Cairns Health · 10 hours ago
Senior QA Engineer
Sunnyvale, CA
Full-time
Onsite
Senior Level
5+ years expCairns Health is looking for a full-time Senior QA Engineer to own quality across Luna, their AI-powered digital health companion. The role involves designing and executing testing strategies, ensuring new features ship with confidence, and working closely with engineering, product, and clinical teams to define quality standards.
Family & CareConsumer GoodsHealthcareConsumer ElectronicsElder CareHealth CareHome Health Care
Responsibilities
Design, implement, and maintain QA processes for web, backend, and AI-driven systems
Build and execute test plans covering functional, regression, integration, and edge-case scenarios
Develop automated tests and testing frameworks where appropriate; know when manual testing is the right call
Report on test results regularly with statistical significance
Validate AI behavior, including correctness, safety, tone consistency, and failure handling
Partner with engineers early in the development lifecycle to prevent defects, not just catch them
Reproduce, document, and track bugs with clear, actionable steps and severity assessments
Participate in release planning, go/no-go decisions, and post-release quality reviews
Continuously improve QA tooling, coverage, and processes in a fast-moving startup environment
Qualification
Required
5+ years of experience in QA, test engineering, or software quality roles
Professional (non academic or internship) startup experience mandatory
Strong understanding of software testing methodologies, test case design, and defect lifecycle management
Experience testing modern web applications, APIs, and backend services
Comfort working with automated testing tools (e.g., Playwright, Cypress, Selenium, Postman, pytest, or similar)
Ability to think adversarially: you instinctively look for how systems break
Data-driven mindset that tracks results over time and can quantify progress
Clear communicator who can advocate for quality without blocking progress
Experience or strong interest in testing AI/ML systems, conversational interfaces, or probabilistic outputs
Comfortable working independently in a low-process, high-ownership startup setting
Positive, can-do attitude
Preferred
Bonus: experience in healthcare, regulated environments, or safety-critical systems
Benefits
Comprehensive benefits package including medical, dental, vision, paid time off, and a 401(k) plan.
Company
Cairns Health
Cairns Health is a digital care companion for senior living and home care, integrating ambient sensing, AI, and LLMs to empower patients.
11-50 employees
Funding
Current Stage
Early StageTotal Funding
$5.32MKey Investors
Lightspeed Venture PartnersY Combinator
2017-10-06Seed· $5.2M
2017-08-21Pre Seed· $0.12M
Leadership Team
Andrew Ritter
Chief Executive Officer
Saurabh Gupta
Chief Executive Officer
Recent News
Los Angeles Business Journal
2025-11-11
Company data provided by crunchbase