Built and optimized RESTful APIs and microservices using ASP.NET Core (.NET 6+), Spring Boot, and Express.js, applying DDD principles for scalable architectures.

Integrated SQL Server, PostgreSQL, and MongoDB, implementing Redis caching, query optimization, and async data processing for high-performance operations.

Applied OAuth2/JWT authentication, RBAC, and API gateways with Spring Cloud Gateway and reverse proxy routing for secure, distributed systems.

Automated CI/CD pipelines using GitLab CI, GitHub Actions, and Jenkins, deploying containerized services via Docker, Kubernetes, Terraform, and Helm.

Deployed across AWS (ECS/EKS, Lambda) and Azure (App Service, Functions) with multi-cloud scalability and reproducible IaC environments.

Enhanced Angular frontends with lazy loading, OnPush detection, RxJS/NgRx, and AOT compilation for improved performance and responsiveness.

Strengthened security, monitoring, and observability with Vault, AWS KMS, Azure Key Vault, Prometheus, Grafana, and the ELK stack.

Built scalable APIs and web apps using C#, ASP.NET Core, and .NET 6+.

Developed Razor Pages and Blazor components for dynamic, responsive UIs.

Integrated Entity Framework Core and LINQ for efficient data access.

Implemented JWT/OAuth2 authentication with role-based authorization.

Applied caching (Redis), async programming, and CI/CD automation with Docker and Azure DevOps.

Designed and deployed RESTful APIs and microservices with Node.js (v14+), Express.js, and TypeScript, optimized for performance and scalability.

Built ETL pipelines and data workflows using Python (Pandas, SQLAlchemy, Celery) and developed scalable APIs with FastAPI and Django REST Framework.

Secured APIs with JWT, OAuth2, RBAC, and rate limiting; implemented React and Angular frontends with TypeScript, Redux-Saga, and performance optimizations.

Deployed services to AWS and GCP using Kubernetes (EKS/GKE), Terraform, and Helm; automated observability with Prometheus, Grafana, and the ELK stack.