Infoblox DDI F5 Load Engineer

Key Responsibilities:

• Manage and support Infoblox DDI (DNS, DHCP, IPAM) infrastructure.
• Configure, troubleshoot, and maintain enterprise DNS and DHCP services.
• Administer and support F5 BIG-IP platforms, including LTM and DNS modules.
• Perform load balancer configuration, application onboarding, and traffic management.
• Monitor system performance, resolve incidents, and maintain high availability.
• Apply security controls and industry best practices across DNS, DHCP, IPAM, and F5 environments.
• Partner with network, security, and application teams to deliver projects and provide ongoing operational support.

Required Skills:

• Strong hands-on experience with Infoblox DDI (DNS, DHCP, IPAM).
• Experience with F5 BIG-IP (LTM, GTM/DNS) administration and troubleshooting.
• Solid knowledge of TCP/IP, routing, switching, and network security.

Design, implement, administer, and support enterprise-level DNS, DHCP, and IP Address Management (IPAM) services. The ideal candidate will bring practical experience with DDI platforms such as Infoblox, BlueCat, or EfficientIP and strong networking and troubleshooting skills to ensure the availability, scalability, and security of critical IP services.

Key Responsibilities

DDI Administration

• Manage and maintain enterprise DNS, DHCP, and IPAM infrastructure.
• Configure and administer DNS zones, records, delegations, forwarding, and conditional forwarding.
• Administer DHCP scopes, reservations, failover settings, and lease management.
• Manage IPAM databases, subnet allocation, and utilization tracking.
• Ensure high availability and resilience of DDI services.

Operations & Support

• Monitor DDI infrastructure and proactively address performance issues.
• Troubleshoot DNS resolution, DHCP assignments, and IP-related connectivity problems.
• Support incident, problem, and change management processes.
• Conduct root cause analysis (RCA) for recurring service interruptions.
• Provide L2/L3 support for DDI-related incidents.

Cloud & Automation

• Support DDI integration with Azure, AWS, and hybrid cloud environments.
• Automate DNS, DHCP, and IPAM processes using PowerShell, Python, REST APIs, or Ansible.
• Create and maintain operational scripts and workflows.

Security & Compliance

• Implement DNS security best practices including DNSSEC, RPZ, and threat protection.
• Support enterprise security initiatives related to DNS and IP services.
• Participate in audits, compliance reviews, and vulnerability assessments.
• Ensure alignment with organizational standards and policies.

F5 Load Balancer 

Role Summary

We are seeking an experienced F5 Load Balancer Engineer to manage, support, troubleshoot, and optimize F5 BIG-IP environments. The candidate must demonstrate strong expertise in F5 LTM, GTM/DNS, traffic management, load balancing, SSL offloading, and high-availability architectures.

Key Responsibilities

• Configure, administer, and troubleshoot F5 BIG-IP LTM and GTM environments.
• Create and maintain Virtual Servers, Pools, Nodes, Monitors, Profiles, Persistence, SNAT, and SSL configurations. 
• Perform Layer 2/Layer 3 troubleshooting and traffic-flow analysis.
• Implement, adjust, and troubleshoot iRules and traffic policies.  
• Configure DNS/GSLB services and manage Wide IPs using GTM.
• Monitor health, capacity, performance, and availability of F5 appliances.
• Manage critical incidents (P1/P2) and perform root cause analysis (RCA).
• Coordinate with application, server, network, security, and vendor teams to resolve issues.
• Conduct upgrades, patching, backup, restore, and HA synchronization activities.
• Collaborate with F5 TAC for advanced troubleshooting and service-impacting issues.
• Produce technical documentation, SOPs, implementation plans, and operational reports.

Required Skills

• Strong knowledge of TCP/IP, OSI Model, Routing & Switching.
• Hands-on experience with F5 BIG-IP LTM/GTM.
• Experience with:
• Virtual Servers
• Pools & Pool Members
• Health Monitors
• Persistence Profiles
• SSL Offloading
• SNAT/NAT
• iRules
• High Availability (HA)
• Strong understanding of DNS, GSLB, and application traffic flows.
• Packet capture and analysis using Wireshark/tcpdump.
• Knowledge of Linux fundamentals and web application architectures.
• Experience working in enterprise production environments.

Preferred Skills

• F5 ASM/WAF, APM, or Distributed Cloud (XC) knowledge.
• Exposure to Palo Alto, Check Point, Cisco, Fortinet firewalls.
• Automation using Ansible, Python, REST APIs.
• F5 Certifications (101/201/301 series)