Dotnet Fullstack Developer (React & AI)

Cognizant; Kolkata District; Hybrid; INR 1,500,000 - 2,100,000; Full time

Job summary

Cognizant in India is seeking an experienced AI augmented .NET Full Stack Engineer to design, develop and optimize high‑performance web and cloud applications using .NET Framework, ASP.NET Core Web API, React.js, Python, SQL, PostgreSQL, Kafka and Azure services, leveraging GenAI tools like Devin and Claude.

Apply seven to eleven years of engineering experience to build secure, scalable, and resilient platforms that support complex cards and payments processing in a hybrid work model.

Qualifications

• Seven to eleven years of software engineering experience delivering complex enterprise applications.
• Strong proficiency with aspnet core web api and net framework for secure, performant backend services.
• Advanced skills in SQL and PostgreSQL, including query optimization and transactions.
• Experience with Kafka for pub/sub, stream processing and inter-service integration.
• Hands-on experience with React.js to build modular, testable front end components.
• Practical knowledge of Azure services (App Services, storage, monitoring).
• Familiarity with cards and payments domain and agile methodologies.

Responsibilities

• Design and develop backend services using aspnet core and .NET Framework for enterprise applications in a hybrid environment.
• Optimize database schemas and queries in PostgreSQL and SQL Server to ensure high performance.
• Configure and maintain event-driven architectures using Kafka for resilient messaging pipelines.
• Create responsive UIs with React.js for accessible, cross‑browser experiences.
• Integrate Python components to automate data processing workflows and analytics features.
• Leverage Azure cloud services for deployment, monitoring and cost optimization.
• Collaborate with cross-functional teams to refine requirements and translate into technical solutions.
• Apply secure coding practices and conduct code reviews and unit tests before production releases.
• Participate in system design discussions to align with business objectives and long-term maintainability.
• Contribute to CI/CD pipelines to shorten delivery cycles and improve reliability.
• Investigate production issues and implement durable fixes to improve system stability.
• Document technical designs, APIs, and operational procedures for onboarding and knowledge sharing.
• Engage in innovation initiatives to enhance cards and payments capabilities.

Skills

aspnet core web api

net framework

react js

python

postgresql

kafka

azure services

Job description

Job Summary

Serve as an AI augmented .Net Full Stack Engineer responsible for designing developing and optimizing high performance web and cloud applications using net framework aspnet core web api react js python sql postgresql kafka and azure services utilizing Agentic AI solutions through GenAI tools like Devin and Claude. Apply seven to eleven years of engineering experience to build secure scalable and resilient platforms that support complex cards and payments processing.

Responsibilities

• Design and develop robust backend services using aspnet core web api and net framework to deliver secure and scalable business capabilities for enterprise applications in a hybrid work model
• Implement and optimize database schemas and queries in postgresql and sql to ensure high performance data access patterns and reliable transaction processing for complex workloads
• Configure and maintain event driven architectures using kafka to enable resilient messaging pipelines and near real time data integration across distributed systems
• Create responsive and maintainable user interfaces with react js that deliver intuitive digital experiences and support accessibility and usability across modern browsers
• Integrate python based components and scripts to automate data processing workflows and enhance analytics driven features that support operational and strategic decisions
• Leverage azure cloud services for deployment monitoring and resource optimization to ensure applications remain scalable available and cost efficient under varying demand
• Collaborate with cross functional teams in a day shift hybrid environment to refine requirements estimate effort and translate business needs into well structured technical solutions
• Apply secure coding practices and conduct thorough code reviews and unit testing to safeguard sensitive information and reduce defects before release into production environments
• Participate in system design and architectural discussions to align technical decisions with company objectives and support long term maintainability of core platforms
• Contribute to continuous integration and delivery pipelines by improving build automation test coverage and release practices to shorten delivery cycles and enhance reliability
• Investigate production issues by performing root cause analysis and implementing durable fixes that improve system stability and strengthen customer confidence in services
• Document technical designs apis and operational procedures with clear maintainable artifacts that help teams onboard quickly and support sustainable knowledge sharing
• Engage proactively in innovation and optimization initiatives that enhance cards and payments capabilities where applicable and deliver measurable value for customers and society

Qualifications

• Demonstrate seven to eleven years of experience as a software engineer with a consistent record of delivering complex enterprise applications in hybrid work environments
• Show strong proficiency in aspnet core web api and net framework for building secure performant and modular backend services aligned with modern development practices
• Exhibit advanced skills in sql and postgresql including query optimization indexing and transaction management to support high volume data operations
• Display hands on experience with kafka for implementing publish subscribe patterns stream processing and reliable integration between microservices
• Provide solid experience with react js to create modular and testable front end components that integrate seamlessly with backend apis and deliver responsive interfaces
• Present practical experience with python for automation data transformation and utility scripting that complements core application capabilities
• Illustrate working knowledge of azure services such as app services storage and monitoring tools to design and operate cloud based solutions efficiently
• Highlight understanding of cards and payments domain concepts as a valuable plus including transaction flows authorization settlement and associated compliance considerations
• Emphasize familiarity with agile methodologies and collaborative tools to participate effectively in sprint planning code reviews and iterative delivery
• Show commitment to quality through experience with testing frameworks performance tuning and observability practices that maintain reliability at scale
• Demonstrate strong problem solving and analytical skills applied to debugging complex issues and proposing clear actionable technical improvements
• Display effective communication and documentation abilities that foster alignment within diverse teams and support clear handoffs across global stakeholders

Certifications Required

Preferred certifications include microsoft certified azure developer associate and optional postgres or kafka related credentials