Network Security Engineer

2 months ago

London, United Kingdom Jane Street Full time

About the Position
We are looking for an experienced Network Security Engineer who will help us maintain the team’s highest level of service and keep our network security levels ahead of our business demands, while pushing for more standardisation through automation.
Jane Street’s numerous distributed systems are built on an agile, reliable, multi-vendor network infrastructure that supports all traffic profiles from trading to internet connectivity. Enabling those systems to operate in a secure and auditable manner is a key mission of the Network Security team.
Strong communication and interpersonal skills will be needed to collaborate with colleagues across the firm globally. You will find and resolve issues, plan and execute deployments, and improve systems where possible. Additional responsibilities of this role will include:
Assessing our firewall policies against our security standards and business needs
Working closely with our Cybersecurity team to mitigate threats and vulnerabilities
Interacting with stakeholders to establish and push firewall policies
Troubleshooting issues by analysing packet captures and reviewing audit logs
Working closely with our Network Engineering team on DMZ designs and deployments
Contributing to support tasks and actively taking steps to improve the team's ability to monitor our systems effectively, through scripting and/or conveying requirements to our dedicated developers
Getting the details right and keeping good records will be critical in this role. Striving to improve the team through documentation and contributing to our monitoring and automation systems will be a must.
About You
Hands-on experience with firewall configuration and troubleshooting
Strong understanding of network security principles and technologies (e.g., TCP, ARP, BGP, OSPF, DHCP, DNS)
Experience designing a DMZ network
Motivated to automate workflows to increase efficiency
Strong ability to context switch and organise your workload
Clear communication skills and a high degree of customer service
A flexible and reliable team player who enjoys working in a collaborative environment
Proficiency in a programming language is preferred
Fluency in English is required
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