15h Left: Senior IT Security Analyst
5 days ago
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.
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