• Own critical parts of our Contacts stack end-to-end, from technical design to rollout and ongoing reliability. • Guide the evolution from early-stage architecture to a scalable, well-instrumented, multi-tenant system that other teams can safely build on. • Lead big, cross-cutting “0–1 to 1–100” initiatives in partnership with Product, Design, and other Engineering teams • Raise the technical bar for the team through mentoring, eng leadership, and high-quality execution. • Design and evolve services and data models for contacts and relationships that can support new workflows and downstream consumers. • Drive decisions around our APIs, eventing, and data flows to keep Contacts a reliable system of record. • Own complex, high-impact projects (e.g., new ingestion pipelines, enrichment features, or contact-centric workflows) from technical discovery through launch and iterative improvement. • Break down ambiguous problem spaces into clear milestones and incremental, ship-as-you-go plans. • Provide technical leadership across squads and workstreams, helping teams make good tradeoffs on performance, reliability, and complexity. • Mentor senior and mid-level engineers, review design docs and PRs, and codify best practices in testing, observability, and production readiness. • Collaborate with PMs and designers to translate customer problems into pragmatic solutions, especially for solopreneurs and small teams adopting CRM for the first time. • Help define MVP scopes, instrumentation, and learning loops so we can move fast without compromising trust or data quality. • Define and improve SLOs, error budgets, and operational playbooks for Contacts services. • Participate in on-call, guide incident response, and drive durable corrective actions that reduce repeat issues.