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Principal AI Engineer

Job in St Louis, Saint Louis, St. Louis city, Missouri, 63105, USA
Listing for: Brooksource
Full Time position
Listed on 2026-02-14
Job specializations:
  • IT/Tech
    AI Engineer, Systems Engineer, Cloud Computing
Salary/Wage Range or Industry Benchmark: 100000 - 125000 USD Yearly USD 100000.00 125000.00 YEAR
Job Description & How to Apply Below
Location: St Louis

Our Fortune 1000 Credit Services clients is looking for a Principal AI Engineer to join their team.

Title:

Principal AI Engineer, Agentic Engineering

Location:

Hybrid (in-office Tues–Thurs) Sponsorship:
This position does not offer immigration sponsorship (current or future), including F-1 STEM OPT extension support. What You’ll Do
  • Define the strategic roadmap for Git Hub Copilot as a first-class internal product.
  • Architect systems for Copilot’s invocation, context retrieval, and action execution using custom tools.
  • Design and manage the Model Context Protocol (MCP) toolset to integrate Copilot with platforms like Service Now, Atlassian, Data Dog, and GCP.
  • Engineer scalable context strategies, shaping Copilot’s persona and behavior through centralized, version-controlled instructions.
  • Design, test, and refine prompts and contextual frameworks to maximize agent accuracy and reliability.
  • Establish KPIs, observability stacks, and security safeguards, including human-in-the-loop frameworks and RBAC permissions.
  • Deliver cloud-native, microservice-based solutions aligned with secure SDLC practices.
  • Mentor engineers, build strong technical teams, and foster collaboration across product, business, and sales partners.
  • Troubleshoot production issues under pressure, ensuring compliance with QE, Dev Sec, and Fin Ops KPIs.
  • Partner with architects and SRE leads on technical direction, documentation, and architecture decisions.
  • Present complex technical concepts clearly to diverse stakeholders.
What You’ll Need
  • Bachelor’s degree in Computer Science or equivalent experience.
  • 7+ years designing cloud-native solutions and microservices (Java, Spring Boot, GCP SDKs, Kubernetes).
  • 3+ years of Git Hub Copilot expertise.
  • 3–5+ years architecting intelligent agent systems integrated with LLMs.
  • Hands‑on experience with Git Hub Actions, Jenkins CI/CD, Helm Charts, Terraform, and infrastructure-as-code.
  • Strong troubleshooting, communication, and leadership skills.
What Could Set You Apart
  • Mastery of the Git Hub ecosystem (Actions, Apps, APIs, webhooks).
  • Senior‑level proficiency in Python, Go, or Node.js.
  • Deep expertise in RESTful API design, MCP specification, and SaaS integrations.
  • Advanced cloud‑native knowledge (GCP, Kubernetes, IAM).
  • Experience with event‑driven architectures, RAG systems, and pragmatic agent orchestration.
  • Applied LLM expertise with tool‑use and function‑calling paradigms.

This role is ideal for a visionary engineer who thrives at the intersection of AI, cloud‑native systems, and agentic orchestration.

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