J

Jefferies

Global investment banking and capital markets

Network Security Engineering Lead

Full-Time
$200k - $275k
Expert
Jersey City, NJ, USA
Remote
CybersecuritySecurity Engineering & Architecture
Company Does Not Provide H1B Sponsorship

About the job

Requirements
  • At least 15 years of technical experience in networking and network security.
  • Experience with automation, Python, and large language models.
  • Working knowledge of designing and implementing network automation across multiple vendors and platforms.
  • Significant experience with computer networks, Palo Alto firewalls including GlobalProtect, security policies, micro-segmentation with Illumio, web application firewalls such as Cloudflare, and network access control such as Cisco ISE.
  • Proficiency with network troubleshooting tools including sniffers, syslog, NetFlow, TCPDUMP, and Wireshark.
  • Knowledge of intrusion detection, incident response, data encryption, network access controls, threat management, and information technology security controls.
  • Working knowledge of the OSI model and subnetting, including CIDR notation.
  • Ability to manage multiple projects simultaneously and adapt to changing business needs.
  • Ability to work with cross-functional global and remote teams.
  • Ability to provide leadership and mentor others while resolving complex incidents and delivering projects.
  • Ability to analyze complex problems, propose effective solutions, and apply business vision and direction.
  • Availability to be called upon 24/7 in emergencies.
  • Ability and willingness to learn new technologies in a fast-paced environment.
Responsibilities
  • Research, design, engineer, implement, and support network security.
  • Develop and manage the Network Security Program as part of the global information security team, including architecture, development, deployment, and management.
  • Use large language models, artificial intelligence, and automation to build processes that improve, audit, and secure the environment from a network security and segmentation perspective.
  • Work with the Network Security Engineering team on architecture, deployment, and management of global network segmentation and its security architecture.
  • Deploy and implement network security using Palo Alto firewalls and Illumio for applications and endpoints.
  • Analyze and troubleshoot escalated issues across Palo Alto firewalls, GlobalProtect VPN, Cloudflare WAF, network detection and response technologies, network access control, Cisco ISE, web-browser isolation, Illumio, network security policy management, and related platforms.
  • Prioritize and resolve issues and establish a culture of root cause analysis.
  • Work with Network Engineering and Operations and Security Engineering and Operations to integrate security throughout the network.
  • Work with Infrastructure and Applications teams to align network security policies with team and company needs.
  • Drive automation and self-service models and contribute to security architecture decisions.
Desired Qualifications
  • Hands-on experience deploying and managing an Illumio environment.
  • Illumio Core Associate, Specialist, or Expert certification, whether SaaS or on-premises.
  • CCNA or CCNP Routing and Switching, Palo Alto Networks Security (PCSNE), Security+, CCNA Security, or CISSP certification.
  • Experience with Check Point, Fortinet, Proofpoint, Cloudflare, F5 Silverline, SSL certificate management, Palo Alto Networks Prisma Access, or other Zero Trust/SASE products.

About the company

Jefferies is a global, full‑service investment banking and capital markets firm that helps investors, companies, and governments with advisory services, sales and trading, research, and wealth and asset management. It uses a worldwide network of more than 40 offices to deliver market insights and financial solutions to clients. Its products include advisory services for mergers and restructurings, capital markets execution, securities research, and portfolio management for individuals and institutions. The goal is to guide clients through financial markets, raise capital, and grow wealth across geographies and asset classes.

Company Size

5,001-10,000

Company Stage

IPO

Headquarters

New York City, New York

Founded

1854

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Simplify's Take

What believers are saying

  • The SMBC joint venture launches in January 2027, opening Japan equities and ECM.
  • Q3 2026 advisory revenue rose 25% and equity underwriting jumped 69%.
  • Jefferies raised buyback authorization to $250 million and kept a $0.40 dividend.

What critics are saying

  • Asset-management revenue fell 55% sequentially in Q3 2026 after First Brands and Radiant World losses.
  • Western Alliance sued Jefferies in March 2026 over a $126.4 million unpaid loan.
  • Another First Brands-style scandal would cripple Jefferies' reputation and trading-client trust.

What makes Jefferies unique

  • SMBC now owns about 20%, giving Jefferies a powerful Japanese distribution alliance.
  • Jefferies posted record Q3 2026 investment-banking revenue of $1.33 billion.
  • Its equities franchise generated a quarterly record $626 million in Q3 2026.

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Benefits

Health Insurance

Life Insurance

Wellness Program

Company News

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