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Coding
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Coding
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nicolaischneider/README.md

Hi, I'm Nicolai 👋

Software Architect at a German security company, working on mobile driver's licenses and digital identities. I design the protocols and APIs between mobile clients and backend services and lead the iOS side.

Issuing Presentation

Quantitative Trading

Since early 2026, I've been building and running an autonomous crypto trading research platform: an event-driven Python engine on PostgreSQL/TimescaleDB, fed by 12 exchanges and data sources. Every strategy change is backtest-gated before it goes to paper trading, and the system monitors itself with data-freshness checks, auto-restarts and alerting. (The code is private. Happy to walk through the architecture in a call).

Stack Status

Apps
100 Questions Social game, live since 2017, ~30k monthly users at peak. Flask backend on AWS. Live
Phases Privacy-first cycle tracker. Live

Tools
app-store-kw-rv-eng App Store keyword research with AI-generated keywords and traffic scoring. JavaScript
obsidian RAGsody Natural language queries over an Obsidian vault via RAG. Python
cmdmgr Custom shell commands in global and local scopes instead of a bloated .zshrc. Bash
mergix Sorts Git merge conflicts by type so you see what actually needs fixing. Use it daily. Python

Swift Packages

All in production in the apps above.
StoreKitTheKit StoreKit 2 wrapper with offline transaction caching and retry. SPM
SwiftCameraKit Photo and video capture. SPM
SwiftSocialKit Share to Instagram and TikTok. SPM
SimpleConstraints Thin layer over UIKit Auto Layout. SPM

Tech Stack

Working Learning

Pinned Loading

  1. app-store-kw-rv-eng app-store-kw-rv-eng Public

    App Store keyword research tool that scrapes app metadata and screenshots, uses AI to generate relevant keywords, then analyzes them with ASO metrics for traffic and difficulty.

    JavaScript 81 14

  2. StoreKitTheKit StoreKitTheKit Public

    A StoreKit2 wrapper for Swift. Fast integration. Works offline by caching transactions. Handles connection loss with automatic retries. Supports consumables, non-consumables and subscriptions.

    Swift 72 8

  3. obsidianRAGsody obsidianRAGsody Public

    CLI tool for intelligent Obsidian vault interaction using RAG. Query your notes with natural language and convert URLs to markdown files with AI-powered content extraction.

    Python 36 3

  4. SwiftSocialKit SwiftSocialKit Public

    SwiftSocialKit makes sharing photos and videos to Instagram, TikTok, or saving them to the device effortless with simple, native Swift functions.

    Swift 11 2

  5. SimpleConstraints SimpleConstraints Public

    SimpleConstraints is a Swift library designed to simplify the process of creating and managing constraints in UIKit. It provides a set of utilities that make it easier to align and position UI elem…

    Swift 3

  6. SwiftCameraKit SwiftCameraKit Public

    An iOS camera library for photo and video capture with an easy-to-use API, flash control, camera switching, and configurable settings.

    Swift 5