Sr. Security Engineer (United Kingdom)

Intermedia Intelligent Communications; United Kingdom; On-site; GBP 70,000 - 80,000; Full time

Job summary

A leading cloud communications company is seeking a Senior Security Engineer in the United Kingdom. This role involves monitoring security alerts, investigating incidents, and contributing to security engineering. Strong experience with Windows and Linux, proficiency in scripting languages, and a degree in Computer Science are required. The ideal candidate excels in communication and documentation and will mentor junior team members. The compensation ranges from GBP 70,000 to GBP 80,000 annually.

Qualifications

• 5+ years of experience in a security engineering or operations role.
• Deep expertise in Windows and Linux operating systems.
• Strong understanding of networking fundamentals (TCP/IP, DNS, HTTP/S).
• Proficiency in one or more scripting languages such as Python, PowerShell.

Responsibilities

• Monitor and triage security alerts from SIEM and EDR.
• Investigate security incidents and determine root cause.
• Assist with security reviews related to infrastructure changes.
• Mentor junior team members and participate in security operations support.

Skills

Security Monitoring

Incident Response

Threat Detection

Documentation

Communication Skills

Education

Bachelor or Master's degree in Computer Science or related field

Tools

Python

PowerShell

Windows

Linux

AWS

Azure

GCP

Job description

Sr. Security Engineer (United Kingdom)

Department: IT Business Systems/Security

Employment Type: Full Time

Location: United Kingdom

Reporting To: Dylan Harrington

Compensation: GBP 70,000 - GBP 80,000 / year

Description

*ALL CANDIDATES MUST BE LOCATED IN THE UNITED KINGDOM*

About Intermedia

Are you looking for a company where YOUR VOICE is heard? Where you can MAKE A DIFFERENCE? Do you THRIVE in a FAST-PACED work environment? Do you wake up every morning EXCITED to work with GREAT PEOPLE and create SUCCESS TOGETHER? Then Intermedia is the place for you.

Intermedia has established itself as a leading provider of cloud communications and collaboration tech that allows companies to connect better. We have a strong track record of growth, profitability, and creating an environment where everyone matters. Everyone. While we are fast-paced and admittedly a bit intense, we promise that you won't be bored. You will find Intermedia is a place where you can indulge your passion for creating and supporting great cloud technology. What's more, we always look to promote from within and have many employees who have been with us 10, 15, and 20+ years!

Culture at Intermedia is built on teamwork and transparency. We hold each other accountable and always have each other's back!

About the role:

Intermedia's Information Security team is seeking a Senior Security Engineer with a strong passion for threat detection, incident response, and security engineering. The ideal candidate thrives in digging through data to find anomalies, identifying root causes, uncovering malicious activity, recommending corrective actions, and working cross-functionally to drive remediation and strategic improvements.

What you will be doing:

• Security Monitoring & Incident Response
  • Monitor and triage security alerts from SIEM, EDR, and other tools; elevate and respond as needed.
  • Investigate security incidents, determine root cause, document findings, and develop IOCs to prevent recurrence.
  • Support escalations from internal employees or customers with security-related concerns.
• Security Engineering & Tooling
  • Assist with security reviews related to infrastructure and system changes.
  • Build, enhance, and maintain internal security tooling and scripting repositories.
  • Contribute to the development of detection content, alert tuning, and automation pipelines.
• Strategic & Team Contributions
  • Drive annual security team goals and cross-functional initiatives.
  • Author and maintain clear, actionable documentation and knowledge bases.
  • Mentor junior team members and share expertise across the organization.
  • Participate in a rotating on-call schedule for security operations support.

What you will bring to the role:

• 5+ years of experience in a security engineering or operations role.
• Bachelor or Master's degree in Computer Science, Electrical Engineering, Computer Engineering, or equivalent related work experience
• Deep expertise in Windows and Linux operating systems.
• Proficiency in one or more scripting languages: Python, PowerShell, JavaScript, Bash.
• Strong understanding of networking fundamentals (TCP/IP, DNS, HTTP/S, etc.).
• Hands-on experience with cloud platforms (AWS, Azure, or GCP) - cloud security knowledge preferred.
• Familiarity with virtualization technologies and associated security controls.
• Demonstrated experience in at least one of the following:
  • Penetration Testing: Offensive security and exploitation techniques.
  • Digital Forensics: Host, network, or memory-based investigation.
  • Threat Hunting: Detection engineering and hypothesis-driven threat investigation.
• Knowledge of modern security tooling (SIEM, EDR, vulnerability management, SOAR).
• Strong documentation and communication skills; fluent in written and spoken English.

Diversity, Inclusion, and Equal Opportunity

We hire, promote, and compensate employees based on their ability to perform their job responsibilities, without regard to race, color, creed, religion, sex, gender, marital status, national origin, ancestry, age, citizenship, physical or mental disability, sexual orientation, or any other basis protected by applicable law (collectively referred to in our Code of Conduct as "Protected Classes"). We do not tolerate employment discrimination in the workplace, and we are committed to making reasonable accommodations for identified disabilities or other limitations as required by all applicable laws. We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status