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Tech Lead – SOC Responder

Job in Sheffield, South Yorkshire, S5, England, UK
Listing for: Colt Technology Services
Full Time position
Listed on 2025-12-30
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer
Job Description & How to Apply Below

Colt is the New Standard in high bandwidth network and voice services for enterprises and wholesale customers in Europe, Asia and North America’s largest business hubs. With a global reach but a deep local presence, Colt is big enough to deliver and small enough to care.

Why we need this role?

Colt Technology Services SOC is seeking a Tech Lead - SOC Responder. This is an opportunity to meaningfully contribute to a highly visible security operations function with global impact upon Colt, business units, partners, and customers. While working as part of this team, the successful individual will provide world class incident response functions to detect, protect, respond, and sustain operations within cyberspace.

What

you will do :

Support SOC Manager to deliver the following

  • SIEM, IR tools platform management including all design, implementation and administration activities , Use cases preparation and implementation, connector deployment, maintenance & health checks
  • Responsible for operational activities, Technology escalation support, Security Solution assessment, build activities , existing Service maturing and Build activities assist
  • Analyse potential infrastructure security incidents to determine if incident qualifies as a legitimate security breach
  • Establishing and governing the security incident response processes, investigations and security operational processes.
  • Maintenance and enhancement of formal service catalogue, service descriptions, targets and performance against these.
  • Ensure security services, tools and platforms are adequately maintained.
  • Monitoring of and reporting on the effectiveness of our security enforcing technologies.
  • Identification and ongoing monitoring of specific security risks and KPIs and production of management information to ensure Colt receives value from key security investments / services.
  • Contribute to design, development and maintenance of security standards and controls.
  • Align team's goals and plan with Colt’s long term priorities and strategy.
  • Develop and grow the talent and people capability within the security teams.
What We're Looking For?
  • 6+ years Information Security Incident Response experience with a focus on detection and response to malicious activity using log data from various sources preferred.
  • Strong Networking and Systems experience, preferably in an Enterprise environment
  • Strong understanding of Information Security and the threat landscape surrounding enterprise systems.
  • Strong Scripting experience (python, powershell, Unix shell)
  • Demonstrated experience working in all phases of the SDLC
  • Deep understanding and experience using cyber security operations, security monitoring, endpoint (EDR), Network, and SIEM Tools.
  • Prior SOC experience a plus
  • Extensive knowledge of network and server security protocols, technologies, and products.
  • Industry recognized certifications (CISSP, GCIH, GCFA, OSCP, etc) preferred
  • Strong oral and written communication skills.
  • Relentless curiosity and attention to detail
  • Ability to learn quickly and leverage prior experiences to effectively solve current security challenges.
  • Refusing to accept the status quo
  • Degree in Information Technology, Engineering or similar
  • SIEM management - Desirable to have some advanced Certification from SIEM vendor on products such as Arc Sight , MS Sentinel or Logrhythem
What We Offer You

Looking to make a mark?

At Colt, you’ll make a difference. Because around here, we empower people. We don’t tell you what to do.

Instead, we employ people we trust, who come together across the globe to create intelligent solutions.

Our global teams are full of ambitious, driven people, all working together towards one shared purpose : to put the power of the digital universe in the hands of our customers wherever, whenever and however they want.

We give our people the opportunity to inspire and lead teams, and work on projects that connect people, cities, businesses, and ideas. We want you to help us change the world, for the better.

Diversity and inclusion
  • Inclusion and valuing diversity of thought and experience are at the heart of our culture here m day one, you’ll be encouraged to be yourself because we believe that’s what…
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