About

Engineer by trade, builder by habit.

I'm Lukasz, an IT engineer and frontend developer from Poland, based in Dublin.

I'm a Senior Field Engineer with 4+ years of experience keeping business IT running. That means networks and Wi-Fi, firewalls and VPNs, switching and VLANs, as well as Microsoft 365 environments, hybrid Active Directory / Entra ID and enterprise endpoint management.

I'm on site and hands-on: from a firewall that won't boot after a power cut to an office that needs better Wi-Fi or a proper guest network. I hold a BSc (Hons) in LAN Cybersecurity from Atlantic Technological University Mayo, so security is part of how I set things up, not an afterthought.

Alongside that, I build production websites and web applications with Vue.js and modern JavaScript.

Lukasz Kaczmarek standing on a Dublin street

For businesses

How I can help your business

Small and growing businesses often don't need a full-time IT department, they need someone who can set things up properly and explain them clearly. Here's the work I take on.

Networks & Wi-Fi

Office networks that just work: reliable Wi-Fi coverage, separate guest and staff networks, VLANs, and switching set up and documented properly.

  • UniFi
  • Aruba
  • VLANs
  • LAN / WAN

Firewalls & remote access

Firewall set-up, review and recovery, plus secure VPN access for staff working from home and site-to-site links between offices.

  • SonicWall
  • pfSense
  • SSL VPN
  • Site-to-site VPN

Microsoft 365 & identity

Microsoft 365 and Entra ID set-up and tidy-up: user accounts, MFA, Conditional Access, SharePoint and hybrid Active Directory.

  • Microsoft 365
  • Entra ID
  • Active Directory
  • Conditional Access

Security health check

A practical review of who has access to what, how devices and admin accounts are protected, and what to fix first, explained in plain English.

  • Least privilege
  • Group Policy
  • Patching
  • Security baselines

Devices & IT support

New laptops and PCs prepared and ready for staff on day one, file server and permissions set up, and help when something stops working.

  • Endpoint provisioning
  • NTFS permissions
  • File server
  • PowerShell

Websites

Fast, well-built websites for small businesses, with an easy way to update your own content, set up for Google from day one.

  • Vue 3
  • TypeScript
  • SEO
  • Admin panels

Not sure where your problem fits? Describe it and I'll tell you honestly whether I can help.

Tell me what you need

Skills

What I work with

Frontend development

  • JavaScript
  • TypeScript
  • Vue.js
  • Vuex
  • Nuxt
  • Firebase
  • HTML5
  • CSS / Sass
  • Jest

Design

  • Figma
  • Adobe XD
  • Photoshop
  • Illustrator
  • UX / UI design
  • Web design

Infrastructure & networking

  • TCP/IP
  • DNS
  • DHCP
  • VLANs
  • NAT
  • SSL VPN
  • Site-to-site VPN
  • SonicWall
  • UniFi
  • Aruba
  • LAN / WAN
  • Wireless networking

Cloud & identity

  • Microsoft 365
  • Azure
  • Entra ID
  • SharePoint Online
  • IAM
  • RBAC
  • MFA
  • Conditional Access
  • Least privilege

Systems administration

  • Active Directory
  • Group Policy
  • NTFS permissions
  • M365 admin
  • File server
  • Endpoint provisioning
  • Device lifecycle

Security operations

  • Vulnerability management
  • Patch governance
  • SIEM log review
  • Incident escalation
  • Endpoint security

Automation & scripting

  • PowerShell
  • Python
  • Bash
  • Git

Governance & compliance

  • ISO 27001
  • Risk registers
  • Access reviews
  • Audit evidence
  • Security baselines

Education

  • BSc (Hons) in LAN CybersecurityAtlantic Technological University Mayo
  • Higher Diploma in Web Design & DevelopmentDublin Institute of Design

Courses & certifications

  • Security Compliance: ISO 27001Pluralsight
  • Azure Security Engineer Associate AZ-500Pluralsight
  • Windows Server 2019 Hyper-VPluralsight
  • Windows Server AdministrationPluralsight
  • Ethical Hacking: Penetration TestingPluralsight
  • Attacks and Exploits: Network and Application AttacksPluralsight

Like what you see?

Write to me about a website, a role, or anything infrastructure.

Get in touch