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Senior Application Delivery & Security Engineer
Job in
Chelmsford, Middlesex County, Massachusetts, 01824, USA
Listed on 2026-11-06
Listing for:
Rockwell Automation
Full Time
position Listed on 2026-11-06
Job specializations:
-
IT/Tech
Cybersecurity, Systems Engineer
Job Description & How to Apply Below
We welcome all makers, forward thinkers, and problem solvers who are looking for a place to do their best work. And if that’s you we would love to have you join us!
Job Description As a Senior Application Delivery and Security Engineer, you will join our enterprise network and security team. In this role, you will own the design, security, and reliability of our application delivery services, built primarily on F5 BIG-IP Virtual Editions, with emphasis on Local Traffic Manager (LTM), BIG-IP DNS (GTM), and Advanced WAF (ASM).Web application security is the center of gravity for this position.
You will be the team's primary expert for ASM policy design, tuning, and troubleshooting, protecting the business critical web applications and APIs that run on the platform. This is a hands on engineering role for someone who has lived in ASM event logs, knows how to tighten a policy without breaking an application, and wants that depth recognized.
You will report to the IT Manager, Network and Security Engineering, and will work Hybrid in any of RA office based in Milwaukee or Mequon, WI OR Mayfield Heights, OH OR Chelmsford, MA or Eden Prairie, MN.
Primary Responsibilities:
Advanced WAF and ASM web application security (primary focus of the role):
Build and manage ASM and Advanced WAF security policies end to end, including policy creation, learning and tuning, signature management, and false positive remediation.
Protect web applications and APIs against the OWASP Top 10, malicious bot traffic, and layer 7 denial of service using native ASM controls.
Analyze ASM event logs and violation data to tune policies precisely, strengthening protection without disrupting legitimate application traffic.
Act as the go to resource for WAF policy strategy, enforcement decisions, and security incident troubleshooting.
F5 BIG-IP platform engineering and lifecycle:
Design, deploy, configure, and maintain F5 BIG-IP Virtual Edition instances across production and non production environments.
Perform upgrades, hotfixes, licensing, and lifecycle management for the F5 Virtual Edition estate.
Deploy and support Virtual Editions on hypervisor and cloud platforms.
Local Traffic Management (LTM):
Configure and support LTM virtual servers, pools, monitors, profiles, and persistence.
Implement SSL and TLS offload and certificate handling.
Write and troubleshoot iRules and LTM policies for advanced traffic steering.
Global Traffic Management (BIG-IP DNS / GTM):
Manage wide IPs, listeners, data centers, and global load balancing methods to deliver multisite availability and failover.
Troubleshooting, delivery, and operations:
Resolve complex application delivery issues using tcpdump, qkview, system logs, and packet level analysis.
Partner with application, network, and security teams to onboard new applications behind F5 services.
Create and maintain documentation, runbooks, and standard configurations.
Participate in change management and provide support for maintenance windows and escalations, including outside standard business hours when needed.
The Essentials
- You Will Have:
Bachelor's Degree in relevant field.
Legal authorization to work in the US is required. We will not sponsor individuals for employment visas, now or in the…
Position Requirements
10+ Years
work experience
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