Thinks in proofs, executes in consulting, builds in code.

BSc Mathematics, Heidelberg · MSc TU Munich from Oct 2026

About

The three-in-one

I'm a mathematician finishing my BSc thesis in symplectic geometry at Heidelberg under Prof. Dr. Peter Albers — and currently interning full-time at osapiens in Madrid. In October I start an MSc at TU Munich. I'm also a consulting operator: three years leading teams, controlling projects, and building pipelines at GalileiConsult e.V. And I build things: a SwiftUI pantry app, a GitHub issue CLI, a YouTube automation pipeline, a custom MCP server. Most candidates come from one of these three worlds. I work at all three intersections simultaneously.

Experience

Where I've worked

Projects

Things I've built

Picnic

Swift SwiftUI SwiftData Veryfi OCR

iOS pantry and grocery app. Scan receipts with Veryfi OCR to auto-populate pantry items. Voice food logging via Apple's Speech framework. Runs entirely on-device.

Receipt scan → pantry update in <3 seconds

issue-hunter

Node.js TypeScript Claude API

CLI that finds beginner-friendly GitHub issues across repos. Uses the Claude API to filter and rank issues by actual complexity, not just the "good first issue" label.

Open-source contribution on-ramp

YouTube Insights

Python YouTube API Claude API

Automated pipeline that fetches transcripts, summarizes videos, and extracts key insights. Runs on a cron schedule; outputs structured markdown reports.

Saves 2+ hours per research session

Picnic MCP Server

Node.js MCP Picnic API

Custom Model Context Protocol server that lets an AI assistant browse, search, and order groceries from Picnic directly. Natural-language grocery ordering via Claude.

Natural-language grocery ordering

Playground

Math, live

Two examples of theorems that I found very pleasing and offer a nice visual presentation :)

four-color.js

Greedy DSATUR coloring of a random planar graph. The Four Color Theorem guarantees ≤ 4 colors suffice for any planar graph.

Education

Academic background

Skills

Languages & tools

Natural Languages
German (native) English (fluent) Latin Ancient Greek Spanish (basic)
Programming
Python C++ Swift / SwiftUI Node.js TypeScript SQL Azure DevOps Power Automate
Business Applications
Planhat Shopify HubSpot

Contact

Get in touch

carl.walter@gmx.net