Network and Infrastructure Security Engineer 3
About the job
- At least 7 years of relevant networking or network security experience, with demonstrated Senior/L3 experience in enterprise environments.
- Strong hands-on experience with FortiGate, firewalls, VPNs, segmentation, and routing/switching infrastructures.
- Advanced knowledge of TCP/IP, VLANs, static and dynamic routing, OSPF/BGP, redundancy, and troubleshooting using traffic captures and logs.
- Experience with monitoring, hardening, change management, and documentation.
- Intermediate-advanced English for documentation and technical support.
- Analytical thinking, problem-solving ownership, prioritization by impact, and clear communication during incidents.
- Rigor in changes and documentation, collaboration with Security Operations and Cloud/Systems teams, mentoring L1/L2, and technical coordination of vendors.
- Administer and develop LAN/WAN, switching, routing, Wi-Fi, and connectivity between offices, data centers, providers, and cloud environments.
- Operate FortiGate, firewall policies, NAT, VPN, and segmentation; implement approved access and review rules.
- Resolve L3 network incidents, identify recurring problems, and monitor availability, performance, and capacity.
- Perform hardening, firmware updates, configuration backups, redundancy, and recovery testing.
- Deliver documented projects and changes, diagrams, and procedures; collaborate with providers and technical teams.
- Support incident response through logs, network analysis, and blocking or isolation actions under Security Operations coordination.
- Contribute to NIS2 through controls and evidence related to network, access, resilience, and vulnerability remediation; the role does not coordinate compliance or legal reporting.
- Experience with NAC, SD-WAN, network automation, critical infrastructure, OT/SCADA, and projects in multi-site environments.
- Relevant technical studies or equivalent experience.
- Cisco CCNA, CCNP Enterprise, or Security certifications; relevant Fortinet certifications for administered technologies; or equivalent network security certifications.
About the company
E-INFRA owns and coordinates businesses that build and operate energy, telecommunications, and civil infrastructure in Romania and international markets. Electrogrup handles engineering and construction, while Direct One and Netcity develop and operate fibre-optic networks used by telecommunications providers. Nova Power & Gas produces, supplies, distributes, and trades electricity and natural gas, and WESEE installs and maintains wind-energy equipment. The group combines infrastructure ownership with project delivery and ongoing technical operations for commercial customers, utilities, and communities. Established as a holding company in 2017, E-INFRA is headquartered in Bucharest, Romania.
Company Size
1,001-5,000
Company Stage
N/A
Total Funding
N/A
Headquarters
Bucharest, Romania
Founded
2017
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Simplify's Take
What believers are saying
- Full-cycle engineering: the industrial-network role covers design, configuration, testing, commissioning, and handover to operating teams.
- Technical breadth: Direct One's NOC engineer supports fibre, DWDM, and IP networks at both first and second support levels.
- Accounting breadth: the Cluj economist role spans fixed assets, reconciliations, inventory, reporting, and audit participation.
What critics are saying
- Nationwide deployment: industrial-network engineers must be available for project and on-site work across Romania.
- Limited contract duration: the Cluj economist position is on-site and fixed for two years.
- Language threshold: the Bucharest network-operations position requires advanced English and higher education in telecommunications or computing.
What makes E-INFRA unique
- Carrier-neutral model: Direct One supplies dark fibre and bandwidth through a non-carrier telecommunications infrastructure network.
- Open metropolitan access: Netcity makes Bucharest underground ducts and fibre available equally and transparently to telecommunications operators.
- Founder oversight: Teofil Muresan chairs the group board, while co-founder Simion Muresan serves as vice chairman.
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