At RayCon Construction Ltd, I was instrumental in securing our IT infrastructure, focusing on both proactive and reactive cybersecurity measures. I leveraged Microsoft Sentinel and Windows Event Manager to handle incident response, ensuring swift identification and resolution of potential threats. I also fine-tuned security rules to reduce false positives, enhancing the accuracy of our threat detection systems. My responsibilities included troubleshooting hardware and software issues, configuring firewalls, and managing network security protocols, all aimed at protecting against unauthorized access and maintaining the integrity of our systems.