F5 Developer

Renaissance Infosystems Pte Ltd; Sydney; On-site; AUD 150,000 - 200,000; Full time

Job summary

Renaissance Info Systems in Sydney is seeking an expert F5 engineer to lead deployment, upgrades, and optimization of F5 LTM, DNS, and ASM across critical production environments. You will design and implement secure application delivery, participate in architecture reviews, and drive automation initiatives.

The role requires hands-on experience with F5 technologies, networking basics, and cloud networking familiarity.

Qualifications

• Minimum 8 years of Network Security and Application Delivery experience.
• At least 5 years of hands-on F5 engineering and implementation experience.
• Proven experience delivering F5 deployment, migration, and transformation projects.
• Strong stakeholder engagement and customer-facing communication skills.
• Experience supporting business-critical production platforms and services.

Responsibilities

• Act as the primary F5 SME supporting the customer's F5 infrastructure environment.
• Design, implement, configure, and maintain F5 application delivery and security services.
• Manage platform lifecycle activities including upgrades, patches, migrations, and technology refresh initiatives.
• Ensure platform stability, availability, scalability, and performance.
• Perform capacity planning and platform optimization activities.
• Support high-availability and disaster recovery configurations.
• Provide Level 3 technical support for complex F5-related incidents and service requests.
• Troubleshoot and resolve critical application delivery and load-balancing issues.
• Conduct root cause analysis and implement permanent corrective measures.
• Participate in major incident response and service restoration activities.
• Maintain operational runbooks and support documentation.
• Participate in solution design workshops and architecture review sessions.
• Validate designs against standards; review requirements for deployments.
• Provide technical recommendations to project and engineering teams.
• Support risk assessments and implementation planning activities.
• Lead F5 implementation activities across multiple projects.
• Execute configuration changes, migrations, and platform deployment activities.
• Develop implementation plans, rollback procedures, and testing approaches.
• Support application onboarding and production release activities.
• Participate in maintenance windows and scheduled change activities.
• Ensure security controls align with organizational standards.
• Support application security capabilities through F5 ASM.
• Implement traffic inspection and secure delivery controls.
• Support audit, compliance, and vulnerability remediation.
• Create and maintain design docs, procedures, and standards.
• Identify opportunities for automation and improvement.
• Contribute to continuous service improvement initiatives.

Skills

F5 BIG-IP LTM

F5 DNS/GTM

F5 Advanced WAF/ASM

SSL Offloading

Traffic Management

Application Delivery Networking

High Availability

Health Monitoring

Certificate Management

DNS Services

App Performance Optimization

TCP/IP

BGP/OSPF

VLANs/NAT/DNS/DHCP

Web Application Firewalls

SSL/TLS

Zero Trust & Secure Access

Cloud Networking (Azure/AWS)

Infrastructure as Code

Automation

DevOps/CI-CD

Security Architecture

Stakeholder Engagement

Education

Bachelor's degree or equivalent

Job description

About Us

Renaissance Info Systems is a technology and digital recruitment agency, connecting contract and permanent professionals with clients across Asia-Pacific.

We aim to differentiate ourselves through our level of responsiveness, and our understanding that comes from being an IT recruitment agency from the IT Industry. Our recruiters balance sophisticated and simple inter-personal techniques to assure a strong candidate network.

Know More

http://www.reninfo.com.au

Mode of Hiring

Permanent

Location

Sydney

Job Description

Key Responsibilities

• Act as the primary F5 SME supporting the customer's F5 infrastructure environment.
• Design, implement, configure, and maintain F5 application delivery and security services.
• Manage platform lifecycle activities including upgrades, patches, migrations, and technology refresh initiatives.
• Ensure platform stability, availability, scalability, and performance.
• Perform capacity planning and platform optimization activities.
• Support high-availability and disaster recovery configurations.

Operational Support

• Provide Level 3 technical support for complex F5-related incidents and service requests.
• Troubleshoot and resolve critical application delivery and load-balancing issues.
• Conduct root cause analysis and implement permanent corrective measures.
• Participate in major incident response and service restoration activities.
• Maintain operational runbooks and support documentation.

Design Reviews & Technical Governance

• Participate in solution design workshops and architecture review sessions.
• Validate technical designs against operational, security, and architectural standards.
• Review network, security, and application requirements for new service deployments.
• Provide technical recommendations and best-practice guidance to project and engineering teams.
• Support risk assessments and implementation planning activities.

Implementation & Project Delivery

• Lead F5 implementation activities across multiple projects and initiatives.
• Execute configuration changes, migrations, and platform deployment activities.
• Develop implementation plans, rollback procedures, and testing approaches.
• Support application onboarding and production release activities.
• Participate in maintenance windows and scheduled change activities.

Security & Compliance

• Ensure security controls are implemented in accordance with organizational standards.
• Support application security capabilities through F5 Advanced WAF / ASM.
• Implement traffic inspection, SSL services, and secure application delivery controls.
• Support audit, compliance, and vulnerability remediation activities.

Documentation & Process Improvement

• Create and maintain design documentation, operational procedures, and technical standards.
• Develop implementation guides and support playbooks.
• Identify opportunities for platform automation and operational improvement.
• Contribute to continuous service improvement initiatives.

Mandatory Technical Skills

F5 Technologies

Strong hands-on experience across:

• F5 BIG-IP LTM (Local Traffic Manager)
• F5 DNS / GTM
• F5 Advanced WAF (ASM)
• SSL Offloading
• Traffic Management
• Application Delivery Networking (ADN)
• High Availability Configurations
• Health Monitoring
• Certificate Management
• DNS Services
• Application Performance Optimization

Networking Technologies

• TCP/IP
• Routing & Switching
• BGP
• OSPF
• VLANs
• NAT
• DNS
• DHCP
• Application Networking
• Network Security Fundamentals

Security Technologies

• Web Application Firewalls
• SSL/TLS
• Secure Application Delivery
• Network Security Architecture
• Access Control Technologies

Preferred Skills

• Experience working within Telecommunications environments.
• Knowledge of Check Point, Fortinet, Palo Alto, or Cisco security platforms.
• Exposure to Cloud Networking (Azure and AWS).
• Experience with Infrastructure as Code and Automation.
• Knowledge of DevOps and CI/CD integration practices.
• Understanding of Zero Trust Architecture and Secure Access principles.

Certifications (Preferred)

One or more of the following:

• F5 Certified Administrator (F5-CA)
• F5 Certified Technical Specialist (F5-CTS)
• F5 Certified Solution Expert (F5-CSE)
• CCNP Enterprise
• CCNP Security
• CISSP

Experience Requirements

• Minimum 8 years of Network Security and Application Delivery experience.
• At least 5 years of hands-on F5 engineering and implementation experience.
• Proven experience delivering F5 deployment, migration, and transformation projects.
• Strong stakeholder engagement and customer-facing communication skills.
• Experience supporting business-critical production platforms and services.