AI Engineer I

At FourKites we have the opportunity to tackle complex challenges with real-world impacts. Whether it’s medical supplies from Cardinal Health or groceries for Walmart, the FourKites platform helps customers operate global supply chains that are efficient, agile and sustainable.

Join a team of curious problem solvers that celebrates differences, leads with empathy and values inclusivity. 

We are seeking an experienced AI Engineer to join our AI team, where you'll play a pivotal role in building and scaling our next-generation AI workforce platform. You'll work on cutting-edge agent-based systems that are transforming supply chain operations for Fortune 500 companies, delivering real business value through intelligent automation.

What you'll be doing?

Technical Leadership

• Implement production-scale AI agent systems and orchestration frameworks (LangGraph, LangChain, similar architectures)
• Optimize deployment strategies using both LLMs and SLMs based on use case requirements
• Build natural language-configurable business process automation frameworks
• Implement multi-modal AI systems for document understanding (tables, charts, layouts)

AI/ML Implementation & Optimization

• Deploy and optimize LLMs/SLMs in production with fine-tuning techniques (LoRA, QLoRA, DPO)
• Implement quantization strategies (INT8, INT4) and model distillation for edge deployment
• Build evaluation frameworks including LLM-as-judge systems and regression testing
• Create semantic caching and embedding-based retrieval systems
• Develop GraphRAG and long-context handling strategies (100k+ tokens)

System Architecture & Engineering

• Develop scalable microservices with comprehensive observability (LangSmith, Arize, custom telemetry)
• Build secure multi-tenant systems with prompt injection prevention and output validation
• Implement cost optimization through intelligent model routing and fallback strategies
• Develop document processing pipelines with OCR and layout understanding
• Create event-driven architectures for real-time shipment tracking and exception handling

About the Team:

Our AI team is a fast-paced, high-impact group focused on building production-grade AI systems that power intelligent automation for global supply chain operations. We work at the intersection of cutting-edge research and real-world deployment, solving complex problems at scale for Fortune 500 customers. The team is highly collaborative, with strong ownership and a bias for execution, where engineers have the opportunity to shape architecture, influence product direction, and drive measurable business impact.

Technical Skills

• 1+ years software engineering, 1+ years in production AI/ML systems
• Expertise in Python, PyTorch/JAX, and AI frameworks (LangChain, Transformers, PEFT)
• Exposure to LLMs (GPT-4, Claude, Gemini) and SLMs (Phi, Llama, Mistral)
• Hands-on experience in any of the below:
• Fine-tuning techniques (LoRA, QLoRA, DPO, RLHF)
• Vector databases and RAG architectures
• Streaming systems and real-time processing
• (Bonus) Security measures (prompt injection prevention, jailbreak detection) 
• (Bonus) Model optimization (quantization, distillation, pruning)
• (optional) Background in distributed systems, Kubernetes, and cloud platforms 

Professional Skills

• Good communication for technical and non-technical audiences
• (Bonus) Data-driven decision making for model selection and cost optimization

Domain Knowledge (nice to have)

• Experience with document intelligence and multi-modal AI systems
• Understanding of supply chain operations, EDI/API integrations
• Knowledge of token economics and consumption-based pricing models
• Familiarity with enterpris