Please find below a non definitive list of certifications by Vendor
ISC2
EC Council
Certified Ethical Hacker (CEH)
Certified Chief Information Security Officer (C¦CISO)
Certified EC-Council Instructor
VMware
VMware Certified Professional – Datacenter Virtualization (Recertified 2015)
vITA VCP Instructor (VMware IT Academy VCP Instructor)
Microsoft
Microsoft Certified Trainer
MCP (Managing and Maintaining a Microsoft Windows Server 2003 Environment)
MCP (Installing, Configuring and Administering Microsoft Windows XP Professional)
MCSA (Microsoft Windows Server 2003)
Windows Server 2008 – Security Specialist
PRO: Windows Server 2008
Windows Server 2008 Active Directory Configuration Specialist
Technology Specialist : Server 2008 Network Infrastructure Configuration
MCTS: Microsoft Certified Technology Specialist
MCITP Windows Server 2008 Administrator
TS: Windows Server 2008 R2 Server Virtualization
PRO: Windows Server 2008 R2, Virtualization Administrator
CompTIA
CASP (Advanced Security Practitioner)
Security +
CompTIA Secure Infrastructure Specialist – CSIS
A+ Service Technician N+ Network
Linux+
Linux Network Professional – CLNP
Systems Support Specialist – CSSS
IT Operations Specialist – CIOS
Project + (Project Management)
Cloud Essentials
CISCO
CCNA
Mile2 Security Certifications
(C)ISSO – Certified Information Systems Security Officer
Linux Professional Institute
LPIC-1: Linux Server Professional Certification
ISO 27001
ISO 27001 Lead Implementer – PECB
Lead Pentest Professional
ISO 27001 Lead Implementer
PECB Certified Trainer
Other IT Qualifications
Diploma in Teaching
Diploma in Health and Safety
Advanced Diploma in Multimedia Software Engineering
Several City and Guilds certifications covering programming in C, C1, C2, C++, VB, SQL etc.
Bachelor of Arts in Information Systems Management from the Institute of Public Administration
MSc Software Engineering and Database Technologies from NUIG Galway