Senior Security Engineer I

Butterworths Limited Company; Farringdon; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading cybersecurity firm in the United Kingdom is seeking a Senior Security Engineer to conduct research and design for a dedicated project. The ideal candidate will have hands-on expertise in vulnerability management and incident response tools, along with a strong background in information security practices. Key responsibilities include monitoring security tools, documenting security requirements, and supporting compliance with ISO-27001 security controls. The company offers comprehensive health benefits, retirement plans, and a focus on employee wellbeing.

Benefits

Comprehensive health benefits

401(k) with match

Wellness platform and incentives

Paid Time Off

Family benefits

Qualifications

• Experience with vulnerability and compliance changes
• Solid understanding of network security and secure application development principles
• Familiarity with compliance frameworks like ISO 27001

Responsibilities

• Review and analyse outputs from vulnerability and compliance scans
• Monitor and respond to alerts from the SIEM platform
• Define and document security requirements for new development

Skills

Experience in information security or security operations

Expertise in security tools like Qualys, SIEM, AV/EDR

Strong analytical and problem-solving skills

Communication of security risks to technical and non-technical audiences

Education

Security certifications (e.g., Security+, CEH, GSEC, CISSP)

Tools

Qualys

SIEM platforms (such as Splunk or Sentinel)

Antivirus / Endpoint Detection and Response (AV/EDR)

Job description

About the Role

The Senior Security Engineer will conduct research, design, and engineering tasks for a dedicated project in the European Union. This role requires the ability to identify, investigate, and resolve ISO-27001 security controls, along with hands-on expertise in Endpoint Detection & Response and Vulnerability and Compliance Management tools.

Responsibilities

• Review and analyse outputs from Qualys, or equivalent, vulnerability and compliance scans.
• Actively monitor and respond to alerts from our SIEM (Security Information and Event Management) platform.
• Monitor and react to activity from Antivirus and EDR (Endpoint Detection and Response) tools.
• Define and document security requirements for new development efforts.
• Provide support to Commercial team members to ensure security is considered in product planning and delivery.
• Perform production security validation of infrastructure, application, and network changes to ensure they meet internal policies and standards.
• Extract and compile audit evidence for internal Security Plans and support external ISO audits and certifications.
• Work cross-functionally with IT, DevOps, and business teams to drive security improvements.
• Perform other duties as required.

Requirements

• Experience in information security or security operations, typically demonstrated over several years.
• Practical experience with security tools, including Qualys, SIEM platforms (such as Splunk or Sentinel), and antivirus / endpoint detection and response (AV / EDR) solutions.
• Solid understanding of network security, infrastructure hardening, and secure application development principles.
• Familiarity with compliance frameworks, such as ISO 27001.
• Ability to communicate security risks and recommendations clearly to both technical and non-technical audiences, in writing and verbally.
• Strong analytical and problem-solving skills.

Preferred Qualifications

• Security certifications (e.g., Security+, CEH, GSEC, CISSP) or active pursuit of such credentials.
• Experience supporting audits and preparing evidence for compliance and certification processes.
• Experience collaborating with cross-functional development or product teams.

Working for you

We know that your wellbeing and happiness are key to a long and successful career. These are some of the benefits we are delighted to offer :

• Health Benefits : Comprehensive, multi-carrier program for medical, dental and vision benefits
• Retirement Benefits : 401(k) with match and an Employee Share Purchase Plan
• Wellbeing : Wellness platform with incentives, Headspace app subscription, Employee Assistance and Time-off Programs
• Short-and-Long Term Disability, Life and Accidental Death Insurance, Critical Illness, and Hospital Indemnity
• Family Benefits, including bonding and family care leaves, adoption and surrogacy benefits
• Health Savings, Health Care, Dependent Care and Commuter Spending Accounts
• In addition to annual Paid Time Off, we offer up to two days of paid leave each to participate in Employee Resource Groups and to volunteer with your charity of choice.

We are committed to providing a fair and accessible hiring process. If you have a disability or other need that requires accommodation or adjustment, please let us know by completing our or please contact 1-855-833-5120. Criminals may pose as recruiters asking for money or personal information. We never request money or banking details from job applicants. Learn more about spotting and avoiding scams . Please read our .