River AI jobs, careers, and hiring context

Explore River AI careers: 12 open roles hiring now. Find jobs at River AI with direct links to apply. Funding stage: Seed. Headcount: 1-10. River AI is a Palo Alto–based AI startup founded by former xAI co-founder Igor Babuschkin, building a full-stack platform for custom, open-weight model development. Its API lets developers fine-tune open models with reinforcement learning and LoRA, completing complex RL training runs in 15–20 minutes without dedicated infrastructure. The company positions itself as an alternative to prompt engineering against closed-source incumbents.

This page summarizes open roles, company profile signals, and official application paths so candidates can quickly evaluate fit before applying. Use the role list below to identify team focus, review location patterns, and jump to source listings. For broader comparison across the market, continue to the full company directory and jobs explorer.

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Open roles
12
Funding stage
Seed
Total funding
$1.1B

Key facts

River AI is a Seed stage AI startup, founded in 2026, with $1.1B in total disclosed funding. Its most recent round was a $1.1B Seed in Aug 2026. It currently lists 12 open roles across San Francisco Bay Area, HQ, Palo Alto, CA, +3 more. Source: Fast AI Jobs company dataset, updated Aug 2026.

Related topic tags

Machine LearningGenerative AIAPIDeveloper Tools

Sample open roles from this company

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Company profile last updated on Aug 13, 2026.