Fractional CFO.
AI Sparring Partner.

I help founders and finance leaders build and run finance operations: reliable data, efficient processes, an effective tech stack. Now with AI woven in where it actually works.

Finance Ops & FP&AAI in FinanceCoaching & Sparring30-500 Employees

What I Do

Fractional CFO

20+ years in finance - 8 in public accounting, 13 leading finance teams in tech companies.

Setting up and optimizing finance operations - accounting, BI/FP&A, tax, treasury
Coaching finance leaders to build stronger teams and tighter processes
Getting your numbers investor-ready - due diligence, data rooms, reporting
Working with tech companies, 30-500 employees - SaaS, web3, payments, e-commerce

AI Sparring Partner

700+ hours building with AI tools - and counting.

8 hours a day with AI - using it myself and coaching others to use it well
Deploying AI in daily finance operations - real workflows, not demos
Leading the AI Builders Group at Finance Collective DACH
U.S. CPAScaled 150 → 350 employeesBig 4 background6 years in the U.S.DACH + international

Trusted by the CFO Community

AI Builders Group · Moderator

Finance Collective DACH

FCD is a community of hundreds of CFOs from the DACH region.

Thomas moderates the AI Builders Group.

Simone Rüschenberg
Simone Rüschenberg
Founder, Finance Collective DACH
Ex-Gorillas, HelloFresh, Soundcloud
GorillasHelloFreshSoundCloud

"I've stopped scrolling LinkedIn for AI-in-finance advice. Thomas is the person I call and he's the one our whole CFO community trusts.

He gets finance, he gets the tech, and he knows how to bridge the two for people who aren't developers. Fast, hands-on, no fluff. Just stuff that actually works."

Companies I've Worked For

eyeo GmbH

eyeo GmbH, Köln (DE)

2020–2025

VP Finance

Scaled finance from basic admin to a fully developed department across 7 countries.

AdTech / SaaS

industry

350

employees

€100m

revenue

Share&Charge Foundation

Share&Charge Foundation, Zug (CH)

2017–2020

Co-Founder & CFO

Co-founded and grew company. Euro stablecoin infrastructure and ICO preparation.

Web3 / Crypto

industry

15

employees

€1m

revenue

Co-Founded

from scratch

cleverbridge AG

cleverbridge AG, Köln (DE)

2012–2016

Director Finance & Tax

Built consolidation and BI from scratch. Made finance function IPO/PE ready.

E-commerce / SaaS

industry

300

employees

€50m

revenue

€500m

GMV

Rödl & Partner USA

Rödl & Partner USA, Atlanta (US)

2008–2010

Senior Manager · Audit & Tax

U.S.–Germany cross-border consulting. IFRS, US GAAP, and German GAAP conversions.

30

clients

700

legal entity consolidation

Ernst & Young

Ernst & Young, Köln (DE)

2006–2007

Senior Consultant · Tax Accounting

Tax accounting for international corporations. SEC reporting and compliance.

Big 4

firm

SEC

reporting

Rödl & Partner USA

Rödl & Partner USA, Atlanta (US)

2003–2005

Junior Consultant · Audit & Tax

Started career in U.S.–German cross-border audit and tax consulting.

U.S.–DE

cross-border

Want the full picture?

Experience, past roles, tools, and completed projects - all in one deck.

Pitch Deck Preview

Fractional CFO & AI Sparring Partner

May 2026 · 14 slides

Inside the deck: 20+ years in finance across SaaS, e-commerce, payments and web3; finance leadership at eyeo, cleverbridge and Share&Charge; the tools and AI workflows I use day to day; and selected projects with results.

Situations where I typically help

01
You Want to Apply AI in Finance
You know AI matters but don't know where to start or what actually works with real finance data.
AI Power Hour sessions + implementation on real data.
02
Sudden Leadership Gap
Your senior finance person left - but tax authorities, investors, and banks still expect accurate numbers.
I ensure the Head of Finance / VP Finance / CFO role is covered while you hire permanently.
03
No Senior Finance Sparring Partner
You need someone to bounce ideas off - scaling your team, upgrading the tech stack, preparing for the next round.
Weekly or bi-weekly sparring calls. Strategic advice without the full-time cost.
04
Lack of Actionable Insights
Your tax firm sends DATEV reports that don't help run the business. No KPIs, no dashboards, flying blind.
I support building FP&A, BI, and investor reporting from scratch.

Projects & Achievements

1 → 20 EEs

Finance Team Leadership

1 → 20 EEs
  • Set up finance teams from scratch
  • Led remote teams across 7 countries
  • Hired 50+ finance professionals
  • Startup to Series C
30d → 6d

Accounting

30d → 6d
  • Reduced reporting cycle from 30 to 6 days
  • Set up LucaNet from scratch twice
  • Consolidated under German GAAP, US GAAP, and IFRS
  • Zero audit findings in Big 4 audits
0 → 1

FP&A, BI & Reporting

0 → 1
  • Built tech stacks, data warehouses, BI systems
  • Set up reporting systems, budgeting from scratch
  • Many times
200 countries

Tax & Compliance

200 countries
  • Ensured sales tax/VAT compliance in 200+ countries at EUR 500m revenue
  • Ran payroll across 30+ countries
  • Filed tax return for 700 legal entities

What I don't do

Transparency builds trust. Here's where I'm not the right fit.

×
Fundraising pitch decks - The narrative should be yours.
×
M&A lead advisory - I support with data rooms and due diligence, but don't run the process.
×
Debt financing - Limited experience. I'll tell you upfront.
×
Short-term budgeting - Requires deep business understanding that takes time to build.

Tools I Work With

Software and platforms I've implemented, managed, or used extensively.

AI & Automation

Anthropic
Anthropic
OpenAI
OpenAI
Google AI Studio
Google AI Studio
N8N
N8N
Lovable
Lovable

Finance & Accounting

DATEV
DATEV
Lexware
Lexware
Xero
Xero
QuickBooks
QuickBooks
SAP
SAP
LucaNet
LucaNet

BI & Analytics

Power BI
Power BI
BOARD
BOARD
Mixpanel
Mixpanel

Finance Ops

Circula
Circula
CANDIS
CANDIS
Spendesk
Spendesk
AGICAP
AGICAP
Stripe
Stripe
Avalara
Avalara
Harvest
Harvest

Productivity & HR

Google Workspace
Google Workspace
Jira
Jira
Trello
Trello
Confluence
Confluence
GitHub
GitHub
Personio
Personio
Peakon
Peakon
Leapsome
Leapsome
Greenhouse
Greenhouse
Anyone can learn the software. The value is integrating these tools into real finance workflows.

Want to talk?

Running finance at a tech company with 30–500 employees? Let's talk about what's slowing you down.

Connect on LinkedIn

I also run AI Power Hour sessions for finance leaders who want to skip the hype and implement AI that actually works.

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