It Security jobs in United Kingdom

Are you a cybersecurity professional with a solid foundation in threat detection and response, looking to deepen your impact in a dynamic IT environment? Do you have hands-on experience with Microsoft Sentinel and Microsoft Defender, and a passion for protecting systems and data from evolving threats?

We’re seeking an IT Security Analyst to join our innovative and fast-growing team at the trailblazing Rebels of Accountancy. In this role, you’ll take ownership of monitoring and responding to security incidents, fine-tuning detection rules, and enhancing our security operations using cutting-edge tools. You’ll collaborate closely with the wider tech team to ensure our digital environment remains secure, resilient, and compliant.

About the day to day…

As an IT Security Analyst, you will play a crucial role in maintaining and enhancing the security of our cloud and on-premises environments. Your responsibilities will include:

• Safeguard our infrastructure; implement and maintain security controls across Microsoft Azure, Microsoft 365, and on-premises systems
• Act as a point of contact for security-related queries, providing guidance and training to end-users and technical teams
• Maintain clear, comprehensive, and up-to-date documentation of security policies, procedures, incident response plans, and system configurations
• Work closely with our Security Operations Centre to monitor and investigate security alerts generated by Microsoft Sentinel and Microsoft Defender
• Collaborate with our SoC to develop, refine, and optimize detection rules and custom alerts, ensuring alerting mechanisms are aligned with evolving threat landscapes while reducing false positives and enhancing actionable insights
• Conduct regular vulnerability assessments, interpret scan results, and coordinate remediation efforts
• Investigate suspicious files and behaviors for malware; collaborate with vendors/internal teams to mitigate and prevent future infections
• Respond swiftly to potential threats by isolating affected systems, applying containment measures, and supporting recovery efforts to minimize business disruption
• Provide expert advice to internal teams on secure configurations and emerging threats, help embed security into project lifecycles and operational processes
• Stay informed on the latest threat trends, sharing relevant insights to proactively strengthen our security posture

At Cooper Parry, we’re in it together. All we ask of our people is that they play all in. You’ll continuously strive to keep learning – whether you’re a trainee or a Partner – and you’ll be brave, stepping out of your comfort zone to tackle new challenges. Above all, be nice. A simple notion, but an irreplaceable part of what makes CP, CP.

As an IT Security Analyst, we’re looking for a security-minded professional with a strong technical foundation and a proactive approach to problem-solving.

You’ll be an analytical thinker with investigative skills, able to interpret complex data and communicate complex concepts clearly to both technical and non-technical audiences. You’ll be able to manage and prioritise multiple tasks in a fast-paced and dynamic environment. Technically you’ll bring:

• Microsoft Security Stack: Microsoft Defender XDR and Microsoft Sentinel (incident investigation, alert tuning and threat detection)
• Cloud Security Expertise, particularly within Microsoft 365 and Azure environments
• Infrastructure Knowledge: networking, Windows, macOS etc.
• Familiarity with security frameworks & standards i.e. NIST, CIS Benchmarks, NCSC guidelines, ISO 27001 and Cyber Essentials Plus (CE+)
• Practical experience with PowerShell, Python, and Kusto Query Language (KQL) for automation, analysis, and custom alerting
• Exposure to programming languages such as JavaScript, C, or .NET is a big plus!

We’ve been dubbed ‘the rebels of accountancy’. We’re straight-talking. Never afraid to share our opinions. We put people and relationships before products and services, and deliver a streamlined, client-focused service – free from unnecessary red tape.

Check out our recent achievements:

• Best Companies’No.1 Accountancy Firm & No.30 Best Large Companyto Work For in the UK
• BecameB CorpCertifiedin 2023 and we’re still the UK’s largest accountancy B Corp, measuring and improving our impact beyond business for a brighter tomorrow
• Achieved 5 awards at theInspiring Workplace Awardsin 2025: winner in the Large Business category and best in class for inspiring People & Culture, Wellbeing, Inclusion and Employee Experience

What's in it for you?

Our people are the beating heart of our culture. We know that if you love working here, and you’re given the trust and autonomy to work in a way that best suits you, you’ll produce amazing results.

That’s why we offer things like:

• A flexible approach to work - balancing working from home, in office or with clients
• A generous holiday entitlement
• An enhanced parental leave policy
• No dress code – just “wear something!”
• A multi-award-winning wellbeing offering to support your physical, mental, spiritual, and financial health
• Volunteering opportunities to work closer with local communities and charities
• Cooper Parry social/sports clubs

Feeling supported and welcomed is such a big part of bringing your whole self to work. As an equal opportunities employer, we’ll work with you to ensure you have everything you need to develop your skills and achieve your best.

Get in touch if you have any questions about our commitment to Diversity & Inclusion or about accessibility/accommodations during your application process.

For the attention of agencies - unsolicited CVs will not be honoured. We will only accept CV submissions for roles briefed to you by our Talent Acquisition team.

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