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As a Senior Cyber Security Analyst, you will play a critical role in strengthening digital defences by maintaining and optimising security operations tools and processes. You'll focus on monitoring, analysing, and responding to cyber threats, while supporting the SOC team and ensuring effective incident management across the business.

Your role will involve collaborating with technology and business stakeholders, investigating security alerts, enhancing tooling performance, and supporting the delivery of continuous improvement and risk reduction initiatives. You'll also contribute to readiness for significant incidents and play a key role in proactive threat hunting and compliance reporting.

What you'll be doing as a Senior Cyber Security Analyst:

Security Incident Response: Investigate security alerts from SIEM and third-party MSSPs, triage and respond to incidents, and support root cause analysis to drive remediation.Stakeholder Engagement: Work closely with technology and business teams to communicate cyber risks, recommend actions, and ensure proportionate implementation of controls.Tool Performance & Optimisation: Monitor and enhance the performance of SecOps tools such as Microsoft Sentinel, PAM, and EDR/XDR systems, including alert tuning and automation.SOC Support & Escalation: Act as a key contact and escalation point for the SOC team, providing guidance and mentoring to support operational effectiveness.On-Call & Incident Readiness: Participate in a 24/7/365 on-call rota with our MSSP partners, supporting out-of-hours investigations and maintaining incident readiness.Threat Hunting & Continuous Improvement: Perform proactive threat hunting, recommend new security controls, and contribute to continuous improvement of SecOps processes.Compliance & Documentation: Maintain security documentation, support GDPR, NIS, and ISO 27001 compliance, and collect metrics to report on operational effectiveness and risk posture.

Base Location: Hybrid - With travel to offices 2 days per week

Working Pattern: Full Time / 36 Hours per week

What you should bring to the role:

Essential Experience:

Minimum of 3 years in a technical cybersecurity role, ideally within a large enterprise* Experience working in or with a Security Operations Centre (SOC)* Structured approach to incident triage and issue resolution* Experience remediating cyber risks in complex digital environments* Working with third-party security partners or MSSPs

Essential Technical Skills & Qualifications:

Strong knowledge of IT infrastructure, networking, and end-user computingExperience with SIEM tools, particularly Microsoft SentinelAbility to write and tune Kusto Query Language (KQL) queriesHands-on experience with PAM, MFA, and other SecOps toolsExcellent communication skills with the ability to explain technical issues to non-technical stakeholders

Desirable Skills & Qualifications:

Microsoft Security certifications (e.g. SC-200, AZ-900)Cybersecurity certifications such as CISSP, CISM, or CCSDegree in Cyber Security, Computer Science, or related fieldFamiliarity with firewalls, IDS/IPS, VPNs, and NACExperience mentoring or leading SOC analysts

GCS is acting as an Employment Agency in relation to this vacancy.

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Senior Control Assurance Assessor - 12 Month Contract - Remote - Financial Services

What's on offer:

12-month contract with potential for extensionFully remote working modelWork with an experienced team on critical security assurance programsExposure to advanced security technologies, automation, and AI-driven testing

We are working with a major financial services organisation to find an experienced Senior Control Assurance Assessor for an initial 12-month contract. This role is fully remote, offering the chance to work on meaningful security programs within a dynamic, high-performing environment.

Role Overview:
As a Senior Control Assurance Assessor, you will play a key role in ensuring that security both on-prem and cloud designed, implemented, and operating effectively to protect business-critical assets. You'll be responsible for planning and performing security control assessments, identifying risks and control gaps, and working with stakeholders to drive improvements.

This is an exciting opportunity to work within a collaborative security assurance team on global-scale projects, using advanced automation, data-driven techniques, and working with the latest technologies.

Key Responsibilities:

Plan and execute security control assessments across on-prem and cloud environmentsDevelop test plans, test cases, and procedures based on industry frameworks and regulatory requirementsLeverage security tools and data analytics to gather and validate control evidenceIdentify, document, and report control deficiencies, providing actionable recommendationsEngage directly with key business stakeholders, communicating updates and testing resultsProvide peer review and contribute to continuous improvement of control testing processes

Skills & Experience Required:

8+ years of experience in Information Security or IT, with 3+ years in IT Audit or security control testingFamiliar with security frameworks such as NIST 800-53, ISO 27001, CIS Controls, COBITHands-on experience using RSA Archer, ServiceNow, and familiarity with automation and data-driven testingWorking knowledge of cloud environments (AWS, Azure) and related security controlsRelevant certifications: CISA, CISM, CISSP, ISO 27001 Lead Auditor (desirable)Excellent communication skills with the ability to translate technical findings into business risksExperience with Agile methodologies (Kanban, Jira) a plus

Interested?
Apply today with your CV and we'll be in touch to discuss the role in more detail and arrange next steps.

GCS is acting as an Employment Business in relation to this vacancy.

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We're hiring a dynamic professional to lead our Cyber Security Training, Awareness, and Business Engagement initiatives. This role focuses on educating employees, building a security-first culture, and strengthening collaboration across the business.

You don't need to be a cybersecurity expert-strong communication, stakeholder engagement, and training experience are key. Cyber knowledge or some exposure in creating cyber training or awareness program would be great.

Job Title: Training & Engagement Lead - Cyber Security

Location: Dublin, Ireland (Hybrid)

Type: Full-time, Permanent

Key Responsibilities:

Design and deliver engaging security training (e-learning, workshops, phishing simulations).Create annual awareness plans aligned to risk and compliance needs.Partner with HR, IT, and business units to embed security in everyday processes.Tailor content for high-risk groups (e.g., leadership, IT, HR).Report on engagement metrics and programme effectiveness.

What You'll Need:

5+ years in training, awareness, or change management (cybersecurity exposure a bonus).Excellent communication and stakeholder skills.Experience with LMS or digital learning tools.Strong organisation and analytical skills.Relevant degrees or certifications (e.g., CISA, CISM, CISSP) welcome but not required.

***No Sponsorship Available***

***Only 1G Dependent/Stamp 4/EU Citizens***

The Next Step for you: Should this position be of interest to you, please forward your CV to Pankaj Sharma at GCS Recruitment specialists at [email protected] or call on +353-46901-1902.

GCS is acting as an Employment Agency in relation to this vacancy.

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We currently have an exciting opportunity as an Alarms & Security Systems Manager working out of our Reading, This role is a great opportunity to join an ambitious Protective Security team with big plans for the future!

As the Alarms & Security Systems Manager, you will be responsible for our Alarm Monitoring Centre (AMC), which continuously monitors the security of our estate. The AMC is connected to these remote sites through multi-face communications to CCTV, IDS, Electronic access control to Radio pad systems, ADSL line, etc.

What you will be doing as an Alarms & Security Systems Manager

The successful candidate will line manage the team of Alarm Operatives and engage, collaborate, and influence key internal and external stakeholders. Analysing and identifying operational issues, agreeing and implementing improvements to reduce false positives, which in turn should improve the effectiveness of the AMC response.

Take responsibility for the AMC team, which runs 24/7, 365 days per year.Responsible for any projects related to the AMC or wider security team (e.g. the upgrade project), ensuring successful delivery.Responsible for Risk Management of the AMS with the ability to respond quickly to incidents.Deputise for senior members of the team and be part of the 'escalation rota'.Continuous Improvement of the AMC Operation and identify any operational/ process improvements.Responsible for the ID/access card requests for staff and contractors (printing, issuing and deletion) as per the TW policy.Hold key relationships with internal senior managers and external stakeholders. Specifically, collaborating with Operational Technology to agree and inform the strategic development of the IT Systems and security equipment.

The base location for this role will be Reading, on a Hybrid basis.

Hours of work are 36 hours a week, Monday to Friday.

What you should bring to the role

Experience Required:

Experience of working in a regulated environment, ideally the water industry, i.e., utilities, government department, critical national infrastructure, etc.Expert in physical security and associated Security Systems. (protective security, intelligence, security management, or risk management)Have experience in the design and application of physical & personnel security measures.A strong leader with negotiation and people influencing skills. Ability to communicate at all levels, present to an audience and build strong relationships.Understanding of security regulations, laws, and industry standards. (e.g. SEMD, PSG, WUKSS, NPSA)Security Institute Diploma (level 5) in Security Management.Valid membership of Professional Security Body with active membership and evidence of CPD, e.g. The Security Institute (Syl) or The Association of Security Consultants. (ASC)Other recognised security qualifications, e.g. ASIS Physical Security Professional. (PSP)

The successful candidate will be required to undertake a Counter Terrorism Check (CTC) before starting within this role.

GCS is acting as an Employment Agency in relation to this vacancy.

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Head of SOC Operations - URGENT

Start date: ASAP Location: London (1-2 days a week in the office) Contract length: 6 Months initially (likely to extend) Company: FTSE 100 Company

How you will contribute..
The Head of SOC Operations will play a critical role in, overseeing the 24/7/365 monitoring, detection, and response to cybersecurity threats and incidents, ensuring operational excellence, threat intelligence integration, and alignment with the organization's security objectives.

The ideal candidate is a proven cybersecurity leader with a deep understanding of security operations, threat landscapes, incident response, and team leadership. This individual will play a key role in shaping the future of our cyber defense capabilities.

Responsibilities:

Lead and manage the daily operations of the Security Operations Center, including managing a multi-tiered team of managers, analysts, and incident responders.Develop and execute SOC strategy, goals, and KPIs in alignment with organizational cybersecurity and business objectives.Oversee incident detection, triage, investigation, and coordinated response efforts to mitigate threats in real time.Ensure continuous improvement of security monitoring tools, automation, playbooks, and threat detection capabilities.Collaborate with other cybersecurity teams, IT, legal, compliance, and business units to ensure an integrated approach to incident handling and threat mitigation.Manage relationships with third-party vendors, MSSPs, and threat intelligence providers.Prepare and present metrics, risk assessments, and incident reports to executive leadership and board-level stakeholders.Lead post-incident reviews to improve processes and resilience.Maintain up-to-date knowledge of the threat landscape, emerging technologies, and compliance requirements.Develop training and professional development plans to continuously grow team capabilities.

Preferred Qualifications:

Bachelor's degree in Computer Science, Information Security, or a related field (Master's preferred).Extensive experience in cybersecurity leadership within a SOC or incident response function.Strong knowledge of security technologies, SIEM platforms (e.g., Chronicle, Splunk, QRadar), EDR tools, firewalls, and network security.Experience with security frameworks and regulations (NIST, ISO 27001, MITRE ATT&CK, CIS, etc.).Demonstrated experience leading security incident investigations and crisis response.Excellent leadership, communication, and project management skills.Relevant certifications such as CISSP, CISM, GIAC, or equivalent are highly preferred.

Preferred Skills:

Experience managing global SOC operations.Familiarity with cloud security operations (AWS, Azure, GCP).Proficiency with automation and orchestration tools (SOAR platforms).Strong analytical mindset and the ability to make high-pressure decisions.

If interested, please apply and a consultant will be in touch asap!

GCS is acting as an Employment Business in relation to this vacancy.

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Cyber Security Engineer | Dublin / Hybrid

A dynamic and growing organisation is seeking a Cyber Security Engineer to join its team. This is a fantastic opportunity to play a key role in supporting and maintaining enterprise-grade security technologies and helping to deliver threat detection and response capabilities to a wide variety of clients.

About the Role:

The successful candidate will work alongside internal teams and client stakeholders to maintain and enhance security monitoring infrastructure across SIEM, SOAR, EDR, and related platforms. You'll be involved in everything from onboarding new data sources to incident response, troubleshooting, and improving security posture through automation and data analysis.

Key Responsibilities:

Operate and maintain a distributed, multi-tenant SIEM, SOAR, and EDR environment

Onboard and maintain data sources from OS, appliances, applications, etc.

Build dashboards, queries, and visualisations to meet client needs

Troubleshoot data ingestion and infrastructure issues

Support full lifecycle management of security event sources

Coordinate with vendors and internal teams for issue resolution and project delivery

Administer enterprise security controls and services

Maintain detailed documentation for security tooling and environments

Configure and integrate log sources into SIEM, SOAR, and VA solutions

Continuously assess and improve the security monitoring environment

Stay up to date with emerging threats and security trends

Ideal Candidate Profile:

3-4 years' experience in IT or Cybersecurity

2-3 years' hands-on experience with SIEM solutions (multi-tenant environments desirable)

Strong understanding of SIEM, UEBA, and log analysis techniques

Skilled in scripting (Python, PowerShell, etc.)

Experience with endpoint security and intrusion detection tools

Familiarity with TCP/IP traffic and log analysis

Working knowledge of machine learning in cybersecurity and cloud technologies

Experience integrating and managing enterprise security tools

Bachelor's degree (or equivalent experience)

Excellent communication and customer service skills

Fluent English

Location

Based in Dublin with hybrid flexibility

GCS is acting as an Employment Business in relation to this vacancy.

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Role: Platform Security Engineer
Duration: 6-month rolling
Rate: Up to £750/day Inside IR35
Location: London, 3 days on site

Financial Services

I have an exciting opportunity for a skilled Platform Security Engineer to join one of my Hedge Fund clients on a rolling contract.

Specifically looking for someone who has:

Hands-on experience implementing security best practices into SDLC and devops workflows.Strong experience with GitlabExperience with API Security.Strong experience coding in Python

The client is looking to move quickly with availability to interview this week, to find out more, please apply now or drop an email with a copy of your CV to [email protected]

GCS is acting as an Employment Business in relation to this vacancy.

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