Sundayy
Network Security Engineer
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About The Company
Jane Street is a globally recognized trading firm known for its innovative approach to financial markets and its commitment to leveraging technology and quantitative research. The company operates in a highly dynamic environment, supporting a broad spectrum of trading strategies across multiple asset classes. With a focus on collaboration, continuous learning, and technological excellence, Jane Street fosters a culture that values intellectual humility, openness, and ongoing improvement. Its infrastructure relies on sophisticated distributed systems and a resilient, multi-vendor network infrastructure designed to support high-volume, low-latency trading activities worldwide.
About The Role
We are seeking an experienced Network Engineer to join our Network Security team. In this role, you will be responsible for maintaining, scaling, and enhancing our network security infrastructure through hands-on operations, strategic design, and implementation. The ideal candidate will possess a strong foundation in networking fundamentals, with extensive experience working with security appliances such as firewalls and proxies. You will collaborate closely with network engineering, cybersecurity, application owners, and traders to ensure our network infrastructure remains secure, efficient, and adaptable to evolving business needs.
Your responsibilities will include:
- Designing and deploying security perimeters
- Managing network segmentation
- Evaluating new security platforms
- Improving observability and automation of network systems
Your expertise will help us proactively identify vulnerabilities, mitigate threats, and streamline network operations, all while supporting the firm’s commitment to operational excellence and security. This position offers an exciting opportunity to work within a collaborative environment that values innovation and continuous improvement, contributing directly to the company's robust and secure network architecture.
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Qualifications
- 7+ years of experience operating and deploying network infrastructure
- Proficiency with routing and network protocols (OSPF, BGP, PIM-SM)
- Experience troubleshooting transport protocols (TCP/UDP)
- Strong understanding of firewall hardware architecture, performance metrics, and functional components
- Experience with firewall configuration and troubleshooting
- Knowledge of Public Key Infrastructure (PKI) and related security technologies
- Understanding of modern encryption techniques and security protocols
- Ability to quickly learn and adapt to new technologies and tools
- Proficiency in scripting and automation to enhance network observability and support
- Experience with overlay networks such as EVPN and VxLAN (preferred)
- Proficiency in at least one programming language (preferred)
- Excellent communication skills and fluency in English
- Ability to prioritize tasks and manage multiple projects effectively
- Collaborative mindset with a team-oriented approach
Responsibilities
- Design, deploy, and manage network security infrastructure, including firewalls, proxies, and segmentation strategies
- Collaborate with Network Engineering to implement security perimeters and adjacent network infrastructure
- Manage and evolve network segmentation, DMZs, and other security zones to ensure optimal protection
- Evaluate and conduct lab testing of new security platforms and solutions
- Work closely with Cybersecurity teams to detect, analyze, and mitigate network threats and vulnerabilities
- Interface with application owners and traders to facilitate secure business workflows and network access
- Enhance network infrastructure observability through scripting, automation, and improved monitoring tools
- Develop, update, and maintain comprehensive network security documentation and procedures
- Proactively identify areas for system improvement and implement solutions to increase efficiency and security
- Stay updated on emerging security threats, industry best practices, and new technologies relevant to network security
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Benefits
- Competitive salary and performance-based incentives
- Comprehensive health insurance plans
- Retirement savings plans with company contributions
- Opportunities for professional development and continuous learning
- Collaborative and innovative work environment
- Flexible work arrangements and work-life balance initiatives
- Access to cutting-edge technology and tools
- Paid time off and holidays
Equal Opportunity
Jane Street is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. We believe that a diverse workforce enhances our ability to innovate and succeed, and we are dedicated to fostering an equitable workplace for everyone.
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