F5 iRules Scripting With TCL

The Senior ADC Migration Engineer will be responsible for the end-to-end migration of complex Application Delivery Controller (ADC) configurations from Citrix NetScaler to F5 BIG-IP platforms. A key focus of this role will involve expert analysis, translation, and re-implementation of custom Citrix LUA scripts into equivalent F5 iRules Tcl, as well as leveraging other F5 native features. This role requires deep technical expertise in both Citrix NetScaler and F5 BIG-IP, along with strong scripting and problem-solving abilities. The responsibilities include conducting a thorough analysis of existing Citrix NetScaler configurations, including Virtual Servers, Services, Policies, Profiles, and custom LUA scripts to understand their functionality and dependencies. Expertly analyzing complex Citrix LUA scripts and translating their functionality into optimized F5 iRules Tcl or alternative F5 features. Designing, configuring, and implementing equivalent F5 BIG-IP configurations, primarily focusing on LTM (Local Traffic Manager) and APM (Access Policy Manager) objects. Mapping and converting Citrix policies and profiles to their F5 counterparts. Developing and executing comprehensive test plans to ensure functional parity and optimal performance post-migration, including load testing and security validation. Creating detailed documentation of migrated configurations, iRules, and architectural changes. Diagnosing and resolving complex issues arising during the migration process and post-migration. Working closely with application owners, network architects, security teams, and project managers to ensure seamless migration and minimal business disruption. Advocating and implementing F5 best practices for security, performance, and maintainability. Potentially mentoring junior team members on F5 BIG-IP technologies and migration strategies. Required Skills and Qualifications: - Bachelor's degree in Computer Science, Information Technology, or a related field. - Minimum of 7 years of hands-on experience with Application Delivery Controllers (ADCs). - Extensive experience (5 years) with Citrix NetScaler/ADC platforms, including advanced configuration, policy creation, and expert-level proficiency in Citrix LUA scripting. - Extensive experience (5 years) with F5 BIG-IP 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 (TCP/IP, HTTPS, DNS, SSL/TLS). - Strong command of Tcl scripting language for iRules development. - Strong understanding of security concepts related to ADCs, SSL offloading, authentication/authorization. - Familiarity with automation tools and scripting (e.g., Python, Ansible) for ADC configuration management is a plus.,