Staff Software Engineer (Full Stack)
About Onos Health
Onos Health’s mission is simple but ambitious: ensure every healthcare dollar goes toward delivering the highest quality care. Today, 30% of total U.S. healthcare spending is wasted due to ineffective care and administrative burden caused by misalignment between providers and payers.
Onos is addressing this by building the largest AI-driven healthcare data platform. Our models enables payers to make faster, more accurate decisions across their populations. By guiding members to the right care, Onos is channeling more dollars to high-quality care that drives outcomes while making healthcare more affordable.
Onos recently closed a $6M Seed round with top-tier investors and is already working with some of the nation’s largest health plans, signing its first national plan just months after launch.
Come join a category-defining company and help reimagine healthcare for the better.
Why Onos?
Meaningful impact: Help fix what is fundamentally broken in healthcare
Direct collaboration: Work alongside experienced founders with deep healthcare and data expertise
Culture: Join a high-performing, transparent, and results-oriented team
Ownership: Significant responsibility and autonomy from day one
Opportunity: Play a pivotal role in building a fast-growing, category-defining healthcare AI company
The Role
We're seeking an experienced and highly capable full-stack product engineer who is motivated to meaningfully improve the way healthcare is administered in the United States. You'll take ownership of developing a significant part of the Onos platform, such as our user-facing application and APIs. As an early team member, you'll be expected to wear multiple hats, including acting as a frontend developer, UI/UX designer, and backend developer. This role is a hybrid role based in San Francisco, where you'll be expected to work at our office in person at least once a week.
What you'll be doing at Onos:
Leading the development for our end-user web application, used by healthcare administrators and providers
Architecting and implementing major platform components to provide actionable insights and recommendations to health plan administrators and support robust workflows related to addressing fraud, waste, and abuse
Prototyping new features and use cases for demos and user feedback
Establish engineering best practices and technical foundations for future team growth and AI-enabled coding
Help shape our technical roadmap, make key architectural decisions, and influence the company's product and design strategy
Technical Challenges At Onos:
Develop a flexible and robust UI/UX that supports many types of use cases and data sources related to administrative healthcare workflows and include intelligent, actionable insights.
Implement functionality related related to machine learning pipelines that ingest complex medical standards, analyze medical records and automate recommendations for clinical reviewers
Incorporate human-centric AI user experiences, in which the UI/UX enables users to build trust with the use of AI in our products
Design and implement high quality user experience while upholding high security and privacy standards
Tech Stack:
At Onos, we work with a modern tech stack where you'll have the freedom to evaluate and adopt cutting-edge technologies as we scale.
Languages/Frameworks:
Frontend: Typescript, NextJS, Tanstack Query, Shadcn UI, Zod, Nuqs
Backend: Python, Django, django-ninja, django-tenants
Database/Storage: PostgreSQL (AWS RDS), S3
Infrastructure/Systems: AWS (ECS, Bedrock, Cognito, etc.), Docker, Github Actions
Development Tools: Github, Jira, CoderabbitAI, Tusk
What we're looking for:
5+ years professional experience building end-user web applications at product-driven companies
Proficient with web and backend technologies (e.g., React, Python) and relational databases (e.g., PostgreSQL/MySQL)
Customer obsessed and motivated to make an impact in the healthcare space
High user empathy and the ability to develop frontend UI/UX with minimal guidance
A collaborative team player with attention to detail
Bonus points if you have:
Significant experience working with healthcare data and with HIPAA best practices
Developed design systems and made frontend codebases maintainable
Played the role of an architect on major full stack software projects
Benefits and Perks
Flexible hybrid arrangement: 1-2 days/week at San Francisco office (financial district), remote-first culture
Unlimited vacation policy
Paid parental leave
Medical, dental, and vision insurance
Pre-tax commuter benefits
401(k)
Significant equity as an early employee
Ground-floor opportunity to help build a team and culture
Regular team events and offsites
Company-provided equipment and home office setup
We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.