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Sr. Software Engineer II – AI

SECRET NEW COMPANY · Time, IL · Yesterday
Engineering$187k–$235k/yrFull-time

About the role

The Sr. Software Engineer II – AI will lead the build of GenAI-powered product experiences and the shared AI platform infrastructure that powers them. This includes RAG pipelines over the iHerb catalog and customer reviews, LLM-driven personalization, a conversational Wellness Agent, agentic workflow systems, and the evals and MLOps layer that makes AI features production-grade and repeatable. Specializations within this track include: RAG and personalization, agent framework and tool use, evals and guardrails, and LLM application development for internal business functions such as marketing automation and BI agents.

Responsibilities

  • Design, build, and operate production AI features: RAG pipelines, LLM-driven recommendations, conversational agents, or agentic workflow automation.
  • Build the shared AI platform layer: retrieval infrastructure, eval frameworks, model monitoring, guardrails, and observability.
  • Write LLM applications and integrations with marketing platforms, BI tools, or customer-facing product surfaces.
  • Evaluate model and feature quality using structured eval frameworks; iterate on prompts, retrieval strategies, and model selection using data.
  • Use AI-driven SDLC tooling such as Claude Code as a daily practice for both AI and non-AI code.
  • Coincide with the Personalization team to align GenAI product features with existing ML personalization signals.
  • Document AI system design decisions, evaluation results, and operational lessons in the shared knowledge base.
  • Own the observability of AI systems you build: latency, cost, quality drift, and error rates; participate in on-call rotation and respond to production incidents.

Required Knowledge, Skills and Abilities

  • AI-driven SDLC : hands-on experience shipping production code with AI-assisted development tools such as Claude Code, GitHub Copilot, or Cursor.
  • Full-stack awareness: comfortable contributing across layers of the stack when needed; purely single-layer specialists are not the target profile.
  • Production ownership: experience owning features end-to-end from spec through deployment, observability, and on-call.
  • Code quality fundamentals: strong grasp of software design principles, automated testing, code review, and CI/CD.
  • Fully autonomous; drives technical decisions within the team; mentors junior engineers.
  • Python proficiency; comfortable building and operating production LLM applications.
  • Hands-on experience with at least one specialization: RAG and retrieval systems, LLM evaluation, agentic frameworks (LangChain, LlamaIndex, or similar), or LLM-based workflow automation.
  • Understanding of prompt engineering, context window management, and LLM output quality tradeoffs.
  • Familiarity with vector databases, embedding models, or semantic search.
  • High degree of accuracy and attention to detail.
  • Excellent organization skills and ability to multi-task.

Preferred

  • Exposure to MLOps tooling or model deployment pipelines.
  • Contributions to internal developer tooling, golden path standards, or SDLC process improvements.
  • Experience with e-commerce platforms, product catalogs, or high-traffic consumer applications.
  • Experience working in globally distributed teams.
  • Track record of documenting architectural decisions, writing RFCs, or contributing to engineering wikis.

Equipment Knowledge

  • Experience with Microsoft Office Suite (Word, Excel, PowerPoint).
  • Experience with Google Business Suite (Gmail, Drive, Docs, Sheets, Forms) preferred.

Experience Requirements

  • Generally requires a minimum of 10+ years of software engineering experience.

Education Requirements

  • Bachelor’s Degree in Computer Science or related field preferred, or a combination of education and equivalent work experience.

Pay

$187,000—$235,000 USD

Benefits

  • Medical, dental, vision, and basic life insurance programs.
  • 401(k) plan.
  • Time Off and Paid Sick Leave.
  • Paid holidays throughout the calendar year.
  • Restrict Stock Units.
  • Awarded annual bonuses.

About IHerb

iHerb is on a mission to make health and wellness accessible to all. We offer Earth’s best-curated selection of health and wellness products, at the best possible value, delivered with the most convenient experience. We’re the world’s largest eCommerce platform dedicated to vitamins, minerals, and supplements, and other health and wellness products. For more than 25 years, we’ve been making it simple for people all over the world to purchase the highest quality products. From supplements to skincare to grocery items, we ship over 50,000 products, from over 1,800 brands direct to our customers in 180+ countries. Our vision is to become the #1 destination for health and wellness across the world. With a Passion For Wellness And a Mind For Innovative Solutions, IHerb Team Members Share a Vision For a Healthier World That Drives Them Each Day. Our 5 Shared Values Unite Our Global Team Focus on the Customer Empower Our People Be Entrepreneurial & Pivot Quickly Embrace Diversity & Inclusion Strive for Simplicity

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