ETrading Infrastructure Systems Architect - Low Latency Engineering; Rates Tech

Overview

eTrading Infrastructure Systems Architect - Low Latency Engineering (Rates Tech)

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities.

Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.

We are looking for an industry-wide Senior Systems Architect (Infrastructure) who can provide leadership and direction for Change-The-Bank electronic trading infrastructure initiatives covering all technologies in this domain for Rates.

The role sits within Citi’s Global Markets:
High Performance Architectures–Infrastructure group. This team is responsible for electronic trading infrastructure architecture across all markets globally for the firm. It is composed of low latency Subject Matter Experts (North America, EMEA), Systems Architects (regional and asset class aligned) and an aligned initiative management function (Technical Project Manager). Technology is key to our business; this role will require you to drive innovation and technology adoption in a large multi-faceted and complex environment.

This Markets-Tech business-aligned tech resource will collaborate with the business, enterprise infrastructure, and security teams driving technical architecture and engineering of CTB and End of Vendor Support initiatives where we choose to innovate.

Reporting to the head of HPAi, the Systems Architect will be responsible for ensuring best-in-breed technology architecture and engineering are in alignment with business requirements. This will be done in collaboration with CISO and other teams and resource aligned to HPAi who represent Enterprise and CISO priorities and standards. Active collaboration with all parties is required to be successful. The resource should be able to effectively collaborate with the Markets-Tech Electronic Trading organization (our clients), steer other technology organizations directly or through influence, and enjoy hands-on work as an individual contributor.

The resource will leverage the full strength of the supporting non-ICG technology organizations (dedicated and non-dedicated to HPAi). The role is broad, requiring a resource that is not afraid to take on new challenges with a can-do attitude and an engineering mindset. You will show a deep desire to drive results and understand how technology primitives work and how to optimize them.

Low Latency Trading – Rates and Cross Markets domain-specific technology is required (as many as possible):

• Compute (Linux, CoreOS, tuning, kernel bypass technologies, core dump analysis)
• Network (R&S, cut-through, Multicast, SDN, BGP, L1-L3, PCAP analysis)
• HPC File Systems (Lustre, GPFS, Weka, DDN, Ceph)
• Interconnects (Infini Band, Slingshot, PCIe, NVLink, UALink, UPI, RoCE)
• HW (Server, FPGA, GPU, Memory, Cache, overclocking, cooling, ASIC, Quantum, NUMA)
• Dev Ops (Open Shift, Kubernetes, Dev Ops, Python, Perl, Shell, CI/CD)
• Programming (C, C++, Java, Rust, VHDL, Verilog)
• Time Sync (PTP, NTP, GPS, White Rabbit, SyncE)
• Wave (RF, Millimeter, Microwave, DWDM, Photonics)
• Storage (I/O, NAS, SAN, Object Store, SDS)
• Database (relational, columnar, graph, No
  
  SQL, architecture, tuning)
• Monitoring (SPANs, TAPS, OEO, Packet Brokers, Corvil, SNMP, FIX, Logs, ELK, Open Telemetry, Grafana, Prometheus)
• Messaging (TibRV, Solace, Aeron, ZeroMQ, Kafka, Multicast, Market data (TCP/UDP), Tibco, Exegy/Vela)
• Load Balancers (HW, SW)
• Security (Firewalls, PKI, TLS, IDS, Optical Encryption, AD, LDAP)
• Connectivity (WAN, Lucera, cross-connects, ECX, venue, client)
• Colo / Datacenter (Power, Space, Cage, Rack, Cabinet, Design)
• Excel (for advanced frameworks, data…