hartie.labs
DE
Automation · Generative AI · Stuttgart

Tools & techniques
that make an impact.

We take you from use-case consulting to delivery — developing SaaS and tools on AI-first principles, focused on automation and generative AI.

See the workStart a project
Based in
Stuttgart · DE
Focus
Automation · GenAI
Hosting
Germany · EU
hartie@labs — agent live
>$ claude "ship pricing page + checkout"
●plan3 steps · 2 files · 1 migration
●editapp/(shop)/pricing/page.tsx
●editlib/stripe/checkout.ts
●test12 passed · 0 failed
●deployk3s · hetzner · eu-central ✓
✓done in 3m 12s
ConceptPrototype developmentAI in productionOne point of contactBuilt AI-firstHosted in GermanyReply within 24 hAutomationGenerative AIConceptPrototype developmentAI in productionOne point of contactBuilt AI-firstHosted in GermanyReply within 24 hAutomationGenerative AI
What we do

Two ways to build.

01

SaaS Development

From idea to scalable product. We build modern web applications with proven technologies.

  • Full-stack development (React, Next.js, Node.js)
  • Cloud-native architecture (AWS, Vercel)
  • CI/CD pipelines & automated testing
  • MVP development in 4–8 weeks
02

Consulting & Advisory

Strategic technology consulting for companies that want to grow digitally.

  • Technical due diligence & audits
  • Architecture reviews & modernization
  • Product & technology roadmaps
  • Team coaching & process optimization
How we work

Concept → Prototype → Production.

01

Concept

We clarify the use-case, scope and architecture — one clear plan, one fixed price.

02

Prototype

A working prototype on the real problem, fast — testable, not just slides.

03

Production

We bring the AI solution cleanly into production: tested, monitored, hosted in Germany.

Our Approach

AI-first Engineering.

We follow AI-first principles in everything we build. Cutting-edge AI tools are an integral part of our development process — from code generation to architecture decisions.

Claude Code

AI-powered code editor by Anthropic — generates, refactors and debugs code directly in the CLI

OpenAI Codex

Code generation agent by OpenAI — translates natural language into working code via CLI and IDE

Qwen 3

Open-weight language model by Alibaba — ideal for specialized tasks and local hosting, privacy-friendly

Azure AI Foundry

Microsoft's enterprise AI platform — Model Catalog, Prompt Flow and managed endpoints in one

AWS Bedrock

Amazon's managed AI service — access to foundation models from Anthropic, Meta and Mistral via a single API

Self-developed

Tools & techniques I've developed.

Diktatheld
SaaS Platform

Diktatheld

Free learning platform for personalized German dictation exercises with speech output, printable practice packs, and learning games — for primary school children in grades 1–4.

Next.jsOpenAI
AI Casefile
SaaS Platform

AI Casefile

Compliance platform for documenting and managing AI systems — with registry, approval workflows, and audit trails in line with the EU AI Act.

Next.jsPostgreSQLAWS
Pith Lab
SaaS Platform

Pith Lab

Reading-memory tool for consulting teams: capture articles via browser extension and RSS — an AI-built wiki distills cited concepts, recallable as per-client briefings (text & audio), a topic map, and over MCP.

FastAPIMCP
Agentry
Platform · Concept

Agentry

Sandbox platform for managed agents: each run starts an isolated container, preconfigured via profiles (verticals). Live event stream, deterministic gates, and artifacts — one generic image, any number of use-cases.

FastAPIDockernanobot
Concept Visualizer
Concept · Coming Soon

Concept Visualizer

AI-powered flat-lay infographics that build up complex topics layer by layer — from photosynthesis to AI agents.

TypeScriptOpenAI
Knowledge Podcast
Concept · Coming Soon

Knowledge Podcast

AI-generated knowledge podcasts for kids (ages 6–12). Fully automated pipeline from research to finished audio with music and sound effects.

OpenAIElevenLabs
Infrastructure

Hosting & Cloud.

We host wherever you want it — EU, Germany or global. For cloud projects we use AWS, Microsoft Azure or Google Cloud Platform.

AWS

Global cloud infrastructure with the broadest service portfolio. From S3 and Lambda to Bedrock — for projects that need to scale worldwide.

Microsoft Azure

Enterprise cloud with seamless Microsoft integration. Azure AI Foundry, Cosmos DB and DevOps pipelines for enterprise clients.

Google Cloud Platform

Google's cloud with a strong data and AI platform — BigQuery, Vertex AI and GKE for data-intensive and ML-heavy projects.

Projects on this site run onHetzner· Germany
How we work

Pick the engagement that fits.

Scoped

Fixed-price project

A clearly defined scope, a fixed price, a fixed deadline. Best when you know what you need built.

  • Scope & estimate up front
  • Weekly demos
  • Handover + docs
Pricing on request
PopularOngoing

Sprint / retainer

Continuous development in weekly sprints. Flexible scope, steady pace, one accountable partner.

  • Weekly sprints
  • Flexible priorities
  • Cancel anytime
Pricing on request
Advisory

Advisory day

Architecture review, AI strategy, technical sparring — a focused day to unblock your team.

  • Architecture review
  • AI / agent strategy
  • Actionable roadmap
Pricing on request
Stefan Hartmann

Stefan Hartmann

Hartie Labs

About

I build AI solutions that run in production.

Hi, I'm Stefan. I focus on automation and generative AI — from GenAI and LLM prototypes and automated workflows to cloud architectures, ETL pipelines and model training for computer vision and NLP.

At Hartie Labs I turn promising AI use-cases into working prototypes fast, improve business processes with LLMs, and bring the result cleanly into production — built AI-first, hosted in Germany.

One point of contact from idea to launch: a clear plan, a fixed price, and everything is yours at the end.

Based in
Stuttgart · DE
Languages
DE · EN
Focus
Automation · GenAI
Reply
within 24 h
LinkedIn
Let's talk

A concrete project in mind?

Whether you have a concrete project or just want to explore options — we look forward to your message and will get back to you within 24 hours.

info@hartie-labs.comLinkedIn
Reply within 24 h