Network Security Engineer
Centillion Infotech
Dallas, TX, United States
11 days ago
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Role details
Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience level
Expert
Experience required
10 years minimum
Working hours
Regular working hours
Job source
Tech stack
Application Programming Interfaces (APIs)
Amazon Web Services
Proxy Servers
Microsoft Azure
Border Gateway Protocol
Cloud Engineering
Cyber Security
Data Centers
Dynamic Host Configuration Protocol
Network Address Translation
Domain Name System (DNS)
Fault Tolerance
+36 more
Identity and Access Management
IT Management
IPv4
IPv6
Intrusion Detection and Prevention
Intrusion Detection Systems
Virtual Private Networks (VPN)
Multi-protocol Systems
Network Security
Multicasting
NetFlow
Routing
Network Segmentation
Network Service
Network Time Protocols
Open Shortest Path First (OSPF)
Remote Access Technology
Zero Trust Network Access
Security Information and Event Management
Wide Area Networks
WAN Optimization
Web Applications
Private Cloud Environment
Computer Networking Systems
Google Cloud
Load Balancing
In-Plane Switching (IPS)
F5 GTM
Software Security
BIG-IP Local Traffic Manager (LTM)
Firewalls (Computer Science)
Juniper
Information Technology
Wireless Technologies
Fortinet
Firewall Services Module
Job description
- Translate high-level business strategic objectives and goals into Enterprise IT requirements and conceptual designs.
- Develop and support comprehensive solutions that meet requirements and align with HPE’s global network security and strategy using Juniper SRX platforms.
- Develop and maintain a multi-year strategic network and security architecture roadmap, incorporating Zero Trust and firewall-based segmentation models.
- Lead end-to-end network and security architecture across global platforms ensuring secure, high-performing, fault-tolerant, and resilient environments.
Segmentation & Zero Trust Responsibilities (Juniper SRX Focus)
- Architect and implement network segmentation strategies using Juniper SRX firewalls across data center, campus, and cloud environments to limit lateral movement and enforce least-privilege access.
- Design and operationalize Zero Trust Architecture (ZTA) principles, integrating identity, application, and network-based policy enforcement using firewall controls.
- Collaborate with application owners to discover, validate, and map application dependencies to enable policy-driven segmentation via firewall rules and security zones.
- Define and enforce granular security policies using zone-based segmentation, VRFs, and SRX policy constructs across hybrid environments.
- Integrate segmentation with firewalls, SIEM, IAM, EDR/XDR, and cloud-native controls for unified policy enforcement.
- Lead adoption and standardization of Juniper SRX as the primary segmentation enforcement platform across enterprise environments.
- Develop segmentation governance models, policy lifecycle management, and compliance alignment (CIS/NIST/Zero Trust frameworks)., * Participate in network security design reviews and ensure all implementations meet enterprise security standards.
- Analyze business requirements to design and implement security across data centers, campus networks, and hybrid environments.
- Provide ongoing risk metrics, control effectiveness tracking, and security posture reporting.
- Conduct and support internal and external security audits and compliance assessments.
- Maintain awareness of emerging threats and update policies accordingly.
- Develop and manage policies, processes, and procedures ensuring reliability, availability, and security of network systems.
- Manage and optimize Security Information and Event Management (SIEM) systems.
- Collaborate with Cyber Security, infrastructure, and application teams toward compliance and operational excellence.
Requirements
- Strong hands-on experience in designing and implementing network segmentation using enterprise firewalls (Juniper SRX preferred) in complex environments.
- Proven capability to build application-aware firewall policies based on traffic flow analysis.
- Experience with policy design, enforcement, monitoring, and optimization in firewall-based segmentation environments.
- Strong understanding of east-west traffic inspection, security zoning, and firewall-enforced segmentation.
- Familiarity with Zero Trust Network Access (ZTNA) and identity-driven access models., * Strong experience managing LAN/WAN security technologies, including firewalls, IDS/IPS, SIEM, VPN, and NAC.
- Expertise in firewall architecture and design with strong hands-on experience in Juniper SRX (primary), along with Fortinet and Palo Alto.
- Deep expertise in:
- Security zones, policies, NAT, routing
- Application control and threat prevention
- High-availability clustering and scale design
- Experience securing public and private cloud (AWS, Azure, Google Cloud Platform) environments.
- Design and implementation of Web Application and API Protection (WAAP) solutions.
- Strong experience in proxy (forward/reverse), load balancing, and application security integration.
- Experience with SDN and SD-WAN architectures, including segmentation use cases., * Strong knowledge of:
- Routing protocols: BGP, OSPF, RIP, MPLS
- Network services: DNS, DHCP, NTP
- IPv4/IPv6 architecture and traffic management
- Experience in QoS, NetFlow, ACLs, NAT, multicast, and wireless technologies (802.11 variants).
- Experience with F5 GTM/LTM, VPN technologies, and Internet proxy solutions., + Aruba, Arista, Juniper switching
- Firewalls, WAN optimization, IDS/IPS, DLP
- Strong understanding of structured cabling and network facilities., * Bachelor’s Degree in Computer Science, Network Engineering, or related field (or equivalent experience).
- 10+ years of experience in global network security environments.
- Preferred certifications:
- CCNP / CCIE
- JNCIS/JNCIP/JNCIE (Juniper SRX focus preferred)
- Security certifications (CISSP, CISM, or equivalent) are a plus
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