Ellipsis Health
Senior Backend Engineer, Infrastructure
San Francisco - Hybrid · Senior
Stay score
odds of building a lasting career here
Sponsors, but it's cap-subject — you still face the weighted lottery (~61% per draw at Level IV). Good if you win; have a cap-exempt backup on your list.
Lottery odds assume a STEM candidate.
Personalize to your clock →H-1B wage level
the lottery is wage-weighted — each level is one more entry
$18,149 more — $193,149 — moves this role to Level III and 3 lottery entries. That figure is inside the range the employer already advertised.
Based on the DOL prevailing wage for this occupation and worksite, a base salary of $193,149 would place this position at wage Level III. That figure is within the posted range, and I'd like to target it. This role classifies under "Software Developers" for prevailing-wage purposes.
DOL prevailing wage, 2026-27 wage year · Software Developers (15-1252) · San Francisco-Oakland-Fremont, CA. Wage level is derived by USCIS from the offered wage, occupation and worksite; the occupation shown is inferred from the job title.
Employer immigration record
from this employer's Department of Labor filings
Files H-1B transfers
Sourced from Department of Labor LCA, PERM and prevailing-wage disclosure data. Employer matching is by name, so figures may be split across an employer's legal entities. Absence of a filing means none appears in our copy of the data, not that none exists.
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About the role
- The team is headquartered in Silicon Valley and is funded and supported by preeminent venture capital groups and healthcare institutions.
- The typical salary range for this role is $175,000 to $250,000 USD.
- Please know that there is no set policy on rejecting candidates because of certain background check results, and that we look at a candidate as a whole before making any decisions.
Responsibilities
- Expand and maintain our real-time voice pipeline: design, implement, and
- maintain Python micro-services for conversational AI orchestration-audio
- adapters that allow hot-swapping components without downtime. Build API
- Deliver ultra-low latency (<500 ms round-trip): profile async pipelines (asyncio,
- FastAPI, gRPC), optimize buffering, concurrency, and back-pressure handling.
- LLM, and memory services; wire up WebRTC, SIP, or phone endpoints; build
- Harden for production: implement graceful retries, idempotent message
- Collaborate cross-functionally with ML, product, data engineering, and
- client-SDK teams to deliver features such as voice cloning, multimodal hand-offs,
- any applicant to which we extend an offer and to re-perform any such check at any time
Requirements
- Proven experience with real-time streaming systems-WebRTC, WebSockets,
- or gRPC streaming-and proficiency with asyncio, FastAPI, or similar async
- Familiarity with voice-agent frameworks,
- Familiarity with GPU inference and streaming pipelines.
- 4+ years building production back-ends in modern Python.
- frameworks.
- Deep understanding of concurrency, buffering, audio codecs (Opus, PCM), and
- distributed tracing.
- Solid understanding of AWS/GCP/Azure, including container orchestration
- (Kubernetes/EKS/GKE), message queues (Kafka/SQS/Pub/Sub), and IaC
- (Terraform).
- Solid grasp of relational (PostgreSQL) and in-memory (Redis) data stores
- to model and persist conversational state.
- Excellent communication skills and a bias for measured, observable, and
Compensation
- The typical salary range for this role is $175,000 to $250,000 USD.
Benefits
- We offer competitive salary and benefits, including 401k matching up to a certain
- percentage of your salary, health, vision, and dental insurance, and very flexible paid
- As a health technology company, we reserve the right to run a background check on
- Ellipsis Health is developing cutting-edge AI/ML products to address healthcare staffing issues and administrative burdens.
- The platform employs conversational AI and patented vocal biomarker technology to deliver improved healthcare experiences for clients and patients.
This listing is sourced directly from Ellipsis Health's careers page and normalized into a canonical job model.