Security Engineer - Microsoft Sentinel & Defender XDR (Various levels)

Reference: rxti4pkpzadzbqqdozs9

We are seeking Security Engineers at various levels to design, implement, and improve cloud-based security monitoring and incident response capabilities using Microsoft Sentinel and Microsoft Defender XDR. You will help protect critical systems, applications, identities, and data by developing effective detection, investigation, and response solutions across the Microsoft security ecosystem. The role offers opportunities to work on both operational security and strategic improvement initiatives in a collaborative, technically focused environment.

Responsibilities may include onboarding and normalising data sources in Microsoft Sentinel; developing and tuning analytics rules, automation rules, workbooks, dashboards, and playbooks; investigating alerts and incidents across Microsoft Defender XDR; and supporting threat hunting, vulnerability remediation, and security investigations. You will contribute to incident response processes, identify opportunities to reduce false positives, document technical procedures, and provide clear recommendations to technical and non-technical stakeholders. Depending on experience, you may also lead security engineering projects, mentor colleagues, establish monitoring standards, and help shape the wider security operations roadmap.

We are looking for candidates with practical experience in security engineering, security operations, threat detection, or incident response, together with an understanding of Microsoft Sentinel, Defender for Endpoint, Defender for Identity, Defender for Office 365, and Defender for Cloud Apps. Familiarity with Kusto Query Language (KQL), Microsoft Entra ID, cloud platforms, logging architectures, and security automation is highly desirable. Experience with scripting, particularly PowerShell, and knowledge of frameworks such as MITRE ATT&CK will be advantageous. Strong analytical, communication, and problem-solving skills are essential. Applications are welcomed from early-career professionals with relevant technical foundations as well as experienced engineers able to provide technical leadership. Relevant Microsoft, cloud, or cyber security certifications are beneficial but not essential.

COMPETITIVE SALARY
Added 01/09/2026
Reference: rxti4pkpzadzbqqdozs9

Security Engineer - Microsoft Sentinel & Defender XDR (Various levels)

London, England, United Kingdom Permanent Security Engineer

Other similar jobs

M365 Security Consultant ( M365 security, Defender, Sentinel and Microsoft security stack.)

Added 19/08/2026

We are seeking a skilled M365 Security Consultant with a strong focus on M365 security, Microsoft Defender, Sentinel, and the broader Microsoft security stack. In this critical role, you will be responsible for designing, implementing, and managing security solutions that protect our clients’ environments. You will work closely with cross-functional teams to assess security requirements, identify vulnerabilities, and recommend appropriate security measures. Your expertise will help in developing security policies, procedures, and best practices tailored to Microsoft 365 environments. The ideal candidate will have hands-on experience with Microsoft security technologies, particularly Defender for Endpoint, Microsoft Sentinel, and Azure Active Directory....

Learn more

Microsoft Defender Security Engineer

Added 31/07/2026

We are seeking a skilled Microsoft Defender Security Engineer to join our dynamic team. In this role, you will be responsible for implementing, managing, and maintaining security solutions utilizing Microsoft Defender. Your primary duty will involve configuring and optimizing security settings to protect our infrastructure from potential threats. You will conduct security assessments, analyze vulnerabilities, and develop effective remediation strategies to enhance our overall security posture. Collaboration is key in this position, as you will work closely with IT teams to ensure seamless integration of security measures across various platforms. You will also be tasked with monitoring security alerts, responding...

Learn more

Microsoft Defender Security Engineer

Added 31/07/2026

We are seeking an experienced Microsoft Defender Security Engineer to enhance our security operations and protect our digital assets. In this role, you will be responsible for designing, implementing, and managing security solutions leveraging Microsoft Defender technologies. You will monitor security alerts, conduct threat assessments, and respond to security incidents, ensuring that our systems remain secure and compliant with industry standards. Collaboration with cross-functional teams will be essential as you provide guidance on security best practices and implement effective strategies for risk mitigation. The ideal candidate will possess a deep understanding of Microsoft Defender, including endpoint security, threat protection, and...

Learn more

Security Engineering & Cloud / Application Security (All Levels) - UK Wide

Added 04/09/2026

We are seeking Security Engineering and Cloud/Application Security professionals at all levels to join a growing team working on complex, business-critical technology environments across the UK. Whether you are an experienced security engineer, a cloud security specialist, an application security practitioner, or building your career in cyber security, you will have the opportunity to contribute to meaningful projects and develop your technical expertise. You will help design, implement and improve security controls across cloud platforms, applications, infrastructure and development pipelines. Responsibilities may include conducting threat modelling and security reviews; identifying and managing vulnerabilities; supporting secure architecture and design decisions; integrating...

Learn more

Operational Technology Cyber Security Consultant (All Levels)

Added 02/09/2026

We are seeking Operational Technology Cyber Security Consultants at all levels to support the assessment, design and improvement of cyber security across industrial control systems, operational technology (OT) environments and critical infrastructure. You will work with clients and internal stakeholders to understand their operational needs, identify cyber risks and develop practical, risk-based solutions that protect safety, availability and business continuity. The role offers opportunities for professionals ranging from early-career consultants to experienced specialists and technical leads. Responsibilities may include conducting OT cyber security assessments, maturity reviews and gap analyses; developing and implementing security strategies, policies, standards and roadmaps; supporting network...

Learn more

Operational Technology Cyber Security Consultant (All Levels)

Added 01/09/2026

We are seeking Operational Technology Cyber Security Consultants at all levels to support the protection and resilience of industrial control systems, operational technology (OT) environments and critical infrastructure. Working with clients across complex and highly regulated sectors, you will help assess cyber risk, strengthen security capabilities and deliver practical solutions that protect safe, reliable operations. This is an opportunity for professionals ranging from developing consultants to experienced specialists who want to work on varied, technically challenging assignments. Responsibilities may include conducting OT and industrial control system security assessments, identifying vulnerabilities and evaluating risks across networks, devices, applications and supporting processes....

Learn more

Operational Technology Cyber Security Consultant (All Levels)

Added 10/08/2026

We are seeking an experienced Operational Technology Cyber Security Consultant at all levels to join our dynamic team. In this role, you will be responsible for assessing and enhancing the security posture of operational technology environments. You will conduct risk assessments, vulnerability assessments, and security audits to identify potential threats and implement robust security measures. Collaborating with cross-functional teams, you will work to develop and implement security policies, standards, and best practices tailored for industrial control systems and critical infrastructure. Your expertise will be essential in providing guidance on compliance with industry regulations and standards. The ideal candidate will possess...

Learn more

Microsoft 365 & Security Infrastructure Administrator

Added 18/09/2026

We are seeking a Microsoft 365 & Security Infrastructure Administrator to manage, secure and continuously improve a modern cloud and hybrid technology environment. This role will be responsible for the administration of Microsoft 365 services, identity platforms, endpoint technologies and core security controls, ensuring systems are reliable, compliant and aligned with business needs. You will work closely with internal stakeholders, technology teams and external partners to deliver effective solutions and provide a high standard of technical support. Key responsibilities include administering Microsoft Entra ID, Microsoft 365, Exchange Online, SharePoint, Teams and OneDrive; managing user accounts, groups, permissions, licensing and conditional...

Learn more

Microsoft 365 & Security Infrastructure Administrator

Added 04/09/2026

We are seeking a Microsoft 365 & Security Infrastructure Administrator to manage, maintain and continuously improve a secure, reliable and modern cloud-based technology environment. This role will be responsible for the administration of Microsoft 365 services, identity and access platforms, endpoint technologies and core security controls. You will work closely with internal stakeholders and technical teams to ensure systems are resilient, compliant and aligned with business needs. Key responsibilities will include administering Microsoft Entra ID, Microsoft 365, Exchange Online, SharePoint, Teams, Intune and related cloud services; managing user accounts, groups, licences, permissions and conditional access policies; and supporting device compliance,...

Learn more

Microsoft Security Operations Centre (SOC) Analyst – T2 & T3

Added 18/08/2026

We are seeking a skilled Microsoft Security Operations Centre (SOC) Analyst at T2 & T3 levels to join our dynamic team. In this role, you will be responsible for monitoring and responding to security incidents, ensuring the integrity and confidentiality of our systems and data. You will analyze security alerts, investigate potential incidents, and provide timely and effective incident response. Your expertise will be crucial in identifying vulnerabilities and recommending remediation strategies to enhance our security posture. The ideal candidate will possess a strong understanding of security operations, incident response, and threat intelligence. You will work closely with cross-functional teams...

Learn more

Microsoft IAM Consultant / Associate Manager(Entra ID)

Added 03/08/2026

We are seeking an experienced IAM Consultant / Associate Manager specializing in Microsoft Entra ID to join our team of talented professionals. In this role, you will be responsible for designing, implementing, and supporting Identity and Access Management (IAM) solutions based on Microsoft Entra ID (formerly Azure Active Directory). You will collaborate with stakeholders to assess business requirements, translate them into technical solutions, and ensure secure and seamless access management across cloud and on-premises environments. Your key responsibilities will include leading IAM projects, conducting security assessments, developing and maintaining access policies, managing user lifecycle processes, and integrating Entra ID with...

Learn more

Senior Security Operations Engineer ( SOC Engineer L3)

Added 14/08/2026

We are seeking a seasoned Senior Security Operations Engineer to join our dynamic team, focusing on enhancing the security posture of our organization. In this pivotal role, you will be responsible for monitoring security incidents, conducting thorough investigations, and responding to threats in a timely manner. Your expertise will guide the development and implementation of robust security protocols and procedures. You'll collaborate closely with cross-functional teams to identify vulnerabilities and recommend remediation strategies, ensuring the integrity and confidentiality of sensitive data. As a key member of the Security Operations Center (SOC), you will lead incident response efforts, analyze security alerts,...

Learn more

Security Operations Engineer (SOC Engineer L2)

Added 14/08/2026

We are seeking a talented and motivated Security Operations Engineer (SOC Engineer L2) to join our dynamic team. In this role, you will be responsible for monitoring, detecting, and responding to security incidents within our organization’s IT environment. You will utilize advanced security technologies and tools to analyze potential threats, investigate security breaches, and ensure that appropriate measures are in place to mitigate risks. Your expertise will contribute to the development and enhancement of security protocols and incident response plans, ensuring the protection of sensitive data and systems. Key responsibilities include conducting thorough analysis of security alerts, performing incident investigations,...

Learn more

Senior Site Reliability Engineer / SecOps Engineer

Added 01/09/2026

We are seeking a Senior Site Reliability Engineer / SecOps Engineer to strengthen the reliability, security, and operational resilience of critical digital services. This role combines site reliability engineering, cloud infrastructure, automation, and security operations, with responsibility for ensuring systems remain available, scalable, observable, and protected. You will work closely with engineering, product, and infrastructure teams to identify operational risks, improve platform performance, and embed secure practices throughout the software development lifecycle. Key responsibilities include designing and maintaining resilient cloud infrastructure; developing infrastructure as code and automated deployment pipelines; monitoring system health, performance, and availability; and leading incident response, root-cause...

Learn more

Identity & Access Management Engineer (IAM Engineer)

Added 13/08/2026

We are seeking a skilled Identity & Access Management Engineer (IAM Engineer) to join our dynamic team. In this role, you will be responsible for designing, implementing, and maintaining identity and access management solutions to ensure secure access to our systems and data. You will collaborate closely with cross-functional teams to develop policies, procedures, and standards for identity governance and administration. Your expertise will play a crucial role in risk management and compliance, helping to protect sensitive information and streamline user access processes. The ideal candidate will possess a strong background in IAM technologies and frameworks, including Single Sign-On (SSO),...

Learn more
At least 8 characters, 1 uppercase, 1 lowercase and 1 special character or number
Your file must be a doc, docx or pdf. No larger than 5MB.