We grew from $1M to $10M ARR in under 12 months and now serve 10,000+ customers.
Fonio is Europe’s market leader for AI phone agents for SMBs. Now we’re expanding globally and into new products.
We move fast, take ownership, give direct feedback, and avoid politics and unnecessary meetings.
Join one of Europe’s fastest-growing companies
As Head of Finance, you own the entire finance operation behind one of Europe's fastest-growing companies, across our entities in Europe and the US.
Own accounting for all entities: pre-accounting in-house, full ownership of our accounting stack, and the transition to fully in-house accounting in 2027.
Run controlling: month-end, quarterly and annual closings, revenue reporting down to the invoice line item, cost and profit center reporting.
Own tax: VAT and sales tax, employment tax and contributions, international tax, and transfer pricing between entities.
Own cash flow and treasury: planning, forecasting, cash reserves, return optimization, intercompany transfers and FX.
Roll out a lean ERP and turn everything manual in finance into workflows and AI agents.
Build and lead the finance team, starting with your first hire shortly after you join.
Work directly with both founders and the extended leadership team.
Up to €130,000 + equity package.
On-site in Vienna, relocation package if needed.
Real ownership from day one
Everything you need to be successful. If you need it, you get it.
You were part of building a finance in a fast-growing company, internationally, across different jurisdictions and accounting regulations. (ideally: VC-backed B2B SaaS/Tech)
You have run closings and accounting prep yourself, not just reviewed them.
You are experienced across controlling, tax, cash flow and treasury.
Workflows, agents and automations are your default, not the exception. Claude Code, n8n and similar tools are part of your toolkit.
Obsession with detail: small errors bother you before they bother anyone else.
Perfect German, very good English.
15 min Intro Call
15 min Intro Call with our Chief of Staff
45 min Skill Interview & Case Study Discussion
On-Site Meeting in Vienna
20 min Culture Call with the founders
fonio is building the AI communication suite for small and medium businesses; so no call goes unanswered, no lead gets lost, and no customer is left waiting.
What we do
SMBs lose business every day to missed calls and slow responses. fonio puts AI on the front line of customer communication — handling calls and messages automatically, 24/7, without adding headcount.
Our products
→ AI Phone Agent — answers, qualifies, and routes calls around the clock
→ AI WhatsApp Agent — keeps conversations moving on the channel your customers already use
9,000+ businesses across Europe run on fonio.
Why join us
We're a small team shipping fast from Vienna — building software that thousands of real businesses rely on every day. If you want your work to matter from day one and help define how AI changes SMB operations, fonio is the place.
We're seed-funded, scaling fast across Europe, and hiring across 35+ open roles: from engineering and product to sales and marketing. Come build with us.
