Production Support Software Engineer, .NET

About WTW:

WTW is a leading global advisory, broking and solutions company that helps clients around the world turn risk into a path for growth. With roots dating to 1828, WTW has 49,000 employees serving more than 140 countries. We design and deliver solutions that manage risk, optimize benefits, cultivate talent, and expand the power of capital to protect and strengthen institutions and individuals. Our unique perspective allows us to see the critical intersections between talent, assets and ideas – the dynamic formula that drives business performance. Together, we unlock potential. Learn more at https://www.wtwco.com/en-us.  

About the team:

The Individual Marketplace (IM) team supports people in the U.S. who need to purchase health coverage outside employer-based plans. It provides a seamless experience through Via Benefits, combining digital tools with licensed advisors to guide individuals—active employees, retirees, or those unaffiliated with an employer—through important health‑coverage decisions. IM helps employers offer greater choice, predictable costs, and reduced risk while ensuring individuals receive personalized, confidence‑building support throughout key life transitions. 

Summary:

WTW is seeking an experienced Production Support Software Engineer specializing in C# and .NET to join our growing IT Operations and Production Support team in Kolkata. This position combines production application support with hands-on software engineering. You will investigate application issues, analyze logs and service behavior, develop fixes for software defects, and implement small, well-defined application enhancements in partnership with the Individual Marketplace product and development teams.

The application environment includes C#, modern .NET, React, Azure App Services, micro-frontends, REST APIs, integrations, and event-driven architecture. The role’s primary focus is bug fixing and small feature development, followed by production investigation and troubleshooting.
 

Responsibilities:

• Investigate production application issues using application logs and approved diagnostic tools.
• Analyze exceptions, REST APIs, service integrations, micro-frontends, asynchronous events, and unexpected application behavior.
• Trace application behavior across React front-end components, .NET services, APIs, Azure App Services, and event-driven components.
• Develop evidence-based findings and identify the appropriate owning team.
• Distinguish between application, configuration, integration, infrastructure, and data-related issues.
• Reproduce software defects and develop safe, focused code corrections.
• Create source-code branches and pull requests, add appropriate unit tests, and participate in code reviews.
• Implement small, well-defined enhancements with documented acceptance criteria and approval from the owning product or domain team.
• Provide completed code changes to the Individual Marketplace domain team for functional testing, release approval, and production deployment.
• Participate primarily in lower-severity incident investigations and provide application-engineering escalation support when needed.
• Assist with higher-severity investigations when requested, while the owning domain and incident-management teams retain leadership responsibility.
• Document investigation findings, probable cause, code changes, testing considerations, risks, and handoff information.
• Collaborate with IT Operations, Product, and Engineering colleagues in India and the United States.
• Use approved AI-assisted development tools to improve investigation, coding, and testing productivity while maintaining security, quality, testing, and code-review standards.

Requirements:

• 7+ years of software development, production application support, or a combination of both.
• Strong software-development experience using C# and modern .NET.
• Experience developing and supporting modern .NET applications, REST APIs, application services, and distributed integrations.
• Experience developing or supporting applications deployed through Azure App Services.
• Understanding of event-driven architecture, including asynchronous processing, event consumers, failure handling, and troubleshooting across distributed components.
• Strong understanding of object-oriented design and software-engineering principles.
• Strong application-investigation and problem-solving skills.
• Experience analyzing application logs, exceptions, error messages, and service behavior.
• Ability to trace application behavior across multiple services and develop an evidence-based probable cause.
• Ability to reproduce software defects and translate investigation findings into safe, focused code changes.
• Experience writing and maintaining unit tests.
• Experience with Git-based source control, branches, pull requests, and code reviews.
• Familiarity with SQL and relational database concepts.
• Strong written and verbal communication skills.
• Ability to create clear technical documentation and handoff information.
• Experience collaborating with geographically distributed teams.

Bachelor’s degree in Computer Science, Information Technology, Software Engineering, or a related discipline.
 

Application Process:

• Application review 
• Pre-recorded video assessment 
• Live video interview – round 1 
• Live video interview – round 2 

We're committed to equal employment opportunity and provide application, interview and workplace adjustments and accommodations to all applicants. If you foresee any barriers, from the application process through to joining WTW, please email candidatehelpdesk@wtwco.com.