DENNIS_THANNER
[ Software engineer · Freelance · 8 yrs ]

Dennis
Thanner

I design and build software end to end. Language independent, with a preference for TypeScript and Python. Based in Munich.

Work with me →
[ 00 ] About

Software engineer with 8 years of experience, building products from first commit to production. Language independent, happiest in TypeScript and Python.

Read the CV →hello@dnnsthnnr.com
[ 01 ] Currently buildingAll projects →
01doqsDocument generation SaaS.Live ↗02makemapTurn your sport achievements into art.Live ↗03convertlocalLocal-first file conversion in the browser.Live ↗04rankedsudokuCompetitive sudoku.Live ↗
[ 02 ] Latest writingAll posts →
2025·06·07BuildingWeekend build: Free local first image conversion in the browser3 min read →2025·05·26System DesignTransactional Outbox: How to safely offload work into the background5 min read →2024·12·24System DesignIdempotent database inserts: Getting it right4 min read →