Zero Trust Network Operations Engineer
Johnson Controls · Bratislava-Bratislava-Slovakia ·
- Category
- Devops
Johnson Controls · Bratislava-Bratislava-Slovakia ·
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 salary and benefits
The initial basic salary for this position will be in the range of €2,261 – €3,392 per month, plus a 13th month salary applied after your first 6 months in the job. The final package will reflect your experience, skills, and qualifications relevant to the role. We are committed to fair, equitable, and gender-neutral pay practices.
At Johnson Controls, your work comes with benefits that support both your career and your wellbeing.
Meal vouchers fully covered by the company.
Flexible benefits budget with access to 3,500+ options, including a MultiSport card, medical and wellness services.
Extra savings through retail and lifestyle discounts (Benefit+).
Allowance for the private kindergarten or nursery to support your family.
Flexible working hours and home office days.
Allowance for language courses, professional development support, and wellbeing support.
On site benefits: massages, distribution of fruits, yoga, psychologist, health month, various events with supporting groups (volunteering activities, branding activities).
Seniority benefits - extra monthly financial allowance, medical care and support, wellbeing day.
Relocation support with housing allowance if moving to Slovakia
About Us
Johnson Controls, a global leader in thermal management, mission-critical building systems, energy efficiency, and decarbonization, helps customers use energy more productively, reduce carbon emissions, and operate with the precision and resilience required in rapidly expanding industries such as data centers, healthcare, pharmaceuticals, advanced manufacturing, and higher education.
For more than 140 years, Johnson Controls has delivered performance where it really matters. Backed by advanced technology, lifecycle services and an industry-leading field organization, we elevate customer performance, turn goals into real-world results and help move society forward.
We are committed to diversity and inclusion and believe that different perspectives make us stronger. By encouraging open dialogue and valuing individuality, we strive to be one of the most desirable places to work.
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