Position Overview
The Senior Software Engineer, .NET & WCF is responsible for supporting, enhancing, and modernizing a portfolio of business-critical .NET Framework and WCF-based applications. This role combines hands-on development, production support, technical leadership, and modernization planning to ensure legacy platforms remain secure, secure, and scalable while evolving toward modern .NET and cloud-ready architectures.
The successful candidate will work closely with Product, QA, DevOps, and Architecture teams to maintain existing services, resolve complex technical issues, improve performance, and lead the gradual transformation of legacy applications into modern API-driven solutions.
Key Responsibilities
Legacy Application Support & Enhancement
Support, maintain, and enhance existing .NET Framework and WCF-based applications and services.
Diagnose and resolve complex production and application issues across multiple environments.
Analyze system behaviour, logs, and performance metrics to identify root causes and implement fixes.




Develop new functionality within existing applications while maintaining system stability and backward compatibility.
Participate in on-call support and critical incident resolution activities as required.
Document system behavior, integrations, technical dependencies, and support procedures.
WCF Services & Integration Engineering
Design, develop, and maintain WCF services supporting internal and external business processes.
Support SOAP-based integrations and XML messaging frameworks.
Troubleshoot service communication, security, serialization, and interoperability issues.
Manage service contracts, endpoint configurations, bindings, and authentication mechanisms.
Work with business and technical stakeholders to support enterprise integration requirements.
Ensure integrations remain reliable, secure, and scalable.
Modernization & Migration Initiatives
Assess legacy applications and identify modernization opportunities.
Develop phase

📌 Senior Software Engineer, .NET (Bengaluru)
🏢 LSEG
📍 Bengaluru