VP, Network Security Engineer

Jefferies is seeking a Network Security Engineer to join as a Vice President in the Information Security team with accountability for researching, designing, engineering, implementing, and supporting network security. This role is hands-on and requires deep technical expertise across network security and segmentation, automation, DevOps practices and emerging AI/LLM driven capabilities. The engineer will work closely with our infrastructure, application, and security teams to implement our existing and future network security & segmentation tools, drive automation and self-service models and influence security architecture decisions while protecting the firm’s assets. The ideal candidate will be knowledgeable with Integrating Automation (Python, LLM’s) into the Network Security stack of tools and services. They will also have experience in: Management of Next-Generation Firewalls (Palo Alto & ZScaler preferred), Network Segmentation (Illumio preferred) WAF, IPS, NDR, NAC, etc. Most importantly, the ideal candidate must be extremely eager to learn new technologies and able to execute. The role will also have an opportunity to work with subject matter experts not only within security, but across infrastructure, network, development, and business teams. We look to hire people who are comfortable in working with minimal supervision as part of a team that has consistently delivers ground-breaking and innovative solutions in one of the most exciting and fast-moving areas of the financial markets vertical. We need people who can prioritize and effectively communicate complex issues.Primary Responsibilities:The Network Security Engineer will play a critical role in the architecture, development, deployment, and management of Jefferies’s Network Security Program as part of the global information security team. Utilize LLM/AI and automation that build Processes to improve/audit/secure the Jefferies environment from a Network Security & Segmentation perspective.Work in conjunction with the Networking Security Engineering team on the architecture, deployment, management of Jefferies global network segmentation deployment and strategy with the focus on security architectureDeploy and implement network security through the Palo Aito Firewalls, and the llumio product for Applications and Endpoints.Work independently and part of a team to analyze and troubleshoot escalated issues for Palo Alto Firewalls, GlobalProtect VPN, Cloudflare WAF, Network Detection and Response technologies, Network Access Control, ISE, Web-Browser Isolation, Illumio, Network Security Policy Management, and other related Network Security Platforms. Efficiently troubleshoot/prioritize issues and create a culture of root cause analysis.Work closely with the Network Engineering and Operations teams, the Security Engineering and Operations teams to support and integrate security at every level into the networkWork with Infrastructure and Applications Teams to align the Network Security Policies to the needs and expectations of each Team and the Company as a whole.Required Background:10+ years of technical experience in networking, network security.Experience with Automation, Python, LLM’sWorking knowledge on building and implementing a network automation design that automates networking tasks across multiple vendors and platforms.Significant experience with Computer Networks, Firewalls (Palo Alto) including GlobalProtect, Security Policies, Micro-Segmentation(Illumio), WAF (Cloudflare or equivalent), NAC (Cisco ISE or equivalent), , etc Proficient with network troubleshooting tools (sniffer, syslog, NetFlow, TCPDUMP, Wireshark etc.)Demonstrated knowledge with Intrusion Detection, Incident Response, Data Encryption, Network Access Controls, Threat Management, and proper IT related Security Controls.Working knowledge of the OSI model, subnetting, including CIDR notationManage multiple projects simultaneously and can adapt to changing business needsWork well with cross functional global and remote teamsSelf-disciplined, self-starter who can provide leadership and mentor others while resolving complex incidents and delivering projectsAbility to analyze complex problems, propose effective solutions and understand and apply business vision and directionAbility to be called upon 24/7 in case of emergenciesAbility and willingness to learn new things in a fast-paced environmentDesirable Skills:Hands-on experience deploying and managing an Illumio environment. Illumio Core Assosciate/Specialist/Expert: SaaS or On-Prem, CCNA/CCNP Routing & Switching, Palo Alto Networks Security certifications (PCSNE), Security+, CCNA Security, or CISSP.Previous experience with Checkpoint, Fortinet, Proofpoint, Cloudflare, F5 Silverline, SSL Certificate management, Palo Alto Networks Prisma Access, or other Zero Trust/SASE products a plus. Primary Location Full Time Salary Range of $185,000 - $200,000. Jefferies is a leading global, full-service investment banking and capital markets firm that provides advisory, sales and trading, research, and wealth and asset management services. With more than 40 offices around the world, we offer insights and expertise to investors, companies, and governments.At Jefferies, we are committed to building a culture that provides opportunities for all employees regardless of our differences and supports a workforce that is reflective of the communities where we work and live. As a result, we are able to pool our collective insights and intelligence to provide fresh and innovative thinking for our clients.Jefferies is committed to creating and sustaining a workforce that welcomes individuals from all backgrounds to apply. Our employment decisions are made without regard to race, creed, color, national origin, ancestry, religion, pregnancy, age, medical condition, physical or mental disability, marital status, domestic partner status, sex, sexual orientation, gender, gender identity or expression, veteran or military status, genetic information, reproductive health decisions, or any other factor protected by applicable law. We are committed to hiring the most qualified applicants and complying with all federal, state, and local equal employment opportunity laws. As part of this commitment, Jefferies will extend reasonable accommodation to individuals with disabilities, as required by applicable law.The salary offered will take into consideration an individual’s experience level and qualifications. In addition to salary, Jefferies Financial Group is proud to offer a comprehensive benefits package to eligible, full-time employees or part-time employees, who are scheduled to work at least 30 hours or more per week, including an annual discretionary incentive and retention bonus, competitive employee benefits, including: medical, dental & vision coverage; 401(k); life, accident, and disability insurance; and wellness programs. Jefferies also offers paid time off packages that include planned time off (e.g., vacation), unplanned time off (e.g., sick leave), and paid holidays, and for full-time employees, paid parental leave.Full timePosting Date: 2026-03-23