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

Forward Deployed Engineer - Spanish

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