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Systems should remain understandable, diagnosable and maintainable after the work is done.
I work across the boundary between IT infrastructure and industrial systems: Linux servers, web platforms, networking, security auditing, PLC/HMI environments and the protocols that connect them.
My approach is practical: understand the existing system first, make changes that can be explained and reversed, and leave the environment easier to operate than it was before.
Start with the current environment, the symptoms or objective, and the constraints that matter.
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Follow logs, traffic, measurements and system behavior until the actual failure mode is understood.
Prefer changes that can be documented, monitored, reversed and maintained without a black box.
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Map the current system, constraints, failure modes and the result that actually matters.
Apply targeted changes with rollback paths, documentation and minimal unnecessary disruption.
Verify behavior under real conditions, review logs and leave the system easier to operate.
Linux deployment, migration, tuning and troubleshooting for web, mail, DNS, databases, storage and custom services.
Infrastructure design and performance work for web agencies, SEO professionals, WordPress/WooCommerce and database-backed applications.
LAN/WAN design, VLANs, routing, firewalls, VPNs, remote access and troubleshooting across IT and mixed industrial networks.
Review exposed services, authentication, TLS, firewalling, logging and operational weaknesses, then prioritize concrete remediation.
PLC/HMI development, diagnostics, industrial networking and field-device integration for Siemens, Beckhoff and related environments.
INN deployment, peering, reader/transit roles, filtering, storage, migration and historical archive workflows.
Recent client work includes infrastructure, hosting, mail, DNS, backup and security projects for:
Verified testimonials and company logos can be added over time.
Describe the environment, the symptoms or objective, and the constraints that matter. I can help determine the right next step before changes are made.
Open-source projects, NNTP infrastructure and long-term modernization work are documented in the Projects section.
Maintained server-to-server Usenet filtering for INN, modernized for current operational requirements.
Modern posting filter for INN nnrpd, focused on local submissions, policy enforcement and abuse control.
NNTP routing and proxy platform for multiple backends, load balancing, failover, authentication and accounting.
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