Senior Product Manager, APIs

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Product Manager, APIs based in United Kingdom.

• As a Senior Product Manager, APIs, you’ll own a technical product area end to end, from product strategy and architecture to adoption and long-term customer experience.
• You’ll work as a close peer to engineering leadership and staff engineers, contributing directly to technical direction and design decisions.
• The role combines product management with hands-on technical exploration, including building prototypes and writing functional code to validate ideas and reduce uncertainty.
• You’ll own API products and integrations, ensuring strong contracts, backwards compatibility, developer experience, and reliable adoption.
• You’ll work closely with operational specialists to understand real workflows, identify root causes, and prioritize solutions that address meaningful business problems.
• This is an individual contributor role in a high-growth environment where strong judgment, ownership, experimentation, and clear written communication are highly valued.
• You’ll have the opportunity to influence products that solve complex operational challenges while working across product, engineering, payroll, tax, and business teams.