Programming
python / julia / php
Cloud
AWS / GCP
Data
RDB: MySQL / MariaDB / PostgreSQL
NoSQL: MongoDB / Cassandra / Elasticsearch
Message Queue Server: Apache Pulsar / Apache Kafka
OLAP Tool: Apache Druid / Yandex Clickhouse
DataFlow & WorkFlow Tools: Apache Airflow / Apache NiFi
Visualization Tool: Redash / Apache Superset
Distributed System: Hadoop / Spark
Schema Tool: Schema Registry
Machine Learning
Data Preprocessing & Analysis: pandas / Dask / Vaex / numpy
ML Tool: scikit-learn / pytorch / pytorch-lightning / torchmetics
ML Monitoring: Weight & Bias
NLP: Huggingface transformer / Huggingface dataset
Others
Docker / docker-compose / git / jenkins / Django / FastAPI