# Cybersecurity Network Security Specialist

**Company:** [SquareDev](http://jobs.workable.com/companies/wQZ5ptvWTa31vomire9Cix.md)
**Location:** Warsaw, Poland
**Workplace:** on site
**Employment type:** Full-time
**Department:** Consulting

[Apply for this job](http://jobs.workable.com/view/f94ce0f2-ab0f-464c-8c1d-4d9cf34bfd47)

## Description

**Why are you looking for a job?**

If your answer ticks all the boxes, this could be the start of a great collaboration.

-   You have a curious mind - You won't understand what we're talking about if you don't 🤔
-   You want to learn more around technology - You won't survive if you don't 😱
-   You want to make the world a bit better 😇

We happen to be just like that as well. We like hacking things here and there (you included) and create scalable solutions that bring value to the world.

### **SquareDev? 🐿️**

We use state-of-the-art technology to build solutions for our customers and our partners' customers. We make sure we stay best-in-class by participating in **research projects across Europe**, collaborating with **top universities and enterprises** **on** **AI, Data, and Cloud**.  
  
**About QnR Group**

**SquareDev is a member of the** **QnR Group**, a leading technology organization specializing in end-to-end custom software solutions, Artificial Intelligence, Cybersecurity, SAP S/4HANA, SAP Business One, ServiceNow, and FinTech solutions.

As part of QnR Group's ongoing expansion — both in Greece and internationally — we are continuously hiring across a wide range of tech roles. Successful candidates may be hired by QnR Group, or another company within the Group, depending on the role and project.

### **Role overview**

We are looking for a **Cybersecurity Network Security Specialist** to join one of our public sector clients based in Warsaw. You'll be hands-on in protecting and maintaining the network security infrastructure of a large enterprise environment.

## Requirements

**The ideal candidate will be responsible for:  
**

-   Administering, monitoring and troubleshooting network security solutions.
-   Providing 2nd line support to system and network users.
-   Creating and maintaining technical documentation and operating procedures.
-   Identifying and advising on network security improvements, changes and upgrades.

**To excel in this role, you'll need:  
**

-   At least **5 years** of experience in a similar network security role.
-   Education at Level 4 or above.
-   Strong understanding of TCP/IP, IP routing and network security policies.
-   Good knowledge of network services (DNS, DHCP, NTP) and endpoint OS network configuration (Windows, Linux, iOS).
-   Solid grasp of wired/wireless access technologies (Wi-Fi, 802.1x/EAP) and application-layer security (HTTPS/TLS, PKI, X.509).
-   Hands-on experience with enterprise network hardware (Cisco routers/switches, wireless controllers, firewalls).
-   Experience with stateful and stateless traffic filtering in large enterprise environments.
-   Strong troubleshooting, analytical and communication skills — both technical and non-technical.
-   Ability to work under pressure with minimal supervision, with a proactive and team-oriented mindset.
-   Valid category B driving licence and willingness to travel within Europe occasionally (up to 10 trips/year).
-   **Required certification:** CCNP Security or equivalent (e.g. Palo Alto Networks certifications).
-   English **B2 level certification** or higher**.  
    **

**Nice to have:  
**

-   CCSP (Certified Cloud Security Professional) or equivalent.
-   AZ-305: Designing Microsoft Azure Infrastructure Solutions or equivalent.
-   Hands-on experience with Palo Alto (Panorama, GlobalProtect, forward-proxy), Cisco switching, advanced firewall troubleshooting, and VPN design at scale.
-   Azure cloud networking: hub-and-spoke/landing zone design, NSGs/ASGs, Private Link, hybrid connectivity (VPN/ExpressRoute).
-   SASE/SSE experience: ZTNA, TLS inspection, identity integration, and migration from legacy on-prem proxy/VPN setups.
-   Zero Trust networking: identity and device posture-based policy, microsegmentation, east-west/north-south traffic control.
-   WAF and load balancing experience (F5, Cloudflare, Citrix, or similar).