Principal/Architect Software Engineer

Tonal·San Francisco, CA·Remote·Posted 7 October 2026

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About the role

OVERVIEW You’ll lead architecture and delivery across Tonal’s device, app, and cloud systems: turn business priorities into technical direction, own initiatives that span teams, and grow senior engineers into technical leaders. You report to engineering leadership and stay hands-on from design through production. Success means shipped outcomes, stronger systems, and teams that move faster. WHAT YOU WILL DO - Set 6–12 month technical direction across device, app, and cloud. Turn product priorities into architecture, ownership, and delivery plans. - Lead a few cross-team initiatives from problem definition to launch and adoption. Settle tradeoffs with team leads; flag priority and resource conflicts early. - Write critical-path code, build prototypes, guide migrations, and debug hard production issues. Own how your architecture decisions play out in practice. - Simplify shared systems and interfaces. Improve reliability, observability, security, and developer workflow so teams need less coordination to ship. - Mentor senior and Staff engineers through design, pairing, and shared delivery. Set up lightweight decision practices so teams can act on their own. - Use…

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