Staff Software Engineer
Software Engineering
Los Angeles, CA, USA
USD 150k-225k / year + Equity
About Circadia Health
Circadia Health is a growth-stage healthcare AI company on a mission to prevent avoidable hospitalizations and transform senior-care operations. Our Circadia Intelligence Platform combines:
Contactless sensing that monitors respiration and motion with medical-grade accuracy
Native predictive models that detect 85% of preventable adverse events several days in advance
Enterprise integrations that operationalize predictions directly inside EHR, care-coordination, billing, and compliance workflows
Today, our technology touches 40,000+ post-acute patients daily across skilled-nursing, home-health, and home-care networks. We are backed by leading healthcare and AI investors and headquartered in El Segundo, CA.
The Role
What You'll Do
- Build, develop, and maintain responsive, interactive user interfaces using modern JavaScript frameworks (React, Vue.js, Angular).
- Implement state management and develop reusable UI components for seamless integration with backend services.
- Optimize frontend performance using techniques like lazy loading, code splitting, and caching.
- Ensure cross-browser compatibility and adherence to WCAG guidelines for accessibility.
- Design, develop, and maintain RESTful APIs using Python (FastAPI) to support healthcare applications.
- Collaborate with frontend and mobile developers to integrate APIs effectively.
- Ensure APIs are secure, scalable, and performant to handle increasing loads.
- Build scalable applications using AWS services (Cognito, Pinpoint, IoT, MSK).
- Expand and manage services under AWS modules while implementing robust authentication protocols.
- Navigate Docker deployments to scale containerized applications efficiently.
- Write unit tests and integration tests using PyTest to ensure code quality and reliability.
- Conduct code reviews and implement best practices for high coding standards.
- Manage patient data efficiently using databases (MySQL, PostgreSQL, MongoDB).
- Optimize database queries for performance and scalability while ensuring data integrity.
- Implement and maintain security measures to protect sensitive healthcare data.
- Ensure compliance with healthcare regulations, including HIPAA.
- Regularly update and patch API endpoints to address vulnerabilities.
- Create and maintain comprehensive documentation for APIs, workflows, and best practices.
- Maintain detailed change logs, version histories, and onboarding guides.
- Designed backend systems supporting 50K–500K+ users or devices
- Built scalable ingestion pipelines for high-frequency time-series data
- Led EHR or healthcare integrations (HL7/FHIR) in production
- Reduced infrastructure costs while improving system reliability
- Designed multi-region failover or high-availability architectures
- Improved CI/CD velocity and reduced incident frequency materially
- You think in systems and failure modes
- You proactively eliminate technical debt before it compounds
- You enjoy designing durable infrastructure more than flashy UI
- You hold high standards and elevate those around you
- You take pride in building systems that “just work” at scale
What “Great” Looks Like (Example Profile)
You’ll Thrive Here If…
Must-Have Qualifications
Advanced knowledge of Python and related frameworks (FastAPI, NumPy, Pandas, Pydantic) including multithreading and parallel design principles
Expertise in JavaScript and frameworks such as ReactJS, with solid frontend experience
Strong understanding of RESTful API design principles, best practices, and HTTP(S) as a protocol
Understanding of AWS, including knowledge of Cognito, Pinpoint, IoT, MSK and other services, with hands-on containerized deployments via Docker
Experience with relational and NoSQL databases (MySQL, PostgreSQL, MongoDB)
Experience with TDD and testing frameworks such as PyTest
Deep understanding of user-centered design principles, design thinking methodologies, and usability best practices
Understanding of security best practices and compliance in regulated environments
2+ years tenure in most recent roles
Top education and top schools/companies
Nice-to-Haves
Proficiency in C++ and TypeScript
Experience with Qt preferred but not required
Experience with Google APIs is preferred
Experience with AWS-specific services: Cognito, IoT, Pinpoint, Kafka/MSK
Familiarity with HIPAA compliance and healthcare application development
Experience with CI/CD tooling: Jenkins, CircleCI, Prometheus, Grafana
Background in regulated industries (healthcare, life sciences, medical devices)
Design Acumen: Deep understanding of user-centered design principles, visual hierarchy, and interaction design fundamentals; proficiency in translating complex healthcare workflows into intuitive, user-friendly interfaces
Detail-Oriented: Ability to maintain high levels of accuracy and attention to detail, particularly when developing APIs that handle sensitive healthcare data
Communication and Trust: Exceptional communication skills with the ability to collaborate effectively across teams and maintain the highest levels of confidentiality
Organization and Efficiency: Capable of managing multiple projects and timelines simultaneously with a keen eye for detail
Growth Mindset: Ability to learn from mistakes, demonstrate curiosity and resilience in the face of setbacks, and constantly seek to improve and grow
Technologies and Tools:
- Programming Languages: Python, Javascript, C++ (Optional)
- Frameworks: FastAPI, NumPy, Pandas, Pydantic, ReactJS
- Databases: MySQL, PostgreSQL, MongoDB
- Testing: PyTest
- Version Control: Git
- CI/CD: Jenkins, CircleCI
- Documentation: Confluence, Markdown
- Monitoring: Prometheus, Grafana
150000 - 225000 USD a year
As a full-time Software Engineer, you will be employed by Circadia Health, Inc. The anticipated annual base salary range for this full-time position is $150,000 - $225,000. The base range is determined by role and level, and placement within the range will depend on a number of job-related factors, including but not limited to your skills, qualifications, experience, and location.
Annual salary is only one part of an employee's total compensation package at Circadia Health. We also offer:
- Meaningful employee stock options
- 100% company-paid medical, dental, and vision coverage
- 401(k)
- Competitive time off with pay policies including vacation, sick days, and company holidays
- Impact: your work will influence care decisions for tens of thousands of seniors every day.
- Culture: hard-working, mission-driven, and collaborative — with weekly and monthly social events like yoga, beach bonfires, and Wednesday/Friday team lunches.