Infrastructure and risk audit
Inventory, weak spots, quick wins, priorities and a repair plan for servers, networks, backup and monitoring.
Outcome: a prioritized risk map, quick wins and a repair plan.Paweł Zamaro / Senior (*NIX|Sys|Net|Dev)OP
Stable servers and networks. No guessing.
Audit, stabilization or ongoing senior support.
I help companies with their own infrastructure diagnose incidents, reduce risk and bring order to Linux, Windows Server, networks, VPNs, virtualization, backup and monitoring.
Usually replies within 1 business day · remote work in Poland and the EU · NDA on request
Complexity through simplicity.
The point
I step in where infrastructure matters, but nobody has the time to calmly untangle it.
I usually work with companies running their own servers, hosting, VPNs, firewalls, Proxmox, VMware, monitoring or production applications. I check how it really works, clean up configuration and make changes without adding another layer of chaos.
Ops Pulse
A small infrastructure pulse that says more than a long technology list.
Choose an area and see how I think about stability: not as a single tool, but as dependencies, rollback paths and signals you want to see before an outage.
routing
stable
> trace route: primary ok > bgp session: expected prefixes > fallback path: documented > change window: low risk
Entry offer
Four simple ways to work together.
Incident diagnosis and stabilization
Root cause analysis, reducing incident impact, cleaning up changes and documenting what was done.
Outcome: a stabilized service, root-cause summary and post-incident action list.Migration or modernization
Change plan, backup, maintenance window, rollback, tests and moving the environment through change without improvisation.
Outcome: a completed and verified change with tests, rollback and documentation.Ongoing senior support
A pool of hours, architecture consulting, change reviews, team support and a calm second pair of eyes on production.
Outcome: predictable access to a senior specialist, change review and an ordered risk backlog.Scope
Where I can help
Servers and services
Linux, Windows Server, web services, databases, containers, updates, migrations and root-cause troubleshooting.
Networks, VPNs, firewalls
VLANs, routing, IPSec, BGP, segmentation, admin access and cleaning up configuration that grew over years.
Virtualization and continuity
Proxmox, VMware, Hyper-V, Docker, storage, backup, monitoring and a realistic plan for when something fails.
Automation and documentation
Scripts, Ansible, Puppet, Git and notes you can come back to after a month without guessing.
You do not need to know the solution yet. A short description of the environment, problem and goal is enough.
Describe the problemProof
I have done this in environments where outages hurt.
I worked with home.pl, az.pl, Lubimyczytac.pl, Squiz and Tietoevry: from single servers to HA, multi-DC, global hosting, storage, monitoring and 100+ Gbit/s networks.
20+years of practice
100+ Gbit/snetwork and hosting infrastructure
HAredundancy and continuity
Examples
Situations where I usually make the biggest difference.
Failover that mostly existed on a diagram
Problem: HA without a regularly tested failover path.
Action: dependency review, health check fixes, failover test and rollback procedure.
Outcome: fewer single points of failure and a predictable handover path for the team.
A network that had grown for years without a single owner
Problem: VLANs, VPNs and firewalls worked, but nobody fully trusted the configuration.
Action: routing map, rule review, access segmentation and documentation of exceptions.
Outcome: clearer network boundaries and fewer changes made by guesswork.
Production after an incident that needed calming down
Problem: after the outage everyone knew something needed fixing, but priorities were unclear.
Action: log, backup, monitoring and change analysis, then quick fixes and a plan for next work.
Outcome: a more stable baseline and a concrete risk list instead of anxiety.
If this sounds familiar, describe the situation. I will tell you whether it is an audit, intervention or ongoing support topic.
Describe the problemSafe work
Infrastructure access is trust. Changes need a rollback path.
- least-privilege access and access tracking,
- backup or snapshot before a change when the situation requires it,
- agreed maintenance windows and clear incident communication,
- rollback, documentation and knowledge transfer to the team,
- NDA on request and remote work for companies in Poland and the EU.
Process
Understand first, then change.
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Diagnosis
I check what really works, what only looks healthy and where the largest risk sits.
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Plan
I define what needs fixing now, what can be simplified later and what should wait until there is a proper fallback.
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Implementation
I make changes with backup, monitoring, documentation and a clear rollback path.
Opinions
People most often come back to three things: knowledge, calm and delivery.
More recommendations on LinkedInOne of the most competent Linux/Unix dev/net/sys ops I have known.
Able to design architecture for a specific challenge and implement it with HA and security in mind.
Regardless of the scale of the issue, he stayed calm and logically worked his way to a solution.
Linux and networks hold few secrets from him. The kind of person you want to work with.
In a challenging environment he quickly became one of the people others went to for solutions.
He combines systems, networks and operations experience with the ability to solve complex technical issues.
Contact
Have a server or network issue you do not want to keep guessing about?
Write what you have, what is happening and what the goal is. I will answer directly: whether I can help and where to start.
biuro@netadmin.support LinkedIn: Paweł Zamaro