Technical Stack

Honest signal: Primary means I reach for it first. Familiar means I've shipped something with it but wouldn't claim depth.

● Primary● Proficient● Familiar

Data

Querying, wrangling, and visualising data

Python

Pandas · Polars · data wrangling

SQL

CTEs · window functions · complex joins

Tableau

interactive dashboards · LOD expressions

Excel

Power Query · pivot tables · VLOOKUP

Building and evaluating predictive systems

scikit-learn

pipelines · cross-validation

LightGBM / XGBoost

gradient boosting · hyperparameter tuning

Polars

fast dataframes · lazy evaluation

Matplotlib / Seaborn

model diagnostics · EDA

General-purpose and systems programming

Python

primary language across all domains

C++

high-performance code · pybind11

statistical analysis

TypeScript / Java

web apps · JVM fundamentals

Infrastructure, APIs, and workflow

Git

version control · branching strategy

GitHub Actions

CI/CD pipelines · automation

Docker

containerisation · deployment

Snowflake

cloud data warehouse

Linux / Bash

scripting · server environments