Senior IT Security Analyst

September Consulting Ltd; Cork; On-site; EUR 60,000 - 80,000; Full time

Job summary

A leading global financial services organization in Cork is seeking a Senior IT Security Analyst. This role involves managing cloud security, supporting security architects, and investigating incidents. Candidates should have strong skills in Microsoft and Linux engineering, scripting, and DevOps tools. This position offers a dynamic work environment focused on innovation and professional growth.

Qualifications

• 3+ years’ experience in enterprise-scale cloud security environments.
• 5+ years’ experience with both Linux and Windows environments.
• Solid understanding of operating system security and hardening practices.

Responsibilities

• Install, configure, and troubleshoot Active Directory and DNS.
• Support Security Architects in secure cloud solution design.
• Investigate and resolve security incidents.

Skills

Microsoft and Linux engineering

Scripting and automation (Bash, Python, PowerShell)

Operating system security and hardening

DevOps tools and methodologies (Docker, Ansible, Terraform)

Problem-solving and critical-thinking

Communication skills

Education

Relevant certifications (RHCSA, AWS Solutions Architect, Azure Security, or MCSE)

Job description

Overview

Senior IT Security Analyst – Cork, Ireland

Location: Cork, Co. Cork, Ireland

Employment Type: Full-time

About the Role:

We’re seeking a Senior IT Security Analyst with a strong background in Microsoft and Linux engineering to join a leading global financial services organization. This is an exciting opportunity to play a key role within the IT Security department, helping design, build, and maintain a secure, enterprise-class hybrid-cloud infrastructure. You’ll also contribute to the organization’s Cyber Security Incident Response Team (CSIRT) and support investigations when required.

Key Responsibilities

• Install, configure, and troubleshoot Active Directory and DNS, including managing Group Policy and Active Directory Security solutions.
• Implement and maintain Active Directory design, schema, OU structures, replication topologies, and DC backup/restore processes.
• Support Security Architects in the design, deployment, and maintenance of secure cloud solutions aligned with best practices.
• Build and configure cloud-based infrastructure with a focus on identity and access management and secure configuration.
• Develop and apply security controls across multiple cloud providers.
• Automate and script security processes to accelerate configuration audits, risk assessments, and remediation activities.
• Keep cloud infrastructure up to date and proactively recommend improvements to enhance security posture.
• Investigate and resolve security incidents, document findings, and implement preventive measures.
• Collaborate across internal teams to strengthen cyber resilience and security awareness.
• Maintain documentation and diagrams for systems, tools, and operational processes.
• Follow enterprise change management procedures and ticketing processes.
• Perform other related duties as required.

About You

• 3+ years’ experience in enterprise-scale cloud security environments.
• 5+ years’ experience with both Linux and Windows environments.
• Solid understanding of operating system security and hardening practices.
• Proficiency in scripting and automation (Bash, Python, PowerShell) and familiarity with Infrastructure as Code (IaC).
• Strong communication skills—both written (documentation, procedures) and verbal (team collaboration).
• Excellent problem-solving and critical-thinking abilities.
• Comfortable managing multiple complex projects in a fast-paced environment.
• Familiarity with DevOps tools and methodologies (Docker, Ansible, Terraform).
• Relevant certifications such as RHCSA, AWS Solutions Architect, Azure Security, or MCSE are highly desirable.

Why Apply?

You’ll join a collaborative, forward-thinking technology team that values innovation, security excellence, and professional growth. This role offers the chance to work on enterprise-scale projects within a secure hybrid-cloud environment—while contributing directly to the organization’s global security initiatives.