{"schemaVersion":"jobsearcher.job.v1","id":"ae2113f9fee8fce1aff41f0b","url":"https://jobsearcher.com/jobs/ae2113f9fee8fce1aff41f0b","canonicalUrl":"https://jobsearcher.com/jobs/ae2113f9fee8fce1aff41f0b","title":"Software Engineer, Full Stack","description":"About Mantle\r\nWe’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).The Role\r\nThis position is core to our product and company culture. As Founding Software Engineer, you'll architect and build our consumer-facing platform from the ground up. Your job is to create exceptional web experiences that customers love, while integrating AI agents that handle complex family tasks automatically. You'll own significant parts of our technical infrastructure, work directly with founders on product direction, and make architectural decisions that will scale with millions of users.What You'll BuildConsumer-facing web/mobile application: onboarding flows, user dashboards, account management, and all the core web functionality families interact with dailyAI agent experiences that integrate seamlessly into the web product, making powerful capabilities feel intuitive and trustworthyRobust, scalable infrastructure on AWS supporting both traditional web features and AI workloadsPayment flows, data visualizations, notification systems, and real-time user interfacesIntegration layers connecting AI models, third-party services, and internal systems into cohesive user experiencesInternal tools and admin interfaces to support operations and customer successData pipelines and monitoring systems to track product performance and improve the agent over timeWhat We're Looking For\r\nRequired Experience2-10 years building production full stack web applications with modern technologiesStrong proficiency in React and Node.js, with demonstrated ability to architect scalable systemsExperience deploying and maintaining applications on AWS (ECS, Lambda, RDS, S3, etc.)Track record of shipping consumer products end-to-end, from concept to productionIdeal BackgroundEarly-stage startup experience (especially as a first-10 engineer)Experience building consumer web applications where UX, performance, and reliability matterBackground building features across the full product spectrum - from landing pages to complex interactive workflowsUnderstanding of product development and user-centric designComfortable working with AI/ML APIs and integrating LLMs into product experiencesNice to have, but not required: experience with FinTechWho Thrives HereBuilders:You love creating things from scratch and taking full ownershipProduct-minded:You think about user impact, not just technical eleganceAI-forward:You embrace modern AI development tools (Cursor, Claude Code, etc.) to move faster and build betterPragmatic:You balance perfection with speed and know when to shipAutonomous:You thrive with minimal direction and maximum responsibilityMission-driven:You care about building something meaningfulWhat You'll GetMeaningful work : Build a consumer product that will improve the lives of millions of families, with real technical ownership, fast pace, and huge financial potentialSmall team impact : Work directly with founders and see immediate impact from your workFounding team equity : Significant ownership in a company targeting a massive marketShape the future : You will own all things data science; your decisions will shape our product, business and cultureLearning & growth : Exposure to every aspect of building a startup from the ground upRemote Fridays:Work from home every Friday. Monday through Thursday, we build together in person in San Francisco#J-18808-Ljbffr","company":"Mantle","rawCompany":"mantle","city":"Millbrae","state":"CA","isRemote":false,"isActive":false,"createdAt":"2026-11-04T02:30:35.298Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Software Engineer, Full Stack","description":"About Mantle\r\nWe’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).The Role\r\nThis position is core to our product and company culture. As Founding Software Engineer, you'll architect and build our consumer-facing platform from the ground up. Your job is to create exceptional web experiences that customers love, while integrating AI agents that handle complex family tasks automatically. You'll own significant parts of our technical infrastructure, work directly with founders on product direction, and make architectural decisions that will scale with millions of users.What You'll BuildConsumer-facing web/mobile application: onboarding flows, user dashboards, account management, and all the core web functionality families interact with dailyAI agent experiences that integrate seamlessly into the web product, making powerful capabilities feel intuitive and trustworthyRobust, scalable infrastructure on AWS supporting both traditional web features and AI workloadsPayment flows, data visualizations, notification systems, and real-time user interfacesIntegration layers connecting AI models, third-party services, and internal systems into cohesive user experiencesInternal tools and admin interfaces to support operations and customer successData pipelines and monitoring systems to track product performance and improve the agent over timeWhat We're Looking For\r\nRequired Experience2-10 years building production full stack web applications with modern technologiesStrong proficiency in React and Node.js, with demonstrated ability to architect scalable systemsExperience deploying and maintaining applications on AWS (ECS, Lambda, RDS, S3, etc.)Track record of shipping consumer products end-to-end, from concept to productionIdeal BackgroundEarly-stage startup experience (especially as a first-10 engineer)Experience building consumer web applications where UX, performance, and reliability matterBackground building features across the full product spectrum - from landing pages to complex interactive workflowsUnderstanding of product development and user-centric designComfortable working with AI/ML APIs and integrating LLMs into product experiencesNice to have, but not required: experience with FinTechWho Thrives HereBuilders:You love creating things from scratch and taking full ownershipProduct-minded:You think about user impact, not just technical eleganceAI-forward:You embrace modern AI development tools (Cursor, Claude Code, etc.) to move faster and build betterPragmatic:You balance perfection with speed and know when to shipAutonomous:You thrive with minimal direction and maximum responsibilityMission-driven:You care about building something meaningfulWhat You'll GetMeaningful work : Build a consumer product that will improve the lives of millions of families, with real technical ownership, fast pace, and huge financial potentialSmall team impact : Work directly with founders and see immediate impact from your workFounding team equity : Significant ownership in a company targeting a massive marketShape the future : You will own all things data science; your decisions will shape our product, business and cultureLearning & growth : Exposure to every aspect of building a startup from the ground upRemote Fridays:Work from home every Friday. Monday through Thursday, we build together in person in San Francisco#J-18808-Ljbffr","datePosted":"2026-11-04T02:30:35.298Z","dateModified":"2026-11-04T02:30:35.298Z","hiringOrganization":{"@type":"Organization","name":"Mantle","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Millbrae","addressRegion":"CA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"ae2113f9fee8fce1aff41f0b"},"url":"https://jobsearcher.com/jobs/ae2113f9fee8fce1aff41f0b"}}