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Kai DumkeKD

Kai Dumke

iOS Developer | App MVPs & AI Features

€499/day
Berlin, DE
0-2 years
SwiftUI
iOS
Next.js
Cloudflare
Claude API

Average response time: 1 hour

Freelancer profile translated to English.
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About Kai

I develop iOS apps and Cloudflare-based web apps for founders and small businesses in the DACH region — fast, transparent, and without agency markups.

With AI-powered development (Claude Code), I deliver features and MVPs in half the usual time. You get a working app, not a project plan that takes six months.

Current Projects: I am currently working on two projects: an AI-powered mobile app and a digital operating system for a traffic safety company (Next.js, Cloudflare D1, automated workflows).

I work in German, respond quickly, and communicate clearly what is feasible — and what is not.

  • German

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Pal und Sohn
    Fullstack Developer & Tech Lead
    CIVIL ENGINEERING
    March 2026 - May 2026 (2 months)
    Berlin, Germany
    Development of the digital infrastructure for a family business in the traffic safety sector (palundsohn.com).

    Company website — live at palundsohn.com (Next.js, Cloudflare Pages)
    Internal business dashboard: Invoice management, KPI tracking, project overview, automated workflows
    AI Integration: nightly analysis via Claude Code Agent
    Tech Stack: Next.js · TypeScript · Cloudflare D1 · Cloudflare Workers
  • Indie Development
    iOS Developer (Indie)
    January 2026 - Today (7 months)
    Development of a mobile learning app from scratch to App Store Ready.
    Native iOS app (SwiftUI, iOS 17+) with AI-powered tutor (Claude API), Text-to-Speech & Speech Recognition (OpenAI Whisper)
    Cloudflare Workers backend with rate limiting and auth
    StoreKit 2 In-App Purchases, Spaced Repetition System
    10,000+ vocabulary words
    Cloudflare SwiftUI iOS Claude API OpenAI API

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