Infrastructure Senior Tech Analyst

Citi•Mississauga, ON

8d•CA$94,300 - CA$141,500•Hybrid

About The Position

Citi Markets Technology is seeking a highly motivated IT professional to join our Global Markets Platform team. This role involves collaboration with electronic-trading platforms and infrastructure, dealing with a wide range of teams including Traders, Application Developers, Product Owners, and Engineering. The team is engineering the future of global finance, working on systems that handle $5 trillion daily across 180+ countries. This is an opportunity to join a team where your work influences economies, your ideas drive innovation, and your growth is supported by mentorship, continuous learning, and flexibility with potential hybrid work opportunities. Markets Technology at Citi is undergoing a significant transformation to build a best-in-class global platform for execution, prime, clearing, and cross-products. The role will involve re-engineering the technology estate for world-leading performance and resiliency, enabling new capabilities in advanced execution, global market connectivity, and modernized post-trade, clearing, and margin processes. The ambition is to deliver a seamlessly integrated, highly automated platform that drives outstanding client outcomes and accelerates growth. As part of the team, you will collaborate closely with high-caliber engineers and deeply engaged business and product partners to define and deliver the next generation of Markets technology at Citi.

Requirements

Bachelor's degree in Computer Science, Information Technology, or a related field, or equivalent practical experience.
Experience in Capital Markets Low Latency Network Infrastructure workflows will be highly relevant to this role.
5+ years of experience in network engineering, with a focus on enterprise-level networks.
Strong proficiency in routing protocols (BGP, OSPF, EIGRP), switching technologies (VLANs, STP, HSRP/VRRP), and VPN technologies (IPSec, SSL VPN).
Solid understanding of network security principles and best practices.
Familiarity with network virtualization technologies (e.g., SD-WAN, NSX).
Excellent problem-solving, analytical, and communication skills.
Technical Expertise: TCP/IP, BGP, OSPF, EIGRP, VLANs, STP, MPLS, DNS, DHCP, SNMP, QoS, IPSec, SSL VPN, SD-WAN.
Hardware: Cisco (Routers, Switches, Meraki), Juniper, Palo Alto Networks, Fortinet, F5.
Security: Firewalls, IDS/IPS, VPN, NAC, SIEM.
Tools: Wireshark, Nmap, Traceroute, Ping, Network Management Systems.
Operating Systems: Linux, Windows.
Soft Skills: Critical Thinking, Problem Solving, Communication (Verbal & Written), Teamwork, Adaptability, Mentorship.
Bachelor’s/University degree or equivalent experience in Capital Markets Low Latency Network Infrastructure workflows.

Nice To Haves

Relevant industry certifications (e.g., CCNP, JNCIP, CCNA, PCNSE).
Experience with cloud networking (AWS VPC, Azure VNet, Google Cloud Networking).
Proficiency in scripting and automation (e.g., Python, Ansible, Terraform).
Experience with load balancers (e.g., F5 BIG-IP, A10 Networks).
Experience in a regulated industry (e.g., finance, healthcare).

Responsibilities

Design and implement scalable, secure, and highly available network architectures.
Plan, configure, and deploy network hardware (routers, switches, firewalls, load balancers, wireless access points) from various vendors (e.g., Cisco, Juniper, Palo Alto, F5).
Develop and maintain comprehensive network documentation, including diagrams, configurations, and procedures.
Diagnose and resolve complex network issues, including connectivity problems, performance degradation, and security incidents.
Provide expert-level support for all network-related problems, collaborating with other IT teams as needed.
Participate in after-hours support for network change activities.
Implement and manage network security measures, including firewalls, VPNs, and access control lists (ACLs).
Ensure compliance with organizational security policies, published standards, and industry best practices.
Identify opportunities for network automation to improve efficiency and reduce manual errors.
Develop and implement scripts (e.g., Python, Ansible) for network configuration, monitoring, and management tasks.
Work closely with other infrastructure teams (server, virtualization, cloud) to ensure seamless integration and operation of systems.
Participate in project planning and provide technical expertise for new initiatives.