About fonio 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 .

Your Role As a

Forward Deployed Engineer

for our for our Spanish market, you work directly at the intersection of product and customer setups. You capture requirements, translate them into robust implementations, and take fonio live at customers – including integrations, automations, and ongoing optimization.

You work closely with Product/Engineering and Go-to-Market, making sure deployments are fast, stable, and repeatable across the Spanish market.

What you'll do

Capture customer requirements and translate them into concrete implementation plans

Build and roll out fonio setups in production: workflows, logic, prompts, guardrails

Implement integrations with third-party systems (APIs, webhooks, CRM, calendar, ticketing, etc.)

Develop smaller features and glue code to cleanly map customer cases

Debug under production conditions: calls, flows, edge cases, fast fixes





Build reusable templates and deployment playbooks to make setups scalable

Deliver product feedback: bring pain points and feature gaps to the team, prioritized and concrete

Who we're looking for

Solid coding skills: you can implement independently, not just configure

Strong understanding of AI systems and LLMs (prompting, tool-use, RAG, failure modes)

Workflow thinking: translate complex processes into robust, testable flows

Experience with APIs, webhooks, auth, and common integration patterns

Cloud fundamentals: deployments, observability, debugging in production

Highly pragmatic working style: ship fast, make it stable, iterate

Bonus: Voice/Telephony, n8n, TypeScript/Python, SQL, monitoring/tracing, GDPR

Spanish at native or near-native level + solid English

What we offer

Competitive salary:

€60,000–€95,000

per year

100% Focus Time

(no regular meetings)

Unlimited budget

when the ROI is right

Extreme

speed

(we ship almost daily)

Thousands of enthusiastic customers building the product together with us

Hiring Process

25 min intro

30 min deep dive with CTO & Co-Founder Matthias

20 min culture fit with one of our founders

#J-18808-Ljbffr

📌 Forward Deployed Engineer - Spanish (Madrid)
🏢 fonio
📍 Madrid