Large Turkish conglomerate with security operations maturity across construction, energy, and infrastructure
Kalyon Holding is a 10,000+ person Turkish conglomerate spanning construction, energy, real estate, and infrastructure—anchored by flagship projects like Istanbul Airport and major offshore platforms. Their security stack reveals operational maturity: Palo Alto Networks, Splunk, QRadar, and Cortex XSOAR form the core, with active SOAR playbook development and detection logic refinement underway. Current hiring is security-heavy (5 open roles) with focus on senior and lead positions, signaling investment in security operations center maturity rather than expansion.
Kalyon Holding operates as a privately held conglomerate founded in 1974, with headquarters in Istanbul. The company spans construction (major infrastructure including airports and pipelines), energy (offshore drilling, solar manufacturing), real estate, and industrial sectors across Turkey and internationally. With nearly 35,000 employees and over 81 years of collective operational experience, the holding manages complex, long-cycle projects alongside educational institutions (Hasan Kalyoncu University, Erdem College) and cultural initiatives. The company's current hiring footprint includes roles in the United Kingdom and Turkey, concentrated in security operations and finance functions.
Kalyon's security stack includes Palo Alto Networks, Splunk, QRadar, Cortex XSOAR (SOAR), Imperva, FortiWeb, and F5 BIG-IP, supported by EDR/XDR, IAM, and proxy infrastructure for detection and response.
Current projects center on security operations: SOAR playbook development, detection logic optimization, alert tuning, and runbook refinement—targeting false positive reduction and MTTR improvements.
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