Senior Full-Stack Developer – .NET Core with React

Intellistaff Services Pvt. Ltd; Pune District; Hybrid; INR 1,800,000 - 3,500,000; Full time

Job summary

Intellistaff Services Pvt. Ltd is seeking Senior Full-Stack Developers with strong C#, .NET Core and React to build scalable enterprise applications. The role is backend-focused (80-90% .NET Core, 10-20% React) and prefers Banking/BFSI, Capital Markets, or FinTech domain experience.

You will design APIs, optimize SQL, work on XML-based integrations and collaborate with Business Analysts, Architects and QA in a hybrid work model based in Chennai or Pune.

Qualifications

• 5–8 years of backend or full-stack development experience.
• Strong C# and .NET Core expertise.
• Experience building enterprise-scale applications and REST APIs.

Responsibilities

• Design, develop and maintain scalable applications with C# and .NET Core.
• Develop robust backend services and REST APIs.
• Maintain user interfaces using React.
• Build event-driven distributed architectures.
• Work with XML, XSD, XPath and XML-based workflows.
• Develop and optimize SQL queries and database components.
• Integrate systems via APIs and messaging.
• Translate requirements into scalable software solutions.
• Participate in code reviews, debugging and performance tuning.
• Develop unit and integration tests.
• Troubleshoot production issues and perform root-cause analysis.
• Work with Business Analysts, Architects, QA and development teams.
• Contribute to coding standards and engineering docs.

Skills

C#

.NET Core

REST APIs

OOP

Design Patterns

Async Programming

Tools

Entity Framework

ADO.NET

Dapper

Job description

We are looking for experienced Senior Full-Stack Developers with strong expertise in C#, .NET Core and React to develop and maintain scalable enterprise applications.

The role is primarily backend-focused, with approximately 80-90% .NET Core development and 10-20% React development.

Candidates with experience in Banking, BFSI, Financial Services, Capital Markets, Stock Exchange, Trading or FinTech applications will be preferred.

Experience: 5–8 Years

Job Locations: Chennai / Pune

Employment Type: Full-Time

Work Mode: Hybrid

Key Responsibilities

• Design, develop and maintain scalable applications using C# and .NET Core.
• Develop robust backend services and REST APIs using modern .NET technologies.
• Develop and maintain user interfaces using React.
• Design and implement event-driven and distributed application architectures.
• Work with XML, XSD, XPath and XML-based integration workflows.
• Develop and optimize SQL queries, stored procedures and database components.
• Integrate applications with internal and external systems using APIs, messaging and event-driven mechanisms.
• Translate business and technical requirements into scalable software solutions.
• Participate in code reviews, technical discussions, debugging and performance tuning.
• Develop unit and integration tests.
• Troubleshoot complex production issues and perform root-cause analysis.
• Work closely with Business Analysts, Architects, QA and development teams.
• Contribute to coding standards, technical documentation and engineering best practices.

Mandatory Technical Skills

• Strong hands-on experience with C#
• Strong experience with .NET Core / ASP.NET Core
• REST APIs / Web API
• Object-Oriented Programming
• Design Patterns and Clean Coding Practices
• Asynchronous Programming and Multithreading

Frontend

• React / ReactJS
• HTML5 / CSS3
• REST API integration with frontend applications

Database

• Strong SQL and relational database knowledge
• Query optimization and performance tuning
• Entity Framework / ADO.NET / Dapper

Integration

• XML
• XSD
• XPath
• XML validation and transformations
• API / Messaging / Event-driven integrations

Preferred Experience

• Banking / BFSI
• Capital Markets
• Stock Exchange
• Trading Applications
• FinTech

Experience with Kafka, RabbitMQ or other messaging/event-streaming technologies will be an added advantage.

Candidate Profile

We are looking for candidates who are:

• Strong in backend development using C# and .NET Core
• Comfortable working with React as part of full-stack development
• Experienced in building enterprise-grade applications
• Strong in API development and database programming
• Familiar with distributed/event-driven systems
• Strong in debugging and production issue resolution
• Comfortable working in Agile/Scrum environments

Location

Candidates who are currently based in or willing to work from Chennai or Pune are preferred.