Senior Software Engineer (.Net with Java)

About the Role: Grade Level (for internal use): 10S&P Global Dow Jones Indices The Role: Senior Software Engineer (.Net with 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 automation, branching/release strategy, and environment promotion.  Drive test strategy across stacks: unit, contract, integration, regression, and end-to-end tests; improve automation coverage.  Improve build/release reliability; reduce cycle time; implement guardrails (quality gates, vulnerability scanning as applicable).  Security, compliance, and risk management  Embed secure engineering practices (threat modelling participation, secure coding standards, dependency hygiene).  Ensure appropriate handling of secrets/credentials, least-privilege access, and auditability.  Identify technical risks early (data migration risk, downtime, coupling, unknown dependencies) and drive mitigation plans.  What We’re Looking For:  Basic Qualification:  Bachelor's degree in Computer Science, Information Systems or Engineering is required, or in lieu, a demonstrated equivalence in work experience.   (5 -7 ) years of IT experience in application development and support.  Strong Experience with Java, J2EE, JMS including Spring Framework