Software Engineer, Mobile

We’re building an AI agent to help families support their aging parents ( origin story here ).

Over 40M “sandwich generation” Americans currently manage their parent’s affairs. Keeping mom/dad safe and supported is like a second job: it’s time-consuming, stressful and on top of their already busy lives. We believe that managing our parents’ affairs should feel under control, easier and lower stress.

Co-founded by serial entrepreneur partners including Ted Zagat, who sold his previous businesses to Slack ( announcement here ) and Google (Zagat restaurant guides).

This position is core to how families experience Mantle. Caring for an aging parent happens in the gaps of a busy day: in the car, between meetings, in a waiting room. As a Software Engineer on our mobile team, you'll build the Mantle app that families keep in their pocket, making it feel calm, fast and under control.

You'll own our mobile experience end-to-end, from architecture to App Store, work directly with founders and design on product direction, and bring our AI agent to life on the phone. This means sweating the details: notifications that inform without overwhelming, flows that work for every member of the family, and an app that's dependable when it matters.

Consumer mobile application: onboarding, messaging with our AI agent, family dashboards, and the core workflows families use every day

AI agent experiences on mobile that make powerful capabilities feel intuitive and trustworthy

Notification and messaging systems that keep families informed at the right moments

Mobile architecture, release process and quality standards that let us ship fast without breaking trust

Secure handling of sensitive personal and financial information on device

Instrumentation and monitoring to understand how families use the app and where it can improve

Early-stage startup experience (especially as a first-10 engineer or first mobile engineer)

Experience building consumer mobile apps where UX, performance and reliability matter

Experience building conversational or AI-powered mobile experiences

Understanding of product development and user-centric design, including accessibility

Nice to have, but not required: experience with FinTech

Builders: You love creating things from scratch and taking full ownership

Craft-obsessed: You notice the details that make an app feel great

Product-minded: You think about user impact, not just technical elegance

AI-forward: You embrace modern AI development tools (Cursor, Claude Code, etc.) to move faster and build better

Pragmatic: You balance perfection with speed and know when to ship

Autonomous: You thrive with minimal direction and maximum responsibility

Mission-driven: You care about building something meaningful

Meaningful work: Build a consumer product that will improve the lives of millions of families, with real technical ownership, fast pace, and huge financial potential

Small team impact: Work directly with founders and see immediate impact from your work

Early team equity: Meaningful ownership in a company targeting a massive market

Shape the future: You will own our mobile experience; your decisions will shape how families experience Mantle every day

Learning & growth: Exposure to every aspect of building a startup from the ground up

Remote Fridays: Work from home every Friday. Monday through Thursday, we build together in person in San Francisco