Christian Mandu
MEATH,Dunboyne
Summary
Experienced IT Support professional with a background in Computing, Cybersecurity, and Statistics, passionate about helping users resolve technical issues and maintain smooth IT operations. Skilled in troubleshooting hardware, software, Microsoft 365, user account management, and basic networking issues, with a strong focus on delivering excellent customer support. A quick learner with strong problem-solving and communication skills.
Overview
7
7
years of professional experience
1
1
Certification
Work History
Help Desk Support
Red Operation
Dublin
11.2023 - 02.2026
- Improved ticket resolution efficiency by 30% through effective troubleshooting and timely issue management during Q1 2024.
- Maintained a 98% customer satisfaction rate by delivering responsive and user-focused technical support.
- Supported the onboarding and training of new team members on help desk procedures, troubleshooting processes, and support protocols.
Junior Statistician
New-Dawn Credit Union
Calabar
09.2018 - 08.2022
- Collected, cleaned, and analyzed data trends to support research and business decision-making.
- Conducted data validation and quality checks, improving data accuracy and reducing reporting errors by up to 20%.
- Used statistical and spreadsheet tools to organize and interpret large
- Improved data accuracy by implementing rigorous data validation techniques in statistical analysis.
Education
Master of Science - Applied Cyber Security
Technological University, Dublin
Dublin12.2025
Higher Diploma - Computer Science
Griffith College
Dublin10-2023
Skills
- Customer Service
- Technical Support
- Active Directory
- Hardware & Software Troubleshooting
- Network Management
- System Administration
- Software Installation & Configuration
- Remote Support
- Microsoft 365 Administration
- Operating Systems (Windows 10/11, macOS basics)
- Endpoint & Device Support
- Identity & Access Management (IAM) fundamentals
Certification
- CompTIA S+ - CompTIA
- CompTIA CySA+ - CompTIA
Timeline
Help Desk Support
Red Operation
11.2023 - 02.2026
Junior Statistician
New-Dawn Credit Union
09.2018 - 08.2022
Master of Science - Applied Cyber Security
Technological University, Dublin
Higher Diploma - Computer Science
Griffith College