Principal Product Manager, 3rd Party App Integration & API/MCP

Come join Mailchimp’s Platform & API team as a Principal Product Manager, where you will define and lead the strategy for AI-powered platform capabilities, public APIs, and Model Context Protocol (MCP) experiences that enable our third-party (3P) developer ecosystem to create differentiated customer value.

In this role you will own the vision, roadmap, and execution of API externalization, developer experience, and agentic access. You will treat APIs, the developer portal, and MCP as one product system: APIs are the ingredients, the portal is the supermarket, and MCP is the cookbook, recipes an AI agent uses to turn those ingredients into customer outcomes. You will work at the intersection of AI, developer platforms, and partner integrations to grow the number of high-quality apps on Mailchimp, make Mailchimp recommendable to agents on day one, and give domain teams a federated path to ship versioned, schema-stable APIs (and MCP tools) as the default.

You will also partner with the Partnerships team, partner engineers, and Go-to-Market to land high-value third-party app integrations. That means identifying the data objects and events that matter to customers, getting them into Mailchimp in a usable form, and helping customers activate that data — to generate leads, convert, and nurture, through campaigns, journeys, segments, and automations.

Define and lead a bold, multi-year vision and strategy for Mailchimp’s public API platform, developer portal, and official MCP server as first-class surfaces for human developers and AI agents.

Own the four pillars of the developer-ecosystem strategy: Federated API Platform (supply), Best-in-Class Developer Experience (portal, SDKs, CLI, sandbox, MCP), Third-Party App Lifecycle Management (publish, discover, operate), and Trust & Governance (scopes, versioning, quality bar, key lifecycle).

Identify the right partner data objects and events and define how they map into Mailchimp audience, events, and activation surfaces so customers can generate leads, convert, and nurture.

Provide product thought leadership by identifying partner and developer needs through VOC, support-volume analysis, ecosystem feedback, competitive teardown, and agent-era research.

Translate vision into a sequenced execution roadmap with measurable outcomes aligned to Mailchimp FY27 priorities — including AI-First Platform KRs for agent-callable interfaces, context available to agents, and intent-to-execution.

Lead the developer-portal modernization (Fern / Keystone): interactive docs, nine auto-generated SDKs, developer CLI, official MCP server generated from the same OpenAPI spec, llms.txt and agent manifests on standard paths, versioned documentation, and platform status.

Establish MCP as a governed product, not a sidecar: definition of tools, serving runtime, OAuth scopes including a dedicated MCP scope, read-only defaults, auditability, certification, and a clear ownership model versus domain MCP tools.

Leverage AI to enable personalized, proactive, contextually relevant developer and agent experiences — from docs MCP that agents can query for every endpoint, to CLI and codegen that remove time-to-first-call friction.

Influence senior executive stakeholders and help evolve the operating model so domain teams can ship API and MCP parity without a centralized bottleneck.

Collaborate across Design, Engineering, AI/ML, Support, Partnerships, Security, Privacy, and Go-to-Market to deliver scalable, high-quality platform experiences and route cross-org work rather than absorbing it silently.