Technical Stack: 1. Backend Languages & Frameworks ● Primary: Node.js (Express, NestJS), Python (FastAPI, Django) ● Secondary: Go, Java/Kotlin (Spring) ● APIs: REST, GraphQL, gRPC 2. Databases & Storage ● SQL: PostgreSQL, MySQL ● NoSQL: MongoDB, DynamoDB ● Caching: Redis, Memcached ● Search: Elasticsearch, Algolia ● Storage/CDN: AWS S3, CloudFront ● Queues: Kafka, RabbitMQ, AWS SQS 3. Cloud & Infrastructure: ● Cloud: AWS (primary), GCP/Azure (nice to have) ● Compute: EC2, Lambda, ECS, EKS ● Infrastructure: Terraform, CloudFormation ● CI/CD: GitHub Actions, Jenkins, CircleCI ● Containers: Docker, Kubernetes 4. Monitoring & Operations ● Monitoring: Datadog, New Relic, CloudWatch ● Logging: ELK Stack, CloudWatch Logs ● Error Tracking: Sentry, Rollbar ● APM tools 5. Security & Auth ● Auth: JWT, OAuth 2.0, SAML ● Secrets: AWS Secrets Manager, Vault ● Security: Encryption (at rest/in transit), TLS/SSL, IAM