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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Network Security Engineer - **Company:** United ITs - **Location:** Castellón de la Plana, Spain (Remote available) - **Contract:** Permanent contract - **Skills:** Amazon Web Services, User Authentication, Microsoft Azure, Border Gateway Protocol, Network Operating System (NOS), CompTIA Network+, Data Centers, Domain Name System (DNS), Intrusion Detection Systems, Virtual Private Networks (VPN), Multi-protocol Systems, Network Security, Network Architecture, Network Interface, Routing, Network Administration, Network Virtualization, Network Protocols, Open Shortest Path First (OSPF), OpenStack, PCI Data Security Standards, Cloud Services, Zero Trust Network Access, Software Deployment, TCP/IP, Virtualization Technology, Wide Area Networks, WAN Optimization, Wi-Fi Technology, Network Routers, Computer Networking Systems, Google Cloud, Load Balancing, Swift (Programming Language), Firewalls (Computer Science), Juniper, Information Technology, Fortinet, Cisco, Citrix Netscaler, Vmware - **Published:** July 29, 2026 - **Apply:** https://www.buscojobs.com.es/network-security-engineer-en-castellon-de-la-plana-ID-365077794 ## About the Role The resource MUST have the following skills and experience:- Strong background and knowledge in cybersecurity risk management processes. - Strong understanding of cybersecurity standards such as ISO*****, SOC2, NIST, SWIFT, PCI-DSS. - Good experience in technical assessment of applications, IT systems, networks and services. - Familiarity with various network operating systems (e.G. Cisco, Meraki, Checkpoint, Juniper, Fortinet) and cloud service providers infrastructure (e.G. Azure, AWS, GCP). - Excellent knowledge of best practices around management, routing and switching protocols, and monitoring of network infrastructure (e.G. SDN, SD-WAN, DIA, BGP, MPLS, TCP/IP). - Expertise with production deployments and practical functionality of various network elements including routers, switches, firewalls, load balancers, WAN optimization devices, DNS servers, authentication servers, server network interfaces. - Knowledge of virtual networking concepts in VMware, OpenStack, and/or other network virtualization platforms. - Ability administering and troubleshooting firewalls and load balancers such as Checkpoint, Cisco, Meraki, Fortigate, Palo Alto, F5, NetScaler. - Ability to configure and provide support for load balancer solutions such as F5 and/or Citrix NetScaler's Load Balancers and Application Delivery Controllers. - Proven experience in administering and troubleshooting different networking solutions and components (next-generation firewalls, routers, campus and DC switches, VPNs and WIFI solutions). The resource SHOULD have the following skills and experience:- Relevant experience with a focus on routing and switching, and security in the following areas:- Deep knowledge of network protocols (e.G., TCP/IP, BGP, OSPF) and virtualization technologies. - Work experience in managing enterprise LAN, Data Centre, and WAN environments, using Cisco and other vendors' technology, in a complex multitenant and heterogenous environment. - Proven experience in deploying, managing and troubleshooting different network solutions and components. - Proven experience in deploying, managing and troubleshooting different security solutions and components (firewalls, VPNs, IDS/IPS, and security protocols). - Deep critical thinking skills demonstrating analytical and systematic approach to problem solving. - Critical thinking and analytical skills to assess threat relevance, impact and risks. - Teamwork- Communicating- Respecting and promoting individual and cultural differences- Knowing and managing yourself- Producing results- Moving forward in a changing environmentDesirable certifications:- Certification in network management and network security like CCNA, CompTIA Network+. - Training and certification in at least one of the following areas: CCNP, Cloudsecurity, CISSP, Zero trust architecture, relevant GIAC certifications.Teleworking Option:Yes, up to 4 days per week.On-call requirements:One week per month (rotation is subject to the number of team members). ## Description The resource MUST have the following skills and experience:- Strong background and knowledge in cybersecurity risk management processes.- Strong understanding of cybersecurity standards such as ISO*****, SOC2, NIST, SWIFT, PCI-DSS.- Good experience in technical assessment of applications, IT systems, networks and services.- Familiarity with various network operating systems (e.G. Cisco, Meraki, Checkpoint, Juniper, Fortinet) and cloud service providers infrastructure (e.G. Azure, AWS, GCP).- Excellent knowledge of best practices around management, routing and switching protocols, and monitoring of network infrastructure (e.G. SDN, SD-WAN, DIA, BGP, MPLS, TCP/IP).- Expertise with production deployments and practical functionality of various network elements including routers, switches, firewalls, load balancers, WAN optimization devices, DNS servers, authentication servers, server network interfaces.- Knowledge of virtual networking concepts in VMware, OpenStack, and/or other network virtualization platforms.- Ability administering and troubleshooting firewalls and load balancers such as Checkpoint, Cisco, Meraki, Fortigate, Palo Alto, F5, NetScaler.- Ability to configure and provide support for load balancer solutions such as F5 and/or Citrix NetScaler's Load Balancers and Application Delivery Controllers.- Proven experience in administering and troubleshooting different networking solutions and components (next-generation firewalls, routers, campus and DC switches, VPNs and WIFI solutions).The resource SHOULD have the following skills and experience:- Relevant experience with a focus on routing and switching, and security in the following areas:- Deep knowledge of network protocols (e.G., TCP/IP, BGP, OSPF) and virtualization technologies.- Work experience in managing enterprise LAN, Data Centre, and WAN environments, using Cisco and other vendors' technology, in a complex multitenant and heterogenous environment.- Proven experience in deploying, managing and troubleshooting different network solutions and components.- Proven experience in deploying, managing and troubleshooting different security solutions and components (firewalls, VPNs, IDS/IPS, and security protocols).- Deep critical thinking skills demonstrating analytical and systematic approach to problem solving.- Critical thinking and analytical skills to assess threat relevance, impact and risks.- Teamwork- Communicating- Respecting and promoting individual and cultural differences- Knowing and managing yourself- Producing results- Moving forward in a changing environmentDesirable certifications:- Certification in network management and network security like CCNA, CompTIA Network+.- Training and certification in at least one of the following areas: CCNP, Cloudsecurity, CISSP, Zero trust architecture, relevant GIAC certifications.Teleworking Option:Yes, up to 4 days per week.On-call requirements:One week per month (rotation is subject to the number of team members).#J-*****-Ljbffr ## Related Videos - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [An Applied Introduction to eBPF with Go](https://www.wearedevelopers.com/videos/1075-an-applied-introduction-to-ebpf-with-go) - [WebAssembly: The Next Frontier of Cloud Computing](https://www.wearedevelopers.com/videos/972-webassembly-the-next-frontier-of-cloud-computing) - [Your Infrastructure Is Not a Playground: AI Agents for Infra Done Right](https://www.wearedevelopers.com/videos/2084-your-infrastructure-is-not-a-playground-ai-agents-for-infra-done-right) - [Turning Container security up to 11 with Capabilities](https://www.wearedevelopers.com/videos/718-turning-container-security-up-to-11-with-capabilities) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Spanish Business Culture and Etiquette](https://www.wearedevelopers.com/magazine/353-spanish-business-culture-and-etiquette) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries)