06.03.2026 aktualisiert
100 % verfügbar
Senior Enterprise Network & Security Engineer
Osnabrück, Deutschland
Weltweit
M.Sc. in Computer, Control and communication EngineeringÜber mich
Senior Network and Security Engineer with 6+ years of experience designing, implementing, and securing IT infrastructures across multi-vendor environments. Proven expertise in network security architecture, HLD/LLD design, NGFW, VPN, WLAN, network segmentation, and enterprise monitoring.
Skills
WLANActive DirectoryArchitekturMicrosoft AzureBorder Gateway ProtocolBusiness DevelopmentCloud ComputingInformationssicherheitDynamic Host Configuration ProtocolNetzwerkadressübersetzungDNSEthernetFreertosSchaltanlageSicherheitstechnik
Network & Security Engineering
Design, implementation, and troubleshooting of enterprise network and security projects across multi-vendor environments
Security Standards & Architecture
ISO 27001, NIS2; network segmentation; Active Directory
Networking & Security Technologies
TCP/IP, Ethernet/IP, WLAN, IPSec & SSL VPN, DNS, DHCP, OSPF, BGP,NAT, VRRP, QoS, TLS, HTTPS, SNMP, ZTNA, SD-WAN, SAML, LDAP, RADIUS, SASE,Modbus TCP;MQTT
Security Platforms & Vendors
Cisco (Routers, L2/L3 Switches, ASA, Firepower), Fortinet (FortiGate, FortiAnalyzer, FortiSIEM), Sophos; HPE Servers
SIEM & Monitoring
FortiSIEM, Wazuh,Suricata, SolarWinds,Grafana
Industrial IoT Security
Secure MQTT client development using C, MbedTLS, and SafeRTOS for Industrial IoT devices
Cloud Technologies
Azure Cloud services and KodeKloud Engineer certification
Cybersecurity Compliance
Practical Cybersecurity Compliance for SMEs: Navigating EU Regulations
Design, implementation, and troubleshooting of enterprise network and security projects across multi-vendor environments
Security Standards & Architecture
ISO 27001, NIS2; network segmentation; Active Directory
Networking & Security Technologies
TCP/IP, Ethernet/IP, WLAN, IPSec & SSL VPN, DNS, DHCP, OSPF, BGP,NAT, VRRP, QoS, TLS, HTTPS, SNMP, ZTNA, SD-WAN, SAML, LDAP, RADIUS, SASE,Modbus TCP;MQTT
Security Platforms & Vendors
Cisco (Routers, L2/L3 Switches, ASA, Firepower), Fortinet (FortiGate, FortiAnalyzer, FortiSIEM), Sophos; HPE Servers
SIEM & Monitoring
FortiSIEM, Wazuh,Suricata, SolarWinds,Grafana
Industrial IoT Security
Secure MQTT client development using C, MbedTLS, and SafeRTOS for Industrial IoT devices
Cloud Technologies
Azure Cloud services and KodeKloud Engineer certification
Cybersecurity Compliance
Practical Cybersecurity Compliance for SMEs: Navigating EU Regulations
Erfahrung
Berufserfahrung5 - 10 Jahre
Freelancer seit2026
Sprachen
DeutschgutEnglischverhandlungssicher
Projekthistorie
M.Sc Thesis Project: Secure Industrial IoT cloud Connection via MQTT. Developed a secure MQTT client using C, MbedTLS, and SafeRTOS for Industrial IoT devices. Integrated Wazuh SIEM and Suricata IDS/IPS for real-time monitoring, intrusion detection, and event correlation
Designed High-Level and Low-Level Network Architecture (HLD/LLD) for enterprise customers including universities and government organizations. Implemented secure enterprise network infrastructures including core switching, routing, firewall segmentation, and secure remote connectivity. Deployed IPSec VPN, NAT, DNS, DHCP, and inter-VLAN routing to support enterprise connectivity and remote access. Translated business requirements into scalable IT infrastructure solutions and technical proposals including migration strategies and deployment plans.
Managed enterprise network infrastructure including switching, routing, firewall security, wireless networks, and VPN services. Installed and maintained data center rack infrastructure including switches, routers, firewalls, and wireless controllers. Configured VLANs, inter-VLAN routing, DHCP, DNS, NAT, IPSec VPN. Conducted firewall deployment and policy configuration and Performed onsite hardware replacement and network troubleshooting