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Blue Yonder

Provides AI-driven end-to-end supply chain platform

Director – Model Behavior & Evaluation Systems

Natural Language Processing & LLMsConfirmed live in the last 24 hours
Full-timeParis, FranceNo salary listedIn-person

About the Job

Requirements

  • Have led technical work on LLM products, AI agents, model behavior, model evaluation, post-training, AI alignment, or AI product quality.
  • Have built or led evaluation systems for open-ended LLM behavior, including evaluation datasets, graders, rubrics, scorecards, subject-matter-expert review loops, regression tests, or launch gates.
  • Have hands-on depth with LLM tool calling, function calling, API agents, workflow agents, software-operating agents, or enterprise automation.
  • Be technically fluent in the modern LLM stack, including Python, PyTorch, Hugging Face Transformers, Hugging Face Datasets, OpenAI Agents SDK, Langfuse, model checkpoints, tokenization, inference behavior, and experiment analysis.
  • Understand post-training workflows well enough to partner deeply with machine-learning teams, including supervised fine-tuning, preference data, reinforcement learning from human feedback/reinforcement learning from AI feedback, reward modeling, NeMo RL, system prompting, synthetic data, and model launch evaluation.
  • Be able to reason about practical LLM behavior failures, including hallucination, sycophancy, overconfidence, verbosity, refusal behavior, instruction hierarchy, prompt injection, tool-use failures, evaluation drift, and behavioral regressions.
  • Have enough technical fluency to inspect model traces, tool-call transcripts, evaluation failures, telemetry, datasets, experiment configurations, and model-quality reports, then guide teams toward concrete fixes.
  • Have strong product judgment and experience translating user or customer needs into shipped product behavior.
  • Be able to lead cross-functional work across product, research, engineering, design, security, legal, customer success, domain experts, and executives.
  • Be comfortable making launch-readiness decisions under ambiguity, with explicit tradeoffs and evidence.
  • Be able to communicate clearly in writing and turn ambiguous behavioral principles into clear guidelines, examples, rubrics, specifications, and decisions.
  • Have experience defining model specifications, behavior guidelines, system-instruction hierarchies, annotation rubrics, policy taxonomies, or model behavior standards.
  • Have managed, built, or strongly influenced senior technical teams.

Responsibilities

  • Own the behavioral quality bar for Blue Yonder's LLM agents across customer-facing supply chain workflows.
  • Build and lead the model behavior and evaluation systems function across behavior specifications, evaluation governance, subject-matter-expert review, release gates, regression coverage, and launch readiness.
  • Define launch criteria across operational correctness, tool-use accuracy, workflow completion, escalation quality, safe fallback behavior, refusal quality, consistency, and customer trust.
  • Establish evaluation authority so evaluations become release-decision infrastructure rather than model-quality reporting alone.
  • Set the technical direction for behavior and evaluation infrastructure across Python evaluation harnesses, OpenAI Agents SDK workflows, Langfuse traces, LLM-as-judge workflows, deterministic checks, trace analysis, reward/report versioning, and model-candidate comparison.
  • Convert model traces, tool-call failures, subject-matter-expert feedback, red-team findings, telemetry, and customer-facing failures into behavior specifications, evaluation requirements, training-data needs, and model-improvement priorities.
  • Partner with the reinforcement-learning and post-training organization to turn behavior gaps into supervised fine-tuning data, preference data, reward criteria, curriculum, NeMo RL experiments, model-candidate decisions, and regression tests.
  • Partner with workflow, data, product, and domain experts to turn supply chain workflow truth into durable scenario coverage, rubrics, synthetic scenarios, evaluation datasets, and training-data requirements.
  • Partner with agent architecture and product engineering teams to ensure prompts, tools, APIs, skills, system instructions, and product workflows express intended model behavior consistently.
  • Review model traces, evaluation outputs, experiment summaries, dataset slices, reward reports, and post-training results closely enough to make informed launch and roadmap decisions.
  • Own customer and user behavior discovery for agent workflows, including what users expect agents to do, explain, ask, verify, escalate, refuse, and act on.
  • Lead red-teaming and behavioral-risk programs for hallucinated operational claims, incorrect tool use, overconfidence, poor escalation, prompt injection, unsafe recommendations, sycophancy, and unhelpful refusals.
  • Define the operating cadence for behavioral-quality reviews, model-release readiness, model cards, issue triage, regression management, and post-launch behavior monitoring.
  • Build a high-performing team or function around model behavior, evaluation governance, subject-matter-expert review systems, and behavioral launch quality.
  • Communicate model-behavior strategy, quality tradeoffs, launch readiness, and residual risks to executives, customers, product teams, engineering teams, and domain experts.

Desired Qualifications

  • Experience owning model behavior, assistant quality, agent behavior, LLM product quality, or AI alignment work at a frontier lab, AI product company, or enterprise AI platform.
  • Experience scaling an evaluation, model-quality, or launch-readiness function from early experimentation into repeatable operating practice.
  • Experience working with NVIDIA Nemotron, vLLM, Ray, distributed evaluation, large-scale inference, or model-serving observability.
  • Experience applying AI agents to supply chain planning, warehouse management, transportation, logistics, operations research, retail, manufacturing, or enterprise workflow software.
  • Experience working with strategic enterprise customers on ambiguous, high-impact AI product behavior, safety, or launch-readiness decisions.
  • Experience publishing, open-sourcing, or internally leading notable work around model behavior, evaluations, agents, post-training, or AI product quality.

About the Company

Blue Yonder

Provides AI-driven end-to-end supply chain platform

Blue Yonder provides an end-to-end digital fulfillment platform for supply chains, helping retailers, manufacturers, and logistics providers plan, execute, and deliver more efficiently. Its Luminate Platform uses AI and machine learning to predict disruptions and optimize decisions across forecasting, inventory, workforce scheduling, and logistics, all within a single integrated system. Unlike many competitors that offer separate solutions, Blue Yonder combines planning and execution in one unified platform, rooted in data-driven forecasting methods with a science-based origin. The goal is to help customers run more efficient, resilient supply chains that can quickly adapt to changing demand and supply conditions.

Company size
5,001-10,000
Company stage
Late Stage VC
Total funding
$75M
Headquarters
Scottsdale, AZ
Founded
2008

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