DIMITRIOS MASTROGIANNIS

Provided end-to-end pre-employment screening and offboarding-adjacent compliance support, maintaining GDPR-compliant HRIS records for audit readiness. Served as primary HR point of contact for candidates and hiring managers, resolving escalations and improving turnaround times through process improvements.

Managed end-to-end pre-employment screening and offboarding-adjacent compliance processes, maintaining rigorous data accuracy and GDPR-compliant record keeping. Served as the primary HR point of contact for candidates and stakeholders, resolving queries and reducing turnaround times by identifying process bottlenecks.

Owned the full onboarding and offboarding lifecycle, including documentation, orientation, system setup, Right to Work checks, background screening, and exit compliance. Maintained and audited HRIS records for GDPR-compliant accuracy, prepared HR reports for stakeholders, and improved onboarding efficiency through Health & Safety onboarding enhancements.

Managed high-volume HR administration, including candidate documentation, HRIS data entry, scheduling, and new-starter query handling with accuracy and discretion. Ensured employee records met audit-ready standards in compliance with GDPR and internal data governance requirements.

Managed overnight operations independently, completing financial reconciliations and handling escalations calmly and accurately under pressure. Ensured effective decision-making and issue resolution during off-peak operations.

Delivered end-to-end HR operations for a workforce of approximately 900 employees, covering onboarding, offboarding, contracts, benefits administration, and day-to-day lifecycle management under Greek employment law. Acted as the primary HR contact for colleagues and managers, handling escalations, and partnered with leadership on HR procedures, KPIs, benefits programmes, and engagement initiative

Designed and delivered structured training programmes and induction experiences, maintaining training records and supporting colleague development across departments. Collaborated with departmental heads to identify capability gaps and build targeted learning and development initiatives aligned to business needs.

Completed a Postgraduate Diploma in International Human Resource Management (CIPD-accredited) at the University of Essex from 2021 to 2023.

Completed a Master’s Degree in Tourism Management at ALBA Graduate Business School from 2015 to 2017.

Completed a Bachelor’s Degree in Sociology at Panteion University of Social and Political Sciences from 2010 to 2014.

Completed a Certificate of Higher Education in Communication at Deree – The American College of Greece from 2011 to 2013.