Principal/Architect Software Engineer

Tonal • San Francisco, CA

1d

About The Position

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.

Requirements

• Led architecture and delivery across multiple teams at Senior Staff or Principal scope, with measurable results.
• Deep backend, distributed systems, and cloud expertise.
• Reason well across device, mobile, data, and service boundaries.
• Still build and operate production software.
• Owned hard integrations or migrations and made pragmatic tradeoffs between speed, reliability, security, cost, and maintainability.
• Turn ambiguity into focused plans and get alignment from technical and nontechnical partners.
• Made other senior engineers stronger technical leaders and can show how your work improved teams beyond your own.

Nice To Haves

• Connected devices, consumer subscriptions, fitness, or digital health.
• Healthcare integrations and sensitive-data systems.
• AI in production products or engineering workflows, with clear quality, delivery, or cost gains.

Responsibilities

• 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 AI-assisted engineering tools where they improve delivery or quality.
• Partner with Data Science, AI, and platform owners on production integrations.

Benefits

• Unique and varied lived experiences of our teammates contribute to our overall strength.
• We don’t just appreciate differences, we celebrate them, and we always seek people that represent a wide variety of backgrounds.
• Dedicated to adding new perspectives to the team and designing employee experiences that contribute to your growth as much as you do to ours.
• Commitment to meeting the diverse needs of people with disabilities in a timely manner that is consistent with the principles of independence, dignity, integration, and equality of opportunity.
• Confidential email for accommodation requests: [email protected].

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed