Senior ML / AI Engineer

5+ years building and shipping ML/AI systems in production (not just notebooks or POCs), including hands-on LLM application work in the last 1–2 years.

Strong Python (typed, tested, production-grade) and solid software-engineering fundamentals; comfortable across an async web service, a data layer, and infra.

Practical depth in LLM application patterns : prompting, structured/ function-calling outputs, RAG (embeddings, vector search, retrieval quality), agent/tool-use loops, and - critically - how to evaluate and de-risk them (grounding, hallucination control, eval sets, guardrails).

Cloud + MLOps experience on AWS (or equivalent): containers + Kubernetes, IaC (Terraform), CI/CD, observability, and cost/perf tuning of model-serving.

Track record of owning reliability : state durability, failure handling, scaling, and debugging production incidents.

Clear written communication and the judgment to make sensible calls under ambiguity.

Self-hosting/optimizing open-weight models (vLLM, TGI, or similar) on GPUs ; embeddings/rerank serving (e.g., bge / Infinity).

LangGraph / LangChain or comparable agent frameworks; multi-agent orchestration.

Regulated-data experience - HIPAA / SOC 2 / ISO 27001 , PHI/PII handling, RBAC, audit trails; healthcare/insurance/claims domain (X12 835, EOB, benefits) a strong plus.

pgvector / Postgres , MongoDB/DocumentDB, SQS, Cognito/OIDC.

OpenTelemetry, Prometheus/Grafana; frontend comfort (React/TypeScript) to extend an internal builder/console.

Amazon Bedrock or a multi-provider abstraction; on-prem/air-gapped deployment.

Python · FastAPI · LangGraph · Pydantic · vLLM · pgvector · MongoDB · Postgres · Redis · SQS · React/TypeScript · AWS (EKS + GPU, Cognito, RDS, S3/KMS, SQS) · Terraform · OpenTelemetry · Docker/Kubernetes

You'll work on genuinely hard, high-impact AI - systems that make sensitive decisions and therefore have to be right - with the mandate and the platform to do it well: real governance, real evals, real observability, and a team that treats "governed autonomy" as the goal, not an afterthought.

Our main offering is a MERP that, when paired with a HDHP, offers first dollar coverage to employees at a lower premium cost. This means people have access to early care without the worry of a copay, coinsurance, or deductible. Ultimately, early care drives down overall cost and improves health and happiness. We think this is the way healthcare should work! Our primary sales channel is selling into brokers. We have a national presence with a growing book of business and expanded product offerings.

Our team at Nonstop is where our magic really comes to life. We are driven, curious, collaborative, passionate, mission oriented, and most of all - we are real people who love what we do and believe in the real impact we are driving for people all over the US.