Senior C# .NET Developer

Job Title: Senior C#/.NET Developer WPF UI | FinTech | Low-Latency Systems
Location: Sector 21, Gurgaon
Experience: 8+ Years
Employment Type: Contract
Work Mode: Initial 1 Month Onsite in Gurgaon

Job Summary
We are looking for a Senior C#/.NET Developer with strong hands-on experience in WPF and XAML to join an ongoing technology project.
This is an established application, not a greenfield project. The ideal candidate should be comfortable understanding an existing codebase, architecture, and business logic and becoming productive quickly.
Experience in FinTech, Capital Markets, Trading, Banking, or Financial Services will be a strong advantage. Experience with low-latency, high-performance, or real-time systems will be highly valued.

Key Responsibilities:

• Develop and enhance an existing C#/.NET application.
• Build and maintain WPF desktop applications using C# and XAML.
• Work with MVVM, data binding, commands, and reusable UI components.
• Develop new features and enhance existing functionality.
• Debug and troubleshoot application and UI issues.
• Analyse and optimise application performance.
• Participate in code reviews and maintain code quality.
• Perform unit, functional, and regression testing.
• Identify root causes and validate fixes.
• Work closely with developers, business stakeholders, and other team members.
• Document technical changes where required.

Required Skills:

• Strong hands-on experience with C#
• .NET / .NET Framework
• WPF
• XAML
• Object-Oriented Programming
• Design Patterns & SOLID principles
• Multithreading / Asynchronous Programming
• LINQ
• REST APIs / Web Services
• SQL / Relational Databases
• Debugging & Performance Optimisation
• Unit Testing
• Git / Source Control
• Strong WPF Experience Required

Candidates should have practical experience with:

• XAML
• Data Binding
• MVVM
• Commands
• Custom Controls
• UI Performance Optimisation
• Complex Desktop Applications
• Reusable UI Components
• UI & Application-Level Debugging

Preferred Experience
Experience in any of the following will be an advantage:

• FinTech / Financial Services
• Capital Markets
• Trading Systems
• Banking Applications
• Market Data Applications
• Order Management Systems
• Risk Systems
• Real-time / High-performance applications

Experience with low-latency systems, multithreading, concurrency, memory optimisation, performance profiling, or real-time data processing will be a strong differentiator.

Candidate Profile
We are looking for someone who is:

• Strong in C#/.NET and WPF development.
• Comfortable working with an existing and complex codebase.
• Strong in debugging and problem-solving.
• Able to work independently and take ownership.
• Detail-oriented and quality-conscious.
• Comfortable working with both development and testing.
• Able to understand business requirements and translate them into technical solutions.

Important Location Requirement: Candidates must be based in Delhi/Gurgaon/NCR and be available to work from our Gurgaon office for a minimum initial period of 1 month.
The initial onsite period will help the candidate understand the existing application, architecture, business requirements, and team workflows.

Please apply only if you can meet the initial Gurgaon onsite requirement.