I turn engineering
into a competitive
advantage.

I align product, engineering, and commercial so your team ships what actually grows revenue.

Book a Discovery Call

Hey, I'm Chris. Let's work together.

Based in Frankfurt · available worldwide & in-person

How we work together

From assessment to
autonomous team.

A structured path from clarity to independence. Most engagements start with a 2-week assessment.

Start here

Assess & Align

— You need clarity on where you stand and what to fix first.

I start with a deep dive into your tech, product, and commercial alignment. That includes your AI readiness: where AI creates real business value, where your team can ship faster with AI tooling, and where the hype doesn't match your reality. You get a clear report: what's working, what's broken, and what to fix first. 2 weeks, one deliverable.

Clear report in 2 weeks

Core engagement

Embed & Build

— Your team ships, but tech isn't driving revenue yet.

I embed part-time as your fractional CTO. I align engineering with product and commercial so tech becomes a revenue driver. Process, architecture, AI-native workflows. I enable your team to build with AI — from agentic development tooling to production AI features. Your team starts owning outcomes — not just tickets.

Team owns outcomes within 90 days

Then, either

Transition

Coach & Transition

— A junior tech lead who needs to grow into the role.

I tag along with junior leaders to get them standing on their own feet. Coaching, sparring, making sure things stay stable while they grow. The goal is that you don't need me anymore.

Independent team, clean handoff

Standalone

Due Diligence

— Evaluating an investment, acquisition, or technical initiative.

I uncover technical risks and make them tangible and manageable. Architecture, infrastructure, team capability, technical debt. You get an honest assessment and clear recommendations. For M&A, PE, and funding rounds.

Risk made tangible, decisions made clear

About

The Short Version

BSc and MSc in Computer Science with a focus on theoretical CS and machine learning. I've been building software for 20 years and leading engineering teams for the last 10 as CTO, founder, and co-founder.

My background is hardcore engineering. SaaS, fintech, AI, information security. I'm still highly technical. I can read your codebase, evaluate your architecture, and have real conversations with your engineers. But my value is in the decisions, not the pull requests.

Product, commercial, engineering. These can't operate in silos. I connect them. The result is tech that reduces churn, increases revenue, and gives the business a competitive edge.

I'm currently deep in AI-native development — building with Claude API, designing agentic workflows, implementing AI automations, and enabling engineering teams to ship faster with AI tooling. Not the hype version. The version where your team actually ships AI features into production and uses AI-assisted workflows to move faster every day.

Based in Frankfurt. Working with startups and scale-ups worldwide.

Background

Where I've Been

2025–now

Fractional CTO

thefractionalcto.io · Worldwide

Building with Claude API, agentic frameworks, AI automation tooling, and enabling teams to adopt AI-native development workflows.

2019–2025

CTO & Co-Founder

Digital Office 24 GmbH · SaaS / Fintech

2016–2019

CTO

Aivy · AI / Recommendations

2014–2015

Fullstack Developer → CTO

feelyt · AI / Data Science

Education

MSc & BSc Computer Science

Theoretical CS & Machine Learning

Selected Projects

Recent Work

ESG Startup

ESG / Fintech · Fractional CTO · Post-M&A

Came in after an acquisition. Product, engineering, and commercial were pulling in different directions. The head of product was firefighting instead of doing product work. I aligned the teams, built confidence across engineering, sales, and C-level. Now the team owns outcomes and ships what grows revenue.

Digital Office 24

SaaS / Fintech · CTO & Co-Founder · 6+ years

Built a scalable multi-tenant SaaS platform including banking for personal and corporate finance. Led tech, security, IT, AI, and product.

2markdown

Developer Tools · Founder · Built & sold

Built a service that enabled GenAI to read any website by making content machine-readable. Got copied by a YC startup. Still made a small exit.

Also building bookcall.io and kaion.ventures.

“

Christian was our CTO and co-founder. He built scalable technical systems and developed our engineering team with equal attention to both. Pragmatic in approach, clear in communication, focused on quality.

Dr. Alexander Krieger Co-Founder, Digital Office 24

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