
From diagram to working database
I designed an online bookstore schema with 7 related tables, a many-to-many bridge and composite keys. Then I built a full movie-rental database in Oracle with constraints, sequences, indexes, views and synonyms.
The courses that shaped my skill set. Every card links to the original files on GitHub.

I designed an online bookstore schema with 7 related tables, a many-to-many bridge and composite keys. Then I built a full movie-rental database in Oracle with constraints, sequences, indexes, views and synonyms.

Built and troubleshot networks in Cisco Packet Tracer: VLANs, inter-VLAN routing, EtherChannel, DHCP and HSRP.

Hands-on labs on live machines: Nmap and OpenVAS scanning, privilege escalation, encryption, PKI and firewalls.

As product owner for the Electric Power Research Institute, I helped map OT threats to the right tools: SIEM, EDR, firewalls and more.
A task analysis and interface proposal for an app that lets travellers reserve overhead-bin space to cut boarding delays.
Command-line programs using functions, classes, file handling and CSV, including a task-list manager.

Agile case studies, a project simulation, and a full business case with TCO/ROI analysis and an MS Project plan.