Network Engineer

Core is a high-growth Microsoft Managed Services Provider (MSP) delivering modern technology solutions across Azure, Microsoft 365, Security, and Modern Workplace. We specialise in providing a wide range of services, solutions and software to optimise our clients’ Microsoft investments. Our customers trust us to help them unlock productivity, reduce risk, and transform their businesses through technology.

We live by our CORE values: Customers first (we put customers at the heart of what we do and take accountability for our actions), One Core (we recruit, develop and retain great talent in a supportive team environment), Responsive (we’re flexible, approachable and responsive to customer needs), and Expertise (we’re proudly professional and continuously strive for excellence for customers, peers and partners).

Role overview

We are looking for a Network Engineer to join our network team.

The role covers network support, incident response, troubleshooting, firewall and VPN administration, LAN and Wi-Fi support, physical network installations, and project work for new sites and infrastructure changes.

This is a hands-on role in a multi-vendor environment, suitable for someone with good networking fundamentals who wants to develop further across enterprise networking, security and cloud connectivity.

The main working language is English. The candidate must be able to communicate, read technical documentation and perform day-to-day duties in English. This role is primarily remote; however, we value occasional in-person collaboration in our Gdańsk office. This position includes participation in an on-call rota, which may involve evenings, nights and weekends.

Main responsibilities

• Support and maintain the company's network infrastructure across cloud and on-premises environments.

• Monitor the network and respond to incidents and service requests.

• Troubleshoot network, connectivity, firewall, VPN, LAN, Wi-Fi and physical layer issues.

• Configure and maintain firewalls, switches, wireless networks, VPNs and WAN connectivity.

• Support site-to-site VPN connectivity with cloud providers, third-party partners and remote offices.

• Support SD-WAN and WAN connectivity across multiple locations.

• Take part in network projects, office deployments, migrations and infrastructure upgrades.

• Install, replace and maintain network hardware including firewalls, switches, wireless access points and related equipment.

• Investigate and resolve physical network connectivity issues, including cabling, patching and hardware faults.

• Assist with new office and site deployments, including hardware installation, patching, testing and handover.

• Create and maintain network documentation, diagrams and operational notes.

• Work with third-party suppliers, ISPs and internal teams to deliver changes and resolve incidents.

• Follow change management and implementation processes.

What we are looking for

• Good networking fundamentals.

• Practical troubleshooting skills.

• Hands-on approach to network operations.

• Comfortable working in a multi-vendor environment.

• Willingness to learn and work with different technologies.

• Good communication skills.

• Able to work independently and as part of a team.

• Organised and able to manage day-to-day tasks.

• Practical approach to problem solving.

• Able to stay calm and work through incidents in a structured way.

Required:

• Valid Cisco CCNA certification.

Desirable:

• Cisco CCNP.

• Microsoft Azure Network Engineer certification.

• Check Point, SonicWall, Fortinet, Palo Alto or other firewall-related certifications.

• Zscaler-related certifications.

• Other relevant networking, security or cloud networking certifications.

Language requirements

• English is the main working language.

• The candidate must be able to communicate in English, read technical documentation and perform day-to-day duties in English.

We offer:

• Flexible remote working arrangements.

• Supportive, ambitious and entrepreneurial culture where you'll have the freedom to drive ideas, take ownership and make a real impact.

• Two paid leave days per year to volunteer for causes that resonate with Core's values, such as charitable efforts, environmental initiatives, and supporting the next generation in tech.

• English classes with native speakers.

• Multisport card.

• Monthly WFH allowance.

• Catered quarterly & annual social events.