Declan Callahan
Information Security Operations Specialist @Quilter
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WORK HISTORY
Information Security Operations Specialist @Quilter
Southampton, GB
EDUCATION
Poole High School Sixth Form
A-Levels: Computing, IT, Physical Education & Media Studies, .
Bournemouth and Poole College
EDI Level 3 Diploma in IT User Skills, Information Technology
Bournemouth University
BSc (Hons) Cyber Security Management, Cyber / Information Security
SKILLS
ABOUT DECLAN CALLAHAN
Information Security Operations Specialist with a strong background in safeguarding critical information assets across the financial sector. I bring hands‑on experience in security operations, best‑practice frameworks, governance, and risk management, supported by prior security clearance and continuous professional development.Over my career, I’ve built a solid capability in threat detection, incident response, and post‑incident recovery, ensuring that systems and data remain available, accurate, and secure. My day‑to‑day responsibilities include monitoring security platforms, identifying emerging risks, and implementing effective mitigation strategies. I’m proficient with a wide range of advanced security tools used to detect intrusions, analyse events, and manage security incidents efficiently. I’m known for strong analytical thinking and problem‑solving skills, working closely with technical and business teams to design and maintain robust security controls. I keep pace with the rapidly evolving security landscape through continuous learning, professional certifications, and practical experience—ensuring the measures I implement are both relevant and resilient against modern threats. Certifications: BSc, CSM, SSCP, CCSP, CSIR, FOR508, QACLOUDHA, EHE, NDE, ITILv4For more detail, please refer to my Experience, Education, and Licences & Certifications sections.
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