Engineer III - AI

Frost Bank • San Antonio, TX

5d

About The Position

Excited to grow your career? We value our talented employees and whenever possible strive to help them grow professionally. If you believe this position is right for you, we encourage you to apply! Our people make all the difference in our success. It's about innovation and creation. Are you described as someone with an inquisitive mind and an innovative personality? Are you fascinated by the power of AI and how it can help make lives better? Does solving problems and ensuring top-quality systems excite you? If so, being an Engineer III - AI with Frost could be for you. At Frost, it's about more than a job. It's about having a flourishing career where you can thrive, both in and out of work. At Frost, we're committed to fostering an environment that reflects our values and encourages team members to be the best they can be. In joining our adaptable, integrity-driven team, you'll become part of Frost's over 150-year legacy of providing unparalleled banking services. Who you are: As an Engineer III - AI , you believe in using technology to do the right thing. You thrive on designing thoughtful, intelligent workflows and are excited by the future of AI. In this role, you will lead technical efforts on AI reliability, bias mitigation, and adrift detection. You believe in effective communication and will have the opportunity to address potential problems with solutions to complex issues. More than that, this role is about constant improvement and doing so with our signature all-win approach in mind.

Requirements

• Bachelor's in Computer Science, Data Science, or related field
• 4+ years of experience with enterprise-grade AI/ML systems
• Deep understanding of event-driven design, API orchestration, prompt engineering, tool orchestration, planner/verifier roles, and system modularity
• Strong skills in prompt engineering, memory and context handling, and agent loop optimization
• Experience leading teams in applying LLMs and autonomous agents to real-world problems
• Strong experience with Python, FastAPI, LangChain, vector databases, and agent loop architectures
• Excellent written and verbal communication skills
• Proficient in Microsoft computer applications

Nice To Haves

• Experience creating reusable agent libraries or co-pilots
• Open-source contributions to AI frameworks or tooling
• Experience with tools like LangGraph, CrewAI, or Autogen

Responsibilities

• Design and architect intelligent systems and workflows that leverage agentic behavior and LLM decision-making capabilities
• Drive design sessions for agent loop architectures, tool orchestration, and task planning
• Lead technical efforts on AI reliability, bias mitigation, and drift detection
• Collaborate with product and design leaders to define outcomes and performance metrics
• Act as a system designer and workflow architect, not just a code implementer
• Evaluate agent behavior using AI principles (fairness, reliability, explainability, safety)
• Optimize performance of agentic systems with caching, throttling, and fallback strategies
• Mentor engineers in best practices for LLM prompting, agent decomposition, and tool design
• Always take action using Integrity, Caring, and Excellence to achieve all-win outcomes

Benefits

• Medical, dental, vision, long-term disability, and life insurance
• 401(k) matching
• Generous holiday and paid time off schedule
• Tuition reimbursement
• Extensive health and wellness programs, including our Employee Assistance Program
• Referral bonus program + more!

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Number of Employees: 5,001-10,000 employees