What you will do

As part of Johnson Controls’ global Network Security Operations function, this role is responsible for the day-to-day operation, monitoring, support, and lifecycle management of the enterprise network security infrastructure on Level 1 and 2.

The environment supports 1,000+ sites and 100,000+ users, including datacenters, manufacturing plants, sales offices, and customer contact centers. Technologies include Cisco, Fortinet, Zscaler, Silver Peak SD WAN, Akamai Guardicore, Tufin, Forescout NAC, Microsoft Azure, Google GCP, and related security platforms.

How you will do it

Operational Support & Maintenance

• Operate and support enterprise network security platforms including firewalls, remote access, cloud security services, proxies, and NAC solutions.

• Perform daily monitoring, health checks, and troubleshooting of network security infrastructure.

• Ensure high availability and performance of security services across on‑prem and cloud environments.

Incident & Problem Management

• Respond to network security incidents and outages, including triage, containment, and recovery.

• Work with SOC, Network, Cloud, and Application teams during security events or service degradations.

• Analyze logs and alerts using SIEM tools to support incident investigation.

Change & Configuration Management

• Implement approved firewall rules, policy changes, VPN updates, and security configurations in production environments.

• Execute changes following ITIL and change management processes.

• Validate changes post‑implementation and support rollback when required.

Lifecycle & Asset Management

• Manage security infrastructure inventory and asset records in CMDB.

• Track device lifecycle status, support contracts, renewals, and refresh readiness.

• Coordinate hardware/software maintenance, upgrades, and decommissioning activities.

Vendor & Service Provider Coordination

• Work with third‑party vendors and managed service providers to resolve incidents and deliver operational tasks.

• Support quote requests, order tracking, and delivery scheduling for security infrastructure.

• Ensure vendor work aligns with operational standards and security requirements.

Automation & Continuous Improvement

• Identify opportunities to automate repetitive operational tasks related to firewall rules, monitoring, reporting, and configuration management.

• Assist with operational runbooks, standard operating procedures, and knowledge documentation.

• Ensure all network asset data is accurate and support contracts are in place.

What we look for

Required

• Hands-on operational experience supporting enterprise network security environments.

• Willingness to learn.

Preferred

• Experience operating on-prem and cloud security platforms (firewalls, VPNs, proxies, NAC).

• Knowledge of:

  • Fortinet (FortiGate, FortiManager, FortiAnalyzer)

  • NAC solutions (Forescout)

  • Zscaler (ZIA / ZPA) or similar cloud security services

  • Tufin (SecureTrack / SecureChange) for firewall operations

• Experience executing changes in production environments under formal change control.

• Familiarity with SIEM tools (e.g., Splunk) for log review and incident support.

• Understanding of enterprise security concepts such as DMZs, WAF, DDoS protection, SSL inspection, and secure traffic flows.

• Experience working within ITIL-based operational processes (incident, change, problem).

• Exposure to Zero Trust Network Architecture from an operational support perspective.

• ServiceNow ticketing and CMDB experience.

• Basic scripting or automation experience (Python preferred).

• Network or security certifications such as (Cisco, Zscaler, Fortinet, Forescout, Guardicore, Tufin, CISSP, CEH, CISM or CISA certifications).

Our benefits

Besides working in an international environment, you will receive a regularly monthly bonus after your first six months, meal vouchers, a recreation allowance and retail discounts. Additionally, our flexible benefits program will allow you to customize benefits from a selection of 3500 products and service such as gym membership, medical cover, a multi-sports card plus many more.

Our onsite facilities at our Bratislava based office includes a canteen, nursery and coffee machines.

If you are relocating to Bratislava to join Johnson Controls, you will be eligible to receive a housing allowance to help you setup your new life in Slovakia.

The gross monthly salary for this position starts from 2,250 EUR per month, plus a monthly bonus that starts after your first 6 months. Please note this is a minimum salary and our compensation packages are based on your professional experience and qualifications.

Our culture

At Johnson Controls you’ll have the opportunity to work on some of the most exciting projects in today’s market. Our hardworking people empower us, and we believe in being part of a team that is open, collaborative, results-oriented, hardworking and above all fun. 

We believe that diversity and inclusion matter and make a difference. By embracing the true value of diversity and inclusion, getting comfortable with having crucial conversations, and valuing different perspectives, we will be one of the most desirable places to work. 

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