've evolved from a competitive programmer to an enterprise technology leader, working with major insurance companies, global technology firms, and manufacturing giants. My mathematical background enables me to approach complex business challenges with analytical precision.

As a lifelong learner and educator, I believe that with the right approach and dedication, any technical challenge can be overcome. This philosophy drives my commitment to helping organizations build smarter, more efficient systems.

Professional timeline
2013–2018

Early Career & Foundation

Started with competitive programming, built foundational skills in algorithms and system design.

2018–2020

Enterprise Experience

Gained deep experience in enterprise-scale systems and cloud architecture.

2020–2025

Cloud, Security & AI

Focused on Azure cloud platforms, enterprise cybersecurity and AI/ML system development for major enterprises.

2026–Now

CTO-as-a-Service

Providing strategic technology leadership to growing companies.

Core expertise
Cloud Platforms
Microsoft AzureAmazon AWSKubernetesDocker
AI & Data Science
Machine LearningAzure MLPythonData Pipelines
Security
AAISM (AI Security)CISSPCISMCCSPZero Trust
Leadership
Team BuildingStrategyArchitectureMentoring
08Enterprise & procurement

Built to pass a vendor review.

For larger organisations and public-sector buyers — the contracting, compliance, and paperwork your procurement team needs before a conversation can even start.

A real contracting entity

Engagements contract through CC Conceptualise GmbH, Berlin, Germany — a registered German company, not a sole trader.

Security & data protection

GDPR-compliant data processing, a signable DPA, and security practices led by a CISSP/CISM/CCSP-certified architect.

Procurement-ready paperwork

MSA, NDA, professional liability cover, VAT ID, and client references available on request to clear vendor onboarding.

Agencies, integrators & partners

Need a fractional CTO to white-label for a client, or a senior associate to subcontract on a delivery? Let's talk partnership.

Partner with me

Full company & legal details on the Imprint.

07Start the conversation

Two ways in. Both reach me directly.

Book a no-commitment 30-minute call, or send a brief and I'll reply within 24 hours.

Free discovery call

30 minutes · no commitment
  • Assess your current technology stack
  • Identify quick wins and long-term strategy
  • Get actionable recommendations
Email me to book
Emailmbrahim@conceptualise.dePhone+49 173 366 0834
Office hoursMon–Fri, 9AM–6PM CET
  • Enterprise-grade expertise without enterprise costs
  • Proven track record with Fortune 500 companies
  • 15+ industry certifications (AAISM, CISSP, CISM, CCSP, Azure)
  • Strategic technology leadership from day one
  • Flexible engagement models that scale with you

Not ready to talk yet?

No pitch. Follow along, read the writing, or grab a playbook — reach out when the timing's right.

Trusted by companies in

Insurance & Reinsurance·Energy & Utilities·Healthcare Technology·Manufacturing·Financial Services