Infoblox / F5 / DDI Engineer

Key Responsibilities:

• Administer, support, and enhance Infoblox DDI (DNS, DHCP, IPAM) infrastructure.
• Configure, troubleshoot, and maintain enterprise DNS and DHCP services.
• Provide administration and support for F5 BIG-IP platforms, including LTM and DNS modules.
• Execute load balancer configuration, application onboarding, and traffic management activities.
• Continuously monitor system performance, investigate and resolve incidents, and maintain high availability.
• Apply security controls and industry best practices for DNS, DHCP, IPAM, and F5 environments.
• Partner with network, security, and application teams to deliver projects and sustain operational support.

Required Skills:

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

DDI - IP Services: You can use the above JD, as it covers IP Services and below DDI as a combination of both skills.

Design, implement, administer, and support enterprise-level DNS, DHCP, and IP Address Management (IPAM) services. The ideal candidate should bring hands-on experience with DDI platforms such as Infoblox, BlueCat, or EfficientIP, along with strong networking and troubleshooting capabilities to keep critical IP services available, scalable, and secure.

Key Responsibilities

DDI Administration

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

Operations & Support

• Monitor DDI infrastructure and proactively remediate performance-related issues.
• Troubleshoot DNS resolution, DHCP assignment, and IP connectivity problems.
• Support incident, problem, and change management processes.
• Conduct root cause analysis (RCA) for recurring service disruptions.
• 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 tasks using PowerShell, Python, REST APIs, or Ansible.
• Create and maintain operational scripts and workflows.

Security & Compliance

• Apply DNS security best practices including DNSSEC, RPZ, and threat protection.
• Support enterprise security efforts connected to DNS and IP services.
• Participate in audits, compliance assessments, and vulnerability evaluations.
• Ensure adherence to organizational standards and policies.

F5 Load Balancer 

Role Summary

We are looking for an experienced F5 Load Balancer Engineer responsible for managing, supporting, troubleshooting, and optimizing F5 BIG-IP environments. The successful candidate will have 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.
• Build and maintain Virtual Servers, Pools, Nodes, Monitors, Profiles, Persistence, SNAT, and SSL configurations. 
• Perform Layer 2/Layer 3 troubleshooting and traffic-flow analysis.
• Implement, update, and troubleshoot iRules and traffic policies. 
• Configure DNS/GSLB services and manage Wide IPs using GTM.
• Monitor appliance health, capacity, performance, and overall availability of F5 systems.
• Address 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.
• Partner with F5 TAC for advanced troubleshooting and issues that impact services.
• Create and maintain technical documentation, SOPs, implementation plans, and operational reporting.

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)
• Good 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

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