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Salary
≈ $56k – $99k per year (Estimated)
Location
In office (London)
Seniority
Senior · 7+ years exp
Visa
Licensed UK visa sponsor

Confirmed on the employer's own hiring board on Oct 9, 2026. First seen by Alion on Aug 12, 2026. Jane Street scores B on the Alion truth index.

Overview
Company
Impact
Profile match
Jane Street (Jane Street Capital) is a quantitative trading firm and liquidity provider specializing in automated market making, algorithmic execution, and high-frequency trading. Headquartered in New York, New York, the firm operates major regional hubs in London, Hong Kong, Singapore, and Amsterdam. Its core activities involve deploying proprietary quantitative research, machine learning models, and low-latency infrastructure to facilitate continuous trading across exchange-traded funds (ETFs), equities, options, fixed income, futures, and derivative products across more than 200 trading venues globally.

About the position

We are looking for a Unified Communications (UC) Engineer to help grow, monitor and manage our global voice and video infrastructure. This role sits within our larger IT group and will require you to deliver smart solutions in a fast-paced environment without disrupting the daily workflow.

The UC team is responsible for all tasks and infrastructure related to collaboration and telephony. Projects include improving tooling and monitoring, deploying UC products and services, and executing software and hardware configuration changes globally, all while minimising downtime for various collaboration services.

Our UC Engineers are experts at multitasking, monitoring alarms generated by our voice and video systems, juggling project-related tasks and serving as an escalation point for users and other technology groups. You’ll interface daily with various tech teams across the firm-including IT Operations, Cybersecurity and Networking-to provide capacity planning, develop standards and best practices and improve documentation across our global UC infrastructure. 

The right candidate will be passionate about solving complex problems and supporting users with robust and flexible technical solutions. 

About you

  • Have 7+ years of in-depth experience configuring and supporting the Cisco UC and Collaboration Product Suite in a multi-cluster environment, including:
    • Cisco Unified Communications Manager versions 14+
    • Cisco Meeting Server
    • Cisco Expressway
  • Have excellent knowledge of SIP, including implementing Session Border Controllers and PSTN SIP trunking
  • Deeply experienced with upgrading and maintaining Cisco UC products, including supporting phones, softphones and video conferencing endpoints
  • Knowledgeable about UC compliance products, and experienced with modern voice recording platforms (Verint, NiCE, Red Box, etc.) and messaging archiving products (Movius, LeapXpert, Smarsh, etc.)
  • Knowledgeable about Cisco APIs related to UC products, and experienced with creating API automations using Python, PowerShell, etc.
  • Experienced with integrating cloud-based conferencing technologies (Webex, Zoom, Teams, etc.) with on-premise infrastructure
  • Comfortable troubleshooting custom API-based integrations with UC products and services
  • Able to collect and interpret log files, collaborate with support partners to solve problems while maintaining system stability and properly manage expectations with colleagues and users
  • Familiar with the virtualisation of Cisco UC applications on enterprise-grade servers (HPE, Dell, Cisco, etc.)
  • Have a strong understanding of current security standards and expectations, and an ability to troubleshoot and use creative thinking to resolve issues
  • Fluent in English

If you're a recruiting agency and want to partner with us, please reach out to [email protected]

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