Full Stack .Net Developer- React.Js

Cognizant; Kolkata District, Pune District, Bengaluru; Hybrid; INR 1,200,000 - 1,800,000; Full time

Job summary

Cognizant in Kolkata is seeking a Full Stack Developer to design and build end-to-end solutions using C#, .NET Core, ASP.NET Core and React.js. You will create UI and backend services, integrate REST APIs, and ensure scalable, secure applications.

You'll work with AWS, containers, and CI/CD, applying AI-assisted tools like GitHub Copilot and BMAD methodology to accelerate delivery. Previous mortgage servicing domain experience is a plus.

Qualifications

• Experience in full stack development using C#, .NET Core, ASP.NET Core, and React.js.
• Design and develop end-to-end solutions across UI, APIs, business services, and databases.
• Build and consume REST APIs and integrate with external systems using SOAP/WSDL/XML.
• Develop responsive and scalable web/mobile applications using React.
• Strong experience with SQL Server/Oracle, Entity Framework Core, and database design.
• Design and implement cloud-native microservices and modern architectures.
• Experience with AWS, Docker, Kubernetes, and CI/CD pipelines.
• Implement secure authentication and authorization using OAuth/JWT.
• Collaborate with architects, product owners, QA teams, and stakeholders.
• Troubleshoot and optimize performance across frontend and backend.
• Mandatory: GitHub Copilot for AI-assisted development.
• Mandatory: BMAD (Build More with AI-Driven Development) methodology.
• Good to Have: SpecKit / Spec-Driven Development for acceleration.
• Good to Have: MSP/Mortgage Servicing domain experience.

Responsibilities

• Collaborate with architects, product owners, QA teams and business stakeholders to deliver features.
• Design, implement and test UI, APIs and backend services end-to-end.
• Build robust REST APIs and integrate with external systems using SOAP/WSDL/XML.
• Ensure security, performance, and scalability across the stack.
• Lead with AI-assisted development practices and modern CI/CD pipelines.

Skills

Full Stack Development

C#

NET Core

ASP.NET Core

React.js

REST APIs

OAuth/JWT authentication

AI-assisted development

BMAD methodology

SpecKit / Spec-Driven Development

Mortgage Servicing domain experience

Tools

AWS

Docker

Kubernetes

CI/CD pipelines

GitHub Copilot

Job description

Full Stack Developer (.NET + React)

• Experience in Full Stack Development using C#, .NET Core, ASP.NET Core, React.js.


• Design and develop end-to-end solutions across UI, APIs, business services, and databases.


• Build and consume REST APIs and integrate with external systems using SOAP/WSDL/XML.


• Develop responsive and scalable web/mobile applications using React.


• Strong experience with SQL Server/Oracle, Entity Framework Core, and database design.


• Design and implement cloud-native microservices using modern architecture principles.


• Experience with AWS, Docker, Kubernetes, and CI/CD pipelines.


• Implement secure authentication and authorization using OAuth/JWT.


• Collaborate with architects, product owners, QA teams, and business stakeholders.


• Troubleshoot and optimize application performance across frontend and backend layers.


• Mandatory: Strong hands-on experience with GitHub Copilot for AI-assisted software development.


• Mandatory: Experience working with BMAD (Build More with AI-Driven Development) methodology.


• Good to Have: Experience with SpecKit / Spec-Driven Development for requirement-to-code acceleration.


• Good to Have: MSP/Mortgage Servicing domain experience.