About the Role :

We are looking for a Senior .NET Full Stack Developer to design, build and maintain secure, scalable applications for the Banking, Financial Services and Insurance (BFSI) domain. You will own solutions end to end, from system design and backend services to responsive React front ends, and deploy them on AWS while meeting strict security and compliance standards.

Key Responsibilities :

- Design, develop and maintain full stack applications using C#, .NET / .NET Core, ASP.NET Web API and React.

- Lead system design and architecture discussions for high-availability, high-volume financial applications.

- Apply OOP concepts, SOLID principles, design patterns and clean architecture to produce maintainable code.

- Build and consume RESTful APIs and microservices; integrate with core banking, payments and third-party systems.

- Deploy and manage applications on AWS (EC2, Lambda, S3, RDS, API Gateway, ECS/EKS, CloudWatch, IAM).

- Implement secure coding practices : authentication/authorization (OAuth2, JWT, SSO), data encryption, OWASP Top 10 mitigation, secure API design.

- Ensure compliance with BFSI regulatory and security requirements (e.g., PCI-DSS, data privacy, audit trails).

- Optimize performance, scalability and reliability of applications and databases.

- Write unit and integration tests, perform code reviews and mentor junior developers.

- Work with CI/CD pipelines and DevOps teams for automated build, test and deployment.

- Collaborate with product owners, architects, QA and business stakeholders in an Agile environment.

Required Skills & Qualifications :

- 7+ years of hands-on experience in software development.

- Strong expertise in C#, .NET Framework / .NET Core / .NET 6+, ASP.NET MVC and Web API.

- Strong front-end experience with React (hooks, state management such as Redux/Context), JavaScript/TypeScript, HTML5 and CSS3.

- Solid understanding of OOP, SOLID principles and design patterns (Factory, Repository, Dependency Injection, etc.).

- Proven experience in system design : microservices, distributed systems, scalability, caching, messaging/queues.

- Hands-on experience with AWS cloud services.

- Strong knowledge of application security principles and secure coding standards.

- Experience with SQL Server (or other RDBMS), stored procedures, query optimization, and Entity Framework / ORM tools.

- Prior experience in BFSI domain (banking, payments, lending, insurance, capital markets or wealth management).

- Experience with Git, CI/CD and Agile/Scrum methodologies.

Good to Have :

- Experience with Docker, Kubernetes, Terraform / CloudFormation.

- Knowledge of event-driven architecture (Kafka, SQS, SNS, RabbitMQ).

- Exposure to NoSQL databases (DynamoDB, MongoDB).

- AWS certification (Solutions Architect / Developer).

- Experience with performance testing, monitoring and observability tools.

Education :

- Bachelor's degree in Computer Science, Engineering or a related field.

Soft Skills :

- Strong problem-solving and analytical ability.

- Clear communication and stakeholder management.

- Ownership mindset and ability to mentor team members.