JCM
Berlin, Germany — Independent IT Consulting Freelance & Consulting Available

IT Infrastructure & Microsoft 365 Services

Supporting small businesses, independent professionals, and technical projects through secure, reliable, and manageable IT infrastructure solutions.

Microsoft 365 Infrastructure Networking Linux Security Documentation
What I Can Help With

Helping Build & Maintain Reliable IT Environments

Practical support for SMEs, portfolio projects, and independent professionals through infrastructure administration, Microsoft 365 management, technical documentation, and secure system deployments.

Microsoft 365 administration and tenant management
Secure remote access and infrastructure hardening
Linux and self-hosted systems
Network troubleshooting and configuration
Technical documentation and operational organization
Backup, recovery, and infrastructure optimization
Core Services

Technical Services & Infrastructure Support

Service areas built around real operational needs: administration, reliability, security, documentation, and maintainable infrastructure.

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Microsoft 365 Administration

User management, Exchange Online, Teams, SharePoint, MFA, tenant configuration, and security policies.

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Infrastructure & Self-Hosted Systems

Linux servers, Raspberry Pi deployments, Cloudflare Tunnel, LAMP environments, VPN and remote access solutions.

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Networking & System Administration

TCP/IP, VLANs, Cisco networking, routing, switching, Windows Server, and Active Directory.

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Cybersecurity & Hardening

MFA implementation, security baselines, endpoint protection, backup strategies, and ISO 27002 aligned practices.

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Technical Documentation

Runbooks, user guides, system documentation, infrastructure mapping, and operational procedures.

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Technical Consulting

Infrastructure planning, troubleshooting, deployment support, technical advisory, and freelance collaboration.

Real Infrastructure Work

Projects & Technical Documentation

The services are supported by real hands-on work, infrastructure deployment, documentation, and technical implementation published across this portfolio.

Approach

Practical, Documented & Infrastructure-Focused

My work focuses on clear implementation, maintainability, documentation, security awareness, and practical technical outcomes.

Hands-on technical implementation
Documentation-focused workflow
Security-conscious infrastructure design
Practical and maintainable solutions
Independent and collaborative project support
Professional infrastructure optimization
Professional Inquiry

Discuss a Technical Project

Available for freelance collaboration, Microsoft 365 support, infrastructure consulting, technical documentation, and system administration projects.