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Own a portfolio of B2B SaaS customers from onboarding through renewal and expansion. Develop success plans, monitor product usage and call quality, identify churn risks, manage recovery plans, grow accounts, forecast renewals, and communicate customer needs to product and engineering teams. The role is office-based in London and focuses on retaining and expanding recurring-revenue accounts.

Own and improve production real-time voice systems for an AI receptionist. Responsibilities include building LiveKit voice agents, optimizing latency, turn detection, interruptions, speech recognition and synthesis, managing SIP and telephony integrations, handling provider failures, and measuring call quality through tracing and repeatable evaluations. The role requires strong Python or TypeScript/Node.js skills, WebRTC and SIP knowledge, and experience safely shipping changes to live services.