Software Engineer II (Backend & Systems)Lunadiabetes • San Diego, California, United States
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Software Engineer II (Backend & Systems)
Lunadiabetes
- San Diego, California, United States
- San Diego, California, United States
Über
Our product combines next‑generation hardware with intelligent software to automate insulin delivery and improve patient outcomes.
The Role We are seeking a Software Engineer II to support development of backend services, system integrations, and data flows across our platform.
This role operates at the intersection of:
cloud/backend services
connected medical devices (Bluetooth)
mobile applications (iOS)
You will contribute to integrations and system functionality that directly support core product experiences and real‑world device interactions.
This is a hybrid role and you must live within a reasonable commuting distance of the Luna Health office in San Diego, CA.
Applicants must be authorized to work for any employer in the U.S. We are unable to sponsor or take over sponsorship of an employment visa at this time.
What You’ll Do Backend & Integration Development
Build and maintain backend services and APIs supporting product functionality
Contribute to integrations across:
mobile applications
backend systems
Bluetooth‑connected devices
Design and maintain data flows for real‑time and near real‑time system interactions
Support reporting, export, and integration‑related workflows
System Reliability & Troubleshooting
Debug issues spanning mobile, backend, and device layers
Support improvements to backend reliability, scalability, and maintainability
Investigate and resolve system integration issues
Observe and investigate system behavior in real‑world scenarios
Collaboration & Delivery
Drive delivery of features across backend and system components in collaboration with cross‑functional teams
Collaborate with senior engineers on system design and architecture
Participate in code reviews and contribute to engineering best practices
Support release stabilization and issue resolution activities
What You Bring Experience
3–5 years of software engineering experience
Experience building and shipping production software systems
Technical Skills
Strong proficiency in backend development (Node.js, Python, or similar)
Experience designing and building APIs and backend services
Familiarity with:
databases and data modeling
cloud infrastructure (AWS, GCP, or similar)
Git‑based development workflows
CI/CD practices
Experience working with mobile applications or willingness to contribute to mobile codebases
System Thinking
Experience working across multiple system components
Ability to debug issues spanning:
backend services
mobile applications
device integrations
Understanding of data flow and system reliability concepts
Nice to Have
Experience with:
Bluetooth / BLE or connected devices
healthcare or regulated environments
real‑time or data‑heavy systems
integrations with external services or APIs
Ways of Working
Strong ownership mindset and accountability
Ability to work independently in a fast‑moving environment
Comfortable working in ambiguous problem spaces
Collaborative approach to working across engineering disciplines
Pragmatic approach to balancing speed, quality, and reliability
Why This Role Matters This role is critical to:
enabling reliable system integrations
improving backend scalability and reliability
supporting future product and platform growth
You will help build systems that directly impact patient experience and product safety.
Equal Opportunity Employer All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
Physical Demands The physical demands described here represent those that an employee must meet to perform the essential functions of this job successfully. Reasonable accommodations may be made to enable individuals with disabilities to perform essential functions.
Sit for extended periods of time at a keyboard and mouse
Lift and move up to 25lbs
Hearing and speaking will be required regularly
Specific vision abilities include close and distance vision, depth perception, peripheral vision, and the ability to adjust focus
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Sprachkenntnisse
- English
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