Senior AI Engineer - Remote US
2 days ago
Job description
About Ethos
Ethos is a leading life insurance technology company on a mission to protect families by democratizing access to life insurance and empowering agents at scale. With its robust three-sided technology platform, Ethos is transforming the life insurance experience for consumers, agents, and carriers alike. Ethos offers instant, accessible products and a seamless online process that requires no medical exams and just a few health questions; it eliminates traditional barriers, making it easier than ever for everyone to protect their families. Ethos is redefining how life insurance is bought, sold, and underwritten.
About the Role
We're building several LLM-powered copilots across critical workflows (e.g., underwriting productivity, agent enablement, customer support, operations/compliance, fraud). We need an AI engineer to own the LLM + retrieval + context layer that makes these copilots accurate, auditable, fast, and cost-efficient.
Typical stack: Python/FastAPI, Postgres + vector (pgvector/Pinecone/Weaviate), OpenSearch, optional graph DB, Kubernetes + GPUs, OTEL/Datadog
Duties and Responsibilities:
- Production RAG: indexing, retrieval, hybrid search, reranking, query rewriting, grounding, citations
- Context Graph: entity resolution + linking + provenance; graph + vector retrieval; supports multi-hop context
- LLM orchestration: tool/function calling, structured outputs, routing across model tiers, failure modes
- GPU/inference cost optimization: batching, caching/KV reuse, quantization, autoscaling; optimize $/session + latency
- Safety + compliance: PII/PHI handling, redaction, audit logs, deterministic replay, hallucination mitigation
- LLMOps: eval harness (golden sets, regression, adversarial), monitoring for quality/cost/drift
- Design/ship the end-to-end pipeline: retrieve → assemble context → generate → cite → log/monitor
- Improve quality and trust via evaluation, feedback loops, and clear evidence-backed outputs
- Partner with product, security, and domain teams; write crisp design docs; raise engineering bar
- Ship RAG v1 with citations + measurable quality metrics
- Deliver Context Graph v1 that improves retrieval on real copilot tasks
- Reduce cost/latency with a concrete inference optimization plan shipped to prod
Qualifications and Skills:
- 7+ years building production systems; 2+ years hands-on LLMs/RAG
- Proven RAG experience (embeddings, vector DBs, hybrid search, reranking, eval)
- Strong backend/distributed systems + observability
- Track record shipping in high-stakes environments with auditability/correctness
- Knowledge graph / entity resolution / provenance systems
- GPU inference optimization (vLLM/TGI/TensorRT-LLM, quantization AWQ/GPTQ, batching)
- Regulated domain experience (insurance/fintech/healthcare)
#LI-Remote #LI-MK1
The US national base salary range for this full-time position is $146,000 - $236,000. Our salary ranges are determined by role, level, and location. The range displayed on each job posting reflects the minimum and maximum target for new hire salaries for the position across all US locations. Within the range, individual pay is determined by work location and additional factors, including job-related skills, experience, and relevant education or training.
Please note that the compensation details listed in US role postings reflect the base salary only and do not include applicable bonus, equity, or benefits.
You can find further details of our US benefits at
Don't meet every single requirement? If you're excited about this role but your past experience doesn't align perfectly with every qualification in the job description, we encourage you to apply anyway. At Ethos we are dedicated to building a diverse, inclusive and authentic workplace.
We are an equal opportunity employer.. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. Pursuant to the SF Fair Chance Ordinance, we will consider employment for qualified applicants with arrests and conviction records.
To learn more about what information we collect and how it may be used, please refer to our California Candidate Privacy Notice.
Recruitment Notice: Please be aware of recruitment scams. All legitimate communication from our team will only come from email addresses ending in or
We will never ask for payment, banking details, or sensitive personal information during the hiring process. If you are contacted by someone claiming to represent us from a different email address, please treat it as fraudulent.
Similar jobs
We are hiring Senior Engineers to work on Code Builder one of WISEcode's most strategic technically interesting products. · ...
1 month ago
Datum's mission is to help 1k clouds thrive in the AI era by unlocking internet superpowers for every builder. We're working in the open to bring the foundational capabilities that all the big guys use (private networking, peering, direct interconnection, etc) into the hands of b ...
2 days ago
Polygon Labs is a global blockchain payments company building and operating infrastructure to move money instantly reliably and at internet scale. As a Senior Engineer on the PoS Engineering team you'll focus on strengthening the peer-to-peer networking capabilities across all th ...
2 weeks ago
About Polygon Labs · Polygon Labs is a global blockchain payments company building and operating infrastructure to move money instantly, reliably, and at internet scale, with the mission to move all money onchain. It is building the Polygon Open Money Stack, an open and integrate ...
12 minutes ago
Datum's mission is to help 1k clouds thrive in the AI era by unlocking internet superpowers for every builder. We're working in the open to bring the foundational capabilities that all the big guys use (private networking, peering, direct interconnection, etc) into the hands of b ...
2 days ago
Datum's mission is to help 1k clouds thrive in the AI era by unlocking internet superpowers for every builder. We're working in the open to bring the foundational capabilities that all the big guys use (private networking, peering, direct interconnection, etc) into the hands of b ...
2 days ago
As a Sr. Engineer at SEI, you will design develop test and deploy mission critical SaaS applications. · ...
1 week ago
Datum's mission is to help 1k clouds thrive in the AI era by unlocking internet superpowers for every builder. We're working in the open to bring the foundational capabilities that all the big guys use (private networking, peering, direct interconnection, etc) into the hands of b ...
2 days ago
Datum's mission is to help 1k clouds thrive in the AI era by unlocking internet superpowers for every builder. We're working in the open to bring the foundational capabilities that all the big guys use (private networking, peering, direct interconnection, etc) into the hands of b ...
2 weeks ago
Jellyfish's engineering team is solving one of the hardest problems in engineering operations: understanding how teams actually organize themselves and deliver work. · ...
1 month ago
ABOUT THE ENGINEERING TEAM · The Engineering team at GenLogs builds and sustains the end-to-end systems that power the country's most advanced commercial-vehicle sensing and intelligence network. Our engineers develop everything from roadside hardware and embedded software to com ...
2 days ago
Earnest LLC – Oakland, CA · Title: Senior Data Engineer · Duties: · The Senior Data Engineer (Multiple Positions Open) at Earnest LLC in Oakland, CA will design and implement tooling and abstraction patterns for orchestrating transformations in Extract, Load, and Transform (ELT) ...
2 days ago
+Job summary · A Senior Network Engineer position at Dean Dorton. · +ResponsibilitiesDesign, configure, deploy, and troubleshoot enterprise network solutions across campus data center hybrid cloud environments. · Serve as a subject matter expert in advanced routing protocols incl ...
2 weeks ago
DexCare optimizes time in healthcare, streamlining patient access, reducing waits and enhancing overall experiences. · ...
3 weeks ago
This role sits at the intersection of backend engineering, security, and fraud operations. · Lead the implementation and ongoing improvement of abuse detection services and customer account security features · ...
1 week ago
· Founded in 2017, Obsidian Security was created to close a critical gap: securing the SaaS applications where modern business happens—platforms like Microsoft 365, Salesforce, and hundreds more. · Backed by top investors including Greylock, Norwest Venture Partners, and IVP, w ...
2 days ago
Jellyfish enables leaders to effectively build AI-integrated engineering teams, align engineering decisions with business initiatives and deliver the right software efficiently and on time. · We're looking for a senior backend engineer excited to explore this space and define how ...
1 week ago
· Founded in 2018 with co-headquarters in Dublin and Boston, Tines powers some of the world's most important workflows. Our intelligent workflow platform applies AI, automation, and integration with human ingenuity to drive real business results. · Tines serves a diverse range ...
2 days ago
We are seeking an exceptional Senior Systems Engineer to join our core team building critical, next-generation infrastructure for the Solana ecosystem. · ...
1 month ago
We believe scientific expertise should drive innovation, not get lost in spreadsheets. We're building software that enables biotech teams to operate with the speed their work deserves. · ...
1 week ago
We're looking for a Senior Software Engineer to join our Partner Activation Engineering team. · In this role, you'll design, build and operate systems that enable seamless onboarding, integration and activation of strategic partners. You'll work closely with product, partnerships ...
1 week ago