Network Engineer

Job Title: Network Engineer F5 / Network Security

Location: Berlin, CT
Work Model: 100% Onsite
Employment Type: Contract

Job Summary

STAFFXPERT LLC is seeking a Network Engineer F5 / Network Security on behalf of our client in Berlin, CT. This role is ideal for a highly skilled network professional with extensive experience in F5 BIG-IP technologies, enterprise load balancing, and network security. The successful candidate will be responsible for designing, implementing, maintaining, and optimizing mission-critical F5 environments while ensuring high availability, security, and performance across enterprise applications and infrastructure.

Key Responsibilities

• Design, implement, and support F5 BIG-IP solutions, with a strong focus on LTM (Local Traffic Manager).

• Configure, manage, and maintain F5 platforms including LTM, GTM/DNS, APM, and BIG-IQ.

• Develop, test, and troubleshoot complex F5 iRules to support application delivery requirements.

• Perform advanced troubleshooting of load-balancing, traffic-routing, and application connectivity issues.

• Analyze network traffic and diagnose performance issues using tools such as TCPDump and SSLDump.

• Configure and optimize SSL/TLS settings, custom cipher suites, SSL offloading, and traffic management policies.

• Manage health monitors, persistence profiles, virtual servers, pools, and application delivery services.

• Execute TMOS upgrades, platform migrations, patching, and vulnerability remediation activities.

• Collaborate with infrastructure, application, and security teams to support enterprise initiatives.

• Participate in on-call support and operational escalation processes.

• Assist with technical documentation, solution design, and Statements of Work (SOWs).

Required Qualifications

• 10+ years of experience in Network Engineering, Application Delivery, or Network Security.

• Strong hands-on expertise with F5 BIG-IP LTM in large-scale enterprise environments.

• Experience supporting F5 GTM/DNS, APM, and BIG-IQ platforms.

• Advanced knowledge of load-balancing technologies and application delivery networking.

• Strong understanding of TCP/IP, DNS, HTTP/HTTPS, SSL/TLS, and network security concepts.

• Experience troubleshooting complex production issues and performing root-cause analysis.

• Hands-on experience with SSL offloading, OneConnect, persistence methods, HTTP profiles, and health monitoring configurations.

• Experience performing F5 platform upgrades, migrations, and security remediation activities.

• Strong communication skills and the ability to work effectively with cross-functional teams.

Preferred Qualifications

• Experience with cloud networking and security services in AWS and/or Microsoft Azure.

• F5 certifications such as F5 Certified BIG-IP Administrator (F5-CA) or related credentials.

• Experience supporting highly available, mission-critical enterprise environments.