David Joswig

Co-responsible for the operation and high availability of a large, production-critical server landscape in the public sector.

What makes the environment special: high availability requirements, many parallel specialist applications, and operation according to common security standards. Stability is not a bonus here, but a basic requirement.

Activities:

✓ Operation of Windows and Linux servers in a production-critical environment

✓ Monitoring and proactive error detection

✓ Incident response and troubleshooting of complex issues

✓ Collaboration with specialist departments, external service providers, and security officers

✓ Documentation and handover processes

Keywords: Server Administration, Windows Server, Linux Administration, BSI Basic Protection, IT Security, High Availability, Patch Management, Incident Response, Monitoring, IT Infrastructure.

External IT department for SMEs in the Rhine-Main region. I take care of the IT for managing directors who do not have an internal IT department or whose internal IT is reaching its limits.

Focus areas:

✓ Managed services for servers, networks, endpoints

✓ Backup strategies and disaster recovery, tested and documented

✓ Cloud migrations (Microsoft 365, Azure) where it makes economic sense

✓ On-premise operation in Windows and Linux environments

✓ Remote hands in Frankfurt data centers

✓ IT consulting for managing directors without their own IT leadership

What my clients get that they don't get elsewhere:

One person, one number. No ticketing system between us. Direct access to someone who not only forwards the problem to a colleague but solves it themselves.

Industries I work with: Small and medium-sized businesses, trades, service providers, smaller SaaS companies.

Client size: 5 to 500 employees.

Region: Frankfurt, Offenbach, Hanau, Wiesbaden, Mainz, Darmstadt, Aschaffenburg.

Remote throughout Europe

Six months of intensive data center operation at an established Frankfurt data center (FirstColo GmbH).

What makes this time valuable: Data center is the school for everyone who really wants to understand how infrastructure works. Not from a book, but with their own hands on the hardware.

Activities:

✓ Commissioning and maintenance of server hardware (Dell, HPE, Supermicro etc.)

✓ Setup and maintenance of network infrastructure (switches, routing, cabling)

✓ Support of storage and backup systems

✓ Remote hands for customers with colocation in Frankfurt

✓ Troubleshooting hardware failures, often under time pressure

✓ Collaboration with international clients whose servers are located in Frankfurt

What I take away from this: a feel for what lies beneath the software. Anyone who knows hardware debugs differently. And anyone who has been in a data center has a different idea of "high availability" than someone who just clicks cloud consoles.

Keywords: Datacenter, Frankfurt Data Center, Server Hardware, Colocation, Remote Hands, Network Infrastructure, Storage Systems, IT Hardware.