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 Technical Customer Success Manager for the UK market, you are the primary point of contact for your customer cohort (of SMBs) once they've signed. You own their success, satisfaction, and retention end to end.
You actively build relationships, identify value drivers, and ensure every customer gets the most out of fonio. You'll spend most of your time in calls and meetings with customers and implementing or improving their setups.
What to expect
Own a portfolio of UK SMB customers across their full lifecycle
Build relationships, surface value, and find new use cases for AI agents to keep customers engaged




Support customers in setting up their AI assistant; implement workflows for medium complex cases and coordinate with developers for advanced setups
Run check-ins and proactive calls based on usage signals (low engagement, expansion opportunities, setup friction)
Work with a ready-made pipeline and clear playbooks, with room to test your own initiatives
Maximize the value generated from each customer in your portfolio
Spot churn risks early and act on them
Manage your activity autonomously in HubSpot
Who We're Looking For
2–5 years in Customer Success, Account Management, Forward Deployment Engineer or a technical client-facing SaaS/B2B role
Ideally a strong technical understanding — comfortable understanding API documentation and error logs to troubleshoot customer setup issues independently
Experience with tools like n8n, make.com, codex or similar
An affinity for tech / AI products is a real plus
Native or C2 English
Structured, autonomous, results-driven
You build trust easily with customers, by phone or

📌 Technical Customer Success Manager – UK Market (Barcelona)
🏢 fonio
📍 Barcelona