Built by founders.
For founders.
We've scaled companies. We've raised funding. We know what you need because we've been there. No legacy systems, no corporate bureaucracy—just modern solutions that actually work.
What makes us different
What Makes Us Different
Four key principles that define how we work with modern, growth-oriented companies.
Slack, Not Fax
We work in your tools — Slack, Google Drive, Stripe, Qonto. No portals, no phone tag.
We Speak Startup
10 companies founded, €100M raised. We don't need you to explain your cap table.
Software, Not Spreadsheets
Live P&L and API. Your numbers are always up to date and accessible.
Fixed Price, No Surprises
Predictable monthly fees without invoice shocks.
How APX Helps You Grow
As a growth company, you need admin processes that work seamlessly in the background while you focus on what matters most: building your product and growing your business.
Investor Ready
Professional financial reports and clean data rooms — ready when your investors are. From monthly reporting to due diligence, we make you look buttoned up.
Compliance Without the Drag
German tax law is complex. We handle it so you don't have to think about it. Stay compliant without slowing down.
Scales With You
From 5 employees to 500 — our systems and team grow with you. No re-onboarding, no switching providers at the next stage.
Built for Modern Companies with Modern Workflows
We integrate seamlessly with the tools you already use and love.
Communication
We adapt to your preferred communication channels
File Exchange
We work in the cloud you prefer, not ours
FinTech Integration
We connect directly to your FinTech stack
"We've been through the chaos of scaling to 200 employees, managing Series A cash flow, preparing for due diligence, and everything in between. When we work with you, you get that battle-tested experience applied to your challenges."
— APX Founding Team
The team
Meet Our Founders
Our team combines deep expertise in finance, technology, and entrepreneurship
Dr. Udo Bork
Tax Advisory
Dr. Udo Bork is a certified auditor and tax advisor with 20+ years in corporate tax consulting. He specializes in helping startups and growth companies navigate complex tax regulations while optimizing their financial structure.
Niels Denefleh
CFO-Advisory and Operations
Niels Denefleh is a former CFO at multiple startups and VC funds. He specializes in scaling financial operations and has led fundraising, M&A transactions, and international expansion.
Eduard Bart
Accounting
Eduard Bart is a certified Bilanzbuchhalter with 20+ years managing accounting for startups and tech companies. He is an expert in DATEV and modern FinTech integrations, with advanced knowledge of Stripe, Pleo, Qonto, and Moss.
Oliver Stollmann
Technology
Oliver Stollmann is a serial tech entrepreneur and former CEO of the VC-funded deep-tech startup Actyx. He is an expert in scaling technology organizations with deep experience in venture funding and growth.
Ready for a Different Approach?
Experience what it's like to work with a service provider that truly understands modern business.