SeniorSoftwareEngineer(.Net,Java)

# **About the Role:** **Grade Level (for internal use):** 10 **S &P Global Dow Jones Indices** **The Role** : Senior Software Engineer (.Net, Java) S&P Dow Jones Indices a global leader in providing investable and benchmark indices to the financial markets, is looking for a Senior Lead Application Developer to join our technology team. **The Team** : You will be part of global technology team comprising of Dev, QA and BA teams and will be responsible for analysis, design, development and testing. **The Impact** : You will be working on one of the core technology platforms responsible for index calculations as well as dissemination of index values **What’s in it for you** : You will have the opportunity to work on the enhancements to the existing index calculation system as well as implement new methodologies as required **Responsibilities:** **Modernization strategy (from .NET MVC to cloud-native)** Assess current .NET/C#/MVC applications (dependencies, coupling, data access patterns, hosting, performance bottlenecks, security gaps). Define modernization approach per capability: rehost/refactor/re-architect/replace, prioritizing quick wins and risk reduction. **AWS cloud-native implementation** Design and guide build-out of cloud foundations required for modern apps (networking, environments, security, observability, CI/CD). Ensure production readiness: performance testing strategy, failure-mode testing, rollout/rollback procedures. **Migration to existing AWS/Java (Spring/Hibernate) platforms** Lead functional migration from .NET code paths to Java-based services while maintaining correctness and availability. Define interoperability approach during transition (API contracts, adapters, strangler pattern, feature toggles, compatibility layers). Partner with platform owners to ensure migrated components comply with existing Java platform conventions and deployment pipelines. **Engineering excellence & SDLC ** Set standards for clean code, code reviews, test automatio