Senior F5 Network & Security Architect

Tech Mahindra; Sydney; On-site; AUD 140,000 - 230,000; Full time

Job summary

Tech Mahindra in Sydney, Australia seeks an experienced Network Security Architect specializing in F5 technologies. You will lead end-to-end design and delivery of F5-based solutions, architect DNS systems, and enforce robust security controls. Collaboration across multiple teams and direct customer engagement are key.

APAC regional deployments are desirable. The role emphasizes automation, disaster resilience, and security hardening, with a focus on enterprise and ISP environments.

Qualifications

• 7+ years in network infrastructure, security architecture, or application delivery roles.
• Proven track record delivering F5 professional services to enterprise and/or ISP clients.
• Experience with large scale migrations (DNS migrations, CGNAT deployments, WAF rollouts).
• Regional project implementation experience across APAC is highly desirable.

Responsibilities

• Lead end to end design, implementation, and delivery of F5 based network and security solutions (LTM, DNS/GTM, ASM/AWAF, SSLO, CGNAT, AFM, PEM).
• Architect and implement DNS solutions focusing on performance, scalability, and fault tolerance.
• Design and enforce DNS and application security controls to protect against DDoS, WAF threats, and DNS exploits.
• Produce and maintain HLD, LLD, security design docs, runbooks, and SOPs.
• Collaborate with network, infrastructure, platform, and security teams to deliver cohesive solutions.
• Drive high availability and failover architecture design with zero downtime resilience.
• Provide expert troubleshooting, optimization, and post-implementation support across enterprise and ISP environments.
• Define professional services scoping requirements and engage directly with customers.
• Champion automation practices using Terraform, AS3/iRules, and related tooling.
• Implement security hardening, RBAC, secure logging, and compliance controls across F5 platforms.

Skills

F5 BIG IP platforms

LTM

DNS/GTM

ASM/AWAF

SSLO

CGNAT

AFM

PEM

BIG IQ CM

OSPF

BGP

Terraform

iRules

RADIUS

TACACS+

Tools

VMware

Wireshark

tcpdump

Job description

Tech Mahindra in Sydney, Australia seeks an experienced Network Security Architect specializing in F5 technologies. You will lead end-to-end design and delivery of F5-based solutions, architect DNS systems, and enforce robust security controls. Collaboration across multiple teams and direct customer engagement are key.

APAC regional deployments are desirable. The role emphasizes automation, disaster resilience, and security hardening, with a focus on enterprise and ISP environments.