12 of 12 Contract SIEM Jobs in the Thames Valley

Contract SIEM Engineer Exciting contract opportunity to join a high-performing cybersecurity team Hybrid working model, three days onsite and two remote Contribute to cutting-edge SIEM and EDR deployments for a large-scale organisation Up to £410 per day (Inside IR35) Active SC clearance required ABOUT THE CLIENT: Our client is a well-established technology-driven organisation with a … advancing its cybersecurity capabilities. You will join a dedicated security team working to enhance threat detection and response across complex environments. This is a crucial role for an experienced SIEM Engineer to make a measurable impact by improving resilience and operational security. THE BENEFITS: Up to £410 per day (Inside IR35) Hybrid working arrangement Collaborative and innovative security culture Opportunity … to work with leading SIEM and EDR technologies THE SIEM ENGINEER ROLE: As a SIEM Engineer, you will design, deploy, and maintain SIEM and EDR solutions that strengthen the organisation's security posture. You will work closely with IT and security teams to manage log ingestion, implement integrations, and monitor system activity for potential threats. SIEM ENGINEER ESSENTIAL SKILLS: Proven More ❯

Conduct regular security audits and assessments to identify and remediate risks. Apply industry frameworks such as NIST Cybersecurity Framework, ISO 27001, CIS Controls . Oversee and enhance security technologies: SIEM, vulnerability management, cloud security (OCI/Azure/AWS), PKI, cryptography, web/email security, logging and monitoring . Monitor network traffic for anomalies and potential breaches. Collaborate with IT More ❯

engineering lifecycle from design to deployment Desirable Skills Experience with cloud platforms (AWS, Azure) and Infrastructure as Code (CloudFormation, Terraform) Integration of enterprise services such as Active Directory, PKI, SIEM, and monitoring tools Hands-on with DevSecOps tools and CI/CD pipelines Relevant industry certifications (VMware VCP, AWS Solutions Architect, Microsoft, Kubernetes, etc.) Experience presenting at technical boards or More ❯

would be the main focus of the role. Strong expertise with Microsoft Defender and Sentinel is needed. Key Skills & Experience from the Security Analyst: Strong experience with Microsoft Sentinel (SIEM) and Microsoft Defender suite (Defender for Endpoint, Identity, Cloud, etc.). Proven track record in security monitoring, incident response, and alert troubleshooting . Working knowledge of SOAR platforms (preferably within More ❯

would be the main focus of the role. Strong expertise with Microsoft Defender and Sentinel is needed. Key Skills & Experience from the Security Analyst: Strong experience with Microsoft Sentinel (SIEM) and Microsoft Defender suite (Defender for Endpoint, Identity, Cloud, etc.). Proven track record in security monitoring, incident response, and alert troubleshooting . Working knowledge of SOAR platforms (preferably within More ❯

and securing platforms such as Entra ID (Azure AD), Microsoft 365 E5, Azure IaaS/PaaS, Windows/Linux/Unix. o Strong knowledge of security tooling such as SIEM, endpoint detection (EDR/XDR), and vulnerability management platforms. o Hands-on experience with policy development, access control models (RBAC, ABAC), and logging standards. o Experience supporting assurance activities or … security vetting to SC level. Desirable o Experience working in a regulated or government environment, particularly within research, energy, or national infrastructure. o Knowledge of Incident Management, Vulnerability Assessments, SIEM & SOC Systems. o Knowledge of OT/ICS/SCADA security principles and industrial control environments. o Experience designing or reviewing secure software supply chain and CI/CD security. More ❯

SIEM Engineer Contract - Inside IR35 Duration: March 2026 Reading (Hybrid) Are you a seasoned SIEM (Security Information and Event Monitoring) professional looking to take your career to new heights? If so, this could be the perfect opportunity for you! The company is seeking a talented SIEM Engineer to join their dynamic team and play a pivotal role in maintaining and … enhancing their security monitoring platform. As the SIEM Engineer, you will be responsible for ensuring the optimal performance, scalability, and integration of the company's SIEM platform. This includes onboarding log sources, developing analytical rules, creating automation for triage and remediation, and integrating with other IT and Operational Technology platforms. You will collaborate with the wider Threat Detection and Response … team to ensure the SIEM platform meets their day-to-day needs and provide support during incidents as necessary. Key Responsibilities of the SIEM Engineer Develop and maintain the security monitoring platform, ensuring it meets the company's evolving security requirements. Participate in infrastructure projects to plan and implement solutions for security monitoring. Design, implement, and maintain detection rulesets to More ❯

Job Title: SIEM Engineer (Security Cleared) Location: United Kingdom (Must hold active Security Clearance) Job Type: Contract/Permanent Overview: We are seeking an experienced Security Information & Event Monitoring (SIEM) Engineer with active Security Clearance to join our cybersecurity team. The ideal candidate will be responsible for maintaining, developing, and optimizing the SIEM platform — ensuring effective log management, threat detection … and automation across complex IT and OT environments. Key Responsibilities: Manage, maintain, and enhance the SIEM platform ensuring optimal performance and scalability. Onboard and integrate new log sources, create custom parsers, and develop analytic rules. Design and maintain detection rulesets, scope, plan, and track log integrations. Develop automation for alert triage and incident remediation through SOAR tools. Collaborate with Threat … Detection & Response teams to ensure the SIEM platform aligns with security monitoring requirements. Participate in infrastructure projects and security tool integrations. Lead and mentor junior SIEM engineers, fostering a culture of continuous improvement. Key Skills & Experience: Active UK Security Clearance – Essential . Proven hands-on experience as a SIEM Engineer . Strong understanding of security log management across multiple domains More ❯

Role: Security Information & Event Monitoring (SIEM) Engineer – **Security Cleared** Location: Reading/Havant – UK Mode: Hybrid (2 days office) Language: English Mandatory - **Clearance: Must be Security Cleared (Active SC)** Job Summary: Looking for an experienced SIEM Engineer to maintain and enhance the Security Monitoring platform. Responsible for log onboarding, custom parsers, rule creation, automation for triage and remediation, and integration … with other security tools. Key Responsibilities: Develop and manage the SIEM platform ensuring scalability and performance. Plan and implement solutions for security monitoring. Design and maintain detection rules. Lead and mentor SIEM team. Work closely with Threat Detection & Response team to support incident handling. Required Skills: Proven hands-on experience in SIEM engineering. Strong understanding of security logs across domains More ❯

of greenfield Identity and Access Management and Privileged Access Management solutions. You'll provide hands-on technical leadership, ensure secure-by-design implementation, and contribute to the development of SIEM/SOC capabilities. Key Responsibilities Lead end-to-end IAM/PAM design and delivery. Integrate IAM/PAM telemetry into SIEM tooling. Provide technical oversight for MSPs and vendors. … OpenID Connect . Familiarity with ISO 27001, NIST CSF, CAF & GDPR . Experience leading or overseeing MSPs. Current SC clearance . Desirable: Knowledge of Microsoft Sentinel, Splunk, or Elastic SIEM . Experience in SOC build or cyber transformation projects. Degree/HND in a relevant STEM field. More ❯

Candidate MUST BE SECURITY CLEARED As a Security Information & Event Monitoring (SIEM) Engineer, you are responsible for maintaining the SIEM platform. This includes onboarding log sources, creating custom parsers, developing analytic rules, creating automation for triage and remediation, and integrating with other Information Technology and Operational Technology SSE platforms at pace. You will: Develop the security monitoring platform, ensuring optimal … in infrastructure projects to develop, plan, and implement solutions for security monitoring. Design, implement, and maintain detection rulesets. Scope, plan, and track log integrations. Guide, develop, and grow the SIEM Engineering team. Collaborate with the wider Threat Detection & Response team to ensure the SIEM platform meets their day-to-day needs and support incidents as necessary. You have Proven hands … on SIEM Engineering background. Extensive experience working with security logs across multiple domains identity and access, network, system, data, application, cloud and multiple product types. Proficiency in data analysis and scripting languages (e.g., PowerShell, Python). Strong Security Orchestration, Automation and Response (SOAR) knowledge. Team leadership experience with great collaboration and stakeholder management skills More ❯

Candidate MUST BE SECURITY CLEARED As a Security Information & Event Monitoring (SIEM) Engineer, you are responsible for maintaining the SIEM platform. This includes onboarding log sources, creating custom parsers, developing analytic rules, creating automation for triage and remediation, and integrating with other Information Technology and Operational Technology SSE platforms at pace click apply for full job details More ❯