Lead Software Engineer, Agentic AI Systems
Collective HealthBase Salary
$138k - $190k/yr
Responsibilities
- Build and deploy AI agents using Google Vertex AI and Google ADK from architectural specifications.
- Develop Gemini-based agent behaviors with reliable tool calling, multi-step reasoning, RAG, and grounding against claims databases and policy documents.
- Implement system instructions, few-shot prompts, Chain-of-Thought reasoning, and supervised fine-tuning for claims adjudication and medical coding.
- Design reusable cloud-native, AI-enabled backend patterns using SQL, PostgreSQL, AlloyDB, and BigQuery.
- Implement stateful orchestration with human review breakpoints so agents can pause, persist state, and resume after auditor approval.
- Build input/output guardrails and circuit-breaker logic to intercept non-compliant, toxic, or hallucinated outputs.
- Implement Google Cloud DLP or similar protections to prevent PHI exposure in model training or logs.
- Support and extend existing Java and Spring Cloud microservice architectures.
Requirements
- 8+ years of full-stack software engineering experience with a heavy focus on backend systems.
- Exceptional Python development skills for production-grade applications.
- Hands-on experience with Gemini, Vertex AI, and the Google Agent SDK (ADK).
- Deep experience with the Vertex AI Python SDK, including Reasoning Engine Runtime, Extensions, and Function Calling.
- Expertise in LangChain, LangGraph, or PydanticAI.
- Proven prompt-engineering experience focused on hallucination mitigation and deterministic outputs in regulated environments.
- Experience with RAG, grounding, tool calling, multi-step reasoning, guardrails, stateful orchestration, and LLM fine-tuning.
- Experience using AI-enhanced development tools such as Cursor, WindSurf, or GitHub Copilot.
- Familiarity with healthcare interoperability standards and claims-related data structures is preferred.
- Practical experience fine-tuning LLMs for industry nomenclature or structured output formats is preferred.
- Working knowledge of Java and Spring Cloud for supporting existing microservice architectures is preferred.
Benefits
- Hybrid position based in Lehi, Utah or Plano, Texas, with at least two weekdays per week in the office.
- Health insurance, 401(k), paid time off, and stock options.
- Professional development through internal mobility, mentorship programs, and tailored courses.
- Flexible work arrangements and work-life balance support.
Tech Stack
Categories
About Collective Health
Collective Health is the leading independent third party administrator (TPA) that brings together plan administration, cost management, and taking great care of your people—all in one place. Conventional wisdom in health benefits says you must choose: better or safe. Collective Health allows you to have both. For self-funded employers, Collective Health provides a unified foundation with Collective TPA™, My Collective®, Care Navigation, Collective Compass®, and Partner Collective®—combining technology, clinical expertise, and a flexible partner ecosystem to simplify administration, improve decision-making, and guide members through their healthcare journeys. Founded in 2013, Collective Health serves more than 800,000 members from organizations including Red Bull, The Wonderful Company, Boot Barn, Live Nation, Driscoll’s, Uber, and Zoom. The company is headquartered in San Francisco, California, with additional locations in Plano, Texas, and Lehi, Utah. *We value respectful and constructive conversation. Comments that are offensive, inappropriate, or unrelated to the discussion may be removed.*