Demo

Senior AI Engineer

NxT Level
York, NY Full Time
POSTED ON 6/24/2026
AVAILABLE BEFORE 7/24/2026
Senior / Principal AI Engineer (Generative AI, Multi-Agent Systems)

Location: New York City (Hybrid - 3 days onsite)
Compensation: $200,000 - $300,000 equity
Contact / Apply:

About Our Client

Our client is building AI systems that support real clinical workflows at scale-delivering high-quality medical reasoning, documentation, and triage while meeting the reliability bar required in regulated healthcare environments. This is a high-impact role for engineers who want to ship production AI that directly affects patient care.

The Role

We're hiring a Senior / Principal AI Engineer to build core AI systems, clinical data infrastructure, and safety layers that enable reliable, real-time medical AI. You'll work on multi-agent reasoning, RAG pipelines over large clinical knowledge bases, model optimization, and high-throughput inference-alongside infrastructure for EHR integrations and human-in-the-loop escalation.

This is a high-ownership role suited for engineers who can move from research production and design systems that are measurable, debuggable, and safe.

What You'll Build

Core AI Systems
  • Multi-agent consensus architectures where specialized models debate cases before conclusions
  • RAG pipelines processing thousands of clinical guidelines structured for LLM consumption
  • Fine-tuning and model distillation to improve performance and efficiency
  • Real-time inference systems supporting millions of medical consultations monthly
  • Custom workflows for domain-specific medical reasoning

Clinical Data Infrastructure
  • HIPAA-compliant NLP pipelines extracting structured data from patient conversations
  • QHIN integrations for automated EHR data retrieval and reconciliation
  • Intelligent triage systems routing between AI and human providers
  • Documentation generation aligned to provider-specific protocols

Safety & Scale
  • Emergency detection with sub-second escalation to human oversight
  • Validation layers targeting 99% treatment plan accuracy
  • Distributed systems handling rapid growth and peak loads
  • Fail-safe mechanisms for critical path decisions in regulated environments

You may also work on voice/video AI interfaces, multilingual medical NLP, predictive health modeling, and infrastructure designed for the next billion patient interactions.

Responsibilities
  • Design and ship production-grade LLM systems with strong evaluation, observability, and reliability guarantees
  • Build multi-agent orchestration patterns (routing, tool-use, consensus, and failure handling)
  • Develop retrieval grounding layers (knowledge ingestion, indexing, ranking, citation/traceability)
  • Improve model performance through fine-tuning, distillation, optimization, and latency/cost tradeoffs
  • Implement safety systems: escalation paths, validation layers, monitoring, and guardrails
  • Collaborate cross-functionally with product, clinical, and engineering partners to translate requirements into measurable systems

Required Qualifications

Education & Background
  • CS degree or equivalent demonstrated expertise
  • Hard science degrees (Physics/Math/Engineering) welcome with strong technical foundation
  • Preference for graduates from top programs (where demonstrated rigor is clear)
  • Preference for founders / founding engineers / substantial startup experience
  • Independent problem solver who collaborates well cross-functionally

Technical Expertise
  • 7 years engineering experience with deep LLM / generative AI expertise
  • Strong knowledge of foundation models (OpenAI, Anthropic, LLaMA-class models)
  • Experience shipping production AI systems with real-time inference constraints
  • Strong Python; experience with PyTorch and/or TensorFlow and modern AI frameworks
  • Experience with prompt engineering, fine-tuning, and model optimization for specialized domains

Preferred Qualifications
  • AI systems for healthcare, medical, or life sciences applications
  • Familiarity with medical terminology, clinical workflows, and standards (HL7, FHIR)
  • Experience with medical AI safety, bias detection, and fairness in healthcare
  • Domain-specific NLP experience (classification, extraction, summarization)
  • Worked directly with medical professionals or in regulated healthcare environments
  • Published AI/ML research (especially healthcare or safety-critical)
  • Seed/Series A experience in AI or healthcare

Why This Role
  • Build systems that operate at the intersection of AI safety real clinical scale
  • High ownership over architecture and reliability-shipping production AI, not demos
  • Work on multi-agent reasoning, RAG, real-time inference, and healthcare integrations in one role
  • Mission-driven impact: improving workflows and outcomes for patients and clinicians

Salary : $200,000 - $300,000

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