Load balancing Load Balancer Engineer F5 LTM, GTM & AVI

Cloudxtreme; Hyderabad, Chennai District, Bengaluru; On-site; INR 1,500,000 - 2,100,000; Full time

Job summary

Cloudxtreme is seeking an experienced Load Balancer Engineer in Hyderabad to design, implement, operate and troubleshoot enterprise-grade load balancing solutions. The role focuses on high availability, performance, and resiliency for business-critical applications.

You will work with F5 BIG-IP LTM, F5 GTM/DNS, and AVI Load Balancer, collaborating with cross-functional teams on onboarding, migrations, and DR activities. Strong troubleshooting and documentation skills are essential.

Qualifications

• 6–8 years of experience in load balancer technologies.
• Hands-on experience with F5 BIG-IP LTM.
• Hands-on experience with F5 GTM / DNS.
• Hands-on experience with AVI / VMware NSX Advanced Load Balancer.
• Strong understanding of TCP/IP, HTTP/HTTPS, DNS, SSL/TLS.
• Experience in enterprise production environments.

Responsibilities

• Design, configure, and manage enterprise load balancing solutions using F5 BIG-IP and AVI Load Balancer.
• Implement highly available and scalable application delivery architectures.
• Provide L2/L3 operational support, incident resolution, and root cause analysis.
• Perform performance tuning, health monitoring, and traffic optimization.
• Support application onboarding, migrations, upgrades, and DR activities.
• Work closely with application, network, security, and infrastructure teams.
• Maintain documentation, SOPs, and run books.
• Participate in on-call support and planned maintenance activities.

Skills

F5 BIG-IP LTM

F5 GTM / DNS

AVI / VMware NSX Advanced Load Bal Bal

TCP/IP, HTTP/HTTPS, DNS, TLS

Automation & IaC (Ansible/REST/Terrafo

Tools

Ansible

REST APIs

Terraform

Job description

Role & responsibilities

Role Overview

We are looking for an experienced Load Balancer Engineer with strong hands-on expertise in F5 BIG-IP LTM, F5 GTM (DNS/GSLB) and Avi Load Balancer (VMware NSX Advanced Load Balancer). The role involves designing, implementing, operating, and troubleshooting enterprise-scale load balancing solutions to ensure high availability, performance, scalability, and resiliency of business-critical applications.

Key Responsibilities

• Design, configure, and manage enterprise load balancing solutions using F5 BIG-IP and AVI Load Balancer
• Implement highly available and scalable application delivery architectures
• Provide L2/L3 operational support, incident resolution, and root cause analysis
• Perform performance tuning, health monitoring, and traffic optimization
• Support application onboarding, migrations, upgrades, and DR activities
• Work closely with application, network, security, and infrastructure teams
• Maintain documentation, SOPs, and run books
• Participate in on-call support and planned maintenance activities

Detailed Technology Responsibilities

F5 BIG-IP Local Traffic Manager (LTM)

Traffic Management & Configuration

• Virtual Servers (Standard, Performance L4)
• Pools and Pool Members
• Health Monitors
• HTTP / HTTPS / TCP / UDP / ICMP
• Custom send/receive string monitors
• Load balancing methods
• Round Robin, Least Connections, Ratio, Fastest, Priority Group Activation

Session & Traffic Optimization

• Persistence Profiles
• Source IP
• Cookie (Insert, Rewrite, Passive)
• Universal persistence
• OneConnect profiles (connection reuse)
• TCP profiles (LAN / WAN optimized)
• HTTP profiles (header insertion, X-Forwarded-For)
• Compression and caching profiles

SSL / TLS Management

• Client-side and Server-side SSL profiles
• SSL offloading and SSL re-encryption
• Certificate lifecycle management (CSR creation, renewals)
• Cipher suite hardening and TLS 1.2 / TLS 1.3 configuration
• Mutual TLS (mTLS)

Networking & High Availability

• SNAT (Auto Map, SNAT Pools)
• VLANs, Self IPs (floating and non-floating)
• Route Domains
• Device Service Clustering (DSC)
• Active/Standby and Active/Active HA
• Config Sync and state mirroring
• Failover testing and validation
• UCS backup and restore

Extensibility & Troubleshooting

• iRules (traffic steering, redirects, header manipulation)
• tcpdump and packet-level troubleshooting
• Log analysis and performance diagnostics

F5 BIG-IP – GTM / DNS (Global Traffic Manager)

GSLB & DNS Services

• Configuration of Global Server Load Balancing (GSLB)
• Wide IPs (A, AAAA, CNAME)
• GTM Pools and Pool Members
• Datacenters and Servers

Traffic Steering & Resiliency

• Topology-based routing
• Geographic and proximity-based load balancing
• Availability and performance-based traffic distribution
• Integration with LTM for health monitoring

DR & Business Continuity

DNS-based failover for disaster recovery

Multi-datacenter and multi-region traffic management

DR drills and validation of failover behavior

Monitoring & Operations

DNS query flow troubleshooting

Monitor tuning and traffic validation

Coordination with application teams during outages

AVI Load Balancer (VMware NSX Advanced Load Balancer)

Core AVI Architecture

• Avi Controller deployment and management
• Service Engine (SE) configuration and lifecycle management
• SE Groups and capacity planning

Load Balancing & Application Delivery

• Virtual Services (VIPs)
• Pools and Pool Members
• Health Monitors (HTTP, HTTPS, TCP)
• Load balancing algorithms
• Persistence profiles
• SSL profiles and certificate management

Automation & Analytics

• Avi Analytics and dashboards for real-time visibility
• Traffic flow analysis and performance monitoring
• Autoscaling of Service Engines
• Alerting and proactive issue detection

Deployment & Integration

• Integration with VMware environments
• Hybrid and on-prem deployment models
• Application onboarding and migration from legacy load balancers

Troubleshooting

• L4/L7 traffic analysis
• Controller and Service Engine logs
• Performance bottleneck identification

Required Skills & Qualifications

Must-Have

• 6–8 years of experience in load balancer technologies
• Strong hands-on experience with F5 BIG-IP LTM
• Strong hands-on experience with F5 GTM / DNS
• Hands-on experience with AVI / VMware NSX Advanced Load Balancer
• Strong understanding of TCP/IP, HTTP/HTTPS, DNS, SSL/TLS
• Experience in enterprise production environments

Good to Have

• Automation using Ansible, REST APIs, or Terraform
• Exposure to cloud load balancers (AWS / Azure / GCP)
• Experience with monitoring and observability tools
• ITIL-based operations experience

Certifications (Preferred)

• F5 Certified Administrator (201)
• F5 CTS – LTM
• VMware NSX / AVI certifications