Data Engineer · Tampere, Finland
Raw data in.
Datasets people trust out.
I'm Hamza Sentongo — I build ETL/ELT pipelines with Python, SQL and PySpark, and shape them into reliable tables on Databricks, Delta Lake and Azure.
open to junior & associate data roles
About
Quiet infrastructure, done carefully.
I'm an early-career data engineer in Tampere, Finland, finishing an MSc in Computer Science and Electrical Engineering at Tampere University. My day-to-day is building ETL/ELT workflows, benchmarking storage formats, and exploring batch and streaming systems on Databricks.
What pulled me into this field is the link between data quality and everything downstream — models, dashboards, decisions. Good data work is invisible when it's right and expensive when it's wrong, and I like being responsible for that difference.
Right now I'm deepening my Azure and Delta Lake practice and looking for a team in Finland where I can own pipelines end to end.
- Role
- Associate Data Engineer
- Base
- Tampere, FI
- Degree
- MSc CS & EE (in progress)
- Focus
- ETL/ELT · Lakehouse
- Status
- Open to work
Stack
Tools I reach for.
Core
Processing
Platform
Pipeline & Ops
Selected work
Measured, not assumed.
Delta Data Formats Benchmarking
CSV vs Parquet vs Delta Lake on Databricks — read/write performance, storage footprint and schema-evolution behaviour, measured on real workloads instead of taken on faith.
View on GitHub ↗ 02 / streamingSpark ML & Streaming
Structured Streaming meets machine learning for retail sales analysis — one pipeline that turns incoming events into model-ready features and predictions.
View on GitHub ↗ 03 / etlTop Banks ETL Pipeline
A classic extract–transform–load run: pull bank market-cap data, convert values across currencies, and land clean results in CSV and SQLite.
View on GitHub ↗ 04 / orchestrationWeather Analytics Pipeline
An end-to-end orchestrated pipeline: pull weather data from open APIs, land it in PostgreSQL, and shape it into a star schema for analytics — scheduled with Airflow and backed by unit tests.
View on GitHub ↗Credentials
Paper trail.
Associate Data Engineer
DataCamp — certification
Data Engineering Zoomcamp
DataTalksClub — end-to-end pipeline bootcamp
MSc, Computer Science & Electrical Engineering
Tampere University