Financial services consulting and venture builder focused on tech transformation
DefineX is a consulting and venture-building firm serving financial institutions through technology and digital transformation. The tech stack reveals dual operating modes: deep mainframe and legacy system expertise (Siebel, PL/SQL, Hadoop) paired with modern AI/ML capabilities (Hugging Face, LangChain, LlamaIndex, Python). Active projects span mainframe-to-microservices rewrites, LLM prototyping, and ML-enabled data pipelines—indicating they're helping clients bridge legacy banking infrastructure to AI-native architectures. The senior-weighted engineering and product hiring mix reflects advisory and build-partner work rather than pure consulting.
DefineX operates as a consulting house and venture builder specializing in technology transformation for financial institutions across the Middle East and Turkey. The firm combines banking domain expertise with engineering and product capability, covering strategy, architecture, design, and execution phases of major digital initiatives. Core practice areas include mainframe modernization, CRM implementation, data warehouse scaling, and emerging AI/ML applications in banking. The company is headquartered in Istanbul with active hiring in Turkey and Saudi Arabia, operating at 201–500 headcount with a senior-skewed team.
Legacy/integration stack: Siebel, PL/SQL, XML, SAP CRM, Informatica, Hadoop. Modern: Java, Spring Boot, React, Angular, Docker, Kubernetes. AI/ML: Python, Hugging Face, transformers, LangChain, LlamaIndex, R.
Headquartered in Istanbul, Turkey. Currently hiring in Turkey and Saudi Arabia across engineering, product, consulting, and data functions.
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