SRE II, Load Balancing

Career Opportunities: SRE II, Load Balancing (12490)

Requisition
12490
-Posted
09/16/2026

- IP Tech

- Telecommunications

- USA.NY.Bethpage-1111 Stewart

Are you looking to Optimize your life? Start your exciting path to a rewarding career today!

We are Optimum, a leader in the fast-paced world of connectivity, and we're seeking driven and enthusiastic professionals to join our team, empower lives, fuel businesses, and drive innovation. Connectivity is no longer a luxury, but a necessity. A career at Optimum means you'll be enabling progress and enhancing lives by providing reliable, high-speed connectivity solutions that keep the world connected.

Our successes, now and in the future, are powered by our amazing product, a commitment to our people and culture, and the connections we make in our communities.

If you are resourceful, collaborative, and passionate about delivering consistent excellence, Optimum is for you!

We are looking for a Network SRE with a "reliability mindset" to join our infrastructure team. It is a highly specialized, hands-on engineering position focused entirely on application delivery and load balancing infrastructure.

You will effectively function as our resident Load Balancing Engineer, maintaining and expanding our high-performance traffic management architecture using primarily F5 equipment. As a Senior Network SRE, you will also help us transition from manual configurations to automated, resilient, and observable network operations, particularly regarding VIP provisioning and certificate life cycles.

• Core Engineering: Configure, deploy, and troubleshoot load balancing infrastructure, focusing heavily on F5 BIG-IP Local Traffic Manager (LTM) and Global Traffic Manager (GTM/DNS).
• Incident Response: Act as the first line of defense for complex application delivery issues. Investigate VIP health, traffic routing anomalies, SSL/TLS handshake failures, and latency issues using a blameless root-cause analysis approach.
• Reliability & Automation: Move away from manual changes. Help build and run Python scripts, Ansible playbooks, or API-driven workflows to automate VIP creation, pool management, and network auditing.
• Observability: Improve our "eyes on the network" by tuning monitoring tools and F5 telemetry to detect traffic issues before they impact end users.
• Maintenance: Plan and execute load balancer maintenance windows (code upgrades, hardware replacements, certificate renewals) with a focus on zero downtime.

The Stack

• Primary Vendor: F5 Networks (BIG-IP, TMOS)
• Secondary Vendor: Cisco (Nexus and Catalyst environments)
• Core Technologies: LTM, GTM/DNS, SSL/TLS Offloading, HTTP/HTTPS, TCP/UDP
• Automation: Python, Ansible, REST APIs, Git, AS3

• Bachelor's Degree or equivalent experience
• 5+ years' of relevant experience
• F5 Fluency: Strong hands‑on experience with F5 BIG-IP/BIG-IQ infrastructure. You must be comfortable navigating both the GUI and tmsh command-line interface, managing Virtual Servers, Pools, Profiles, and iRules.
• Application Delivery Fundamentals: Deep understanding of the TCP/IP stack, HTTP/HTTPS protocol behaviors, DNS resolution, and SSL/TLS certificate management.
• Troubleshooting Logic: Ability to trace a packet from client to server and identify where it drops. You understand ping, trace route, and are highly proficient with tcpdump/Wireshark and F5 logging.
• Linux/Unix Literacy: Comfortable working in a Linux shell environment.

Nice-to-Have (Bonus Points):

• Cisco
  
  Experience:
  
  Familiarity with Cisco routing and switching (particularly Nexus infrastructure) to understand the broader network context.
• SRE/Dev Ops
  
  Skills:
  
  Scripting in Python or experience automating load balancer configurations via REST APIs or other automation frameworks.
• Certif…