Founding Software Engineer at Sage Care | Y Combinator

Open menuAboutWhat Happens at YC?ApplyYC Interview GuideFAQPeopleYC BlogCompaniesStartup DirectoryFounder DirectoryLaunch YCLibraryPartnersResourcesStartup SchoolNewsletterRequests for StartupsFor InvestorsVerify FoundersHacker NewsBookfaceSafeFind a Co-FounderStartup JobsLog inApplySage CareAutomating home care agency operations with AIFounding Software Engineer$125K - $250K•0.02% - 2.00%•New York, NY, US / Miami, FL, USJob typeFull-timeRoleEngineering, Full stackExperience3+ yearsVisaUS citizen/visa onlySkillsDjango, AI AgentsConnect directly with founders of the best YC-funded startups.Apply to role ›Ian GillisFounderIan GillisFounderAbout the roleAbout Sage Care
Home care agencies run on relationships — but they're drowning in paperwork. Intake coordinators spend hours manually transcribing calls, building care plans, and chasing follow-ups. That overhead slows agencies down and pulls their attention away from the people they're trying to serve.
Sage is building the operating system for home care agencies — an AI-native CRM and virtual assistant that turns every client call and home visit into structured care plans, follow-up tasks, and system records, automatically.
We integrate directly with the tools agencies already use (WellSky, AxisCare), work on iOS and desktop, and save agencies over 100 minutes per client intake.
We're early, well-funded, and signing agencies fast. Now we're looking for the engineers who'll help us build what comes next.
Role & Responsibilities
As one of Sage’s earliest engineering hires, you’ll play a crucial role in shaping our technical foundation and driving the development of our platform. Reporting directly to the CTO, you’ll have a significant impact on the company's trajectory and growth.
You will be responsible for:

Full-stack Development

Implementing agents tailored to the home care industry
Designing, developing, and maintaining our Django application and native iOS app
Implementing responsive and interactive front-end features using Datastar
Creating beautiful and accessible user interfaces with Tailwind CSS and SwiftUI

Product Development

Collaborating with the founders to define product roadmap and features
Translating business requirements into technical specifications
Conducting code reviews and maintaining high code quality standards

Technical Strategy

Evaluating and implementing new technologies to improve our stack, such as what technologies we should choose for our mobile apps
Establishing best practices for software development and documentation
Planning for future technical needs as the company grows

What we’re looking for

Comfortable defining your own scope and operating with autonomy
Experience developing agentic applications
4+ years of professional experience in full-stack web development
Proficiency with Python and/or iOS development

Nice to haves

Experience with Datastar
iOS development experience
Knowledge of Tailwind CSS and component libraries like DaisyUI, Basecoat
Experience working in a HIPAA environment
Experience in early-stage startups or as a founding engineer

Compensation/Benefits

A chance to take end to end ownership over what you build
Choice of location in New York or Miami
Competitive salary and equity
Opportunity to shape the technical direction of a growing startup

About Sage CareHome care agencies run on relationships — but they're drowning in paperwork. Intake coordinators spend hours manually transcribing calls, building care plans, and chasing follow-ups. That overhead slows agencies down and pulls their attention away from the people they're trying to serve.
Sage is building the operating system for home care agencies — an AI-native CRM and virtual assistant that turns every client call and home visit into structured care plans, follow-up tasks, and system records, automatically.
We integrate directly with the tools agencies already use (WellSky, AxisCare), work on iOS and desktop, and save agencies over 100 minutes per client intake.
We're early, well-funded, and signing agencies fast. Now we're looking for the engineers who'll help us build what comes next.
Sage CareFounded:2024Batch:S24Team Size:3Status:ActiveLocation:San Francisco  FoundersIan Gillis FounderIan Gillis FounderJon Levinson FounderJon Levinson FounderFooterY CombinatorMake something people want.ProgramsYC ProgramStartup SchoolWork at a StartupCo-Founder MatchingResourcesStartup DirectoryStartup LibraryInvestorsDemo DaySafeHacker NewsLaunch YCYC DealsCompanyYC BlogContactPressPeopleCareersPrivacy PolicyNotice at CollectionSecurityTerms of UseTwitterTwitterFacebookFacebookInstagramInstagramLinkedInLinkedInYoutubeYouTube© 2026 Y Combinator

Sage Care is developing an AI-native CRM and virtual assistant designed to address the significant administrative overhead faced by home care agencies, which traditionally struggle with manual processes like call transcription, care plan creation, and follow-up tracking. The company aims to create an operating system for these agencies that automates these tasks, turning client interactions and home visits into structured records and automatically generated system data. This platform integrates directly with existing industry tools such as WellSky and AxisCare, effectively saving agencies over one hundred minutes per client intake.

The role of the Founding Software Engineer at Sage Care involves playing a pivotal position in establishing the technical foundation and driving platform development, reporting directly to the Chief Technology Officer. Responsibilities span full-stack development, product strategy, and technical direction. Key development tasks include implementing agents tailored for the home care sector, designing and maintaining the core Django application alongside native iOS applications. Furthermore, the role requires implementing responsive front-end features using technologies like Datastar, creating accessible user interfaces with Tailwind CSS and SwiftUI, and ensuring high code quality through thorough code reviews.

The technical strategy aspect of the position demands evaluating and implementing emerging technologies to enhance the overall software stack. This involves establishing best practices for software development, ensuring robust documentation, and strategically planning for the technical needs of a rapidly growing enterprise. Candidates are sought who are comfortable operating with autonomy and who possess experience developing agentic applications, alongside proficiency in Python or iOS development, coupled with at least four years of professional full-stack web development experience. Desirable skills include familiarity with Datastar, iOS development, and knowledge of component libraries such as Tailwind CSS and DaisyUI, in addition to experience operating within a HIPAA-compliant environment or in early-stage startup settings.

The opportunity offered encompasses end-to-end ownership of the developed systems, competitive compensation including salary and equity, and the chance to influence the technical trajectory of a well-funded and rapidly expanding company. The company is founded by Ian Gillis and Jon Levinson, and it is currently part of the Y Combinator ecosystem, positioning the role at the intersection of advanced artificial intelligence, operational software, and the healthcare service industry.