# Stack — Dewei Zhai

Technologies sorted by depth within each group. "(deepest)" / "(some)" tags
reflect actual hands-on hours, not certification status.

## Technologies

### Cloud

- AWS (deepest)
- Azure
- Alibaba Cloud
- GCP

### ETL & data processing

- Spark
- Databricks
- dbt
- Glue
- Kafka
- DuckDB

### Warehouse / lakehouse

- Databricks
- Snowflake

### Languages

- Python
- SQL
- TypeScript
- Scala
- Shell
- Solidity (some)
- Cython (some)

### Orchestration & automation

- Airflow
- ADF
- Step Functions
- DataWorks

### DevOps & IaC

- Terraform
- CDK
- CDKTF
- Docker
- Kubernetes
- GitHub Actions
- GitLab CI/CD
- Jenkins
- Ansible

## Certifications

- AWS Certified Solutions Architect — Associate
- Databricks Certified Associate Developer for Apache Spark
- Databricks Certified Data Engineer Associate
- Certified Associate in Python Programming

## Education

- **MSc, Communication & Information Systems** — Xidian University (China)
- IDW-evaluated equivalent to MSc Computing Science (NL)

## Related

- About: /about.md
- Services: /services.md
- Cases: /cases.md
- JSON: /api/stack