Backend & API Development
• Node.js (Express, NestJS)
• PHP (Laravel, Lumen)
• C# (.NET, ASP.NET Core)
• RESTful & GraphQL API design
• Microservices & monolithic architectures
Databases & Data Systems
• Relational: MySQL, PostgreSQL, SQLite
• NoSQL: MongoDB, Redis
• Data modeling, query optimization, indexing strategies
• Message queues: RabbitMQ, Kafka, SQS
Cloud & DevOps
• AWS (EC2, ECS, Lambda, API Gateway, RDS, S3, CloudWatch)
• Azure & Google Cloud Platform
• Infrastructure as Code: Terraform, CloudFormation
• CI/CD pipelines: GitHub Actions, GitLab CI, Bitbucket Pipelines
• Docker & Kubernetes
Security & Performance
• Authentication & Authorization (JWT, OAuth2, RBAC)
• Secure API design, rate limiting, and data protection
• Performance profiling, caching (Redis), and load balancing
• Logging, monitoring, and alerting strategies