Lead Integration Engineer

Lead 3P Integration EngineerWe are looking for a lead engineer with extensive hands-on experience in architecting, building, validating, and bringing up third-party (3P) service integrations on AI-powered wearables platforms. The role focuses on leading the end-to-end integration of external partner services (music streaming, commerce, content providers) into Meta's AI wearables ecosystem using self-serve SDK/MCP connector tooling. As a lead, you will drive technical strategy, mentor junior engineers, establish best practices, and own the integration roadmap for multiple 3P partners.Required Skills & Experience:8+ years of hands-on software engineering experience with PHP/Hack and/or C++ along with iOS (Swift) and Android (Kotlin) experience3+ years in a technical lead or senior individual contributor role driving integration/platform projectsStrong problem solving, system design, and debugging skills across distributed systemsDeep understanding of RESTful Web API design, authentication mechanisms (OAuth 2.0, API keys), and request/response lifecycleProven ability to architect and scale integration frameworks that support multiple concurrent partner onboardingsExtensive Experience in 3 or more of the following areas:Architecting and building API connectors / plugins against an SDK or integration framework at scaleWorking with MCP (Model Context Protocol) or similar AI tool-calling standards and defining tool schemasIntegrating media streaming services (audio playback, content search, media URL handling, DRM)Designing and validating end-to-end integration flows (search ? action ? response) with error recoveryBuilding automated integration test frameworks and E2E validation suites with CI/CD pipelinesLeading partner API integrations across multiple external providers simultaneously (music, commerce, content)Designing error handling strategies, rate limiting, retry logic, circuit breakers, and graceful degradationDefining and enforcing quality gates (TSR/FACR or equivalent) for production-readinessLeadership & Ownership:Own the technical roadmap for 3P integration bring-up across 5+ partner connectors (Genie Music, ANT Commerce, Melon Music, LINE Music, Audible ? DAT)Drive the "self-serve playbook" initiative — establish repeatable processes that reduce per-connector bring-up from weeks to daysMentor and guide other CWs/engineers on integration patterns, code quality, and debugging approachesCoordinate with AI Extensibility engineering leads for architecture reviews, code reviews, and quality gatesProvide technical input on partner API feasibility assessments and integration complexity estimatesProactively identify risks, blockers, and dependencies across concurrent integration streamsPreferred Attributes:Excellent documentation, communication, and stakeholder management skills.Experience creating and scaling repeatable integration playbooks and runbooks across multiple teams.Deep familiarity with AI/LLM tool-calling architectures (function calling, tool schemas, tool orchestration, agent frameworks).Experience with media streaming protocols, DRM, and native audio playback pipelines on embedded/mobile devices.Demonstrated ability to work autonomously, make technical decisions, and drive projects to completion with minimal oversight.Experience with Phabricator-based code review workflows and Meta's development practices.Familiarity with Meta's wearables platform & Ray-Ban Meta smart glasses.Track record of improving team velocity and engineering processes.Passion for building scalable, repeatable integration patterns that compound over time.Experience in using AI-powered productivity and development tools.