Network Developer

Responsibilities

Design, create, and maintain automations to manage Enterprise network infrastructure.
Design, configure, install, and manage enterprise network infrastructure, including routers, switches, firewalls, and load balancers.
Plan and schedule the installation or modification of network hardware and software.
Troubleshooting knowledge of multi-VRF Cisco routers and enterprise environments.
Troubleshoot and analyze TCP/IP network traffic, including TCP 3-way handshake, TCP window scaling, and MSS.
Capture and analyze network packets using TCPDump (Linux) and Flow Monitor Capture (Cisco ASR).
Implement multi-protocol routing solutions with BGP, OSPF, and VRF-based networks.
Use Wireshark, TCPDump, and other diagnostic tools for network performance analysis.
Perform TLS/SSL handshake troubleshooting and security configuration.
Configure and maintain firewalls (Palo Alto, Cisco), including security policies, VPNs, and intrusion prevention systems (IPS).
Implement AAA technologies (Cisco ISE, LDAP, OTP) for access management.
Ensure certificate management and encryption, including TLS/SSL and OpenSSL operations.
Install, configure, and troubleshoot digital certificates on F5 LTM/BIG-IP DNS/APM/ASM appliances.
Implement F5 Client Constrained Delegation (C3D) for certificate delegation.
Enable certificate-based authentication using Client-SSL profiles and APM policies.
Deploy and maintain network monitoring, alerting, and repair systems in production environments.
Optimize and troubleshoot load balancing solutions and DNS-based traffic management.

Requirements

Experience with network automation/scripting (REST APIs, Bash/C-shell, Python).
Ability to obtain a Secret clearance w/Tier 5 investigation
Strong knowledge of OSI and TCP/IP network models, TCP 3-way handshake, and window scaling.
Knowledge of routing protocols (BGP, OSPF, LISP).
Experience with Palo Alto and Cisco firewalls.
Experience with F5 LTM for load balancing and security.
Familiarity with network packet capture tools (TCPDump, Wireshark).
Experience in TLS/SSL security, OpenSSL, and certificate management.
Experience working with Unix/Linux-based systems.

Preferred

Knowledge of Client Constrained Delegation (C3D).
Knowledge of F5 ASM, APM, BIG-IP DNS.
Understanding of essential network services (DNS, SMTP, NTP, IMAP, SNMP).
Experience deploying and troubleshooting load-balanced services and SSL certificate management.