Senior Network Engineer

You could be the one who changes everything for our 28 million members by using technology to improve health outcomes around the world. As a diversified, national organization, Centene's technology professionals have access to competitive benefits including a fresh perspective on workplace flexibility.

The Senior Engineer – Certificates & Load Balancing is responsible for ensuring the stability, security, and reliability of enterprise certificate services and Citrix Net Scaler load balancing environments. This role exists to prevent certificate-related outages, strengthen operational governance, and provide senior-level technical support for SSL/TLS and application delivery services. The position bridges network, security, and application teams to deliver predictable certificate lifecycle management and resilient load-balanced platforms, shifting the organization from reactive issue response to proactive service assurance.

• Monitoring certificate expiration alerts and proactively engaging application teams
• Issuing, renewing, and validating certificates (internal and external)
• Troubleshooting SSL/TLS handshake failures, certificate chain issues, or trust errors
• Reviewing CSRs for accuracy (SANs, key sizes, usage types, etc.)
• Validating successful certificate binding post-change (browser, OpenSSL, CLI validation)
• Investigating certificate-related incidents or production escalations

• Installing and binding certificates to Net Scaler virtual servers (VLSB)
• Managing GSLB configurations and SSL profiles
• Updating SNIPs, VIPs, service groups, and monitors as needed
• Supporting load balancer changes during maintenance windows
• Troubleshooting Layer 4–7 connectivity or persistence issues

• Participating in change management and validation processes
• Running reports or dashboards on expiring certificates and compliance posture
• Partnering with application teams to improve certificate hygiene and ownership
• Documenting repeatable procedures and improving runbooks
• Identifying automation opportunities to reduce manual certificate work

• Acting as an escalation point for complex SSL or load balancing issues
• Advising teams on certificate standards, cipher policies, and secure configurations
• Supporting audits or security reviews related to encryption and PKI
• Performs other duties as assigned
• Complies with all policies and standards

A Bachelor's degree in a quantitative or business field (e.g., statistics, mathematics, engineering, computer science) and Requires 4 – 6 years of related experience.

Or equivalent experience acquired through accomplishments of applicable knowledge, duties, scope and skill reflective of the level of this position.

• Certificate Lifecycle Management (PKI / SSL / TLS) - Deep understanding of certificate issuance, renewal, replacement, revocation, and validation across enterprise environments.
• Citrix Net Scaler / ADC Expertise - Hands‑on experience supporting and troubleshooting Net Scaler environments, including GSLB, VLSB (vServers), SNIPs, VIPs, service groups, and SSL profiles.
• SSL/TLS Configuration & Troubleshooting - Ability to diagnose certificate chain issues, cipher mismatches, handshake failures, and trust problems across load balancers, web servers, and applications.
• Load Balancing & Application Delivery Concepts - Strong grasp of Layer 4–7 traffic flow, health monitoring, persistence, and high‑availability design.
• Operational Support & Change Management - Experience supporting production environments, participating in maintenance windows, and validating changes with minimal service impact.
• Automation & Tooling (Preferred) - Familiarity with scripting, APIs, or automation frameworks to support certificate workflows, reporting, or operational efficiency.

• Intermediate - Seeks to acquire knowledge in area of specialty
• Intermediate - Ability to identify basic problems and procedural irregularities, collect data, establish facts, and draw valid conclusions
• Intermediate - Ability to work independently
• Intermediate - Demonstrated analytical skills
• Intermediate -…