• 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 NetScaler 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

• Design and implement advanced BGP policies (path selection, community strings, filtering) to optimize multihoming and peering traffic across multiple IXPs. • Design, configure, and maintain the MPLS core, including LDP and RSVP-TE, and implement L3 VPN services (VRFs) and L2VPNs (VPLS/VPWS) for enterprise customers. • Perform Traffic Engineering (TE) using RSVP-TE to ensure deterministic paths and apply QoS policies (DiffServ over MPLS) to prioritize critical services (voice and video). • Implement high-availability and fast-convergence mechanisms such as BFD (Bidirectional Forwarding Detection) and MPLS FRR (Fast Reroute), targeting maximum SLA (five nines, 99.999%). • Manage edge routers (Provider Edge - PE) and Carrier-Grade NAT (CGN) solutions, and design the transition to IPv6 (Dual Stack or DS-Lite). • Lead the resolution of complex incidents involving packet loss, microbursts, high latency, and protocol failures (BGP session flapping, OSPF/IS-IS adjacency issues).

• Support add/move/change (MAC) activities across production financial-markets networks • Configure and troubleshoot Layer‑2 and Layer‑3 network services • Assist with BGP, OSPF, and IS‑IS routing changes and troubleshooting • Support NAT configuration and fault isolation (static and dynamic NAT) • Assist with IP multicast (IGMP, PIM) used for market data distribution • Perform packet capture and traffic analysis (tcpdump, Wireshark or equivalent) • Assist with Layer‑1 troubleshooting including physical connectivity and latency-sensitive paths • Follow disciplined change, documentation, and operational processes • Work with senior engineers on automation-enabled configuration and validation

Job Description At Boeing, we innovate and collaborate to make the world a better place. We're committed to fostering an environment for every teammate that's welcoming, respectful and inclusive, with great opportunity for professional growth. Find your future with us. Boeing Phantom Works has an exciting opportunity for a Senior Network Designer to join us as part of the Virtual Warfare Center team located in Berkeley, MO. The Virtual Warfare Center's Infrastructure team is responsible for the design, maintenance, and operation of the computing, networking, audio visual, and physical environment. The VWC has several locations across the United States dedicated to large scale Modeling & Simulation engagements. Position Responsibilities: Leads the identification, analysis and documentation of requirements for network transport technologies and services. Basic Qualifications (Required Skills and Experience): Active Top Secret Clearance 9+ years related work experience or an equivalent combination of technical education and experience Experience with Design, Implementation and Troubleshooting of Local Area Networks (LAN) and Wide Area Networks (WAN) Experience with Cisco routers and switches & Cisco IOS implementations Experience utilizing Transmission Control Protocol/Internet Protocol (TCP/IP) network protocols Preferred Qualifications (Desired Skills and Experience): CCNA or other Cisco Certification Security+ Certified (or similar certification meeting DoD Directive 8570.01 Certification Requirements) SCI eligibility pre-hire highly preferred Drug Free Workplace: Boeing is a Drug Free Workplace where post offer applicants and employees are subject to testing for marijuana, cocaine, opioids, amphetamines, PCP, and alcohol when criteria is met as outlined in our policies. Pay & Benefits: At Boeing, we strive to deliver a Total Rewards package that will attract, engage and retain the top talent. Elements of the Total Rewards package include competitive base pay and variable compensation opportunities. The Boeing Company also provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work. The specific programs and options available to any given employee may vary depending on eligibility factors such as geographic location, date of hire, and the applicability of collective bargaining agreements. Pay is based upon candidate experience and qualifications, as well as market and business considerations. The Boeing 401(k) helps you save for your future, with contributions from Boeing that can help you grow your retirement savings. Our best-in-class retirement benefit features: Best in class 401(k) plan: we'll match your contributions dollar for dollar, up to 10% of eligible pay with Immediate 100% vesting Student Loan Match: The Boeing 401(k) Student Loan Match allows eligible enrolled U.S. employees to have their qualified student loan debt payments counted, along with any match-eligible contributions they make, for purposes of determining the Company Match to employees' Boeing 401(k) accounts. Summary pay ranges: Senior (Level 4): $119,850 - $162,150 Applications for this position will be accepted until Feb. 24, 2026 Export Control Requirements: This position must meet U.S. export control compliance requirements. To meet U.S. export control compliance requirements, a "U.S. Person" as defined by 22 C.F.R. §120.62 is required. "U.S. Person" includes U.S. Citizen, U.S. National, lawful permanent resident, refugee, or asylee. Export Control Details: US based job, US Person required Relocation This position offers relocation based on candidate eligibility. Security Clearance This position requires an active U.S. Top Secret Security Clearance (U.S. Citizenship Required). (A U.S. Security Clearance that has been active in the past 24 months is considered active) Visa Sponsorship Employer will not sponsor applicants for employment visa status. Shift This position is for 1st shift Equal Opportunity Employer: Boeing is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, national origin, gender, sexual orientation, gender identity, age, physical or mental disability, genetic factors, military/veteran status or other characteristics protected by law.