Python, Java, JavaScript, TypeScript, SQL, Scala, Kotlin, C, C++, Shell/Bash, AWS (EC2, Lambda, SAM, CloudFormation, CodePipeline, CodeBuild, CodeDeploy, ECR, S3), GCP (Dataproc, GCS, BigQuery, GCE), Azure, Terraform, Infrastructure as Code, Docker, Kubernetes, CI/CD Pipelines, Jenkins, Git, Linux/UNIX Systems Administration, Automated Testing, Image Build & Delivery Pipelines, PySpark, Apache Spark, Airflow, Kafka, ETL/ELT, Python Packaging, Shell Scripting, Pipeline Orchestration, Batch & Streaming Processing, BigQuery, Elasticsearch, DynamoDB, MySQL, PostgreSQL, Data Modeling, Query Optimization, RESTful APIs, API Gateway, Microservices, Spring Boot, Flask, Django, Express.js, OAuth 2.0, OpenSearch, Grafana, Data Quality & Validation, IAM, Cloud Security, Agile/Scrum, Event-Driven Architecture (SNS, SQS, EventBridge), Code Reviews