Location: Chennai
Other locations: Anywhere in Country
Salary: Competitive
Date: Jun 12, 2026
Requisition ID: 1716087
At EY, you’ll have the chance to build a career as unique as you are, with the global scale, support, inclusive culture and technology to become the best version of you. And we’re counting on your unique voice and perspective to help EY become even better, too. Join us and build an exceptional experience for yourself, and a better working world for all.
We are seeking a skilled **Senior Mainframe Modernization Specialist** to join our **AI\-Driven Modernization** practice, focused on transforming **legacy mainframe systems** into agile, efficient, and cloud\-ready platforms. The ideal candidate will bring a strong blend of **mainframe expertise, AI tools proficiency, and cloud technologies** along with **hands\-on collaboration** with cross\-functional teams to deliver scalable modernization outcomes.
You will work closely with technology leads, architects, and business stakeholders to analyse legacy applications, leverage AI/ML to automate code analysis and refactoring, and execute migration of mainframe workloads to modern distributed and cloud\-native platforms.
+ Document current\-state architecture, data flows, batch schedules, and integration points across legacy ecosystem components.
+ Perform impact analysis and complexity assessment for potential transitions to modern platforms.
+ Develop and fine\-tune AI\-powered assistants to accelerate system conversion and code translation (e.g., COBOL to Java/Python).
+ Apply prompt engineering and context engineering techniques to maximise accuracy and efficiency of LLM\-driven modernization workflows.
+ Participate in the design and implementation of target\-state architectures aligned with cloud\-native and microservices patterns.
+ Ensure code quality, testability, and maintainability throughout the modernization lifecycle.
+ Implement RESTful APIs, event\-driven architectures, and integration patterns as part of the target\-state solution.
+ Integrate modernized components with cloud\-native services, containerised workloads (Docker, Kubernetes), and CI/CD pipelines.
+ Familiarity with infrastructure\-as\-code, observability, and security best practices for modernized workloads.
+ Provide regular status updates on modernization progress, risks, and deliverables to project leads.
EY Global Delivery Services (GDS) is a dynamic and truly global delivery network. We work across six locations – Argentina, China, India, the Philippines, Poland and the UK – and with teams from all EY service lines, serving our clients locally and globally with innovation and at scale.
EY exists to build a better working world, helping to create long\-term value for clients, people and society and build trust in the capital markets.
Enabled by data and technology, diverse EY teams in over 150 countries provide trust through assurance and help clients grow, transform and operate.
Working across assurance, consulting, law, strategy, tax and transactions, EY teams ask better questions to find new answers for the complex issues facing our world today.
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