I turn engineering
into a competitive
advantage.

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

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

Based in Frankfurt · available worldwide & in-person

Sound familiar?

Your engineers are busy but the product isn't moving. Releases slip, technical debt piles up, and nobody can explain to the board why things take so long. You're hiring but it's not helping.

The CTO-shaped hole in your org is costing you more every month you don't fill it — in runway, in speed, in the deals your sales team can't close because the product isn't ready.

How we work together

From assessment to
autonomous team.

A structured path from clarity to independence. Most engagements start with a short assessment.

Start here

Assess & Align

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

For non-technical founders, new CEOs post-acquisition, or boards evaluating a technical org.

I start with a deep dive into your tech, product, and commercial alignment. You get a clear report: what's working, what's broken, and what to fix first. 3–5 days depending on scope, one deliverable.

Clear report in a week

Starting at €3,900

Core engagement

Embed & Build

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

For funded startups with engineers shipping but no senior technical leadership tying tech to revenue.

I embed part-time as your fractional CTO. I align engineering with product and commercial so tech becomes a revenue driver. Process, architecture, modern tooling. 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.

For companies with a promising tech lead who isn't quite ready to fly solo yet.

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

Starting at €1,449/mo

Standalone

Due Diligence

— Evaluating an investment, acquisition, or technical initiative.

For investors, PE firms, and acquirers who need an honest technical assessment before writing the check.

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

Starting at €4,979

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.

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

Background

Where I've Been

2019–2025

CTO & Co-Founder

Digital Office 24 GmbH · SaaS / Fintech

2023–2024

Founder

2markdown · Developer Tools · Built & sold

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. Engineering, product, and sales were pulling in different directions. The head of product was firefighting bugs instead of doing product work. Within 90 days: developers had stable processes and fast tests, and stopped being afraid to ship. Sales had a demo they trusted. And the roadmap went from vague to a clear path from tech debt to growth.

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.

“

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

Let's figure out
what your tech needs.

A short call to talk through your technical challenges. No strings attached.

Book a Discovery Call

I turn engineering into a competitive advantage.