Account Growth Manager - Upsell, Renewals & CS

Fonio; Greater London; On-site; GBP 55,000 - 80,000; Full time

Benefits offered by this job

On-site in Vienna

Top equipment & fast decision making

Collaboration with Product, Marketing

Customer success-focused environment

Job summary

Fonio, Europe’s market leader for AI phone agents, is seeking an Account Manager to own a portfolio of existing customers, drive expansion, renewals and retention from Vienna, on-site. You will ensure onboarding success and long-term satisfaction while delivering measurable impact.

You will collaborate with Product, Marketing and Customer Success to maintain a reliable pipeline and forecasts, enabling growth in a fast-scaling AI startup.

Qualifications

• At least 1 year of experience in B2B SaaS sales, account management, or customer success.
• Experience in upselling, renewals, or expansion revenue across existing customers.
• Strong product and technology understanding; AI-savvy.

Responsibilities

• Own a portfolio of existing customers with a focus on upsell and retention.
• Conduct review, discovery and upsell conversations; analyze usage and demonstrate impact.
• Manage expansion revenue including upgrades, add-ons and renewals.
• Ensure onboarding success, product adoption, and long-term satisfaction.
• Collaborate with Product, Marketing and Customer Success to maintain forecasts and pipeline.

Skills

B2B SaaS sales

Account management

Customer success

Upselling

Native-level English

Job description

Fonio, Europe’s market leader for AI phone agents, is seeking an Account Manager to own a portfolio of existing customers, drive expansion, renewals and retention from Vienna, on-site. You will ensure onboarding success and long-term satisfaction while delivering measurable impact.

You will collaborate with Product, Marketing and Customer Success to maintain a reliable pipeline and forecasts, enabling growth in a fast-scaling AI startup.