E-INFRA

Builds and operates energy and telecom infrastructure

Network and Infrastructure Security Engineer 3

Network Engineering & AdministrationConfirmed live in the last 24 hours

Full-timeBucharest, RomaniaNo salary listedIn-person

About the Job

Requirements

At least 7 years of relevant networking or network security experience, with demonstrated Senior/L3 experience in enterprise environments.
Strong practical experience with FortiGate, firewalls, VPN, segmentation, and routing/switching infrastructure.
Advanced knowledge of TCP/IP, VLANs, static/dynamic routing, OSPF/BGP, redundancy, and diagnosis using traffic captures and logs.
Experience with monitoring, hardening, change management, and documentation.
Intermediate-advanced English for documentation and technical support.
Analytical thinking, ownership of problem resolution, prioritization by impact, and clear communication during incidents.
Rigor in changes and documentation, collaboration with Security Operations and Cloud/Systems teams, mentoring L1/L2 staff, and technical coordination of suppliers.

Responsibilities

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 issues, and monitor availability, performance, and capacity.
Perform hardening, firmware updates, configuration backups, redundancy measures, and recovery tests.
Deliver documented projects and changes, diagrams, and procedures; collaborate with providers and technical teams.
Support incident response through logs, network analysis, and blocking/isolation actions under Security Operations coordination.
Contribute to NIS2 through controls and evidence related to the network, access, resilience, and vulnerability remediation; the role does not coordinate compliance or legal reporting.

Desired Qualifications

Experience with NAC, SD-WAN, network automation, critical infrastructure, OT/SCADA, and projects in multi-location environments.
Relevant technical studies or equivalent experience.
Cisco CCNA, CCNP Enterprise/Security, relevant Fortinet certifications for administered technologies, or equivalent network security certifications.

E-INFRA este unul dintre cele mai puternice grupuri romanesti, cu o activitate de peste 29 ani. Prin intermediul companiilor parte a grupului, E-INFRA activeaza in arii precum infrastructura energetica, de telecomunicatii si civila, fiind, de asemenea, prezent si in domenii cheie ca productia de energie si energie verde, distributia de energie si gaze naturale sau telecomunicatii. Grupul reuneste activitatile Electrogrup, Nova Power&Gas, Netcity, Direct One si Wesee, companii active in domeniul proiectelor de infrastructura energetica si de telecomunicatii. Alaturi de acestea, E-INFRA s-a dezvoltat constant si numara astazi peste 1200 de angajati.

In momentul de fata cautam un Network and Infrastructure Security Engineer L3 care sa se alature grupulului E-INFRA.

Responsabilitati

Administreaza si dezvolta LAN/WAN, switching, routing, Wi-Fi si conectivitatea intre sedii, centre de date, furnizori si mediul cloud.
Opereaza FortiGate, politici firewall, NAT, VPN si segmentare; implementeaza accesul aprobat si revizuieste regulile.
Rezolva incidente L3 de retea, identifica problemele recurente si urmareste disponibilitatea, performanta si capacitatea.
Asigura hardening, actualizari de firmware, backupul configuratiilor, redundanta si teste de recuperare.
Livreaza proiecte si schimbari documentate, diagrame si proceduri; colaboreaza cu furnizorii si echipele tehnice.
Sprijina raspunsul la incidente prin loguri, analiza de retea si blocari/izolari, sub coordonarea Security Operations.
Contribuie la NIS2 prin controale si dovezi privind reteaua, accesul, rezilienta si remedierea vulnerabilitatilor; nu coordoneaza conformitatea sau raportarea legala.

Cerinte:

Minimum 7 ani de experienta relevanta in networking / network security si experienta demonstrata Senior/L3 in medii enterprise.
Experienta practica solida cu FortiGate, firewall, VPN, segmentare si infrastructuri de routing/switching.
Cunostinte avansate TCP/IP, VLAN, rutare statica/dinamica, OSPF/BGP, redundanta si diagnostic prin capturi de trafic si loguri.
Experienta cu monitoring, hardening, change management si documentare; engleza mediu-avansata pentru documentatie si suport tehnic.
Gandire analitica, asumarea rezolvarii problemelor, prioritizare dupa impact si comunicare clara in situatii de incident.
Rigoare in schimbari si documentare, colaborare cu Security Operations si Cloud / Systems, mentorat pentru L1/L2 si coordonare tehnica a furnizorilor.
Avantaje: NAC, SD-WAN, automatizare de retea, infrastructuri critice, OT/SCADA si proiecte in medii cu multiple locatii. Studii tehnice relevante sau experienta echivalenta.
Certificari apreciate: Cisco CCNA / CCNP Enterprise / Security, certificari Fortinet relevante pentru tehnologiile administrate sau echivalente in network security.

About the Company

E-INFRA

Builds and operates energy and telecom infrastructure

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: Not listed
Total funding: Not listed
Headquarters: Bucharest, Romania
Founded: 2017

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