4Bell Technology
Sr. Software Development Engineer - .Net(R-2129)
1,500,000.00-2,000,000.00/A
Any Degree
IT (Information Technology)
Full-time
Gurgaon/Gurugram
10-Nov-2026
.NET .NET Core C# Web API React/Angular Javascript Linq Oops Concept SQL SQL query
Job Description
• Design and develop scalable backend applications using C# and .NET Core / .NET Framework• Build robust REST APIs and microservices using ASP.NET Core MVC that integrate with frontend applications and third-party services
• Write clean, well-documented, and maintainable code following SOLID principles and design patterns • Implement proper error handling, logging, and monitoring across applications
• Optimize application performance and resolve technical bottlenecks
• Design efficient database schemas and optimize SQL queries for performance and scalability
• Write and maintain stored procedures, functions, and triggers in PostgreSQL, SQL Server, or MySQL
• Perform database performance tuning and implement caching strategies where applicable
• Handle data migrations and manage both spatial and non-spatial datasets as required
• Write and maintain stored procedures, functions, and triggers in PostgreSQL, SQL Server, or MySQL
• Perform database performance tuning and implement caching strategies where applicable
• Handle data migrations and manage both spatial and non-spatial datasets as required
• Develop and maintain RESTful APIs with proper authentication, authorization, and security standards
• Integrate third-party services and APIs into Lepton's applications • Collaborate with frontend developers to define clear API contracts and ensure seamless integration
• Integrate third-party services and APIs into Lepton's applications • Collaborate with frontend developers to define clear API contracts and ensure seamless integration
• Document APIs and maintain API specifications for team reference
• Develop web applications using ASP.NET Core with modern architecture patterns (MVC, MVVM)
• Work with frontend technologies (HTML, CSS, JavaScript) and frontend frameworks (React, Angular, or similar) for full-stack contributions
• Implement responsive UI components and ensure cross-browser compatibility
• Ensure accessibility and performance best practices in web development
• Work with frontend technologies (HTML, CSS, JavaScript) and frontend frameworks (React, Angular, or similar) for full-stack contributions
• Implement responsive UI components and ensure cross-browser compatibility
• Ensure accessibility and performance best practices in web development
• Write unit tests using NUnit, xUnit, or MSTest to ensure code reliability and coverage
• Follow Test-Driven Development (TDD) and Behavior-Driven Development (BDD) methodologies
• Participate in code reviews and provide constructive feedback to team members
• Identify, document, and resolve bugs and performance issues
QUALIFICATION & SKILLSET
Must-Have Skills
• 5 years of professional experience in .NET development using C# and .NET Core / .NET Framework
• Strong command of OOP concepts, LINQ, async/await, delegates, events, and lambda expressions
• Hands-on experience building REST APIs using ASP.NET Core or ASP.NET Web API
• Solid understanding of relational databases (SQL Server, PostgreSQL, or MySQL) and SQL query optimization
• Proficiency with Git version control and collaborative development workflows
• Familiarity with Agile/Scrum development practices and working in iterative cycles
• Understanding of SOLID principles and common design patterns (MVC, Repository, Factory, etc.)
• Good problem-solving and debugging abilities
• Excellent communication and teamwork skills
• Follow Test-Driven Development (TDD) and Behavior-Driven Development (BDD) methodologies
• Participate in code reviews and provide constructive feedback to team members
• Identify, document, and resolve bugs and performance issues
QUALIFICATION & SKILLSET
Must-Have Skills
• 5 years of professional experience in .NET development using C# and .NET Core / .NET Framework
• Strong command of OOP concepts, LINQ, async/await, delegates, events, and lambda expressions
• Hands-on experience building REST APIs using ASP.NET Core or ASP.NET Web API
• Solid understanding of relational databases (SQL Server, PostgreSQL, or MySQL) and SQL query optimization
• Proficiency with Git version control and collaborative development workflows
• Familiarity with Agile/Scrum development practices and working in iterative cycles
• Understanding of SOLID principles and common design patterns (MVC, Repository, Factory, etc.)
• Good problem-solving and debugging abilities
• Excellent communication and teamwork skills