Principal Engineer, Agentic AI Systems at Inflection AI
Palo Alto, CA
$400,000–$550,000from the description
Jun 29, 2026
Palo Alto, CA
Jul 21, 2026
What this job asks for AI summary
A principal-level engineering role focused on designing and building production AI agent systems — covering planning, tool use, memory, state management, and safe execution of complex workflows. The work spans agent architecture, evaluation frameworks, observability, and integration with external APIs and enterprise systems. Suited to a senior engineer with a strong background in LLM-powered products and solid backend fundamentals who can also mentor others and shape technical direction.
Principal level · 10+ years · San Francisco-Oakland-Hayward, CA · Full-time
“or” means any one of them counts — you don't need all of them.
We read this from the posting text with AI. Skim the description below before ruling yourself out.
How this req sits in the market our data
Roughly 40 people in the San Francisco-Oakland-Hayward, CA area plausibly meet what this posting asks for (software developers). range 15–60
Applicant volume Moderate — A normal amount of company. The rare requirements below are what will separate a shortlisted application from the rest.
Rare in this occupation — lead with these, and say what you built with them.
Most people in this occupation already list these. Still required — just not what gets you shortlisted.
What the occupation pays Median $190,744 (middle half $167,095–$224,501). This posting is about at that midpoint.
Estimated from BLS employment for this occupation and area, per-skill prevalence across our listing corpus, and published wage benchmarks — as of Jul 28, 2026. It is a model, not a headcount.
Why we read it this way (7)
The role explicitly requires 3+ years at staff/principal or equivalent scope — this is a genuine Principal-level position, not merely a senior role with an inflated title.
The 2+ years of production-grade agentic or LLM-powered systems requirement is treated as a role-level gate and reflected in the overall years minimum (10+ years overall); the 2-year LLM/agent figure is also captured on those skills.
Python and TypeScript are presented as interchangeable ('Strong Python or TypeScript experience') — Python is listed as primary with TypeScript as an alternative.
The degree requirement states 'bachelor's degree or equivalent in a related field,' which accepts equivalent experience in lieu of a formal degree, so the degree requirement is set to None.
Location is inferred as the San Francisco Bay Area based on the mention of Bay Area visa support and Inflection AI's known headquarters; the posting does not explicitly state remote eligibility.
The alt SOC (15-2051 Data Scientists) is noted because the role has meaningful ML/model evaluation and AI research overlap, though the primary day-to-day work is building production software systems.
Ignored 1 non-technology phrase(s) as skills (responsibilities/concepts, not named tools): browser automation.
Read the full posting
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