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Senior Network Engineer

Job in Belfast, County Antrim, BT1, Northern Ireland, UK
Listing for: Exegy
Full Time position
Listed on 2026-09-07
Job specializations:
  • IT/Tech
    Network Engineer, Systems Engineer, Cybersecurity, IT Support
Job Description & How to Apply Below
About Exegy Exegy is a global leader in intelligent market data, advanced trading systems, and future-proof technology. Exegy serves as a trusted partner to the complete ecosystem of the buy-side, sell-side, exchanges, and financial services technology firms around the globe. Headquartered in St. Louis with regional offices in North America, the UK/Europe and Asia Pacific, Exegy has the global footprint to deliver world-class support and managed services to its customer base of elite financial market participants.

Job Summary The Senior Network Engineer will play a crucial role in supporting Exegy’s network infrastructure. This role involves network administration, device maintenance, and collaboration with vendors to ensure the smooth operation of network services. The ideal candidate should possess a strong technical background, extensive experience with network equipment and services, and the ability to work effectively in a fast-paced environment while contributing to project planning and execution.

Responsibilities Provide day-to-day support & assistance to Exegy Network Engineering team on network issues across business critical Exegy Production, Corporate and Development networks

Perform day-to-day network administration and maintain all network and security devices and systems to allow Exegy Network Engineering team to concentrate on design and execution of network management handover for Super Feed, DMA and Metro products to relevant vendors

Work with vendors providing network support to troubleshoot and resolve issues or roll out changes to hosted production environments

Work with Exegy Network Engineers to plan and implement network changes to support business decisions

Our Ideal Candidate Has:

Solid technical background with 5+ years’ experience in a hosted services environment including infrastructure networks, hardware and telecommunications

Degree in Computer Science, Software or Electronic Engineering or other related discipline

Strong experience in installing, configuring and maintaining network services, equipment and devices

Proven experience with Juniper, Cisco, Arista switching

Experience with Mellanox Infiband switches a plus Multicast experience desired

Experience with RoCE a plus

Experience with routing protocols including but not limited to BGP / OSPFGood understanding of subnetting, VLANs, VLAN tagging, NATStrong experience configuring IPSec VPNs, GRE tunnelling

Demonstrate good network security practices

Ability to collaborate with stakeholders across a wide variety of teams in a fast-paced environment

Ability to gather relevant information systematically to troubleshoot and resolve issues

Capable of working effectively and efficiently in a team environment

Contribute to technical aspects of project delivery, planning and risk management

Effective communication, interpersonal and organizational skills

Datacenter experience including racking and patching of devices

Knowledge and experience configuring and maintaining Fortinet, Checkpoint, Juniper SRX, and Cisco ASA firewalls

Location Belfast Employment  Type Full time Location Type Hybrid Department Corporate  IT
Position Requirements
10+ Years work experience
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