Things I built after hours.

A scratchpad — side projects, scripts, notebooks, half-finished ideas. Nothing here is part of a job. Most of it just had to exist.

01 · Manifesto 2024

I treat math, code & a clean spreadsheet as the same kind of tool — a way to be precise about something fuzzy.

Notes Personal

tbt/ studio

a place for late-night code

03 · Repo

redshift-warehouse-helpers

Tiny Python utilities for inspecting, profiling and snapshotting tables in Redshift.

Python SQL

04 · Essay draft

Why I'd rather build the same query twice than ship a clever one.

05 · Snippet .py

# 14-day retention curve
def retention(events):
    cohort = events.groupby(
        ["signup_d", "days"]
    )["uid"].nunique()
    return cohort.unstack().div(
        cohort.xs(0, level=1), axis=0
    )

06 · Status live

Open to a quiet collab on data or ML.

Available · Istanbul

07 · Side product

cron/joy tiny tools that automate themselves

Beta Solo build

08 · GitHub 52w

A year of small commits.

Most of these are evening sessions. Some are a single test passing.

09 · Quote notebook

A model is a story the data agreed to tell you, on a Tuesday.

— scribbled in a margin, 2025

PHOTO · drop your own

— a desk somewhere in Istanbul

10 · Stat 2025

0.87

Dice coefficient on the brain-tumor U-Net side experiment (BraTS subset).

11 · Reading '25

Currently re-reading "How to Take Smart Notes" — and ignoring most of it.

12 · Repo

airflow-recipe-pack

DAG templates for daily ELT, retries, Slack alerts & cache warming.

Airflow Python

13 · Mark wip

∑/data

monogram studies

14 · Course

Code in Place — Stanford

Six weeks of evening Python, plus a final mini-app. Kept the notebook, deleted the slack.

2023 Self-paced

15 · Experiment '25

unet-mri-playground

Notebook companion to the TÜBİTAK research — U-Net variants, augmentation grids, Dice/IoU dashboards.

TensorFlow Notebook