Principal AI Engineer -Enfi

Unusual Ventures is an AI-first company building machine-augmented systems for production use in regulated environments and at scale. The Senior Principal AI Engineer will provide hands-on technical leadership by architecting, building, and scaling AI systems, while guiding technical direction and enabling senior engineers to deliver effectively.

Responsibilities:

• Architect and build end-to-end AI systems including LLM orchestration, retrieval layers, agentic workflows, and structured reasoning systems
• Lead the design of multi-agent and tool-calling systems that operate reliably in production
• Establish and evolve architecture patterns for scalable, cost-aware, and observable AI applications
• Drive technical decisions across data modeling, AI pipelines, infrastructure, and APIs
• Define best practices for evaluation, monitoring, and governance of AI systems in production
• Mentor senior engineers through design reviews, code reviews, and system-level debugging
• Translate ambiguous business and domain problems into clear technical strategies
• Stay ahead of emerging AI techniques and integrate what matters—without chasing hype
• Bias toward systems that solve user needs, not perfect abstractions
• Move comfortably from ambiguity → first draft → iteration → production
• Optimize for learning velocity and customer impact, not theoretical completeness
• Are willing to build the entire arc of a system to surface real constraints early
• Treat quality as something you earn through iteration, not something you gate progress with
• Understand that the last 10–20% of a system—integration, edge cases, UX, usability, reliability—is where real work happens
• Helping the organization stay in builder mode as it grows
• Collapsing unnecessary complexity rather than introducing more process
• Knowing when architectural rigor matters, and when it is premature
• Pulling promising work across the finish line instead of waiting for “perfect readiness”
• Modeling speed, ownership, and clarity for other senior engineers