Senior C# Developer

Weekday AI

Gurugram, Haryana, India permanent

Posted: February 10, 2026

Required Skills

Job Description

This role is for one of the Weekday's clients

Min Experience: 8 years

Location: NCR, NOIDA

JobType: full-time

We are seeking an experienced Senior C# Developer to design, develop, and maintain high-quality C# applications across backend services and client-facing components. This role requires strong technical ownership, collaborative problem-solving, and a focus on building scalable, reliable, and maintainable software solutions.

Requirements:
Key Responsibilities

• Translate business requirements, user stories, and use cases into robust and scalable applications.
• Design, develop, and maintain efficient, reusable, and reliable C# code.
• Ensure high performance, quality, security, and responsiveness across applications.
• Identify performance bottlenecks, bugs, and architectural issues, and implement effective solutions.
• Drive adherence to coding standards, best practices, and clean architecture principles.
• Support code reviews, refactoring efforts, and automation to maintain long-term code health.
• Collaborate closely with cross-functional teams across engineering, product, and QA.
• Contribute to system design discussions and mentor junior developers when required.

Required Skills & Experience

• Strong proficiency in C# with deep understanding of the .NET ecosystem.
• Hands-on experience with .NET Framework / .NET Core and familiarity with Mono.
• Solid foundation in object-oriented programming and software design principles.
• Experience building reusable libraries and modular application components.
• Strong knowledge of design patterns, architectural patterns, and scalable system design.
• Expertise in concurrency and multithreading patterns in C#.
• Strong experience with Microsoft SQL Server and relational database design (RDBMS).
• Ability to design database schemas aligned with business workflows and data integrity.
• Familiarity with web application frameworks such as Nancy or similar frameworks.
• Experience with Windows Presentation Foundation (WPF) is a plus.
• Understanding of CLR internals, limitations, and performance considerations.
• Experience implementing automated testing frameworks and unit tests.
• Proficiency with version control systems such as Git, SVN, or Mercurial.
• Strong ability to write clean, readable, and maintainable code.

Key Skills

C# · .NET · Object-Oriented Programming · Multithreading · SQL Server · RDBMS · Design Patterns · WPF · Automated Testing · Git

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