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Ultra Low Latency Network Specialist

Susquehanna International Group Dublin, Ireland
Posted 16 hours ago Hybrid Permanent DOE
Posted by
Shannen Hayden

SIG is one of the largest proprietary trading technology firms in the world. Every day, we manage millions of transactions on exchanges all over the world.

Working as an Ultra Low Latency Trading Network Specialist you will:

  • Recreate complex network topologies in our dedicated lab environment.
  • Provide critical thinking to complex networking problems and work as part of a team to help solve them.
  • Work with stakeholders to identify and formulate lab testing scenarios.
  • Use the dedicated lab and tools (some provided, some you will write yourself) to test the scenarios and prove/disprove hypothesis.
  • Identify, recommend, and drive the implementation of optimizations in the production trading environment from the results of the testing. In dept analysis of production and lab network data, from many sources and formats.
  • Be an expert on all aspects of the low latency trading environment, from Fibres, Optics, L1 replication, Packet capture technologies, all the way up to network protocols such as UDP, TCP, BGP
  • Help drive testing automation efforts.
  • Work with external vendors and companies on new products, features and technologies to keep SIG at the forefront of Ultra Low Latency Trading.


Key qualities and skills we would love you to have:

  • Highly motivated, deeply curious about all aspects of networking in a trading environment, meticulous, and articulate.
  • Excellent network configuration, performance monitoring and testing, trouble shooting and analysis skills
  • Expert in the following network protocols BGP, IGMP, PIM, Ethernet, IP, UDP, TCP, LLDP
  • Strong knowledge in the area of packet capture technologies, timestamping and time synchronization. (White Rabbit, PTP, PPS, Wireshark)
  • Experience of both Cisco and Arista switches and devices. Good Python scripting experience.
Job ID  Ultra Low Latency
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