Role : Senior .NET Full Stack Developer

Technology : ASP.NET, .NET Core, React, Oracle

Experience : 5-8 Years

Work Location : HYD, Mumbai, India

Job Summary

We are seeking an experienced Senior .NET Full Stack Developer to support, enhance, and modernize a portfolio of enterprise applications. The candidate will be responsible for maintaining applications built on ASP.NET 4.8 and .NET Core, supporting existing Windows Services, and driving UI modernization initiatives using React.js.

The application landscape consists of 2 applications already migrated to .NET Core and 2 applications currently running on ASP.NET 4.8, which will be migrated over time. The role also involves supporting Oracle 19c databases, ARP Authentication, SpreadsheetGear-based Excel processing, AWS S3 file storage integrations, and day-to-day production support activities.

The ideal candidate should possess strong development, troubleshooting, modernization, and support experience in enterprise application environments.

Key Responsibilities

Application Development & Modernization

- Develop, maintain, and enhance applications built on ASP.NET 4.8, .NET Core, and C#.
- Support and enhance 2 existing .NET Core applications.
- Maintain and modernize 2 ASP.NET 4.8 applications.
- Participate in migration initiatives from ASP.NET 4.8 to React and .NET Core architecture.
- Design and develop REST APIs, business services, and reusable components.
- Implement scalable, secure, and high-performance application solutions.

Front-End Development

- Develop modern and responsive user interfaces using React.js.




- Convert existing ASP.NET pages into React-based components.
- Work with JavaScript, TypeScript, HTML5, CSS3, and Bootstrap.
- Improve application usability, accessibility, and performance.

Production Support

- Provide L2/L3 production support for business-critical applications.
- Investigate and resolve production issues within SLA timelines.
- Perform root cause analysis (RCA) and implement preventive measures.
- Analyze application logs, database issues, and integration failures.
- Support application releases, deployments, and post-deployment validation.

Windows Services Support

- Support and enhance existing Windows Services.
- Troubleshoot service failures, scheduling issues, and processing bottlenecks.
- Ensure continuous availability and stability of batch processing services.

Oracle Database Development

- Develop and maintain Oracle 19c database objects.
- Create and optimize Stored Procedures, Packages, Views, Functions, and Queries.
- Perform query optimization and database performance tuning.
- Support data correction and migration activities.

Excel & Spreadsheet Processing

- Support SpreadsheetGear-based functionality.
- Maintain Excel import/export and transaction processing modules.




- Troubleshoot business-critical data upload and reporting issues.
- Support bulk data loading and file generation processes.

Cloud & File Storage Integration

- Support integrations with AWS S3 file storage.
- Develop and maintain file upload, download, archival, and processing solutions.
- Troubleshoot cloud storage connectivity and file-processing issues.

Security Compliance & Vulnerability Management

- Analyze and remediate findings from:
- Vulnerability Assessment (VA)
- Energetic Vulnerability Assessment (DVA)
- Security Scans
- Code Review Findings

- Work closely with Information Security teams to resolve security vulnerabilities.
- Ensure applications comply with organizational security and compliance standards.
- Perform security fixes and validation before production deployment.

Source Control & DevOps

- Manage source code using Azure DevOps (ADO Repositories).
- Participate in code reviews and pull request processes.
- Support CI/CD pipelines and release activities.
- Follow enterprise development standards and branching strategies.

Required Technical Skills

Backend

- C#
- ASP.NET MVC/Web Forms
- ASP.NET Framework 4.8
- .NET Core /.NET 6+
- Entity Framework
- REST API Development
- Web API
- LINQ

Frontend

- React.js
- JavaScript
- TypeScript
- HTML5
- CSS3
- Bootstrap

Database

- Oracle 19c/Postgredsql
- SQL
- PL/SQL
- Query Optimization
- Performance Tuning

Cloud & Integration

- AWS S3 File Storage Integration
- REST APIs
- JSON/XML Processing

📌 Dotnet Full stack developer (Hyderabad)
🏢 Crisil
📍 Hyderabad