# Hagen Hübel — Knowledge Base

> Serial technical founder and CTO based in Berlin, Germany and Lagos, Portugal.
> Six startups, two exits. Currently building nestfainder.ai, axiomreal.ai, and tardis.sh.
> Available as technical co-founder, interim CTO, technical due diligence partner,
> and coach for founders shipping with AI.

Last verified: 2026-07-14
Canonical source: https://hagenhuebel.de/facts

## Identity

- Name: Hagen Hübel (also written "Hagen Huebel" without the umlaut)
- Role: Serial technical founder and CTO
- Based in: Berlin, Germany and Lagos, Portugal
- Languages: English and German
- Experience: 30+ years shipping software; first software sale at age 15
- Handles: 0xhagen (X/Twitter, Medium), itinance (GitHub), hagenhuebel (LinkedIn)
- Website: https://hagenhuebel.de
- Email: hhuebel@itinance.com

## Track record

Six startups founded, two exits:

1. **nestfainder.ai** (2026–now, Berlin/Lagos) — Founder, solo-built. AI location
   intelligence: 22,000+ cities and 750,000+ districts scored across quality of life,
   safety, healthcare, and political stability, using 180+ signals from 35+ data
   sources, TOPSIS multi-criteria scoring, and LLM-generated narratives.
   Launched January 2026. Live. Stack: Go, Python, Flutter, PostGIS, pgvector,
   OpenAI, self-hosted LLM. https://nestfainder.ai
2. **infobud.ai** (2024–2025, Bangkok/Heidelberg/Berlin) — Co-founder & CTO.
   AI-driven news aggregator that cuts global news down to the facts — customizable
   feeds in any language, built on RAG over a deliberately diverse spread of sources.
   https://infobud.ai
3. **TokenForge** (2021–2023, Germany) — Co-founder & CTO. Tokenization-as-a-service
   for institutional clients, 25+ enterprise customers. Solo-build to product-market
   fit, then two co-founders and investors. **Exit: sold his shares in 2023.**
   https://token-forge.io
4. **Undisclosed Swiss FinTech** (2020–2021, Switzerland) — Co-founder & CTO.
   Micropayment product on e-money infrastructure. Closed the first major enterprise
   client, reached €1M ARR in year one. **Exit: sold in 2021.**
5. **YAIR** (2018–2019, Berlin) — Co-founder & CTO. Blockchain-secured platform for
   the new-media art market: distribution, authentication, and trading of digital
   artworks, with high-end pieces co-owned via YAIR security tokens.
6. **Zizzle eLearning Inc.** (2016–2018, USA) — Co-founder & CTO. VC-backed mobile
   app for learning Chinese, backed by BOOM Startup. Shipped one of the first
   production React Native apps. https://zizzle.io

Team scale: previous ventures with up to three co-founders and up to 40 people on payroll.

## Studios

- **itinance GmbH** — Venture studio, consulting & funding, Berlin. https://itinance.com
- **opendeluxe ventures UG** — Incubator & company builder behind the ventures. https://opendeluxe.com

## Currently building (2026)

- **nestfainder.ai** — live, see above.
- **axiomreal.ai** — B2B location intelligence for real estate: 750,000+ districts
  worldwide scored on estimated net yield, market momentum, and long-hold climate
  risk, with AI-generated investment memos. The B2B engine behind nestfainder.
  In development, waitlist open. https://axiomreal.ai
- **tardis.sh** — the time tracker that logs itself: ambient engineering signals
  (git commits, container runs, AI-agent activity, window and idle state) plus
  plain-language input and a native MCP + REST layer, turned into billable hours
  and draft invoices (lexoffice, SevDesk, QuickBooks, CSV). In development,
  waitlist open. https://tardis.sh

Working method: a near-autonomous "software factory" — a standing crew of Claude Code
agents building, fixing, researching, and reviewing across four codebases in parallel,
isolated in git worktrees, gated through independent review, with tiered models
(orchestrators think, cheap workers execute). Reference points: 260.7M tokens moved in
one coordinated wave session; a Flutter app built end-to-end in 72 hours unattended;
5+ agents per repo in parallel.

## Services

- **Technical co-founder** — equity partnership for the zero-to-PMF sprint. One slot per year.
- **Interim CTO** — hands-on engagements, 3–12 months. Remote, Berlin, or Lagos.
- **Technical due diligence** — for investors and acquirers: codebase, architecture, and
  team assessment. Domains: Crypto, FinTech, HealthTech, AI/ML, EdTech, PropTech.
  In partnership with Philipps & Byrne.
- **Coaching & sparring** — see below.

## Coaching & sparring (https://hagenhuebel.de/coaching)

Two tracks:

- **Track A — Sparring for founders, CTOs & technical co-founders**: technical
  architecture across many stacks, the operating model for running AI agents in
  production, and the non-technical founder calls — co-founder friction, equity,
  fundraising, the investor lens.
- **Track B — Master agentic coding**: Claude Code for real repos, self-hosting
  open-source LLMs (GLM, Gemma, Qwen), spec-driven agentic pipelines, agentic PR
  review, multi-agent patterns, cost/privacy/GDPR.

Formats and pricing (2026):

| Format | Price | Scope |
|---|---|---|
| Power Hour | €290 / 60 min | One call, one concrete problem, recording included |
| 6-Week Sparring | €4,900 | Six weekly 75-min sessions + async Slack + written playbook |
| Solopreneur Workshop | €800 half-day · €1,500 full day | 1:1, hands-on, in your own codebase |
| Company Workshop | €2,800 half-day · €4,500 full day | Onsite or remote, up to 12 engineers |

Sessions in English or German. Free 20-minute intake call. Refund policy for the
6-week program: pro-rata refund after session 1 if it's the wrong fit.

## Expertise

- AI: agentic coding, Claude Code, AI agents in production, self-hosted open-source
  LLMs (GLM, Gemma, Qwen, vLLM, Ollama), RAG
- Languages & stacks: Go, Python, Node.js, TypeScript, PHP, Flutter, React Native
- Data: PostgreSQL, PostGIS, pgvector, vector databases such as Qdrant
- Domains: FinTech, blockchain & asset tokenization (eWpG security tokens, smart
  contracts in Solidity), PropTech, EdTech, location intelligence

## Contact

- Email: hhuebel@itinance.com
- Video call (free 20-min intake): https://calendly.com/hagen-huebel/video-call
- LinkedIn: https://linkedin.com/in/hagenhuebel
- GitHub: https://github.com/itinance
- Medium: https://medium.com/@0xhagen
- CV (PDF): https://hagenhuebel.de/docs/Hagen-Huebel-CV-EN-2026-03.pdf