AI Engineer

Role Description AI Engineer Lead I - ML Engineering Who We Are 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. UST is a mission-driven group of 29,000+ practical problem solvers and creative thinkers in more than 30 countries. Our entrepreneurial teams are empowered to innovate, act nimbly, and create a lasting and sustainable impact for our clients, their customers, and the communities in which we live. With us, you'll create a boundless impact that transforms your career—and the lives of people across the world. Visit us at UST.com. You Are UST is searching for an AI Engineer to build and deliver production-grade agentic AI systems for enterprise use. The engineer will develop multi-agent workflows, integrate large language models into existing enterprise systems, and support the deployment and automation needed to run them reliably and securely in production. The Opportunity • Build AI agents and multi-agent systems using frameworks with LangGraph and LangChain tools. • Develop and tune prompt engineering workflows across multiple LLMs (GPT, Claude, LLaMA), balancing reliability, cost, and latency. • Develop REST APIs, WebSocket services, and event-driven pipelines for real-time AI services that remain stable under load. • Automate testing and releases through Jenkins CI/CD, and maintain code and documentation standards using Git, Jira, and Confluence. • Deployment of AI Application in enterprise adhering to best practices • Use AI-augmented development tools such as Claude Code and Codex to accelerate delivery. • Coordinate with platform, security, and product teams to deliver scalable, secure deployments. This position description identifies the responsibilities and tasks typically associated with the performance of the position. Other relevant essential functions may be required. What You Need • 3-5 years in Machine Learning, AI, or a related field, with production systems delivered. • At least 1 year building custom Agentic AI applications • Strong Python skills and sound modern development practices. • Hands-on experience with LLMs and prompt engineering across the full application lifecycle. • Demonstrated experience building AI agents with LangGraph. • Familiarity with at least one enterprise cloud AI platform for building and deploying agentic applications, such as Azure AI Foundry, AWS Bedrock, or Google Gemini Enterprise, including cloud-native deployment practices. • Working knowledge of REST APIs, WebSockets, and event-driven systems. • Proficiency with CI/CD tooling (Jenkins) and version control (Git). • Fluency with AI-augmented development tools for rapid prototyping. • Strong written and verbal communication, an analytical approach to problem-solving, and the ability to work independently within a cross-functional team. • Data layer curations and integration with source system for agentic application • Good-to-Have Skills: • Familiarity with Databricks. • Exposure to MLOps/LLMOps workflows and application monitoring. • Knowledge of enterprise security, compliance, and governance for AI systems. • Familiarity with code and model lifecycle management practices. Compensation can differ depending on factors including but not limited to the specific office location, role, skill set, education, and level of experience. UST provides a reasonable range of compensation for roles that may be hired in various U.S. markets as set forth below. Role Location: California Compensation Range: $94,000-$141,000 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 throughout the year), 10 paid holidays, and are eligible for paid bereavement leave and jury duty. They are eligible to participate in the Company's 401(k) Retirement Plan with employer matching. They and their dependents residing in the US are eligible for medical, dental, and vision insurance, as well as the following Company-paid Employee Only benefits: basic life insurance, accidental death and disability insurance, and short- and long-term disability benefits. Regular employees may purchase additional voluntary short-term disability benefits, and 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 throughout the year) 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 through