Production Support Software Engineer, .NET

WTW group; Kolkata District; On-site; INR 1,500,000 - 2,300,000; Full time

Job summary

WTW is seeking a Production Support Software Engineer in Kolkata to work on C# and .NET applications within IT Operations and Production Support. You will investigate production issues, analyze logs, implement fixes, and contribute to small feature enhancements in partnership with the Individual Marketplace product and development teams.

The role requires 7+ years of software development or production support experience, strong C#/.NET skills, REST APIs, Azure App Services, and the ability to

Qualifications

• 7+ years of software development, production application support, or a combination.
• Strong C# and modern .NET development experience.
• Experience with REST APIs, distributed integrations, and .NET services.
• Experience with Azure App Services.
• Understanding of event-driven architecture and troubleshooting.
• Strong OO design and problem-solving skills.
• Experience with Git, unit tests, and code reviews.
• SQL knowledge and relational databases.
• Excellent written and verbal communication.
• Ability to collaborate with geographically distributed teams.

Responsibilities

• Investigate production application issues using logs and diagnostic tools.
• Analyze exceptions, REST APIs, service integrations, and event-driven components.
• Trace behavior across React front-end, .NET services, APIs, and Azure services.
• Develop evidence-based findings and identify owning teams.
• Reproduce defects and implement safe code fixes.
• Create branches, PRs and add unit tests; participate in reviews.
• Deliver small, well-defined enhancements with acceptance criteria.
• Provide changes to the domain team for testing and deployment.
• Support lower-severity incidents and escalations when needed.
• Document findings, causes, changes, risks, and handoff info.
• Collaborate with IT Ops, Product, and Engineering across India and the US.
• Use approved AI-assisted tools while maintaining standards.

Skills

C# and .NET

Debugging and problem-solving

Distributed systems concepts

Effective communication

Education

Bachelor’s degree in Computer Science, Information Technology, Software Engineering

Tools

Azure App Services

Git

SQL

REST APIs

Job description

Description

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 athttps://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.

Qualifications

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

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 [e-mail].