F5 iRules Scripting - TCL

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The Senior ADC Migration Engineer will be responsible for the endtoend migration of complex Application Delivery Controller ADC configurations from Citrix NetScaler to F5 BIGIP platforms A key focus of this role will be the expert analysis translation and reimplementation of custom Citrix LUA scripts into equivalent F5 iRules Tcl and leveraging other F5 native features This role requires deep technical expertise in both Citrix NetScaler and F5 BIGIP along with strong scripting and problemsolving abilities.

Key Responsibilities:

• Discovery and Assessment Conduct thorough analysis of existing Citrix NetScaler configurations including Virtual Servers Services Policies Profiles and custom LUA scripts to understand their functionality and dependencies
• LUA Script to iRule Translation Expertly analyze complex Citrix LUA scripts and translate their functionality into optimized F5 iRules Tcl or alternative F5 features eg Local Traffic Policies data groups Access Policy Manager profiles where appropriate
• Configuration Migration Design configure and implement equivalent F5 BIGIP configurations primarily focusing on LTM Local Traffic Manager and APM Access Policy Manager objects
• Policy and Profile Conversion Map and convert Citrix policies eg rewrite responder content switching and profiles eg HTTP SSL to their F5 counterparts
• Testing and Validation Develop and execute comprehensive test plans to ensure functional parity and optimal performance postmigration including load testing and security validation
• Documentation Create detailed documentation of migrated configurations iRules and architectural changes
• Troubleshooting Diagnose and resolve complex issues arising during the migration process and postmigration
• Collaboration Work closely with application owners network architects security teams and project managers to ensure seamless migration and minimal business disruption
• Best Practices Advocate and implement F5 best practices for security performance and maintainability
• Mentorship Potentially mentor junior team members on F5 BIGIP technologies and migration strategies
• Required Skills and Qualifications
• Education Bachelors degree in Computer Science Information Technology or a related field.

Experience :

• Minimum of 7 years of handson experience with Application Delivery Controllers ADCs
• Extensive experience 5 years with Citrix NetScalerADC platforms including advanced configuration policy creation and expertlevel proficiency in Citrix LUA scripting
• Extensive experience 5 years with F5 BIGIP platforms including LTM and strong proficiency in F5 iRules Tcl Experience with APM is highly desirable
• Demonstrable experience in successfully migrating ADC configurations between different vendor platforms Citrix to F5 preferred
• Technical Proficiency
• Deep understanding of networking protocols TCPIP HTTPS DNS SSLTLS
• Strong command of Tcl scripting language for iRules development
• Strong understanding of security concepts related to ADCs SSL offloading authenticationauthorization
• Familiarity with automation tools and scripting eg Python Ansible for ADC configuration management is a plus
• Knowledge of payment industry protocols such as GICC and POSrelated protocols is a significant advantage