Engineer III - AI

Job Description

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.

About the Role

The candidate for this exciting opportunity will need to be living in the San Antonio, Texas area. This role will require 3 to 4 days per week at the One Frost Corporate Campus office. Frost will help with relocation costs to move to San Antonio, Texas if one is not currently living in San Antonio, Texas.

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

Qualifications

• 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

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!