AI/ML Engineer

Born digital, UST transforms lives through the power of technology. We walk alongside our clients and partners, embedding innovation and agility into everything they do. We help them create transformative experiences and human-centered solutions for a better world.

About the role

UST is searching for an AI/ML Engineer to design and develop an intelligent chatbot AI Agent that empowers merchants to analyze sales performance and make data-driven decisions.

• Architect, develop, and deploy a chatbot AI Agent to support merchants in analyzing sales performance and decision-making.
• Apply prompt engineering techniques to improve query handling, ensure accurate responses, and optimize LLM interactions.
• Build AI agent workflows leveraging LangChain, LangGraph, and FastMCP for tool integration and orchestration.
• Integrate MCP tools for dynamic data access, retrieval, and analysis.
• Fine-tune and optimize LLMs to handle merchant-specific queries with precision and efficiency.
• Design and implement testing strategies for AI Agents and LLM-based workflows, including evaluation of accuracy, reliability, and bias.
• Build APIs and microservices (using FastAPI) to support chatbot functionality and data pipelines.
• Deploy scalable solutions with Docker and Kubernetes, ensuring reliability and performance.
• Collaborate with product managers, data scientists, and business stakeholders to align AI solutions with merchant needs.

Requirements

• 8-10 years of hands-on experience.
• Hands-on experience with LLMs, AI Agents, Chatbots, and prompt engineering.
• Strong understanding of testing and evaluation methods for LLM-powered agents, including prompt validation, output reliability, and user feedback loops.
• Proficiency in LangChain and LangGraph for agentic workflows and orchestration.
• Familiarity with FastMCP and MCP (Model Context Protocol) for tool integration.
• Proficiency in Python for AI/ML development.
• Experience building services with FastAPI.
• Proficiency with Docker and Kubernetes for scalable deployments.
• Strong problem-solving and communication skills to bridge technical solutions with merchant use cases.
• Ability to adapt quickly, learn complex systems, and contribute effectively in a fast-paced environment.

Qualifications

• Bachelor's Degree in computer science or equivalent experience.

Skills

• FastAPI
• LangGraph
• LangChain
• Python

Pay

Compensation range for this role in Arkansas: $72,000–$108,000.

Benefits

• Full-time, regular employees accrue a minimum of 10 days of paid vacation per year, receive 6 days of paid sick leave each year (pro-rated for new hires), 10 paid holidays, and are eligible for paid bereavement leave and jury duty.
• Eligibility to participate in the Company’s 401(k) Retirement Plan with employer matching.
• Medical, dental, and vision insurance for employees and dependents residing in the US, plus Company-paid Employee Only benefits: basic life insurance, accidental death and disability insurance, and short- and long-term disability benefits.
• Option to purchase additional voluntary short-term disability benefits.
• Eligibility to participate in a Health Savings Account (HSA) as well as a Flexible Spending Account (FSA) for healthcare, dependent child care, and/or commuting expenses as allowable under IRS guidelines.
• Benefits offerings vary in Puerto Rico.
• Part-time employees receive 6 days of paid sick leave each year (pro-rated for new hires) and are eligible to participate in the Company’s 401(k) Retirement Plan with employer matching.
• Full-time temporary employees receive 6 days of paid sick leave each year (pro-rated for new hires) and are eligible to participate in the Company’s 401(k) program with employer matching, plus medical, dental, and vision insurance for themselves and dependents residing in the US.
• Part-time temporary employees receive 6 days of paid sick leave each year (pro-rated for new hires).
• All US employees who work in a state or locality with more generous paid sick leave benefits will receive the benefit of those sick leave laws.