SlipstreamJobs tracks this role from the company's public career site. Apply directly on the employer's site.
Salary: GBP 70,000 - 90,000 / annual
Fyxer AI is seeking a Senior Customer Success Manager to build and lead their customer success motion from the ground up. This is a hands-on, commercially-driven role focused on turning customer relationships into revenue and support into strategic partnership.
You will own a portfolio of high-potential, high-complexity enterprise accounts, driving the full renewal cycle and identifying expansion opportunities through value-based conversations. Your responsibilities span three core areas: (1) driving retention and expansion across strategic accounts by multithreading across stakeholders and surfacing commercial opportunities; (2) building the foundations of customer success at Fyxer by developing scalable playbooks, shaping the GTM tech stack, and defining KPIs that track customer outcomes; and (3) serving as a strategic partner to Product, Sales, and Leadership by translating customer insights into product feedback and bringing a commercial lens to all decisions.
The ideal candidate has 8+ years in Customer Success or Account Management with a proven track record of owning revenue through renewals and expansion. You should have enterprise experience navigating complex organizations and long sales cycles, be commercially driven and comfortable discussing numbers and upsells, and possess a builder mindset energized by ambiguity. Excellent communication skills—particularly for executive conversations and internal stakeholder management—are essential. You should be tooling-savvy, comfortable with modern GTM platforms, and startup-ready: fast, flexible, and energized by change.
Fyxer's culture is intentional and intense, built around the conviction that every second counts in reshaping one of the largest AI opportunities in email. The company moves with speed and intensity, emphasizing autonomy, relentless self-challenge, and impact. The role is hybrid in the London office with no remote work available.
