Kissinger Jayaseelan

Cloud Security Analyst

Talent

London, EnglandMember since August 24, 2026

Microsoft Entra IDConditional AccessIntuneDefender for EndpointCloud tenant hardening and migrationIdentity & Access Management (IAM)Privileged Identity Management (PIM)Least privilege accessEndpoint complianceSIEM detection engineeringWazuhIncident triageMITRE ATT&CK mappingNmapNessusMetasploitHydraWiresharkREMnuxVirusTotalIDA ProISO 27001NISTGDPRPythonSQLJavaScriptHTMLServiceNowJIRA

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Microsoft Entra IDConditional AccessIntuneDefender for EndpointCloud tenant hardening and migration

About

Cyber security graduate with 2+ years' hands-on experience in cloud identity, endpoint security, and incident response.

Hardened Microsoft Entra Conditional

Access, Intune, and Defender for Endpoint during a live tenant migration. First-Class BSc (Hons) in Cyber Security, with practical experience across Azure security fundamentals, IAM, vulnerability management, penetration testing, and SIEM detection engineering (Wazuh) mapped to MITRE ATT&CK. Currently studying towards Microsoft SC-200 (Security Operations Analyst).

Experience

Support Analyst, IT Security - Smart Supplier Technologies (formerly Food Alert) - Wellingborough, UK

(2023-07)

Configured 15 Microsoft Entra Conditional Access policies and set up Privileged Identity Management (PIM) for Azure groups across a 50-user tenant, reaching 100% policy compliance and enforcing just-in-time privileged access.
Deployed Intune endpoint policies and enrolled devices tenant-wide, then set up and tuned Microsoft Defender for Endpoint on a newly provisioned tenant during a full rebrand and migration to Smart Supplier Technologies.
Led Method of Procedure (MOP) validation testing with Starbucks for a new campaign launch, reducing deployment errors.
Resolved 50+ daily support requests via ServiceNow, hitting SLA targets and fixing 85% of issues on first contact.
Provided remote and in-person support, including to VIP staff, achieving a 95% satisfaction rating in internal feedback surveys.

Automation Analyst and Development Intern - NHS - Kettering, UK

(2023-08 - 2023-09)

Built RPA workflows for appointment scheduling and data entry, saving over 200 staff hours per month.
Streamlined referral and triage processes with digital forms and backend logic, cutting processing time by 35%.

Data Analyst - InfoView Consultants Ltd - Corby, UK

(2022-07 - 2023-06)

Built relational data models for BI reporting, improving data retrieval efficiency by 40%, and ran regular audits catching 98% of data quality issues early.
Tuned SQL queries and database performance, cutting response times by up to 60% on critical systems.