Enterprise infrastructure · networking · automation

Designing Reliable Enterprise Infrastructure Through Engineering and Automation

I help organizations design, stabilize, and modernize enterprise infrastructure across networking, Windows Server, Active Directory, and automation—with a focus on operational resilience and measurable outcomes.

Cisco & Aruba networking Windows Server & Active Directory PowerShell & Python Network security review Infrastructure operations
30+
Years of Enterprise & IT Experience
1000+
Endpoints Supported
40+
Enterprise Projects Delivered
12
Technical Articles Published

Career timeline

A track record of delivering enterprise infrastructure at scale across European institutions.

2021 – Present

Regional IT Officer

European External Action Service (EEAS)
  • Enterprise infrastructure and network operations across multiple sites.
  • Windows Server administration, Active Directory, and Group Policy management.
  • Infrastructure automation using PowerShell and Python to reduce operational overhead.
  • Network security review and segmentation for diplomatic environments.
2016 – 2021

Infrastructure Support Engineer

European Parliament
  • Provided 2nd/3rd line infrastructure support for Microsoft technologies and networking.
  • Active Directory, DNS, DHCP, and Windows Server lifecycle management.
  • Network administration across Cisco and Aruba switches and wireless controllers.
  • Developed operational runbooks and automation scripts for routine maintenance.

Selected achievements

High-impact outcomes across enterprise infrastructure, automation, and operational excellence.

🏛️

EU Institutional Infrastructure

Supported enterprise infrastructure across three EU institutions, including the European External Action Service (EEAS) and the European Parliament, ensuring 24/7 operational continuity for critical diplomatic and legislative functions.

Active Directory Automation

Designed and implemented PowerShell automation for administrative tasks, reducing manual user provisioning and group management overhead by over 95% in large-scale Active Directory environments.

🐍

Python Operational Tools

Developed Python tools for operational reporting and log analysis, enabling proactive anomaly detection and performance monitoring across hundreds of Windows and Linux servers.

📚

Technical Knowledge Base

Built a growing technical knowledge base with over 12 published articles covering networking, Windows, Linux, automation, and troubleshooting—establishing a consistent record of engineering documentation and knowledge sharing.

🌐

International Operations

Managed enterprise network and server environments in international operational contexts, spanning multiple countries and time zones, with a consistent focus on high availability, security segmentation, and disaster recovery readiness.

Featured engineering projects

Practical solutions built to solve real infrastructure challenges.

⚙️ Automation

Enterprise Active Directory Automation

PowerShell-based provisioning, user lifecycle management, and automated group membership auditing for large-scale AD environments.

📊 Analysis

Windows Event Log Analyzer

Python tool that aggregates and correlates security and system logs from hundreds of servers to identify patterns and anomalies.

📝 Parser

IIS Log Parser & Reporting Engine

Custom script to parse IIS logs, extract key metrics (response times, error rates), and generate daily operational dashboards.

🛠️ Toolkit

PowerShell Infrastructure Toolkit

A modular library of reusable PowerShell functions for network diagnostics, server health checks, and automated remediation tasks.

🔬 Lab

Nmap SMTP EHLO Enumeration Lab

Controlled lab environment for enumerating SMTP capabilities and validating mail-service security configurations using Nmap and custom scripts.

📄 Docs

Network Documentation Generator

Python application that automatically discovers network topology (CDP/LLDP) and generates structured documentation and diagrams.

Case studies

Real-world challenges, engineered solutions, and measurable outcomes across enterprise environments. Problem → Solution → Result.

🌍 Infrastructure

Regional Infrastructure Operations for EU Delegations

Problem: Multi-site latency and inconsistent policy enforcement across 10+ geographically dispersed delegations.

Solution: Centralized Active Directory with optimized replication, standardized GPOs, and automated site-link monitoring via PowerShell.

Outcome: Achieved 99.9% policy consistency across all sites. Reduced replication-related incidents by 85%.

👤 Automation

Enterprise Active Directory Automation

Problem: Manual user provisioning and de-provisioning took over 2 hours per request, with frequent human errors in group assignments.

Solution: End-to-end PowerShell automation orchestrating AD, Exchange, and file-server permissions with validation logic and approval workflows.

Outcome: Provisioning reduced to 5 minutes. Zero manual errors. Audit compliance improved to 100%.

🔍 Analysis

Windows Event Log Analysis

Problem: Security and system logs from 200+ servers generated terabytes of data, making threat detection and root-cause analysis nearly impossible.

Solution: Custom Python-based log aggregator with anomaly detection, correlation rules, and a lightweight web dashboard for real-time monitoring.

Outcome: Reduced Mean Time to Detect (MTTD) by 70%. Enabled proactive remediation of critical issues before user impact.

🧪 Lab

SMTP Testing Laboratory

Problem: Production mail-flow changes carried high risk, as there was no isolated environment to validate SMTP, EHLO, and certificate configurations.

Solution: Built a fully isolated lab replicating production PKI, DNS, and SMTP topology using virtualized infrastructure and custom Nmap automation.

Outcome: All mail changes now validated in lab first. Production incidents related to mail flow dropped by 90%.

📐 Documentation

Network Documentation & Automation

Problem: Network topology diagrams were manually drawn and quickly became outdated, causing delays in incident response and capacity planning.

Solution: Python scripts leveraging CDP, LLDP, and SNMP to auto-discover devices and generate structured, version-controlled documentation.

Outcome: Live, accurate network maps accessible to the entire team. Incident resolution time improved by 40%.

🛠️ Tooling

PowerShell Tool Development

Problem: Infrastructure engineers spent 15+ hours per week on repetitive maintenance tasks across hundreds of Windows servers.

Solution: Developed a custom PowerShell module with reusable functions for health checks, automated patching, and batch configuration updates.

Outcome: Reduced routine maintenance time by 80%. Freed up senior engineers for strategic project work.

Professional profile

Practical engineering, structured troubleshooting and clear operational ownership.

Infrastructure

Enterprise systems and networks

I work across the full infrastructure lifecycle: design, implementation, incident response, stabilization, optimization and documentation.

Method

Evidence-led troubleshooting

My operating model is simple: scope, logs, restore, stabilize, investigate, communicate, implement and document.

Automation

Reduce operational friction

I build scripts and operational tools that convert repetitive tasks into consistent, auditable workflows.

Assurance

Resilience over complexity

I focus on practical infrastructure controls: segmentation, access discipline, reliable backups, visibility and documented recovery paths.

Enterprise consulting services

Service areas are scoped around business outcomes rather than fixed generic packages.

01

Enterprise infrastructure

  • Windows Server administration
  • Active Directory, DNS, DHCP and Group Policy
  • Backup and disaster-recovery validation
  • Operational standards and documentation
02

Network engineering

  • Cisco and Aruba switching and wireless
  • Routing, VLANs and segmentation
  • VPN design and troubleshooting
  • Palo Alto configuration and network policy review
  • Performance and fault isolation
03

Infrastructure automation

  • PowerShell administration workflows
  • Python reporting and analysis tools
  • Automated health and compliance checks
  • Log processing and operational dashboards
  • Runbooks and repeatable remediation
04

Network security and infrastructure checks

  • Network segmentation and access review
  • Firewall and network policy checks
  • Logging and monitoring validation
  • Server configuration review
  • Operational risk identification
05

Migration and modernization

  • Windows Server upgrades
  • Active Directory modernization
  • Infrastructure consolidation
06

Technical consulting and training

  • Architecture and health reviews
  • Complex incident troubleshooting
  • Operational mentoring
  • Networking, Windows and automation training
  • Project and contract engagements

Technology expertise

Core platforms and tools used across enterprise operations, automation and infrastructure assurance.

Cisco EnterpriseArubaPalo Alto NetworksWindows Server Active DirectoryGroup PolicyDNSDHCP LinuxPowerShell PythonVMwareHyper-VAnsible DockerSQLWiresharkNmap Infrastructure MonitoringNetwork Security Review

Featured technical articles

Practical guidance focused on diagnosis, validation and repeatable engineering methods.

View all articles

Contact

For consulting, troubleshooting, project work, training or senior infrastructure opportunities.

Direct contact

Email

[email protected]

LinkedIn

konstantinos-pandis-15804483

Typical engagements

  • Enterprise infrastructure consulting
  • Network architecture and troubleshooting
  • Windows infrastructure and automation
  • Network security and infrastructure reviews
  • Short projects, contract roles and monthly support
  • Permanent senior infrastructure positions